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RabbitCore RCM4400W - Digi International

1. Region Macro Region Number Channel Range Americas _AMERICAS REGION 0 1 11 MEXICO REGION INDOORS 1 1 11 indoors Mexico MEXICO REGION OUTDOORS 2 9 11 outdoors Canada _ CANADA REGION 3 1 11 di Fast Alcs _EMEA REGION 4 1 13 France _ FRANCE REGION 5 10 13 Israel _ISRAEL_ REGION 6 3 11 China _ CHINA REGION 7 1 11 Japan _JAPAN REGION 8 1 13 Australia _AUSTRALIA REGION 9 1 11 The following sample code shows how to set Australia auto int country _AUSTRALIA REGION wifi ioctl IF WIFIO WIFI COUNTRY SET amp country country 0 74 RabbitCore RCM4400W WIFI_COUNTRY_GET This command returns country specific information into the user supplied buffer or data structure area Accordingly you must ensure there is enough space in the buffer for the entire data structure Be sure the data pointer points to a buffer that is large enough to hold sizeof wifi country The wifi status structure has the following definition typedef struct char id Country ID char country 16 Country name int first channel First channel int last channel Last channel unsigned int channel mask Channel mask int max pwr dBm Max power dBm int max pwr index Max Power index _wifi country WIFI_MODE Sets whether the Wi Fi device should attach to an infrastructure network WIFICONF_ INFRASTRUCT which is the most common configuration or an ad hoc network WIFI
2. Pin Pin Name Default Use Alternate Use Notes T O Strobe I6 46 PD6 Input Output Li nput Outpu ROTTE PWM2 TXA TXE IA7 Serial Port E T O Strobe I7 ni 5 D15 47 PD7 Input Output 5 PWM3 T RXA RXE Input Capture 48 Not Connected 49 Not Connected 50 GND 34 RabbitCore RCM4400W 4 1 1 Memory I O Interface The Rabbit 4000 address lines A0 A19 and all the data lines DO D7 are routed inter nally to the onboard flash memory and SRAM chips I O write TOWR and I 0 read IORD are available for interfacing to external devices and are also used by the RCM4400W Parallel Port A can also be used as an external I O data bus to isolate external I O from the main data bus Parallel Port B pins PB2 PB7 can also be used as an auxiliary address bus When using the auxiliary I O bus for any reason you must add the following line at the beginning of your program define PORTA AUX IO required to enable auxiliary I O bus Selected pins on Parallel Ports D and E as specified in Table 2 may be used for input capture quadrature decoder DMA and pulse width modulator purposes 4 1 2 Other Inputs and Outputs The STATUS pin can be brought out to header J1 instead of the PE7 pin as explained in Appendix A 6 RESET_IN is normally associated with the programming port but may be used as an external input to reset the Rabbit 4000 microprocessor and the RCM4400W memory RESET_OUT is an output f
3. Analog Inputs Figure B 4 Prototyping Board Pinout The analog signals are brought out to labeled points at header location J3 on the Prototyping Board Although header J3 is unstuffed a 2 x 7 header can be added Note that analog signals are not available when the RCM4400W included in the Development Kit installed OEM User s Manual 103 All signals from the RCM4400W module are available on header J2 of the Prototyping Board The remaining ports on the Rabbit 4000 microprocessor are used for RS 232 serial communication Table B 2 lists the signals on header J2 as configured by the brdInit function call where applicable and explains how they are used on the Prototyping Board Table B 2 Use of RCM4400W Signals on the Prototyping Board Pin Pin Name Prototyping Board Use 1 3 3 V 3 3 V power supply 2 GND 3 IRST_OUT Reset output from reset generator 4 NORD External read strobe 5 JIOWR _ External write strobe 6 RESET_IN Input to reset generator 8 15 PAO PA7 Output low 16 PBO Serial flash SCLK 17 PBI Output high programming port CLKA 18 PB2 LED DS2 output normally high off 19 PB3 LED DS3 output normally high off 20 PB4 Switch S2 input normally open pulled up 21 PBS Switch S3 input normally open pulled up 22 23 PB6 PB7 Output high 24 25 PCO PC1 Serial Port D RS 232 header J4 high 26 27 PC2 PC3 Serial Port C RS
4. 40 ing limits i 91 auxiliary I O bus 35 memory interface 35 jumper configurations B SMODEO 40 Prototyping Board 108 SMODEL 40 JP1 5 V current measure battery backup dimensions MENt rta 108 battery life 112 Prototyping Board 101 JP11 LNO buffer filter to circuit 112 RCM4400W 84 RCM4400W 109 external battery connec Dynamic Ci 5 9 15 45 JP12 PB2 LED DS2 109 GODS pN 111 add on modules 9 52 JP13 LN1 buffer filter to real time clock 112 installation 9 RCM4400W 109 reset generator 113 battery backed SRAM 48 JP14 PB3 LED DS3 109 use of battery backed SRAM libraries JP15 LN2 buffer filter to pieces eee tees eee 48 RCM44xxW LIB 50 RCM4400W 109 board initialization protected variables 48 JP16 PB4 Switch S2 109 function calls 50 regulatory compliance 5 JP17 LN3 buffer filter to brdInit in 50 sample programs 20 RCM4400W 109 bus loading 91 standard features JP18 PB5 Switch S2 109 debugging 46 JP19 LN4 buffer filter to C telephone based technical RCM4400W 109 certifications
5. RabbitCore RCM4400W C Programmable Wi Fi Core Module OEM User s Manual 019 0160 090515 G RabbitCore RCM4400W OEM User s Manual Part Number 019 0160 090515 G Printed in U S A 2007 2009 Digi International Inc All rights reserved No part of the contents of this manual may be reproduced or transmitted in any form or by any means without the express written permission of Digi International Permission is granted to make one or more copies as long as the copyright page contained therein is included These copies of the manuals may not be let or sold for any reason without the express written permission of Digi International Digi International reserves the right to make changes and improvements to its products without providing notice Trademarks Rabbit RabbitCore and Dynamic C are registered trademarks of Digi International Inc Wi Fi is a registered trademark of the Wi Fi Alliance Rabbit 4000 is a trademark of Digi International Inc The latest revision of this manual is available on the Rabbit Web site www rabbit com for free unregistered download Digi International Inc www rabbit com RabbitCore RCM4400W TABLE OF CONTENTS Chapter 1 Introduction 1 1d RCM4400W Features ie alla leluna la iaia 2 1 2 Advantages of the RCM4400W csc cc siccscecisnnsesesctssasesesseunsesresntoesrancstipecnseteeunessasterseenunssseasdoansessesnenss 3 1 3 Development and Evaluation ToolS 4
6. If a program compiles and loads but then loses target communication before you can begin debugging it is possible that your PC cannot handle the default debugging baud rate Try lowering the debugging baud rate as follows e Locate the Serial Options dialog on the Communications tab in the Dynamic C Options gt Project Options menu Choose a lower debug baud rate Click OK to save Press lt Ctrl Y gt to force Dynamic C to recompile the BIOS You should receive a Bios compiled successfully message once this step is completed successfully 16 RabbitCore RCM4400W 2 4 Where Do I Go From Here If the sample program ran fine you are now ready to go on to the sample programs in Chapter 3 and to develop your own applications The sample programs can be easily mod ified for your own use The user s manual also provides complete hardware reference information and software function calls for the RCM4400W series of modules and the Prototyping Board For advanced development topics refer to the Dynamic C User s Manual also in the online documentation set 2 4 1 Technical Support NOTE If you purchased your RCM4400W through a distributor or through a Rabbit partner contact the distributor or partner first for technical support If there are any problems at this point e Use the Dynamic C Help menu to get further assistance with Dynamic C e Check the Rabbit Technical Bulletin Board and forums at www rabbit com support bb
7. Define cypher suite define WIFI SSID parvati define WIFI PSK PASSPHRASE now is the time User s Manual 65 The next macro specifies a suitable pre shared key The key may be entered either as 64 hexadecimal digits or as an ASCII string of up to 63 characters define WIFI PSK HEX When you assign your own key there is a good chance of typos since the key is long It is advisable to enter the key in this macro first then copy and paste into your access point to ensures that both the RCM4400W and the access point have the same key Initially it may be easier to use the 64 hexadecimal digits form of the key rather than the ASCII passphrase A passphrase requires considerable computation effort which delays the startup of the sample by about 40 seconds If you want to add authentication set the authentication to open system which basi cally means that knowing the key is sufficient to allow access define WIFI AUTH WIFICONF AUTH OPEN SYS Change PING WHO to the host you want to ping You may modify PING_DELAY to change the amount of time in milliseconds between the outgoing pings Uncomment the VERBOSE define to see the incoming ping replies Once you have compiled the sample program and it is running LED DS2 will flash when a ping is sent and LED DS3 will flash when a ping is received POWERDOWN C This program demonstrates how to power down the FPGA chip in the Wi Fi circuit to reduce power consumptio
8. 75 WIFI_WEP_KEY0 3 76 WIFI_WEP_USEKEY WIFI_WPA_PSK_ PASSPHRASE 76 wifi_ioctl 67 71 sample programs 61 software libraries 48 software libraries 46 OEM User s Manual 117 118 RabbitCore RCM4400W SCHEMATICS 090 0239 RCM4400W Schematic www rabbit com documentation schemat 090 0239 pdf 090 0230 Prototyping Board Schematic www rabbit com documentation schemat 090 0230 pdf 090 0128 Programming Cable Schematic www rabbit com documentation schemat 090 0128 pdf 090 0252 USB Programming Cable Schematic www rabbit com documentation schemat 090 0252 pdf You may use the URL information provided above to access the latest schematics directly OEM User s Manual 119
9. CIEL SIVE PRIANO AANAND JP24 He JP23 Figure B 6 Location of Configurable Jumpers on Prototyping Board Table B 4 lists the configuration options using either jumpers or 0 Q surface mount resistors Table B 4 RCM4400W Prototyping Board Jumper Configurations Header Description Pins Connected SOCIO Default JP1 5 V Current Measurement 1 2 Via trace or jumper Connected JP2 3 3 V Current Measurement 1 2 Via trace or jumper Connected Z TxD on header J4 x a PCO TxD LED DS2 JP4 JP4 12 PCO to LED DS2 n c PCO available on header J2 108 RabbitCore RCM4400W Table B 4 RCM4400W Prototyping Board Jumper Configurations continued Header Description Pins Connected Factory Default i RxD on header J4 x 5 PC1 RxD Switch S2 JP6 JP6 12 PCI to Switch S2 n c PC1 available on header J2 es TxC on header J4 x JE PC2 TxC LED DS3 JP6 JP8 12 PC2 to LED DS3 n c PC2 available on header J2 J13 PC3 to Switch S3 1 2 JP3 PC3 RxC Switch S3 JP10 JP10 12 RxC on header J4 x n c PC3 available on header J2 LNO buffer filter to JP11 RCM4400W 1 2 Connected 1 2 Connected PB2 to LED DS2 x JP12 PB2 LED DS2 n c PB2 available on header J2 LN1 buffer filter to JP13 RCM4400W 1 2 Connected 1 2 Connected PB3 to LED DS3 x JP14 PB3 LED DS3 n c PB3 available
10. These function calls can be found in the Dynamic C Rabbit4000 LIB RCM4xxx RCM4xxx LIB library timedAlert void timedAlert unsigned long timeout DESCRIPTION Polls the real time clock until a timeout occurs The RCM4400W will be in a low power mode during this time Once the timeout occurs this function call will enable the normal power source PARAMETER timeout the duration of the timeout in seconds RETURN VALUE None digInAlert void digInAlert int dataport int portbit int value unsigned long timeout DESCRIPTION Polls a digital input for a set value or until a timeout occurs The RCM4400W will be in a low power mode during this time Once a timeout occurs or the correct byte is received this function call will enable the normal power source and exit PARAMETERS dataport the input port data register to poll e g PADR portbit the input port bit 0 7 to poll value the value of 0 or 1 to receive timeout the duration of the timeout in seconds enter 0 for no timeout RETURN VALUE None OEM User s Manual 51 5 3 Upgrading Dynamic C Dynamic C patches that focus on bug fixes are available from time to time Check the Web site www rabbit com support for the latest patches workarounds and bug fixes 5 3 1 Add On Modules Dynamic C installations are designed for use with the board they are included with and are included at no charge as part of our low cost kits Rabbit offers for purchase a
11. ration and radio control functions The data interface between the FPGA and the UBEC UW2453 based 802 11b radio section consists of a D A converter and an A D converter Both devices convert I and Q data samples at a rate of 40 MHz The UBEC UW2453 is a single chip transceiver with integrated power amplifier for the 2 4 GHz Industrial Scientific and Medical ISM band It is configured and controlled by the FPGA via a 3 wire serial data bus The UW2453 contains the entire receiver transmit ter VCO PLL and power amplifier necessary to implement an 802 11b radio The UW2453 can transmit and receive data at up to 11MBits s in the 802 11b mode It supports 802 11b channels 1 13 2 401 GHz to 2 472 GHz The data modulate the chan nel carrier in such a way so as to produce a spread spectrum signal within the 22 MHz channel bandwidth of the selected channel The channel numbers and associated frequen cies are listed below in Table 4 The Wi Fi channels have a certain amount of overlap with each other The further apart two channel numbers are the less the likelihood of interference If you encounter interfer ence with a neighboring WLAN change to a different channel For example use channels 1 6 and 11 to minimize any overlap 38 RabbitCore RCM4400W Table 4 Wi Fi Channel Allocations Channel gic ih aad ee gy 1 2 412 2 401 2 423 2 2 417 2 406 2 428 3 2 422 2 411 2 433
12. Insert standoffs between mounting holes and Prototyping Board Line up mounting holes with holes 9 0000000000000000000000 9099 on Prototyping Board QO00000 OOO0000000000 ae QO0000000000 mOO0O00000000000 i OOOO0000000000000 E OO0OO0000000000000 i OOOOOOO000000 La E OOOOO 00000000 I E o O fl O 83883883883 See Figure 4 Install the Module on the Prototyping Board NOTE It is important that you line up the pins on header J1 of the module exactly with socket RCMI on the Prototyping Board The header pins may become bent or damaged if the pin alignment is offset and the module will not work Permanent electrical dam age to the module may also result if a misaligned module is powered up Press the module s pins gently into the Prototyping Board socket press down in the area above the header pins For additional integrity you may secure the RCM4400W to the standoffs from the top using the remaining three screws and washers 12 RabbitCore RCM4400W 2 2 4 Step 4 Connect Programming Cable The programming cable connects the module to the PC running Dynamic C to download programs and to monitor the module during debugging Connect the 10 pin connector of the programming cable labeled PROG to header J2
13. S IA7 T SWR 18 PB2 Input Output External I O Address TAO SRD 19 PB3 Input Output External I O Address IAI SAO 20 PB4 Input Output External I O Address IA2 SAI 21 PBS Input Output External I O Address IA3 ISCS 22 PB6 Input Output External I O Address IA4 ISLAVATN 23 PB7 Input Output External I O Address IAS 30 RabbitCore RCM4400W Table 2 RCM4400W Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes TXD TO Strobe I0 Timer CO TCLKF 24 PCO Input Output RXD TXD Serial Port D T O Strobe I1 25 PC1 Input Output Timer C1 RCLKF Input Capture TXC TXF 26 PC2 Input Output I O Strobe 12 Timer C2 RXC TXC RXF Serial Port C T O Strobe 13 27 PC3 Input Output Timer C3 SCLKD Input Capture TXB T O Strobe 14 PWMO TCLKE 28 PC4 Input Output Header J1 Serial Port B shared RXB TXB with serial flash T O Strobe I5 29 PC5 Input Output PWMI RCLKE Input Capture TXA TXE 30 PC6 Input Output T O Strobe 16 PWM2 RXA TXA RXE I O Strobe I7 31 PC7 Input Output PWM3 SCLKC Input Capture Programming port T O Strobe I0 A20 Timer CO TCLKF INTO QRD1B 32 PEO Input Output OEM User s Manual Table 2 RCM4400W Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes Header J1 33 PEI Input Output TO Strobe I1 A21 Timer C1 RXD RCLKF INTI QRDIA Input Captur
14. Use macro definitions in the Defines tab in the Dynamic C Options gt Project Options menu to modify any parameter settings If you are not using DHCP set the IP parameters to values appropriate to your network _PRIMARY STATIC IP 10 10 6 100 _PRIMARY NETMASK 255 255 255 0 MY NAMESERVER 10 10 6 1 MY GATEWAY 10 10 6 1 Set the macro IFC_WIFI_ SSID to define a C style string to set the SSID of your access point as for example IFC_WIFI SSID My Access Point or use an empty string to associate with the strongest BSS available Alternatively you may create your own CUSTOM CONFIG LIB library modeled on the Dynamic C TCP_CONFIG LIB library Then use a TCPCONFIG macro greater than or equal to 100 which will invoke your CUSTOM _ CONFIG LIB library to be used Remember to add the CUSTOM_CONFIG LIB library to LIB DIR 2 If you are using DHCP change the definition of the TCPCONFIG macro to 5 The default value of 1 indicates Wi Fi with a static IP address Now compile and run the sample program Follow the menu options displayed in the Dynamic C STDIO window Press s to scan available access points Press a to scan access points and associate Press mto print WIFI MAC status Note that wifi ioct1l function calls with WIFI_SCAN do not return data directly since the scan takes a fair amount of time Instead callback functions are used The callback function is set with
15. e Mode _WIFI_MODE determines the mode WIFICONF_INFRASTRUCT for the infrastructure mode or WIFICONF_ADHOC for the ad hoc mode The default is shown below define WIFI MODE WIFICONF INFRASTRUCT User s Manual 67 e Your Own Channel WIFI_OWNCHANNEL determines the channel on which to operate The default is shown below define WIFI_OWNCHANNEL 0 The default 0 means that any valid channel may be used by the requested SSID This parameter is mandatory when creating an ad hoc network While it is optional for the infrastructure mode it is usually best left at the default 0 Note that there are restrictions on which channels may be used in certain countries These are provided in Table 5 for some countries e Region Country WIFI_REGION_ REQ sets the channel range and maximum power limit to match the region selected Table 5 lists the regions that are supported and their corresponding macros The region selected must match the region where the RCM4400W RabbitCore module will be used The default is shown below define WIFI REGION REQ AMERICAS REGION e Disable enable WEP encryption WIFI WEP FLAG indicates whether or not WEP encryption is being used The default WEP encryption disabled is shown below define WIFI WEP_FLAG WIFICONF_WEP_DISABLE The following WEP encryption options are available e WIFICONF _WEP_DISABLE no WEP encryption is used e WIFICONF _WEP_ENABLE use WEP encryption You
16. the UW2453 Rx input In order to support this antenna sharing scheme the RCM4400W module operates the radio in a half duplex mode so that receive and transmit operations never occur at the same time The chip at U22 switches the receive transmit functionality between the outputs at J3 and J4 not stuffed so that J3 is transmitting while J4 would be receiving and vice versa Dynamic C does not support a J4 output OEM User s Manual 39 There are two LEDs close to the RP SMA antenna connector at J3 a green LED at DS1 LINK to indicate association with the Wi Fi access point and a yellow LED at DS2 ACT to indicate activity An RG316 coaxial cable may be used to extend the antenna up to 30 cm 1 ft This coaxial cable has an impedance of 50 Q and experiences 1 65 dB m signal loss at 2 4 GHz 4 2 3 Programming Port The RCM4400W is programmed via the 10 pin header labeled J2 The programming port uses the Rabbit 4000 s Serial Port A for communication Dynamic C uses the programming port to download and debug programs Serial Port A is also used for the following operations e Cold boot the Rabbit 4000 on the RCM4400W after a reset e Fast copy designated portions of flash memory from one Rabbit based board the master to another the slave using the Rabbit Cloning Board Alternate Uses of the Programming Port All three Serial Port A signals are available as e asynchronous serial port e an asynchronous serial port with the c
17. 232 header J4 high 28 29 PC4 PC5S Serial Port B used by serial flash on RCM4400W 30 31 PC6 PC7 Serial Port A programming port high 32 36 PEO PE4 Output high 37 38 PES PE6 Not available 39 PE7 Output pulled high 48 49 N A Not available 50 GND There is a 1 3 x 2 through hole prototyping space available on the Prototyping Board The holes in the prototyping area are spaced at 0 1 2 5 mm 3 3 V 5 V and GND traces run along the top edge of the prototyping area for easy access Small to medium circuits can be prototyped using point to point wiring with 20 to 30 AWG wire between the proto typing area the 3 3 V 5 V and GND traces and the surrounding area where surface mount components may be installed Small holes are provided around the surface mounted components that may be installed around the prototyping area 104 RabbitCore RCM4400W B 4 1 Adding Other Components There are pads for 28 pin TSSOP devices 16 pin SOIC devices and 6 pin SOT devices that can be used for surface mount prototyping with these devices There are also pads that can be used for SMT resistors and capacitors in an 0805 SMT package Each component has every one of its pin pads connected to a hole in which a 30 AWG wire can be soldered standard wire wrap wire can be soldered in for point to point wiring on the Prototyping Board Because the traces are very thin carefully determine which set of holes is con nected to whic
18. 256 through 2346 hie omer char 0 0 through 2347 THRESH WIFI SCANCB void 0 Pointer to the scan callback function call WIFI_SCAN NULL 0 Initiates a Wi Fi scan WIFI STATUSGET wifi status 0 Returns status information In the data column char indicates that data argument is a string and the len field is ignored char indicates that the argument is a character array and Len indicates the size If you don t want encryption enabled do not execute the WIFI_WEP FLAG command in the table RETURN VALUE 0 success 1 error invalid command or parameter 72 RabbitCore RCM4400W Use each command macro in its own wifi_ioct1 function call For example to name the rabbit access point and set a transmit rate of 11 Mbits s you would have these two lines of code in your program int wifi ioctl IF WIFIO WIFI_SSID rabbit 0 int wifi ioctl IF WIFIO WIFI_TX_ RATE WIFICONF RATE 11MBPS 0 Let s look at the individual wifi ioct1 commands and their macro options WIFI_SSID An SSID service set identifier names a specific wireless LAN WLAN All devices on a single WLAN must share a common SSID Set this value to your WLAN s SSID If you leave the SSID blank the Rabbit based device will associate automatically with the access point that has the strongest signal Generally it is best to set the SSID explicitly so that the device does not join a WLAN that you were not expecting it to join For an
19. 6 2 4 Wi Fi Sample Programs ee orrie a E aa ENIE OEI ERER SEENE RE ERIE te 61 6 2 4 1 Wi Fi Operating Region Configuration i 61 6 2 4 2 Wi Fi Operations sieves fici Aha ie ld AAA alia elas ia 63 6 2 5 RCM4400W Sample Programs ceeeeeceseeeeceeeeseeeseeseseneeseeceveneeseecseesaecaecnaesaeceeeeseeneeaeeas 65 6 3 Dynamic C Wi Fi Configurations eeseeenceesecessecescecseesseeeeneecsecececseecsaeceaceceeeeneceseecaeeeneeuees 67 6 3 1 Configuring Dynamic C at Compile Time i 67 6 3 2 Configuring Dynamic C at Run Time ececeeeeceeeeeeceseeeeecaeesaecaaesaecaecsseesaecsecsseeneensees 71 6 3 3 Other Key Function Calls 81 6 4 Where Do I Go From Here Treen renea epe e aa Eaei EERE eE a aE eies 82 Appendix A RCM4400W Specifications 83 A 1 Electrical and Mechanical Characteristics i 84 ALT Antena nee sees nde nc LG ae a ee 88 A 1 2 Headers cca han RARA AA RO IA cee eer eee 89 A 2 Rabbit 4000 DC Characteristics ii 90 A 3 I O Buffer Sourcing and Sinking Limit i 91 AA Bus Loading soi siasi biologia inline lina sala elica 91 ALS Conformal Coating ws sno nada lia Rara a e LL Li 94 A 6 Jumper Configurations scoenen ei E ea E E Eaa oaeeo ua 95 Appendix B Prototyping Board 97 Bi1 Introduction E E S E E we oie E 98 B 1 1 Prototyping Board Features fert esee patser i 99 B 2 Mech
20. 6 DED nni 3392 JP2 3 3 V current mea EUT iiia 8 i a atl DAMEN GS athe a2 SUFEMIENE se e nee 108 FCC 6 E JP20 LNS buffer filter to Industry Canada 7 BO MUON aria 19 ndustry Cana f Japan silice 8 exclusionzone 85 palio labeling requirements 7 RCM4400W eth 110 clock doubler 43 F JP22 LN7 buffer filter to conformal coating 94 features 2 ES asi 119 siii JP23 analog inputs LN4 D Prototyping Boards 98 99 LN6 configuration 110 flash memory addresses JP24 analog inputs LNO Development Kit 4 user blocks iii 44 LN3 configuration 110 AC adapter 4 H JP3 JP4 PCO TxD LED Getting Started instructions 4 DS2 ui 108 programming cable 4 hardware connections JP5 JP6 PC1 RxD Switch install RCM4400W on Proto Srila 109 typing Board 12 JP7 JP8 PC2 TxC LED power supply 14 DSS criari 109 programming cable 13 JP9 JP10 PC3 RxC Switch S3 109 OEM User s Manual 115 jumper configurations cont d RCM4400W ooo 95 JP1 FPGA chip select PE6 or SMODE output on J1 Ron air 95 JP2 FPGA interrupt output PES or SMODEO output on J2 95 JP3 PE7 or STATUS output on J1 95 JPA re 95 jumper locations 95 L labeling requirements 7 LEDs Wi Fi associati
21. 7 0 39 10 0 Figure A 3 RCM4400W Development Kit Dipole Antenna NOTE All measurements are in inches followed by millimeters enclosed in parentheses All dimensions have a manufacturing tolerance of 0 01 0 25 mm 88 RabbitCore RCM4400W A 1 2 Headers The RCM4400W uses a header at J1 for physical connection to other boards J1 is a2 x 25 SMT header with a 1 27 mm pin spacing J2 the programming port is a 2 x 5 header with a 1 27 mm pin spacing Figure A 4 shows the layout of another board for the RCM4400W to be plugged into These reference design values are relative to one of the mounting holes RCM4400W Series Footprint ta IN A 29 gt aR 416 0 284 gt 7 2 0 334 12 0 62 lt 8 5 7 lt 18 T 16 Figure A 4 User Board Footprint for RCM4400W OEM User s Manual 89 A 2 Rabbit 4000 DC Characteristics Table A 2 Rabbit 4000 Absolute Maximum Ratings Symbol Parameter Maximum Rating Ta Operating Temperature 40 to 85 C Ts Storage Temperature 55 to 125 C Vin Maximum Input Voltage y VDDjo Maximum Operating Voltage 3 6V Stresses beyond those listed in Table A 2 may cause permanent damage The ratings are stress ratings only and functional operation of the Rabbit 4000 chip at these or any other conditions beyond those indicated in this section is not impli
22. DOMAIN l1 enable 802 11d country info capability WIFI COUNTRY _ lata 0 0 through 9 to set channel range and power SET limits for selected country see Table 5 WIFI COUNTRY_ wifi 0 Data structure with country specific GET country information WIFICONF INFRASTRUCT or WIFI MODE char 0 oe WIFICONF ADHOC WIFI _OWNCHAN char 0 0 through 13 decimal coded string WIFICONF WEP DISABLE WIFI WEP FLAG char 0 WIFICONF WEP ENABLE or WIFICONF WEP TKIP User s Manual 71 cmd data len Description WIFI WEP _USEKEY char 0 0 through 3 WIFI WEP KEYO char 5 or 13 64 bit or 128 bit key WIFI WEP KEY1 char 5 or 13 64 bit or 128 bit key WIFI WEP KEY2 char 5 or 13 64 bit or 128 bit key WIFI WEP KEY3 char 5 or 13 64 bit or 128 bit key WIFICONF AUTH OPEN SYS WIFI AUTH char 0 WIFICONF AUTH SHARED KEY or WIFICONF AUTH ALL WIFI WPA PSK ASCII string of 1 to 63 characters null PASSPHRASE char 0 terminated sets a key for the previously specified WIFI SSID value WIFI WPA PSK ASCII string of exactly 64 hexadecimal char 0 characters null terminated sets the WPA PSK HEX master key WIFICONF RATE 1MBPS WIFICONF _ Li ES A RATE 2MBPS WIFICONF RATE 5_ e a 5MBPS WIFICONF RATE 11MBPS or WIFICONF RATE ANY WIFI TX POWER ee 0 0 through 15 the actual range used Sii depends on the country setting WIFI FRAG oma A mn mn m n THRESH char 0 0 off or
23. Power must be applied to the module through the Prototyping Board Refer to Chapter 2 Getting Started if you need further information on these steps To run a sample program open it with the File menu then compile and run it by pressing F9 Each sample program has comments that describe the purpose and function of the pro gram Follow the instructions at the beginning of the sample program Complete information on Dynamic C is provided in the Dynamic C User s Manual OEM User s Manual 19 3 2 Sample Programs Of the many sample programs included with Dynamic C several are specific to the RCM4400W modules These programs will be found in the SAMPLES RCM4 40 0w folder e CONTROLLED C Demonstrates use of the digital outputs by having you turn LEDs DS2 and DS3 on the Prototyping Board on or off from the STDIO window on your PC Parallel Port B bit 2 LED DS2 Parallel Port B bit 3 LED DS3 Once you compile and run CONTROLLED C the following display will appear in the Dynamic C STDIO window lt lt Proto board LEDs pP From PC keyboard Select 22052 or 3 053 to toggle LEDs Press GQ To Quito gt Press 2 or 3 on your keyboard to select LED DS2 or DS3 on the Prototyping Board Then follow the prompt in the Dynamic C STDIO window to turn the LED ON or OFF A logic low will light up the LED you selected e FLASHLED1 C demonstrates the use of assembly language to flash LEDs DS2 and DS3
24. T network User s Manual 53 802 11b interface cards implement all of the 802 11b low level configurations in firm ware In fact the 802 11b default configuration is often sufficient for a device to join an access point automatically which it can do once enabled Commands issued to the chip set in the interface allow a host program to override the default configurations and execute functions implemented on the interface cards for example scanning for hosts and access points 6 1 2 Ad Hoc Mode In the ad hoc mode each device can set a channel number and an SSID to communicate with If devices are operating on the same channel and SSID they can talk with each other much like they would on a wired LAN such as an Ethernet This works fine for a few devices that are statically configured to talk to each other and no access point is needed 6 1 3 Additional Information 802 11 Wireless Networking published by O Reilly Media provides further information about 802 11b wireless networks 54 RabbitCore RCM4400W 6 2 Running Wi Fi Sample Programs In order to run the sample programs discussed in this chapter and elsewhere in this manual 1 Your module must be plugged in to the Prototyping Board as described in Chapter 2 Getting Started 2 Dynamic C must be installed and running on your PC 3 The programming cable must connect the programming header on the module to your PC 4 Power must be applied to the module throu
25. The structure elements have the following definitions ssid service set ID max length 32 ssid len SSID length in bytes channel channel number 1 13 bss_addr BSS ID access point MAC address bss_caps reserved wpa_info reserved erp info reserved rates reserved rates basic reserved atim reserved tx rate maximum transmit rate in 100 kbps rx signal received signal strength 0 107 78 RabbitCore RCM4400W WIFI_SCAN Initiates a Wi Fi scan When the scan has been completed the configured scan callback function see above will be called The callback function must have already been config ured before using this command A Wi Fi scan will interrupt the network connectivity briefly since the scan must iterate through the channels on the wireless network WIFI_STATUSGET When using this command you must ensure there is enough space for the entire data structure Be sure the data pointer points to a buffer that is large enough to hold sizeof wifi status This command returns status information into the user supplied buffer or data structure area The wifi status structure has the following definition typedef struct wln state state uint8 ssid WLN SSID SIZE int ssid len int channel mac _addr bss addr uint16 bss caps uint8 wpa info WLN WPAIE SIZE uint32 authen uint32 encrypt int tx rate int rx rate int rx signal int tx power uint8 country info WLN COUNTRY STRLEN
26. an earlier wifi _ioct1l function call wifi ioctl IF WIFIO WIFI SCANCB scan callback 0 wifi ioctl IF WIFIO WIFI_SCAN 0 0 The data passed to the callback function are ephemeral since another scan may occur Thus the data need to be used or copied during the callback function While waiting for user input it is important to keep the network alive by calling tcp _tick NULL regularly 64 RabbitCore RCM4400W 6 2 5 RCM4400W Sample Programs The following sample programs are in the Dynamic C SAMPLES RCM4400W TCPIP folder e BROWSELED C This program demonstrates a basic controller running a Web page Two device LEDs are created along with two buttons to toggle them Users can use their Web browser to change the status of the lights The DS2 and DS3 LEDs on the Prototyping Board will match those on the Web page As long as you have not modified the TCPCONFIG 1 macro in the sample program enter the following server address in your Web browser to bring up the Web page served by the sample program Remember to configure the access point to match the default settings of the TCPCONFIG 1 macro http 10 10 6 100 Otherwise use the TCP IP settings you entered in the in the Defines tab in the Dynamic C Options gt Project Options menu e PINGLED C This program demonstrates ICMP by pinging a remote host It will flash LED DS2 on the Prototyping Board when a ping is sent and it will flash LED DS3 when a ping is
27. antenna connector will extend outside the enclosure Keep the thickness of the enclosure plus washer and lock nut to less than 0 2 5 mm to make sure that the antenna can be mounted securely in the RP SMA antenna connector OEM User s Manual 85 Table A 1 lists the electrical mechanical and environmental specifications for the RCM4400W Table A 1 RCM4400W Specifications Parameter RCM4400W Microprocessor Rabbit 4000 at 58 98 MHz Data SRAM 512KB Program Execution Fast SRAM 512KB Flash Memory 512KB 1MB Serial Flash Memory reserved for Wi FI FPGA 800KB available when using Dynamic C v 10 54 or later Backup Battery Connection for user supplied backup battery to support RTC and data SRAM General Purpose I O up to 38 parallel digital I 0 lines configurable with four layers of alternate functions Additional Inputs Reset in Additional Outputs Reset out Can be configured for 8 data lines and Auxiliary I O Bus 6 address lines shared with parallel I O lines plus I O read write Serial Ports 6 high speed CMOS compatible ports e all 6 configurable as asynchronous with IrDA 4 as clocked serial SPI and 2 as SDLC HDLC 1 asynchronous clocked serial port shared with pro gramming port 1 clocked serial port shared with serial flash Serial Rate Maximum asynchronous baud rate CLK 8 Slave Interface Slave port allows the RCM4400W to be used as an intelli
28. connections have been made you can connect power to the Prototyping Board If you have the universal AC adapter prepare the AC adapter for the country where it will be used by selecting the appropriate plug Snap in the top of the plug assembly into the slot at the top of the AC adapter as shown in Figure 5 then press down on the plug until it clicks into place Connect the AC adapter to 3 pin header J1 on the Prototyping Board as shown in Figure 5 above The connector may be attached either way as long as it is not offset to one side the center pin of J1 is always connected to the positive terminal and either edge pin is ground Plug in the AC adapter The PWR LED on the Prototyping Board next to the power con nector at J1 should light up The RCM4400W and the Prototyping Board are now ready to be used NOTE A RESET button is provided on the Prototyping Board next to the battery holder to allow a hardware reset without disconnecting power To power down the Prototyping Board unplug the power connector from J1 You should disconnect power before making any circuit adjustments in the prototyping area changing any connections to the board or removing the RCM4400W from the Prototyping Board 14 RabbitCore RCM4400W 2 3 Run a Sample Program If you already have Dynamic C installed you are now ready to test your programming connections by running a sample program Start Dynamic C by double clicking on the Dynamic C icon on your
29. flash memory addresses at run time is discouraged Instead define a user block area to store persistent data The functions writeUserBlock and readUserBlock are provided for this Refer to the Rabbit 4000 Microprocessor Designer s Handbook for additional information 4 5 3 Serial Flash The 1MB serial flash memory on the RCM4400W is used to bootstrap the FPGA for the Wi Fi circuits and was not available for customer use Starting with Dynamic C v 10 54 it is possible to access 800KB of the serial flash for customer use as long as your applica tion does not try to access the serial flash during the first call to sock_init 44 RabbitCore RCM4400W 5 SOFTWARE REFERENCE Dynamic C is an integrated development system for writing embedded software It runs on an IBM compatible PC and is designed for use with single board computers and other devices based on the Rabbit microprocessor Chapter 5 describes the libraries and function calls related to the RCM4400W 5 1 More About Dynamic C Dynamic C has been in use worldwide since 1989 It is specially designed for program ming embedded systems and features quick compile and interactive debugging A com plete reference guide to Dynamic C is contained in the Dynamic C User s Manual You have a choice of doing your software development in the flash memory or in the static SRAM included on the RCM4400W The flash memory and SRAM options are selected with the Options gt Program O
30. is in the Program Mode Refer to the Rabbit 4000 Microprocessor User s Manual for more information on the pro gramming port 4 3 2 Standalone Operation of the RCM4400W Once the RCM4400W has been programmed successfully remove the programming cable from the programming connector and reset the RCM4400W The RCM4400W may be reset by cycling the power off on or by pressing the RESET button on the Prototyping Board The RCM4400W module may now be removed from the Prototyping Board for end use installation CAUTION Power to the Prototyping Board or other boards should be disconnected when removing or installing your RCM4400W module to protect against inadvertent shorts across the pins or damage to the RCM4400W if the pins are not plugged in cor rectly Do not reapply power until you have verified that the RCM4400W module is plugged in correctly 42 RabbitCore RCM4400W 4 4 Other Hardware 4 4 1 Clock Doubler The RCM4400W takes advantage of the Rabbit 4000 microprocessor s internal clock doubler A built in clock doubler allows half frequency crystals to be used to reduce radiated emissions The 58 98 MHz frequency specified for the RCM4400W is generated using a 29 49 MHz crystal The clock doubler should not be disabled since Wi Fi operations depend highly on CPU resources 4 4 2 Spectrum Spreader The Rabbit 4000 features a spectrum spreader which helps to mitigate EMI problems The spectrum spreader is on by default but it
31. options may be used alone or in any combination The three sample programs in the Dynamic C Samples TCPIP WiFi Regulatory folder illustrate the use of these three options e REGION COMPILETIME C demonstrates how you can set up your RCM4400W based system at compile time to operate in a given country or region to meet power and channel requirements The country or region you select will automatically set the power and channel require ments to operate the RCM4400W module Rabbit recommends that you check the reg User s Manual 61 ulations for the country where your system incorporating the RCM4400W will be deployed for any other requirements Any attempt to operate a device outside the allowed channel range or power limits will void your regulatory approval to operate the device in that country Before you compile and run this sample program uncomment the define WIFI REGION REQ line corresponding to the region where your system will be deployed The Americas region will be used by default if one of these lines is not uncommented Now compile and run this sample program The Dynamic C STDIO window will dis play the region you selected The sample program also allows you to set up the TCP IP configuration and set the IP address and SSID as shown in the sample code below define TCPCONFIG 1 define PRIMARY STATIC IP 10 10 6 170 define WIFI SSID olmtest REGION MULTI_DOMAIN C demonstrates how the multi domain options from
32. periodically switch flow control on or off to demonstrate the effect of flow control If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable and reset the sending board so that the module is operating in the Run mode Connect TxC TxD and GND on the sending board to RxC RxD and GND on the other board then with the programming cable attached to the other module run the sample program PARITY C This program demonstrates the use of parity modes by repeatedly sending byte values 0 127 from Serial Port C to Serial Port D pia The program will switch between generating parity or not on Serial e UB a Port C Serial Port D will always be checking parity so parity errors should occur during every other sequence To set up the Prototyping Board you will need to tie TxC and RxD together on the RS 232 header at J4 using one of the jumpers supplied in the Development Kit as shown in the diagram The Dynamic C STDIO window will display the error sequence SERDMA C This program demonstrates using DMA to transfer data from a circular buffer to the serial port and vice versa The Dynamic C STDIO window is used to view or clear the buffer Before you compile and run the sample program you will need to connect the RS 232 header at J4 to your PC as shown in the diagram using the serial to DB9 cable Colored supplied in the Development Kit e
33. programs 20 getting to know the RCM4400W CONTROLLED C 20 FLASHLEDL C 20 FLASHLED2 C 20 TAMPERDETECTION C EEE E ENEA 21 TOGGLESWITCH C 21 onboard serial flash SERIAL_FLASHLOG C 25 SFLASH_INSPECT C 25 PC notebook configuration 59 real time clock RTC_TEST C 25 SETRTCKB C 25 serial communication FLOWCONTROL C 22 IOCONFIG_ SWITCHECHO C 24 PARITY C concezione 22 SERDMA C oe 22 SIMPLE3WIRE C 23 SIMPLESWIRE C 23 SWITCHCHAR C 23 TCP_CONFIG LIB 58 USERBLOCK_CLEAR C 48 USERBLOCK_INFO C 47 Wi Fi BROWSELED C 65 PINGLED C 65 PINGLED_STATS C 65 PINGLED_WPA_PSK C wiht fi Shae 65 POWERDOWN C 66 SMTP C pria 66 WIFI _SCAN C 61 63 WIFI_SCANASSOCI Wi Fi network configura TOD sica 58 Wi Fi regulatory setup operating region configura TON 3 35252 61 REGION_COMPILE TIME C aane 61 REGION_MULTI_ DOMAIN C 62 REGION_RUNTIME_ PING Carnin 62 serial communication 36 function calls 47 Prototyping Board RS 232 iaia no 106 software PACKET LIB 47 RS232 LIBinlanaini 47 serial flash software FAT_CONFIG LIB 48 SFLASH LIB 48 SFLASH_FAT LIB 48 serial ports eee eee 36 programming pott 4
34. received Before you compile and run this sample program change PING_WHO to the host you want to ping You may modify PING_DELAY define to change the amount of time in milliseconds between the outgoing pings Uncomment the VERBOSE define to see the incoming ping replies e PINGLED STATS C This program is similar to PINGLED C but it also displays receiver transmitter statistics in the Dynamic C STDIO window Before you compile and run this sample program change PING_WHO to the host you want to ping You may modify PING_DELAY define to change the amount of time in milliseconds between the outgoing pings Modify the value in the MOVING_AVERAGE macro to change the moving average filter ing of the statistics Also review the GATHER_ INTERVAL and GRAPHICAL macros which affect the number of samples to gather and create a bar graph display instead of a numeric display Uncomment the VERBOSE define to see the incoming ping replies e PINGLED WPA PSK C This program demonstrates the use of WPA PSK Wi Fi Protected Access with Pre Shared Key WPA is a more secure replacement for WEP The implementation in the sample program supports use of the TKIP Temporal Key Integrity Protocol cypher suite The sample program uses macros to configure the access point for WPA PSK specify the TKIP cypher suite assign the access point SSID and set the passphrase define WIFI_USE WPA Bring in WPA support define WIFI WEP FLAG WIFICONF WEP TKIP
35. the access point e MAC the hardware MAC address of access point e Access Point SSID the SSID the access point is using OEM User s Manual 15 2 3 1 Troubleshooting If you receive the message Could Not Open Serial Port check that the COM port assigned to the USB programming cable was identified and set up in Dynamic C as described in the preceding section If you receive the message No Rabbit Processor Detected the programming cable may be connected to the wrong COM port a connection may be faulty or the target system may not be powered up First check to see that the power LED on the Prototyping Board is lit If the LED is lit check both ends of the programming cable to ensure that it is firmly plugged into the PC and the programming header on the RCM4400W with the marked colored edge of the programming cable towards pin 1 of the programming header Ensure that the module is firmly and correctly installed in its connectors on the Prototyping Board If Dynamic C appears to compile the BIOS successfully but you then receive a communi cation error message when you compile and load a sample program it is possible that your PC cannot handle the higher program loading baud rate Try changing the maximum download rate to a slower baud rate as follows e Locate the Serial Options dialog on the Communications tab in the Dynamic C Options gt Project Options menu Select a slower Max download baud rate Click OK to save
36. wifi status The structure elements have the following definitions state association state one of WUN ST xxx see below ssid current service set ID SSID ssid len service set ID length channel current channel 1 13 bss_ addr BSS ID access point MAC address bss caps reserved wpa_ info reserved authen reserved encrypt reserved tx rate current transmit rate in 100 kbps rx rate last received rate in 100 kbps rx signal last received signal strength 0 107 tx power reserved country info reserved User s Manual 79 The state structure element can provide more information on the current state of the Wi Fi driver It can have the following values WLN ST STOPPED Wi Fi driver is stopped WLN ST SCANNING currently performing a scan WLN ST ASSOC ESS associated with an access point WLN ST AUTH ESS authenticated with an access point WLN ST JOIN IBSS joined an existing ad hoc network WLN ST START _ IBSS started an ad hoc network 80 RabbitCore RCM4400W 6 3 3 Other Key Function Calls Remember to call sock_init after all the Wi Fi parameters have been defined The Wi Fi interface will be up automatically as long as you configured Dynamic C at compile time with one of the TCPCONFIG macros Otherwise the Wi Fi interface is neither up nor down and must be brought up explicitly by calling either ifup IF_WIFI0 or ifconfig IF _WIFIO You must bring the interface down when you confi
37. 0 receive line not pulled up 37 Serial Port B serial flash 36 Serial Port E configuration informa TOT ERRORE OR 24 36 Serial Port F configuration informa HOM sario 24 36 SOMWALE zii 5 auxiliary I O bus 35 47 VO drivers 47 libraries TCP_CONFIG LIB 67 regulatory compliance 5 serial communication drivers Wien e CTER 47 seral flasfi iacianat 48 Wi Fi configuration at compile time 67 configuration macros 67 access point SSID 67 authentication 69 enable disable WEP encryption 68 116 RabbitCore RCM4400W software Wi Fi configuration at compile time configuration macros continued encryption keys 68 fragmentation threshold iaia 70 MOB 67 other macros 70 region country 68 RTS threshold 70 select encryption key 68 set WPA hex key 69 set WPA passphrase 69 WPA encryption 69 your own channel 68 network configuration 67 TCPCONFIG macro 67 Wi Fi configuration at run UME ssi 71 Wi Fi drivers 48 specifications bus loading 91 digital I O buffer sourcing and sinking limits 91 exclusion zone 85 header footprint 89 Prototyping Board 102 Rabbit 4000 DC characteris UES seen hia E EE 90 Rabbit 4000 t
38. 1 3 1 RCM4400W Development Kit i 4 13 2 SOMW ANC cs seccetcenscasevtesacssocsdanees unebacdeesiios pein tes unevustceshtincivessseucelwletouaceddnseveesedaes ENEA raK ROS EIKES ESETA 5 1 3 3 Online Documentatt OMe 2 ssceeccevedscaseessssessscbetecestizecdsveteiiacssceesscdeascessbeveuadeccedencansncsdhccnatevacestachei s 5 VAS Certifications ARR RR RR A 6 14 4 BCE Part 13 Class Bca iaia e iaia 6 14 2 Industry Canada Labelinp c lanir arrive RIE niente EEE 7 1 4 3 Japan Labelig u rana Hani ilaria ein ia 8 VELE Ur Oe oases REFER OR AR E RI EEA A REIT ARRE 8 Chapter 2 Getting Started 9 2 1 Instali Dynamic C srneno narnia aaa 9 2 2 Hardware Connection S epromo vers e aaa aa ear 10 2 2 1 Step 1 Prepare the Prototyping Board for Development ii 10 2 2 2 Step 2 Attach the Antenna to the RCM4400W Module iii 11 2 2 3 Step 3 Attach Module to Prototyping Board i 12 2 2 4 Step 4 Connect Programming Cable i 13 22 9 Step 3 Connect POWEL cen sorsien iernii ienei K EErEE EEE EEEE NEEE rE EAEE nio 14 2 3 Run a Sample Programi eserita aE LARE aime ee tee ee 15 25 1 Troubleshoonmns a asino 16 24 Where Do1 Go From Here sssccis icc sacevcesdascask iaeiae aea a iaiaeiaeiaa b aa Ea 17 2AT Technical SUppol tacs ecane ees cea eE REEE E OEE REE EEEE REEERE En EEEE aE EEEE AEREE 17 Chapter 3 Running Sample Programs 19 3
39. 10 6 101 Default gateway 10 10 6 1 Subnet mask 255 255 255 0 Default gateway 10 10 6 1 TIP If you are using a PC that is already on a network you will disconnect the PC Obtain DNS ser from that network to run these sample Use the folowing DIS server eckessses programs Write down the existing set poets n tings before changing them so that you Da J can restore them easily when you are fin ished with the sample programs OK Cancel The IP address and netmask need to be set regardless of whether you will be using the ad hoc mode or the infrastructure mode 3 Click lt OK gt or lt Close gt to exit the various dialog boxes Infrastructure Mode via wireless connection Set the IP address and netmask for your wireless enabled PC or notebook as described in Step 2 for Infrastructure Mode via Ethernet connection by clicking on Network Connections then on Local Area Connection Now click on Wireless Network Connection to select the wireless network you will be connecting to Once a sample program is running you will be able to select the network from a list of available networks You will have set your wireless network name with the WIFI_SSID macro for the infra structure mode as explained in Section 6 2 3 1 Network Wi Fi Configuration Ad Hoc Mode Set the IP address and netmask for your wireless enabled PC or notebook as described in Step 2 for Infrastructure Mode via Ethernet connect
40. 4 2 427 2 416 2 438 5 2 432 2 421 2 443 6 2 437 2 426 2 448 7 2 442 2 431 2 453 8 2 447 2 436 2 458 9 2 452 2 441 2 463 10 2 457 2 446 2 468 11 2 462 2 451 2 473 12 2 467 2 456 2 478 13 2 472 2 461 2 483 pi 2 484 2 473 2 495 not used These channels are disabled for units delivered for sale in the United States and Canada Many countries specify the channel range and power limits for Wi Fi devices operated within their borders and these limits are set automatically in the RCM4400W in firmware according to the country or region For example only channels 1 11 are authorized for use in the United States or Canada and so channels 12 and 13 are disabled See Section 6 2 4 1 for additional information and sample programs demonstrating how to configure an end device to meet the regulatory channel range and power limit requirements Table 5 pro vides additional information on which channels are allowed in selected countries Any attempt to operate a device outside the allowed channel range or power limits will void your regulatory approval to operate the device in that country U21 and U23 are bandpass filters to reduce the transmit and receive sideband noise levels The same antenna is used to transmit and receive the 802 11b RF signal An antenna switch isolates the high power RF Tx signal path from the RF Rx signal path The antenna switch works by alternately connecting the antennas to either the UW2453 Tx output or to
41. C and SCLKD outputs auto matically when Serial Ports C and D are set up as clocked serial ports Serial Ports E and F can also be configured as SDLC HDLC serial ports The IrDA proto col is also supported in SDLC format by these two ports Serial Ports E and F must be con figured before they can be used The sample program IOCONFIG_SWITCHECHO C in the Dynamic C SAMPLES RCM4400W SERIAL folder shows how to configure Serial Ports E and F 36 RabbitCore RCM4400W Table 3 summarizes the possible parallel port pins for the serial ports and their clocks Table 3 Rabbit 4000 Serial Port and Clock Pins TXA PC6 PC7 PD6 TXE PD6 PE6 PC6 Serial Port A RXA PC7 PD7 PE7 RXE PD7 PE7 PC7 Serial Port E SCLKA PBI RCLKE PDS PES PC5 TXB PC4 PC5 PD4 TCLKE PD4 PE4 PC4 Serial Port B RXB PC5 PD5 PES TXF PD2 PE2 PC2 SCLKB PBO RXF PD3 PE3 PC3 Serial Port F TXC PC2 PC3 RCLKF PD1 PEI PCI Serial Port C RXC PC3 PD3 PE3 TCLKF PDO PEO PCO SCLKC PD2 PE2 PE7 PC7 TXD PCO PCI RCLKE and RCLKF must be selected to be on the Serial Port D RXD PCI PD1 PEI same parallel port as TXE and TXF respectively SCLKD PDO PEO PE3 PC3 4 2 1 1 Using the Serial Ports The receive lines on the RCM4400W serial ports do not have pull up resistors If you are using the serial ports without a receiver chip for example for RS 422 RS 232 or RS 485 serial communication
42. CONF_ADHOC Access points are used with infrastructure networks and coordinates communication among all the associated devices No wireless access points are associated with the ad hoc mode This allows devices such as Rabbit based devices and notebooks to communicate with each other directly as peer devices without an access point WIFI_OWNCHAN This parameter specifies the channel the Wi Fi device uses in your network when operat ing in the ad hoc mode Set this parameter to 0 in an infrastructure network to allow the Wi Fi driver to pick the channel automatically for the given SSID For an ad hoc network this channel must be set to 1 through 13 Use the WIFI COUNTRY_GET command to get the valid range of channels for the country where the device will be used NOTE Regional regulations may not allow some channels to be used WIFI_WEP_FLAG The encryption flag can have one of three values disabled WIFICONF WEP DISABLE WEP encryption enabled WIFICONF_WEP_ENABLE or TKIP WPA encryption enabled WIFICONF WEP TKIP You can use either 40 bit 5 byte or 104 bit 13 byte keys for WEP Wired Equivalent Privacy WIFI_WEP_USEKEY Indicates which key 0 3 is the default transmission key The setting may be left at the 0 default The setting of the WEP keys is described below User s Manual 75 WIFI_WEP_KEY0 3 These are the secret keys that are programmed into each device on a WLAN to use WEP Wired Equivalent Priv
43. Electrical and Mechanical Characteristics Figure A 1 shows the mechanical dimensions for the RCM4400W 1 84 Ze D 47 gt t F Please refer to the RCM4400W footprint diagram later in this appendix for precise header locations Q 0 17 dia 0 125 dia 3 4 3 3 2 72 62 0 50 16 7 lt 13 7 0 50 e 13 gt 0 50 lt 13 gt Figure A 1 RCM4400W Dimensions NOTE All measurements are in inches followed by millimeters enclosed in parentheses All dimensions have a manufacturing tolerance of 0 01 0 25 mm 84 RabbitCore RCM4400W It is recommended that you allow for an exclusion zone of 0 04 1 mm around the RCM4400W in all directions when the RCM4400W is incorporated into an assembly that includes other printed circuit boards An exclusion zone of 0 08 2 mm is recom mended below the RCM4400W when the RCM4400W is plugged into another assembly Figure A 2 shows this exclusion zone Exclusion Zone Figure A 2 RCM4400W Exclusion Zone NOTE There is an antenna associated with the RCM4400W RabbitCore modules Do not use any RF absorbing materials in these vicinities in order to realize the maximum range If you are planning to mount your RCM4400W directly in a panel mounted enclosure the RP SMA
44. Introduction rallo E axed bad sa ewes bd OE E alal 19 3 2 Sample Programs siii REEE EEEE EE EEEE Ee 20 32 1 Serial COMMUNICATION sesse eisrean ein E eE e ENERE E EES NEEE OEE REEE NEEE No 22 Bid RealTime CICK srecen Nan aereo 25 3 2 3 Use of Serial Flash Dynamic C v 10 54 and later 25 Chapter 4 Hardware Reference 27 4 1 RCM4400W Digital Inputs and Outputs o 28 4 1 1 Memory VO Interateneo 35 4 1 2 Other Inputs and Outputs 2 c csveccsseccsvecsencescsensvsesnentoccsorveenssstorsenssontonscesbecdontenstaduaneseveebnegsntconeess 35 4 2 Serial Communication i 36 4 2 Serral Ports alia na he 36 421 1 Using the Serial Ports eee seciouhsccuscndabsvacesssunsbiresneva sean eaberschboonvenestbeness 37 422 WEI cilea RA RR a i ie 38 4 2 3 Programming Port na ieri ARE REL 40 4 3 Programming Cable cz siec saxcesccecaceescnvscccuscecuaccosgoies cdvansevsctuuscesuse sapere abaco riesi iaia 41 4 3 1 Changing Between Program Mode and Run Mode 41 4 3 2 Standalone Operation of the RCM4400W i 42 OEM User s Manual AA Other Hard Ware esses aneren oss deode e a a a AO EE EE esanndedabescesestdeubeabonseseaves 43 44 1 Clock Doubler acioacs aaa Lala pie Mal inietta 43 4 4 2 Spectrum Spreadets r mc roi e debetnSecess 43 45 Memory risaie RL Lal Sete AA pal aa shee ty 44 49 SRAM Agi iaia aa 44 4 52 Flash EPROM
45. PHRASE is a string that matches the pass phrase on your access point It may also point to a variable Define an ASCII passphrase here from 1 to 63 characters long This passphrase is only used if you did not specify a hexadecimal key for the WIFI_PSK_HEX macro The insecure default is shown below define WIFI PSK PASSPHRASE now is the time e Set WPA hexadecimal key WIFI_PSK_HEX is a string of hexadecimal digits that matches the 256 bit 64 byte hexadecimal key used by your access point Specify a 64 hexadecimal digit 32 bytes key here This key will be used and will over ride any passphrase set with the WIFI_PSK_PASSPHRASE macro The example hex key shown below define WIFI PSK HEX 57A12204B7B350C4A86A507A8AF23C0E81D0319F4C4C4AE83CE3299EFE1FCD27 is valid for the SSID rabbitTest and the passphrase now is the time Using a passphrase is rather slow It takes a Rabbit 4000 more than 20 seconds to gen erate the actual 256 bit key from the passphrase If you use a passphrase and define WIFI VERBOSE PASSPHRASE the Wi Fi library will helpfully print out the hex key corresponding to that passphrase and SSID Ifboth_WIFI_PSK_HEX and WIFI PSK PASSPHRASE are defined WIFI PSK HEX will be used and WIFI_PSK_PASSPHRASE will be ignored e Authentication algorithm WIFI AUTH MODE can be used to limit the authentication modes used The default shown below allows enables both open system authentication and shared key aut
46. a fragment rather than the whole frame This means that only the fragment will need to be retransmitted To be effective the fragmentation threshold will need to be set on all wireless devices on the network as well as on the access point WIFI_RTS_THRESH Sets the threshold in bytes beyond which an RTS request to send frame must be sent before the data frame can be sent This can sometimes help performance with busy net works although it is not used frequently User s Manual 77 WIFI_SCANCB Sets up a user callback function that will be called when a user requested scan has com pleted The callback function must have the following function prototype The name of the function may be different root void scan callback far wifi scan data data The scan data will be provided in the data parameter This structure has the following definition define WIFI SCAN NUM typedef struct int count wifi wln scan bss bss WIFI SCAN NUM wifi scan data count will have the number of access points that were detected bss is an array where each element corresponds to a detected access point wifi wln scan bss isa structure that has the following definition typedef struct uint8 ssid WLN SSID SIZE int ssid len int channel mac_addr bss addr uint16 bss caps uint8 wpa_info WLN WPAIE SIZE uint8 erp info uint16 rates uint16 rates basic uintl6 atim int tx rate int rx signal wifi wln scan bss
47. abbit s Technical Note TN257 Running Dynamic C With Windows Vista for additional information if you are using a Dynamic C under Windows Vista Programs can be downloaded at baud rates of up to 460 800 bps after the program compiles OEM User s Manual 45 Dynamic C has a number of standard features e Full feature source and or assembly level debugger no in circuit emulator required e Royalty free TCP IP stack with source code and most common protocols e Hundreds of functions in source code libraries and sample programs gt Exceptionally fast support for floating point arithmetic and transcendental functions gt RS 232 and RS 485 serial communication gt Analog and digital I O drivers gt I C SPI GPS file system gt LCD display and keypad drivers e Powerful language extensions for cooperative or preemptive multitasking e Loader utility program to load binary images into Rabbit targets in the absence of Dynamic C e Provision for customers to create their own source code libraries and augment on line help by creating function description block comments using a special format for library functions e Standard debugging features gt Breakpoints Set breakpoints that can disable interrupts gt Single stepping Step into or over functions at a source or machine code level uC OS II aware gt Code disassembly The disassembly window displays addresses opcodes mnemonics and machine cycle times Switc
48. able A 4 lists the capacitance for the various RCM4400W I O ports Table A 4 Capacitance of Rabbit 4000 I O Ports Input Output I O Ports Capacitance Capacitance pF pF Parallel Ports A to E 12 14 Table A 5 lists the external capacitive bus loading for the various RCM4400W output ports Be sure to add the loads for the devices you are using in your custom system and verify that they do not exceed the values in Table A 5 Table A 5 External Capacitive Bus Loading 20 C to 85 C Output Port Clock Speed Maximum External p MHz Capacitive Loading pF All I O lines with clock doubler enabled 58 98 100 OEM User s Manual 91 Figure A 5 shows a typical timing diagram for the Rabbit 4000 microprocessor external I O read and write cycles External I O Read no extra wait states k T1 gt lt Tw gt lt T2 gt el Mot Tap ed A 15 0 Tadr Sx LA TT TN Tosx Tes NOC TE a A Tlocsx Tiocs lt NORD TioRD TioRDi BUFEN TBUFEN TBUFEN gt setup lt D 7 0 hold lt External I O Write no extra wait states lt T1 gt lt Tw gt lt T2 gt ed LVII E A 15 0 Tadr ICS ff I DA csx Tes NOCSx X T TS SX I Tiocsx Tiocsx gt IIOWR lit TBUFEN TBUFENS D 7 0 TDHZV Toyz Figure A 5 External I O Read and Write Cycles No Extra Wait States NOTE IOCSx can
49. acy Each of these keys must be entered correctly in order for WEP to work Each of the four WEP keys is an array of either 5 or 13 binary bytes not an ASCII string Set len to 5 for a 40 bit key or 13 for a 104 bit key Marketing literature sometimes refers to these as 64 bit or 128 bit keys The 24 extra bits that are included in the marketing description serve as a cryptographic initialization vector WIFI_AUTH The authentication option is used to configure different types of authentication that the Wi Fi device supports There are three types of authentication that are supported open system authentication WIFICONF AUTH OPEN SYS shared key authentication WIFICONF AUTH SHARED KEY or both WIFICONF AUTH ALL The most important consideration is to use the same type of authentication as the access point you are planning on using hence WIFICONF_AUTH ALL is the most flexible value WIFI_WPA_PSK_PASSPHRASE This WPA option is only available if the WIFI_USE_WPA macro has been defined The command sets a key for the previously specified WIFI_ SSID value The key is com puted as a hash of the passphrase and the target SSID which could potentially take a long time to run See the PASSPHRASE C sample program for alternatives If your program or TCP configuration defines WIFI_PSK_PASSPHRASE to a quoted string then that string will be used automatically as a pass phrase unless_WIFI_PSK_ HEX is also defined see the following co
50. all to sock_ init If your application has written to the flash before calling sock init be sure to spin on sf_isWriting as shown in the sample code to ensure that the write is complete while sf isWriting waiting for write to complete before calling sock init sock init OEM User s Manual 49 5 2 7 Prototyping Board Function Calls The function calls described in this section are for use with the Prototyping Board features The source code is in the Dynamic C Rabbit4000 LIB RCM4xxx RCM44xxW LIB library if you need to modify it for your own board design The sample programs in the Dynamic C SAMPLES RCM4400w folder illustrate the use of the function calls Other generic functions applicable to all devices based on Rabbit microprocessors are described in the Dynamic C Function Reference Manual 5 2 7 1 Board Initialization brdInit void brdInit void DESCRIPTION Call this function at the beginning of your program This function initializes Parallel Ports A through E for use with the Prototyping Board This function call is intended for demonstration purposes only and can be modified for your applications Summary of Initialization 1 I O port pins are configured for Prototyping Board operation Unused configurable I O are set as tied outputs RS 232 is not enabled LEDs are off nan A WY N The slave port is disabled RETURN VALUE None 50 RabbitCore RCM4400W 5 2 7 2 Alerts
51. ances of up to 15 m 106 RabbitCore RCM4400W RS 232 flow control on an RS 232 port is initiated in software using the serXflowcon trolon function call from RS232 LIB where X is the serial port C or D The locations of the flow control lines are specified using a set of five macros SERX RTS PORT Data register for the parallel port that the RTS line is on e g PCDR SERA RTS SHADOW Shadow register for the RTS line s parallel port e g PCDRShadow SERA RTS BIT The bit number for the RTS line SERA CTS PORT Data register for the parallel port that the CTS line is on e g PCDRShadow SERA CTS BIT The bit number for the CTS line Standard 3 wire RS 232 communication using Serial Ports C and D is illustrated in the following sample code define CINBUFSIZE 15 set size of circular buffers in bytes define COUTBUFSIZE 15 define DINBUFSIZE 15 define DOUTBUFSIZE 15 define MYBAUD 115200 set baud rate endif main serCopen MYBAUD open Serial Ports C and D serDopen _MYBAUD serCwrFlush flush their input and transmit buffers serCrdFlush serDwrFlush serDrdFlush serCclose MYBAUD close Serial Ports C and D serDclose MYBAUD OEM User s Manual 107 B 5 Prototyping Board Jumper Configurations Figure B 6 shows the header locations used to configure the various Prototyping Board options via jumpers F 28 S Sea nei 1 P P 1 P P 1 P P 1 P 1
52. and at www rabbitcom forums e Use the Technical Support e mail form at www rabbit com support OEM User s Manual 17 18 RabbitCore RCM4400W 3 RUNNING SAMPLE PROGRAMS To develop and debug programs for the RCM4400W and for all other Rabbit hardware you must install and use Dynamic C This chapter provides a tour of its major features with respect to the RCM4400W 3 1 Introduction To help familiarize you with the RCM4400W modules Dynamic C includes several sam ple programs Loading executing and studying these programs will give you a solid hands on overview of the RCM4400W s capabilities as well as a quick start with Dynamic C as an application development tool This chapter provides sample programs that illustrate the digital I O and serial capabilities of the RCM4400W RabbitCore module Section 6 2 4 discusses the sample programs that illustrate the Wi Fi features NOTE The sample programs assume that you have at least an elementary grasp of the C language If you do not see the introductory pages of the Dynamic C User s Manual for a suggested reading list In order to run the sample programs discussed in this chapter and elsewhere in this manual 1 Your module must be plugged in to the Prototyping Board as described in Chapter 2 Getting Started 2 Dynamic C must be installed and running on your PC 3 The programming cable must connect the programming header on the module to your PC 4
53. ange the above default macros or configurations 70 RabbitCore RCM4400W 6 3 2 Configuring Dynamic C at Run Time There is one basic function call used to configure the Wi Fi settings wifi ioctl int wifi ioctl int iface int cmd char data int len DESCRIPTION This function call is used to configure the Wi Fi interface including setting the SSID the mode WEP keys etc It can also be used to get status information and to request a Wi Fi scan Note that the Wi Fi interface must be down when you are using the following commands that change the configuration WIFI_SSID WIFI MULTI DOMAIN WIFI_ COUNTRY SET WIFI MODE WIFI _OWNCHAN and WIFI_WEP_FLAG The wifi ioctl function description in the WIFI_WLN_ API LIB library provides sample code to demonstrate how to bring down the Wi Fi interface to change these configurations PARAMETERS specifies the Wi Fi interface number for the RCM4400W use IF WIFIO or IF DEFAULT iface The cmd data and len parameters are described in detail below Each cmd command has different requirements for the data and len parameters Note that these parameters are strings in all cases even for numeric parameters The Wi Fi interface must be down when you are using the shaded commands that change the configuration cmd data len Description WIFI_SSID char 0 32 Sets SSID string WIFI _ MULTI chars 0 0 disable 802 11d country info capability
54. anical Dimensions and Layout 101 RabbitCore RCM4400W B 3 Power Supply asili lalla nerina cya deb ca tee lirica 102 B 4 Using the Prototyping Board nani Lit 103 B 4 1 Adding Other Components i 105 B 4 2 Measuring Current Draw Gia ne Panna lai ei cala 105 B 4 3 Analog Feature Sc eeen ns AIR AR 106 B 4 4 Serial Communication sssrini iei E a e T E ER SERS RETIRE EKE NY 106 l e A E S E S E E P E E S E E Rn 106 B 5 Prototyping Board Jumper Configurations 108 Appendix C Power Supply 111 Crl Power Suppltes ssc s conch aches Seti heats See o a Hehe AA LAA EEEE E ES 111 C 1 1 Battery Backup iiisso iaia nali pala isla 111 C 1 2 Battery Backup Circhit ccri ae ie 112 G 1 3 Reset Generators sie siden in annie nulai 113 C l 41Onboard Power Supplies Latine liana Ani alia 113 Index 115 Schematics 119 OEM User s Manual RabbitCore RCM4400W 1 INTRODUCTION The RCM4400W RabbitCore modules adds Wi Fi 802 11b func tionality to the existing Rabbit 4000 microprocessor features to allow you to create a low cost low power embedded wireless control and communications solution for your embedded control system The Rabbit 4000 microprocessor features include hard ware DMA clock speeds of up to 60 MHz I O lines shared with up to six serial ports and four levels of alternate pin functions that include variable phase PWM auxiliary I O quadratu
55. at http 10 10 6 100 You will likely have to first configure your net work interface card for a 10Base T Half Duplex 100Base T Half Duplex or an Auto Negotiation connection on the Advanced tab which is accessed from the control panel Start gt Settings gt Control Panel by choosing Network Connections NOTE This sample program accesses the serial flash directly and may overwrite other data stored in the ustomer accessible 800KB area including the FAT file system Do not run this sample program if you have any important data on the serial flash device e SFLASH INSPECT C This program is a handy utility for inspecting the contents of a serial flash chip When the sample program starts running it attempts to initialize a serial flash chip on Serial Port B Once a serial flash chip is found the user can perform five different commands to print out the contents of a specified page set all bytes on the specified page to a single random value clear set to zero all the bytes in a speci fied page set all bytes on the specified page to a given value or save user specified text to a selected page OEM User s Manual 25 26 RabbitCore RCM4400W 4 HARDWARE REFERENCE Chapter 4 describes the hardware components and principal hardware subsystems of the RCM4400W Appendix A RCM4400W Specifica tions provides complete physical and electrical specifications Figure 6 shows the Rabbit based
56. ation This section shows how to configure your PC or notebook to run the sample programs Here we re mainly interested in the PC or notebook that will be communicating wirelessly which is not necessarily the PC that is being used to compile and run the sample program on the RCM4400W module This section provides configuration information for the three possible Wi Fi GIR oxi setups shown in Figure 11 Start by going 5 cer m fames He I to the control panel Start gt Settings gt BEE gt Un Control Panel and click on Network gma oror Connections The screen shots shown mi Ogg RT TESE ee here are from Windows 2000 and the A A interface is similar for other versions of Multimedia NetModem La Windows Network a Bi Check with your administrator if you are hardware sie Buc ee DE unable to change the settings as 2 ps Microsoft Home described here since you may need administrator privileges EJ My Computer When you are using an access point with your setup in the infrastructure mode you will also have to set the IP address and netmask e g 10 10 6 99 and 255 255 255 0 for the access point Check the documentation for the access point for information on how to do this Infrastructure Mode via Ethernet connection 1 Go to the Local Area Connection to select the network interface card used you intend to use e g TCP IP Xircom Credit Network 2 xl Configurat
57. automatically set the power and channel require ments to operate the RCM4400W module The following three options are available 1 Country or region is set at compile time This option is ideal when the end device is intended to be sold and used only in a single region If the end device is to be deployed across multiple regions this method would require an application image to be created for each region This option is the only approved option for RCM4400W modules in Japan 2 Country or region is set via the 802 11d feature of the access point This option uses beacons from an access point to configure the RCM4400W country or region automati cally The end user is responsible for enabling 802 11d on the access point and then selecting the correct country to be broadcast in the beacon packets NOTE This option sets the power limit for RCM4400W to the maximum level permitted in the region or the capability of the RCM4400W whichever is less Since the beacons are being sent continuously the wifi ioctl WIFI TX POWER function cannot be used with this option 3 Country or region is set at run time This is a convenient option when the end devices will be deployed in multiple regions A serial user interface would allow the RCM4400W module to be configured via a Web page Systems integrators would still have to make sure the end devices operate within the regulatory requirements of the country or region where the units are being deployed These
58. be programmed to be active low default or active high 92 RabbitCore RCM4400W Table A 6 lists the delays in gross memory access time for several values of VDDjo Table A 6 Preliminary Data and Clock Delays Clock to Address Worst Case VOD Output Delay Data Setup Spectrum Spreader Delay va ns Time Delay ns ns 0 5 ns setting 1 ns setting 2 ns setting SUBI BOPE 20pE no dbl dbl no dbl dbl no dbl dbl 3 3 6 8 11 1 2 3 2 3 3 4 5 4 5 9 1 8 18 24 33 3 7 6 5 8 12 11 22 The measurements are taken at the 50 points under the following conditions e T 20 C to 85 C V VDDjo 10 e Internal clock to nonloaded CLK pin delay lt 1 ns 85 C 3 0 V The clock to address output delays are similar and apply to the following delays e T qr the clock to address delay e Tcs the clock to memory chip select delay e Trocsx the clock to I O chip select delay e Tiorp the clock to I O read strobe delay e Trower the clock to I O write strobe delay e Tpuren the clock to I O buffer enable delay The data setup time delays are similar for both Tyetyp and Tpota When the spectrum spreader is enabled with the clock doubler every other clock cycle is shortened sometimes lengthened by a maximum amount given in the table above The shortening takes place by shortening the high part of the clock If the doubler is not enabled then every clock is shortened during the low part of the cl
59. d use the accompanying Prototyping Board NOTE This chapter and this manual assume that you have the RCM4400W Develop ment Kit If you purchased an RCM4400W module by itself you will have to adapt the information in this chapter and elsewhere to your test and development setup 2 1 Install Dynamic C To develop and debug programs for the RCM4400W series of modules and for all other Rabbit hardware you must install and use Dynamic C If you have not yet installed Dynamic C version 10 11 or a later version do so now by inserting the Dynamic C CD from the Development Kit in your PC s CD ROM drive If autorun is enabled the CD installation will begin automatically If autorun is disabled or the installation does not start use the Windows Start Run menu or Windows Disk Explorer to launch setup exe from the root folder of the CD ROM The installation program will guide you through the installation process Most steps of the process are self explanatory Dynamic C uses a COM serial port to communicate with the target development system The installation allows you to choose the COM port that will be used The default selec tion is COM1 You may select any available port for Dynamic C s use If you are not cer tain which port is available select COMI This selection can be changed later within Dynamic C NOTE The installation utility does not check the selected COM port in any way Speci fying a port in use by another devic
60. dd on Dynamic C modules including the popular uC OS II real time operating system as well as PPP Advanced Encryption Standard AES RabbitWeb and other select libraries Each Dynamic C add on module has complete documentation and sample programs to illustrate the functionality of the software calls in the module Visit our Web site at www rabbit com for further information and complete documentation for each module In addition to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase 52 RabbitCore RCM4400W 6 USING THE WI FI FEATURES 6 1 Introduction to Wi Fi Wi Fi a popular name for 802 11b refers to the underlying technology for wireless local area networks WLAN based on the IEEE 802 11 suite of specifications conforming to standards defined by IEEE IEEE 802 11b describes the media access and link layer con trol for a 2 4 GHz implementation which can communicate at a top bit rate of 11 Mbits s Other standards describe a faster implementation 54 Mbits s in the 2 4 GHz 802 11g and a 54 Mbits s implementation in the 5 6 GHz band 802 11a The adoption of 802 11 has been fast because it s easy to use and the performance is comparable to wire based LANS Things look pretty much like a wireless LAN Wi Fi 802 11b is the most common and cost effective implementation currently avail able This is the implementation that is used with th
61. desktop or in your Start menu Select Code and BIOS in Flash Run in RAM on the Compiler tab in the Dynamic C Options gt Project Options menu Then click on the Communications tab and verify that Use USB to Serial Converter is selected to support the USB programming cable Click OK Determine which COM port was assigned to the USB programming cable on your PC Open Control Panel gt System gt Hardware gt Device Manager gt Ports and identify which COM port is used for the USB connection In Dynamic C select Options gt Project Options then select this COM port on the Communications tab then click OK You may type the COM port number followed by Enter on your computer keyboard if the COM port number is outside the range on the dropdown menu Now find the WIFISCAN C sample program in the Dynamic C Samples TCPIP WiFi folder open it with the File menu then compile and run the sample program by pressing F9 The Dynamic C STDIO window will display Starting scan and will display a list of access points ad hoc hosts as shown here SE wifi Dynamic C Dist 10 11 Stdio starting scan WiFi Scan Results 4 entries Channel signal MAC Access Point SSID 5 36 00 18 ba 72 db a0 9 20 00 14 a9 c8 47 c0 rs 18 00 09 5b f8 89 4b rabbit 4 14 00 19 2f fa 92 20 rabwpa2 The following fields are shown in the Dynamic C STDIO window e Channel the channel the access point is on 1 11 e Signal the signal strength of
62. device pads on both top and bottom of the Prototyping Board Each SMT pad is connected to a hole designed to accept a 30 AWG solid wire Module Extension Header The complete pin set of the RCM4400W module is duplicated at header J2 Developers can solder wires directly into the appropriate holes or for more flexible development a 2 x 25 header strip with a 0 1 pitch can be sol dered into place See Figure B 4 for the header pinouts NOTE The same Prototyping Board can be used for several series of RabbitCore mod ules and so the signals at J2 depend on the signals available on the specific RabbitCore module OEM User s Manual 99 e Analog Inputs Header The analog signals from a RabbitCore module are presented at header J3 on the Prototyping Board These analog signals are connected via attenuator filter circuits on the Prototyping Board to the corresponding analog inputs on the Rabbit Core module NOTE No analog signals are available on the Prototyping Board with the RCM4400W RabbitCore module installed since no analog signals are present on the RCM4400W s header J1 e RS 232 Two 3 wire or one 5 wire RS 232 serial ports are available on the Prototyp ing Board at header J4 A 10 pin 0 1 pitch header strip installed at J4 allows you to connect a ribbon cable that leads to a standard DE 9 serial connector e Current Measurement Option You may cut the trace below header JP1 on the bottom side of the Prototyping Board a
63. dge 3 Once you have compiled and run the sample program start Tera Term or another terminal emulation program to connect to the selected PC serial port at a baud rate of 115 200 bps You can observe the output in the Dynamic C STDIO window as you type in Tera Term and you can 3 also use the Dynamic C STDIO window to clear the dd buffer 8 8 The Tera Term utility can be downloaded from hp vector co jp authors VA002416 teraterm html 22 RabbitCore RCM4400W e SIMPLE3WIRE C This program demonstrates basic RS 232 serial communication Lower case characters are sent on TxC and are nas received by RxD The received characters are converted to upper case LL i TxD RxD GNI and are sent out on TxD are received on RxC and are displayed in the Dynamic C STDIO window To set up the Prototyping Board you will need to tie TxD and RxC together on the RS 232 header at J4 and you will also tie RxD and TxC together using the jumpers supplied in the Development Kit as shown in the diagram e SIMPLE5WIRE C This program demonstrates 5 wire RS 232 serial communication with flow control on Serial Port D and data flow on Serial Port C To set up the Prototyping Board you will need to tie TxD and RxD together on the RS 232 header at J4 and you will also tie TxC and an RxC together using the jumpers supplied in the Development K
64. dule with 2 4 GHz bec whip dipole antenna e Prototyping Board e Universal AC adapter 12 V DC 1 A includes Canada Japan U S Australia N Z U K and European style plugs Development Kits sold in North America may contain an AC adapter with only a North American style plug e USB programming cable with 10 pin header e 10 pin header to DB9 serial cable e Dynamic C CD ROM with complete product documentation on disk e Getting Started instructions e A bag of accessory parts for use on the Prototyping Board e Rabbit 4000 Processor Easy Reference poster e Registration card Programming Pa 6 g DIAG Cable S Universal AC Adapter 77 with Plugs Antenna ee LN Accessory Parts for Prototyping Board Serial lt lt Getting Started i Instructions Prototyping Board Figure 1 RCM4400W Development Kit 4 RabbitCore RCM4400W 1 3 2 Software The RCM4400W is programmed using version 10 21 or later of Dynamic C A compatible version is included on the Development Kit CD ROM RCM4400W RabbitCore modules labelled For development use only may be used with Dynamic C v 10 11 but any applications developed using Dynamic C v 10 11 will have to be recompiled with a future version of Dynamic C in order to run a
65. e 34 PE2 Input Output I O Strobe I2 A22 Timer C2 TXF DREQO QRD2B 35 PE3 Input Output TO Strobe 13 A23 Timer C3 RXC RXF SCLKD DREQI1 QRD2A Input Capture 36 PE4 Input Output I O Strobe 14 AO INTO PWMO TCLKE 37 FPGA Interrupt Output PES SMODEO Input Output TO Strobe I5 INTI PWMI RXB RCLKE Input Capture Not connected 38 FPGA Chip Select PE6 SMODEI Input Output I O Strobe I6 PWM2 TXE DREQO Not connected 39 PE7 STATUS Input Output TO Strobe I7 PWM3 RXA RXE SCLKC DREQI1 Input Capture PE7 is the default configuration 32 RabbitCore RCM4400W Table 2 RCM4400W Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes 40 PDO Input Output TO Strobe I0 Timer CO D8 INTO SCLKD TCLKF QRD1B 41 PDI Input Output IA6 TO Strobe I1 Timer C1 D9 INTI RXD RCLKF QRDIA Input Capture 42 PD2 Input Output I O Strobe I2 Timer C2 D10 DREQO TXF SCLKC QRD2B Header J1 43 PD3 Input Output IA7 TO Strobe 13 Timer C3 DII DREQI1 RXC RXF QRD2A Input Capture 44 PD4 Input Output VO Strobe 14 D12 PWMO TXB TCLKE 45 PDS Input Output IA6 TO Strobe I5 D13 PWMI RXB RCLKE Input Capture OEM User s Manual 33 Table 2 RCM4400W Pinout Configurations continued
66. e mouse modem etc may lead to a message such as could not open serial port when Dynamic C is started Once your installation is complete you will have up to three new icons on your PC desk top One icon is for Dynamic C another opens the documentation menu and the third is for the Rabbit Field Utility a tool used to download precompiled software to a target system If you have purchased any of the optional Dynamic C modules install them after installing Dynamic C The modules may be installed in any order You must install the modules in the same directory where Dynamic C was installed OEM User s Manual 9 2 2 Hardware Connections There are three steps to connecting the Prototyping Board for use with Dynamic C and the sample programs 1 Prepare the Prototyping Board for Development 2 Attach the antenna to the RCM4400W module 3 Attach the RCM4400W module to the Prototyping Board 4 Connect the programming cable between the RCM4400W and the PC 5 Connect the power supply to the Prototyping Board CAUTION Provide ESD protection such as smocks and grounding straps on your A footwear while assembling the RCM4400W module installing it on another board and while making or removing any connections Remember to use ESD protection regardless of whether you are working with the RCM4400W module on the Prototyping Board or in your own OEM application 2 2 1 Step 1 Prepare the Prototyping Board for Developme
67. e RCM4400W RabbitCore module A variety of Wi Fi hardware exists from wireless access points WAPs various Wi Fi access devices with PCI PCMCIA CompactFlash USB and SD MMC interfaces and Wi Fi devices such as Web based cameras and print servers 802 11b can operate in one of two modes in a managed access mode BSS called an infrastructure mode or an unmanaged mode IBSS called the ad hoc mode The 802 11 standard describes the details of how devices access each other in either of these modes 6 1 1 Infrastructure Mode The infrastructure mode requires an access point to manage devices that want to communi cate with each other An access point is identified with a channel and service set identifier SSID that it uses to communicate Typically an access point also acts as a gateway to a wired network either an Ethernet or WAN DSL cable modem Most access points can also act as a DHCP server and provide IP DNS and gateway functions When a device wants to join an access point it will typically scan each channel and look for a desired SSID for the access point An empty string SSID will associate the device with the first SSID that matches its capabilities Once the access point is discovered the device will logically join the access point and announce itself Once joined the device can transmit and receive data packets much like an Ethernet based MAC Being in a joined state is akin to having link status in a 10 100Base
68. e Rabbit 4000 microprocessor when the voltage drops below the voltage necessary for reliable operation The reset occurs between 2 85 V and 3 00 V typically 2 93 V The RCM4400W has a reset output pin 3 on header J1 C 1 4 Onboard Power Supplies The 3 3 V supplied to the RCM4400W via header J1 powers most of the onboard circuits In addition there is a 1 8 V DC linear regulator that provides the core voltage to the Rabbit 4000 microprocessor Other linear regulators supply the additional voltage levels needed by the Wi Fi circuits A DISABLE line from the Rabbit 4000 can be used to disable the Wi Fi linear regulators essentially turning off the Wi Fi circuits The POWERDOWN C sample program in the SAMPLES RCM4400W TCPIP folder demonstrates this functionality Regulated 3 3 VDC IDISABLE 2 80 VDC 2 90 VDC n Wi Fi Figure C 3 RCM4400W Onboard Power Supplies Voltage Power Supply Use 2 90 V DC VDD_PA VDD_VCO 2 80 V DC VDD_XCVR 2 50 V DC FPGA VCCAUX 1 2 VDC FPGA VCCINT OEM User s Manual 113 114 RabbitCore RCM4400W INDEX A digital I O 28 l function calls 47 additional information digInAlert 51 T O buffer sourcing and sinking online documentation 5 timedAlert 51 TIMMS an 91 antenna 88 I O buffer sourcing and sink J extension
69. e program sends pings using the limits you set The country or region you select will automatically set the power and channel require ments to operate the RCM4400W module Rabbit recommends that you check the reg ulations for the country where your system incorporating the RCM4400W will be deployed for any other requirements RabbitCore RCM4400W Before you compile and run this sample program check the TCP IP configuration parameters the IP address and the SSID in the macros which are reproduced below define TCPCONFIG 1 define WIFI_REGION VERBOSE define PING WHO 10 10 6 1 define PRIMARY STATIC IP 10 10 6 170 define WIFI SSID deanap Now compile and run this sample program The define WIFI_REGION VERBOSE macro will display the channel and power limit settings The Dynamic C STDIO win dow will then display a menu that allows you to complete the configuration of the user interface 6 2 4 2 Wi Fi Operation e WIFIPINGYOU C sends out a series of pings to a RabbitCore module on an ad hoc Wi Fi network This sample program uses some predefined macros The first macro specifies the default TCP IP configuration from the Dynamic C Lib TCPIP TCP_CONFIG LIB library define TCPCONFIG 1 Use the next macro unchanged as long as you have only one RCM4400W RabbitCore module Otherwise use this macro unchanged for the first RabbitCore module define NODE 1 Then change the macro to define NODE 2 before you compile and
70. ed Exposure to the absolute maximum rating conditions for extended periods may affect the reliability of the Rabbit 4000 chip Table A 3 outlines the DC characteristics for the Rabbit 4000 at 3 3 V over the recom mended operating temperature range from T 40 C to 85 C VDDjo 3 0 V to 3 6 V Table A 3 3 3 Volt DC Characteristics Symbol Parameter Min Typ Max T O Ring Supply Voltage 3 3 V 3 0 V 3 3 V 3 6 V VDDro T O Ring Supply Voltage 1 8 V 1 65 V 1 8 V 1 90 V High Level Input Voltage Vin VDDyo 3 3 V ZON Low Level Input Voltage Yi VDD o 3 3 V oy High Level Output Voltage Vou VDDyo 3 3 V ZAN Low Level Output Voltage VoL VDD o 3 3 V oey T O Ring Current 29 4912 MHz I 10 3 34 25 C peas I All other I O 8 mA DRIVE except TXD TXDD TXD TXDD 90 RabbitCore RCM4400W A 3 I O Buffer Sourcing and Sinking Limit Unless otherwise specified the Rabbit I O buffers are capable of sourcing and sinking 8 mA of current per pin at full AC switching speed Full AC switching assumes a 29 4 MHz CPU clock with the clock doubler enabled and capacitive loading on address and data lines of less than 70 pF per pin The absolute maximum operating voltage on all I O is 3 3 V 45 A 4 Bus Loading You must pay careful attention to bus loading when designing an interface to the RCM4400W This section provides bus loading information for external devices T
71. eginning of any programs using the auxiliary I O bus The sample programs in the Dynamic C SAMPLES RCM4400Ww folder provide further examples 5 2 2 Serial Communication Drivers Library files included with Dynamic C provide a full range of serial communications sup port The RS232 LIB library provides a set of circular buffer based serial functions The PACKET LIB library provides packet based serial functions where packets can be delimited by the 9th bit by transmission gaps or with user defined special characters Both libraries provide blocking functions which do not return until they are finished transmitting or receiving and nonblocking functions which must be called repeatedly until they are fin ished allowing other functions to be performed between calls For more information see the Dynamic C Function Reference Manual and Rabbit s Technical Note TN213 Rabbit Serial Port Software both included with the online documentation 5 2 3 User Block Certain function calls involve reading and storing calibration constants from to the simulated EEPROM in flash memory located at the top 2K of the reserved user block memory area 3800 39FF This leaves the address range 0 37FF in the user block available for your application These address ranges may change in the future in response to the volatility in the flash memory market in particular sector size The sample program USERBLOCK_INFO C in the Dynamic C SAMPLES USERBLOCK folder ca
72. ells the TCP IP stack what part of the IP address identifies the local network the device lives on The sample programs configure the RCM4400W modules with a default TCPCONFIG macro from the Rabbit4000 LIB TCPIP TCP_CONFIG LIB library This macro allows specific IP address netmask gateway and Wi Fi parameters to be set at compile time Change the network settings to configure your RCM4400W module with your own Ethernet settings only if that is necessary to run the sample programs you will likely need to change some of the Wi Fi settings e Network Parameters These lines contain the IP address netmask nameserver and gateway parameters define PRIMARY STATIC IP 10 10 6 100 define PRIMARY NETMASK 255 255 255 0 define MY NAMESERVER 10 10 6 1 define MY GATEWAY 10 10 6 1 There are similar macros defined for the various Wi Fi settings as explained in Section 6 3 1 The Wi Fi configurations are contained within TCPCONFIG 1 no DHCP and TCPCON FIG 5 with DHCP used primarily with infrastructure mode You will need to define TCPCONFIG 1or define TCPCONFIG 5 at the beginning of your program NOTE TCPCONFIG 0 is not supported for Wi Fi applications There are some other standard configurations for TCPCONFIG Their values are docu mented in the Rabbit4000 LIB TCPIP TCP_CONFIG LIB library More information is available in the Dynamic C TCP IP User s Manual 58 RabbitCore RCM4400W 6 2 3 2 PC Laptop PDA Configur
73. ess and release switches S2 and S3 on the Prototyping Board The data sent between the serial ports will be displayed in the STDIO window OEM User s Manual 23 e IOCONFIG SWITCHECHO C This program demonstrates how to set up Serial Ports E and F which then transmit and then receive an ASCII string when switch S2 or S3 is pressed The echoed serial data are displayed in the Dynamic C STDIO window Note that the I O lines that carry the Serial Port E and F signals are not the Rabbit 4000 defaults The Serial Port E and F I O lines are configured by calling the library function serEFconfig that was generated by the Rabbit 4000 IOCONFIG EXE utility program found in the Dynamic C Utilities folder Note that the RCM4400W_IOCONFIG LIB library generated by IOCONFIG EXE to support this sample program is provided in the Dynamic C SAMPLES RCM4400W SERIAL folder Serial Port E is configured to use Parallel Port D bits PD6 and PD7 These signals are available on the Prototyping Board s Module Extension Header header J2 Serial Port F is configured to use Parallel Port C bits PC2 and PC3 These signals are available on the Prototyping Board s RS 232 connector header J4 Serial Port D is left in its default configuration using Parallel Port C bits PCO and PCI These signals are available on the Prototyping Board s RS 232 connector header J4 Serial Port D transmits and then receives an ASCII string with Serial Port F when switch S3 is pre
74. f the programming cable may be used on header J2 of the RCM4400W with the RCM4400W operating in the Run Mode This allows the program ming port to be used as a regular serial port 4 3 1 Changing Between Program Mode and Run Mode The RCM4400W is automatically in Program Mode when the PROG connector on the programming cable is attached and is automatically in Run Mode when no programming cable is attached When the Rabbit 4000 is reset the operating mode is determined by the status of the SMODE pins When the programming cable s PROG connector is attached the SMODE pins are pulled high placing the Rabbit 4000 in the Program Mode When the programming cable s PROG connector is not attached the SMODE pins are pulled low causing the Rabbit 4000 to operate in the Run Mode RESET RCM4400W when changing mode Press RESET button if using Prototyping Board OR Cycle power off on after removing or attaching programming cable 3 pin power connector a Colored po To PC USB port i Neil RCOM4a 01 RABBIT tn 000000000000000000000000 Figure 10 Switching Between Program Mode and Run Mode OEM User s Manual 41 A program runs in either mode but can only be downloaded and debugged when the RCM4400W
75. gent peripheral device slaved to a master processor Real Time Clock Yes Ten 8 bit timers 6 cascadable from the first Timers one 10 bit timer with 2 match registers and one 16 bit timer with 4 outputs and 8 set reset registers Watchdog Supervisor Yes Pulse Width Modulators 4 channels synchronized PWM with 10 bit counter 4 channels variable phase or synchronized PWM with 16 bit counter Input Capture 2 channel input capture can be used to time input signals from various port pins 86 RabbitCore RCM4400W Table A 1 RCM4400W Specifications continued Parameter RCM4400W Quadrature Decoder 2 channel quadrature decoder accepts inputs from external incremental encoder modules Power pins unloaded 3 3 VDC 5 450 mA 3 3 V while transmitting receiving 80 mA 3 3 V while not transmitting receiving Operating Temperature 30 C to 75 C Humidity 5 to 95 noncondensing One RP SMA antenna connector Connectors One 2 x 25 1 27 mm pitch IDC signal header One 2 x 5 1 27 mm pitch IDC programming header Board Size 1 84 x 2 85 x 0 50 47 mm x 72 mm x 13 mm Wi Fi Antenna Power Output 40 mW 16 dBm Compliance 802 11b 2 4 GHz OEM User s Manual 87 A 1 1 Antenna The RCM4400W Development Kit includes a 2 4 GHz 2 dB dipole antenna whose dimensions are shown in Figure A 3 3 28 83 4 4 40 111
76. gh the Prototyping Board Refer to Chapter 2 Getting Started if you need further information on these steps To run a sample program open it with the File menu then compile and run it by pressing F9 Each sample program has comments that describe the purpose and function of the pro gram Follow the instructions at the beginning of the sample program Complete information on Dynamic C is provided in the Dynamic C User s Manual User s Manual 55 6 2 1 Wi Fi Setup Figure 11 shows how your development setup might look once you re ready to proceed Programming Cable to PC COM1 A Ad Hoc Mode Figure 11 Wi Fi Host Setup 56 RabbitCore RCM4400W 6 2 2 What Else You Will Need Besides what is supplied with the RCM4400W Development Kit you will need a PC with an available USB port to program the RCM4400W module You will need either an access point for an existing Wi Fi network that you are allowed to access and have a PC or note book connected to that network infrastructure mode or you will need at least a PDA or PC with Wi Fi to use the ad hoc mode User s Manual 57 6 2 3 Configuration Information 6 2 3 1 Network Wi Fi Configuration Any device placed on an Ethernet based Internet Protocol IP network must have its own IP address IP addresses are 32 bit numbers that uniquely identify a device Besides the IP address we also need a netmask which is a 32 bit number that t
77. gure Dynamic C at run time before modifying any parameters that require the interface to be down see Section 6 3 2 by calling ifdown IF _WIFIO or ifconfig IF_ WIFIO Then bring the interface back up Finally no radio transmission occurs until you call tep_ tick NULL Instead of executing the above sequence based on sock _init you could use sock __ init or exit 1 as a debugging tool to transmit packets ARP DHCP association and authentication while bringing up the interface and to get the IP address User s Manual 81 6 4 Where Do I Go From Here NOTE If you purchased your RCM4400W through a distributor or through a Rabbit part ner contact the distributor or partner first for technical support If there are any problems at this point e Use the Dynamic C Help menu to get further assistance with Dynamic C e Check the Rabbit Technical Bulletin Board and forums at www rabbit com support bb and at www rabbitcom forums e Use the Technical Support e mail form at www rabbit com support If the sample programs ran fine you are now ready to go on An Introduction to TCP IP and the Dynamic C TCP IP User s Manual provide background and reference information on TCP IP and are available on the CD and on our Web site 82 RabbitCore RCM4400W APPENDIX A RCM4400W SPECIFICATIONS Appendix A provides the specifications for the RCM4400W and describes the conformal coating OEM User s Manual 83 A 1
78. h between debugging at machine code level and source code level by simply opening or closing the disassembly window gt Watch expressions Watch expressions are compiled when defined so complex expressions including function calls may be placed into watch expressions Watch expressions can be updated with or without stopping program execution gt Register window All processor registers and flags are displayed The contents of general registers may be modified in the window by the user D Stack window shows the contents of the top of the stack gt Hex memory dump displays the contents of memory at any address gt STDIO window printf outputs to this window and keyboard input on the host PC can be detected for debugging purposes printf output may also be sent to a serial port or file 46 RabbitCore RCM4400W 5 2 Dynamic C Function Calls 5 2 1 Digital I O The RCM4400W was designed to interface with other systems and so there are no drivers written specifically for the Rabbit 4000 I O The general Dynamic C read and write func tions allow you to customize the parallel I O to meet your specific needs For example use WrPortI PEDDR amp PEDDRShadow 0x00 to set all the Port E bits as inputs or use WrPortI PEDDR amp PEDDRShadow OxFF to set all the Port E bits as outputs When using the auxiliary I O bus on the Rabbit 4000 chip add the line define PORTA AUX IO required to enable auxiliary I O bus to the b
79. h surface mount pad B 4 2 Measuring Current Draw The Prototyping Board has a current measurement feature available at header locations JP1 and JP2 for the 5 V and 3 3 V supplies respectively To measure current you will have to cut the trace on the bottom side of the Prototyping Board corresponding to the power supply or power supplies whose current draw you will be measuring Header loca tions JP1 and JP2 are shown in Figure B 5 Then install a 1 x 2 header strip from the Development Kit on the top side of the Prototyping Board at the header location s whose trace s you cut The header strip s will allow you to use an ammeter across their pins to measure the current drawn from that supply Once you are done measuring the current place a jumper across the header pins to resume normal operation Bottom Side O JP1 JP2 ee T Cut traces CURRENT MEASUREMENT JP1 5 V ACLI JP2 3 3 V Figure B 5 Prototyping Board Current Measurement Option NOTE Once you have cut the trace below header location JP1 or JP2 you must either be using the ammeter or have a jumper in place in order for power to be delivered to the Prototyping Board OEM User s Manual 105 B 4 3 Analog Features The Prototyping Board has typical support circuitry installed to complement the ADS7870 A D converter chip which is available on other RabbitCore modules based on the Rabbit 4000 microproces
80. hentication define WIFI AUTH MODE WIFICONF_ AUTH ALL The following authentication options are available e WIFICONF AUTH OPEN SYS only use open authentication e WIFICONF AUTH SHARED KEY only use shared key authentication useful for WEP only User s Manual 69 e Fragmentation threshold WIFI FRAG THRESH sets the fragmentation threshold Frames or packets that are larger than this threshold are split into multiple fragments This can be useful on busy or noisy networks The value can be between 256 and 2346 The default 0 means no fragmentation define WIFI FRAG THRESH 0 e RTS threshold _WIFI_RTS_THRESH sets the RTS threshold the frame size at which the RTS CTS mechanism is used This is sometimes useful on busy or noisy networks Its range is 1 to 2347 The default 0 means no RTS CTS define WIFI_RTS THRESH 0 Examples are available within Dynamic C Select Function Lookup from the Help menu or press lt ctrl H gt Type TCPCONFIG in the Function Search field and hit lt Enter gt Scroll down to the section on Wi Fi Configuration The Dynamic C TCP IP User s Manual Volume 1 provides additional information about these macros and Wi Fi It is also possible to redefine any of the above parameters dynamically using the wifi_ ioct1 function call Macros for alternative Wi Fi configurations are provided with the wifi ioct1l function call and may be used to ch
81. i i Rara 44 4 523 Serlal Flashi ira ara gaia Le Rai nonni 44 Chapter 5 Software Reference 45 5 1 More About Dynamic Cini TA alii ra 45 5 2 Dynamic G Function Calls seeen irosen a did iaia iii 47 SZ DISTALE A ALA REANO E ARNONE SER 47 5 2 2 Serial Communication DrIVers ene ee eae ar ee E A aE E NATEN OSEE EEEREN 47 5 2 3 User Block riain iaia hail alia nie 47 S2 A SRAM WS6 aaa E E e eh eee 48 5 2 9 WEP Drivers ganz ono ina nia Glee eee etic daria aa 48 9 20 Senmial ElashDrvers ii liana bene ee oes ea EA 48 5 2 7 Prototyping Board Function CallSs ceeesecsessecseceseceeceseeeceeeeeceeesesenseaeecaeesaecaecsaeeneeseees 50 9 2 1 Board Intialization ng 2 nai cto Bch nas al nana i alain 50 POAT APA Alerts fio i hl ace bc elenina SI 5 3 Upgrading Dynamic C le aaa asia 52 5 31 Add On Modules Libia S 52 Chapter 6 Using the Wi Fi Features 53 6 1 Introductonito Wi Fi aaa iaia 53 6 1 1 Infrastriacture Modenie i eie LI AA n 53 0 152 Ad Oe M OAE r hi e aloni Mies eee th See i 54 6 1 3 Additional Information ac i253 ie tia bili oi aa ii n 54 6 2 Running Wi Fi Sample Programs i 55 60 21 WEE SEP ai en LEI o ri 56 6 2 2 What Else You Will Ne d uui aci 57 6 2 5 Configurationi IN ormat Noein i E iano sauvencueviensabentysenteswetersnse gt 58 6 2 3 1 Network Wi Fi Configuration i 58 6 2 3 2 PC Laptop PDA Confisurationi dea aa 59
82. iming diagram RE ee cose cas seks decussate 92 RCM4400W 83 antenna eects 88 dimensions 84 electrical mechanical and environmental 86 relative pin 1 locations 89 spectrum spreader 93 Settings oia in 43 subsystems digital inputs and outputs 28 switching modes 41 T technical support 17 U user block determining size 47 function calls 47 readUserBlock 44 writeUserBlock 44 reserved area for calibration constants 47 WwW Wi Fi additional resources 82 bring interface down 81 bring interface up 81 circuit description 38 function calls ifconfig IF_WIFIO 81 ifdown IF_WIFIO 81 ifup IF_WIFIO 81 sock_init 81 sock_init_or_exit 1 81 tep_tick NULL 81 wifi_ioctl commands 71 WIFI_AUTH 76 WIFI_COUNTRY_GET ates acetates ons iO 75 WIFI_COUNTRY_SET Crane 74 WIFI_FRAG_THRESH Rie 77 WIFI_MODE 75 WIFI_MULTI_ DOMAIN 73 WIFILOWNCHAN 75 WIFI_OWNSSID 75 WIFI_RTS_THRESH 77 WIFI_SCAN 79 WIFI_SCANCB 78 WIFI_SSID 73 WIFI_STATUSGET 79 WIFI_TX_POWER 77 WIFI_TX_RATE 77 WIFI_WEP_FLAG
83. infrastructure network one that uses an access point this is the name of the network as configured on the access point For an ad hoc network this is the name that you want to give the network you created All devices on the ad hoc network must use the same SSID WIFI_MULTI_DOMAIN This command enables or disables your device to be configured by an access point that is capable of supporting multiple domains according to the 802 11d standard When your device is enabled the access point will provide country information to your device to identify the regulatory domain in which it is located and to configure its PHY for opera tion in that regulatory domain NOTE The access point must have the 802 11d option enabled with the country selected according to where your wireless device is deployed User s Manual 73 WIFI_COUNTRY_SET This command sets the channel range and maximum power limit for the country selected The country you select will set the maximum power limit and channel range automatically Rabbit strongly recommends checking the regulations for the country where your wireless devices will be deployed for any specific requirements Any attempt to operate a device outside the allowed channel range or power limits will void your regulatory approval to operate the device in that country The following regions have macros and region numbers defined for convenience Table 5 Worldwide Wi Fi Macros and Region Numbers
84. ion Identification Card Network Adapter and click on the The following network components are installed a 5 95 Dl A I NETGEAR MA401 Wireless PC Card Properties button Depending on which Baoa a alae gs version of Windows your PC is running Fast Infrared Protocol gt IBM ThinkPad Fast Infrared Port you may have to select the Local Area Connection first and then click on the Properties button to bring up the Ether tes eros net interface dialog Then configure Primary Network Logon your interface card for an Auto Negotia Microso Family Logon Ji tion or 10Base T Half Duplex connec i ile and Print Sharing tion on the Advanced tab Eile and Print Sharing r Description TCP IP is the protocol to condito the Intemet and NOTE Your network interface card will VE A dacia likely have a different name User s Manual 59 2 Now select the IP Address tab and check Specify an IP Address or select TCP IP and click on Properties to fill in the fol a va You can get IP settings assigned automatically if your network supports lowin g fields this capability Otherwise you need to ask your network administrator for di the appropriate P settings Internet Protocol TCP IP Properties _2 x General IP Address 10 10 6 101 Obtain an IP address automatically Netmask z 255 255 255 0 Use the following IP address IP address 10
85. ion by clicking on Network Connections then on Local Area Connection Now click on Wireless Network Connection to select the wireless network you will be connecting to Once a sample program is running you will be able to select the network from a list of available networks You will have set your wireless network name with the WIFI_OWNCHANNEL macros for the ad hoc mode as explained in Section 6 2 3 1 Network Wi Fi Configuration 60 RabbitCore RCM4400W Once the PC or notebook is set up we re ready to communicate You can use Telnet or a Web browser such as Internet Explorer which come with most Windows installations to use the network interface and you can use HyperTerminal to view the serial port when these are called for in some of the later sample programs Now we re ready to run the sample programs in the Dynamic C Samples TCPIP WiFi folder The sample programs should run as is in most cases 6 2 4 Wi Fi Sample Programs The sample programs in Section 6 2 4 1 show how to set up the country or region specific attributes but do not show the basic setup of a wireless network The sample programs in Section 6 2 4 2 show the setup and operation of a wireless network the WIFISCAN C sample program is ideal to demonstrate that the RCM4400W has been hooked up correctly and that the Wi Fi setup is correct so that an access point can be found 6 2 4 1 Wi Fi Operating Region Configuration The country or region you select will
86. it as Eee shown in the diagram Once you have compiled and run this program you can test flow con trol by disconnecting the TxD jumper from RxD while the program is running Charac ters will no longer appear in the STDIO window and will display again once TxD is connected back to RxD If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable and reset the sending board so that the module is operating in the Run mode Connect TxC TxD and GND on the sending board to RxC RxD and GND on the other board then with the programming cable attached to the other module run the sample program Once you have compiled and run this program you can test flow control by disconnecting TxD from RxD as before while the program is running Since the J4 header locations on the two Prototyping Boards are connected with wires there are no slip on jumpers at J4 on either Prototyping Board e SWITCHCHAR C This program demonstrates transmitting and then receiving an ASCII string on Serial Ports C and D It also displays the serial data received from both ports in the STDIO window To set up the Prototyping Board you will need to tie TxD and RxC together on the RS 232 header at J4 and you will also tie RxD and RxC_TxC TxC together using the jumpers supplied in the Development Kit as OE shown in the diagram a Once you have compiled and run this program pr
87. lock line usable as a general CMOS I O pin The programming port may also be used as a serial port via the DIAG connector on the programming cable In addition to Serial Port A the Rabbit 4000 startup mode SMODEO SMODE 1 STATUS and reset pins are available on the programming port The two startup mode pins determine what happens after a reset the Rabbit 4000 is either cold booted or the program begins executing at address 0x0000 The status pin is used by Dynamic C to determine whether a Rabbit microprocessor is present The status output has three different programmable functions 1 Itcan be driven low on the first op code fetch cycle 2 It can be driven low during an interrupt acknowledge cycle 3 It can also serve as a general purpose output once a program has been downloaded and is running The reset pin is an external input that is used to reset the Rabbit 4000 Refer to the Rabbit 4000 Microprocessor User s Manual for more information 40 RabbitCore RCM4400W 4 3 Programming Cable The programming cable is used to connect the programming port header J2 of the RCM4400W to a PC serial COM port The programming cable converts the RS 232 volt age levels used by the PC serial port to the CMOS voltage levels used by the Rabbit 4000 When the PROG connector on the programming cable is connected to the RCM4400W programming port programs can be downloaded and debugged over the serial interface The DIAG connector o
88. market where you plan to use the RCM4400W The two versions can be distinguished by the labels on the RF shield as shown below cE Fe ce Fe RCM4400W Standard Release Label EPA Japan Version Label RABBIT 901 0187 RABBIT 904 0188 RabbitCore RCM4400W The RCM4400W series is programmed over a standard PC USB port through a program ming cable supplied with the Development Kit NOTE The RabbitLink cannot be used to program RabbitCore modules based on the Rabbit 4000 microprocessor Appendix A provides detailed specifications for the RCM4400W 1 2 Advantages of the RCM4400W e Fast time to market using a fully engineered ready to run ready to program micro processor core module e Competitive pricing when compared with the alternative of purchasing and assembling individual components e Easy C language program development and debugging e Rabbit Field Utility to download compiled Dynamic C bin files and cloning board options for rapid production loading of programs e Generous memory size allows large programs with tens of thousands of lines of code and substantial data storage e Easily scalable for commercial deployment applications OEM User s Manual 3 1 3 Development and Evaluation Tools 1 3 1 RCM4400W Development Kit The RCM4400W Development Kit contains the hardware essentials you will need to use the RCM4400W module The items in the Development Kit and their use are as follows e RCM4400W mo
89. may also be turned off or set to a stronger setting The spectrum spreader settings may be changed through a simple configuration macro as shown below 1 Select the Defines tab from the Dynamic C Options gt Project Options menu 2 Normal spreading is the default and usually no entry is needed If you need to specify normal spreading add the line ENABLE SPREADER 1 For strong spreading add the line ENABLE SPREADER 2 To disable the spectrum spreader add the line ENABLE SPREADER 0 NOTE The strong spectrum spreading setting is not recommended since it may limit the maximum clock speed or the maximum baud rate It is unlikely that the strong setting will be needed in a real application 3 Click OK to save the macro The spectrum spreader will now remain off whenever you are in the project file where you defined the macro NOTE Refer to the Rabbit 4000 Microprocessor User s Manual for more information on the spectrum spreading setting and the maximum clock speed OEM User s Manual 43 4 5 Memory 4 5 1 SRAM All RCM4400W modules have 512KB of battery backed data SRAM installed at U6 and 512KB of fast SRAM are installed at U7 4 5 2 Flash EPROM All RCM4400W modules also have 512KB of flash EPROM installed at US NOTE Rabbit recommends that any customer applications should not be constrained by the sector size of the flash EPROM since it may be necessary to change the sector size in the future Writing to arbitrary
90. mmand description WIFI_WPA_PSK_HEX This WPA option is only available if the WIFI_USE WPA macro has been defined The command sets a hexadecimal WPA PSK master key The string must be exactly 64 hexadecimal digits using the characters 0 9 and a f or A F This is interpreted as a byte string and parsed into the appropriate 32 byte binary key If your program or TCP configuration defines WIFI_PSK_HEX to a quoted string of 64 hex digits then that string will be used automatically as the PSK master key 76 RabbitCore RCM4400W WIFI_TX_RATE This command macro specifies the maximum transmit rate for the Wi Fi device This rate is reduced as necessary depending on the quality of the wireless connection The options are 1 Mbits s WILFICONF_ RATE 1MBPS 2 Mbits s WIFICONF_ RATE 2MBPS 5 5 Mbits s WIFICONF RATE 5 5MBPS 11 Mbits s WIFICONF RATE 11MBPS WIFICONF RATE ANY to use the highest data rate available WIFI_TX_POWER Sets the transmit power for the Wi Fi device A higher transmit power will result in higher dBm Use the WIFI COUNTRY_GET command to get the power limit setting for the country where the device will be used NOTE Regional regulations may not allow the full range of possible power settings to be used WIFI_FRAG_THRESH Sets the threshold in bytes beyond which a frame must be fragmented when transmitted This can be useful on a very busy or noisy network since frame corruption will be limited to the size of
91. n Note that powering down the Wi Fi portion of the RCM4400W module results in a loss of the network interface unlike an Ethernet connection and so is only suitable for applications such as data logging where only intermittent network connectivity is required The sample program demonstrates the powerdown operation as a simple sequential state machine LED DS2 on the Prototyping Board will be on when the network inter face is up and LED DS3 will be on when the Wi Fi circuit is powered up Before you compile and run this sample program modify the configuration macros including the DOWNTIME and the UPTIME values The interface will be powered up and down for these intervals SMTP cC This program demonstrates using the SMTP library to send an e mail when the S2 and S3 switches on the Prototyping Board are pressed LEDs DS2 and DS3 on the Prototyping Board will light up when e mail is being sent RabbitCore RCM4400W 6 3 Dynamic C Wi Fi Configurations Rabbit has implemented a packet driver for the RCM4400W that functions much like an Ethernet driver for the Dynamic C implementation of the TCP IP protocol stack In addi tion to functioning like an Ethernet packet driver this driver implements a function call to access the functions implemented on the 802 11b interface and to mask channels that are not available in the region where the RCM4400W will be used The Wi Fi interface may be used either at compile time using macro statemen
92. n be used to determine the version of the ID block the size of the ID and user blocks whether or not the ID user blocks are mir rored the total amount of flash memory used by the ID and user blocks and the area of the user block available for your application OEM User s Manual 47 The USERBLOCK CLEAR C sample program shows you how to clear and write the con tents of the user block that you are using in your application the calibration constants in the reserved area and the ID block are protected 5 2 4 SRAM Use The RCM4400W module has a battery backed data SRAM and a program execution SRAM Dynamic C provides the protected keyword to identify variables that are to be placed into the battery backed SRAM The compiler generates code that maintains two copies of each protected variable in the battery backed SRAM The compiler also generates a flag to indicate which copy of the protected variable is valid at the current time This flag is also stored in the battery backed SRAM When a protected variable is updated the inactive copy is modified and is made active only when the update is 100 complete This assures the integrity of the data in case a reset or a power failure occurs during the update process At power on the application program uses the active copy of the variable pointed to by its associated flag The sample code below shows how a protected variable is defined and how its value can be restored main p
93. nd if the FCC identification number is not visible when the module is installed inside another device then the outside of the device into which the module is installed must also display a label referring to the enclosed module This exte rior label can use wording such as the following Contains Transmitter Module FCC ID VCB 540D 144 or Contains FCC ID VCB 540D144 Any similar wording that expresses the same meaning may be used The following cation must be included with documentation for any device incorporating the RCM4400W RabbitCore module Caution Exposure to Radio Frequency Radiation To comply with FCC RF exposure compliance requirements for mobile configurations a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons This device must not be co located or operating in conjunction with any other antenna or transmitter 1 4 2 Industry Canada Labeling peg ost eustie ID 7143A 540D144 This Class B digital apparatus complies with Canadian standard ICES 003 Cet appareil num rique de la classe B est conforme la norme NMB 003 du Canada OEM User s Manual 1 4 3 Japan Labeling e Model Name Use Your Company Model ID Number 003WW071090000 Company Name Use Your Company Name The logo mark diameter must be 5 mm or bigger If the equipment is 100 cm or smaller in volume the minimum size of the log
94. nd install a 1 x 2 header strip from the Develop ment Kit to allow you to use an ammeter across the pins to measure the current drawn from the 5 V supply Similarly you may cut the trace below header JP2 on the bottom side of the Prototyping Board and install a 1 x 2 header strip from the Development Kit to allow you to use an ammeter across the pins to measure the current drawn from the 3 3 V supply e Backup Battery A 2032 lithium ion battery rated at 3 0 V 220 mA h provides battery backup for the RCM4400W data SRAM and real time clock 100 RabbitCore RCM4400W B 2 Mechanical Dimensions and Layout Figure B 2 shows the mechanical dimensions and layout for the Prototyping Board 2 735 gt 69 5 DI Ai e TOTO OO lele 0 dod ee DIO eee C O lee cn BESS NI ie Pe OOOOO00O0 re OCOOOOOOOOO000N0 re OOOOOOOOOO0O0OD re OOOOOOOOOO0OOU re OOOOOOOOOO000O re OOOOOOOOOO0000 Pr DOOOOOOO OOOO OO t re OOOOOOOOOOO00O0 re OCOOOOOOO0O00O0N O re OOOOOOOOOO000 OX O r OOOOOOOOOO000O0 Lee rs OOO OOOOOOO000O0 O 0909000090900000 Ol reeO0O000000000000 x e O0000000000000000 Q O O O 3 10 78 8 3 80 97 reO0O0O00000000000000 Re O0O0O0000000000000 fe O0000000000000000 i OO0OO000000000 Ls ks 00000 00000000 ero 00000 PIZZI a DLE Vre
95. nd meet regulatory requirements on production modules carrying the FCC certification markings These For development use only modules were only sold in 2007 Rabbit also offers add on Dynamic C modules containing the popular uC OS II real time operating system the FAT file system as well as PPP Advanced Encryption Standard AES and other select libraries In addition to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase Visit our Web site at www rabbit com or contact your Rabbit sales represen tative or authorized distributor for further information 1 3 3 Online Documentation The online documentation is installed along with Dynamic C and an icon for the docu mentation menu is placed on the workstation s desktop Double click this icon to reach the menu If the icon is missing use your browser to find and load default htm in the docs folder found in the Dynamic C installation folder The latest versions of all documents are always available for free unregistered download from our Web sites as well OEM User s Manual 5 1 4 Certifications The systems integrator and the end user are ultimately responsible for the channel range and power limits complying with the regulatory requirements of the country where the end device will be used Dynamic C function calls and sample programs illustrate how this is achieved by selecting the c
96. nt Snap in four of the plastic standoffs supplied in the bag of accessory parts from the Devel opment Kit in the holes at the corners as shown in Figure 2 NOTE Pay attention to use the hole that is pointed out towards the bottom left of the Prototyping Board since the hole below it is used for a standoff when mounting the RCM4400W on the Prototyping Board Figure 2 Insert Standoffs 10 RabbitCore RCM4400W 2 2 2 Step 2 Attach the Antenna to the RCM4400W Module Attach the antenna to the antenna SMA connector on the RCM4400W as shown in Figure 3 HR E si ul ue tbLO0HG VEPLL 01 DI tbLC0YS E0A CI 994 a Resa RCM4400W RABBIT CE Figure 3 Attach the Antenna to the RCM4400W Module CAUTION Do not remove the RF shield by the antenna since any attempt to A remove the shield will damage the RF circuits underneath it is removed Any regulatory certification is voided if the RF shield on the RCM4400W module OEM User s Manual 11 2 2 3 Step 3 Attach Module to Prototyping Board Turn the RCM4400W module so that the mounting holes line up with the corresponding holes on the Prototyping Board Insert the metal standoffs as shown in Figure 4 secure them from the bottom using the 4 40 x 3 16 screws and washers then insert the module s header J1 on the bottom side into socket RCMI on the Prototyping Board LU
97. o mark is 3 mm 1 4 4 Europe The marking shall include as a minimum e the name of the manufacturer or his trademark e the type designation e equipment classification see below Receiver Class Risk Assessment of Receiver Performance 1 Highly reliable SRD communication media e g serving human life inherent systems may result in a physical risk to a person 2 Medium reliable SRD communication media e g causing Inconvenience to persons that cannot be overcome by other means 3 Standard reliable SRD communication media e g inconvenience to persons that can simply be overcome by other means NOTE Manufacturers are recommended to declare the classification of their devices in accordance with Table 2 and EN 300 440 2 5 clause 4 2 as relevant In particular where an SRD that may have inherent safety of human life implications manufacturers and users should pay particular attention to the potential for interference from other systems operating in the same or adjacent bands Regulatory Marking The equipment shall be marked where applicable in accordance with CEPT ERC Recom mendation 70 03 or Directive 1999 5 EC whichever is applicable Where this is not appli cable the equipment shall be marked in accordance with the National Regulatory requirements 8 RabbitCore RCM4400W 2 GETTING STARTED This chapter describes the RCM4400W hardware in more detail and explains how to set up an
98. ocessor Rabbit 4000 running at 58 98 MHz Up to 35 general purpose I O lines configurable with up to four alternate functions 3 3 V I O lines with low power modes down to 2 kHz Six CMOS compatible serial ports four ports are configurable as a clocked serial port SPI and two ports are configurable as SDLC HDLC serial ports Alternate I O bus can be configured for 8 data lines and 6 address lines shared with parallel I O lines I O read write 512KB flash memory 512KB data SRAM 512KB fast program execution SRAM UBEC single chip 802 11b transceiver Real time clock Watchdog supervisor Currently there is one RCM4400W production model Table 1 summarizes its main features Table 1 RCM4400W Features Feature RCM4400W Microprocessor Rabbit 4000 at 58 98 MHz Flash Memory 512KB Data SRAM 512KB Fast Program Execution SRAM 512KB 6 shared high speed CMOS compatible ports 6 are configurable as asynchronous serial ports Serial Ports 4 are configurable as clocked serial ports SPI 2 are configurable as SDLC HDLC serial ports 1 asynchronous serial port is used during programming Wi Fi 802 11b standard ISM 2 4 GHz NOTE There is a special version of the RCM4400W RabbitCore module for Japan It is functionally identical to the standard RCM4400W module and uses the same compo nents but has been assembled to meet the Japan regulatory requirements Be sure to order the correct version for the
99. ock period The maxi mum shortening for a pair of clocks combined is shown in the table Rabbit s Technical Note TN227 Interfacing External I O with Rabbit Microprocessor Designs which is included with the online documentation contains suggestions for interfac ing I O devices to the Rabbit 4000 microprocessors OEM User s Manual 93 A 5 Conformal Coating The areas around the 32 kHz real time clock crystal oscillator have had the Dow Corning silicone based 1 2620 conformal coating applied The conformally coated area is shown in Figure A 6 The conformal coating protects these high impedance circuits from the effects of moisture and contaminants over time OED SLAD ED m vrLaors Vver LZ AI DI byLGOvS GdA AI DIA RCM4400W RABBIT Res C135 oy Conformally coated area Figure A 6 RCM4400W Areas Receiving Conformal Coating Any components in the conformally coated area may be replaced using standard soldering procedures for surface mounted components A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contaminants NOTE For more information on conformal coatings refer to Rabbit s Technical Note TN303 Conformal Coatings which is included with the online documentation 94 RabbitCore RCM4400W A 6 Jumper Configurations Figure A 7 shows the header locations
100. on the RCM4400W as shown in Figure 5 Be sure to orient the marked usually red edge of the cable towards pin 1 of the connector Do not use the DIAG connector which is used for a normal serial connection Remove slot cover insert tab into slot Ane 2 snap plug into place 3 pin power connector in Cable Colored edge piaci lo Qa aa Y FS O A 899999099900009900099000 Fai Figure 5 Connect Programming Cable and Power Supply NOTE Never disconnect the programming cable by pulling on the ribbon cable Carefully pull on the connector to remove it from the header Connect the other end of the programming cable to an available USB port on your PC or workstation Your PC should recognize the new USB hardware and the LEDs in the shrink wrapped area of the USB programming cable will flash if you get an error message you will have to install USB drivers Drivers for Windows XP are available in the Dynamic C Drivers Rabbit USB Programming Cable WinxP_ 2K folder double click DPInst exe to install the USB drivers Drivers for other operating systems are available online at www ftdichip com Drivers VCP htm OEM User s Manual 13 2 2 5 Step 5 Connect Power Once all the other
101. on and activity PARERE RAT eepethasrieen athe 40 O onchip encryption RAM how to USE 21 operating region configura TOM siria 61 P pinout Prototyping Board 103 RCM4400W alternate configurations 30 header 28 power supplies PII NV orein 111 battery backup 111 battery backup circuit 112 Program Mode 41 switching modes 41 programming cable PROG connector 41 RCM4400W connections 13 programming port 40 Prototyping Board 98 access to analog inputs 100 adding components 105 dimensions 101 expansion area 99 features 98 99 Jumper configurations 108 jumper locations 108 mounting RCM4400W 12 PINOUE eee 103 power supply 102 prototyping area 104 specifications 102 use of Rabbit 4000 signals 104 R Rabbit 4000 spectrum spreader time delays sa E docs pria sia 93 Rabbit subsystems 29 RCM4400W development use only VETSION n 5 mounting on Prototyping Board 12 real time clock battery backup 112 RP SMA connector 40 Run Mode 41 switching modes 41 S sample
102. on header J2 LN2 buffer filter to JP15 RCM4400W 1 2 Connected 1 2 Connected PB4 to Switch S2 x JP16 PB4 Switch S2 n c PB4 available on header J2 LN3 buffer filter to JP17 RCM4400W 1 2 Connected 1 2 Connected PBS to Switch S3 x JP18 PB5 Switch S3 n c PBS available on header J2 LN4 buffer filter to JP19 RCM4400W 1 2 Connected OEM User s Manual 109 Table B 4 RCM4400W Prototyping Board Jumper Configurations continued Header Description Pins Connected Factory Default LN5 buffer filter to JP20 RCM4400W 1 2 Connected LN6 buffer filter to JP21 RCM4400W 1 2 Connected LN7 buffer filter to JP22 RCM4400W 1 2 Connected 1 2 Tied to analog ground x JP23 LN4 IN LN6_IN 2 3 Tied to VREF 1 2 Tied to analog ground x JP24 LNO_IN LN3_IN 2 3 Tied to VREF JP25 Thermistor Location 1 2 n c NOTE Jumper connections JP3 JP10 JP12 JP14 JP16 JP18 JP23 and JP24 are made using 0 Q surface mounted resistors Jumper connections JP11 JP13 JP15 JP17 and JP19 JP22 are made using 470 Q surface mounted resistors 110 RabbitCore RCM4400W APPENDIX C POWER SUPPLY Appendix C provides information on the current requirements of the RCM4400W and includes some background on the chip select circuit used in power management C 1 Power Supplies The RCM4400W requires a regulated 3 3 V DC 5 power source The RabbitCore design presumes that the voltage regulator is on the u
103. on the Prototyping Board at different rates Once you have compiled and run this program LEDs DS2 and DS3 will flash on off at different rates e FLASHLED2 c demonstrates the use of cofunctions and costatements to flash LEDs DS2 and DS3 on the Prototyping Board at different rates Once you have compiled and run this program LEDs DS2 and DS3 will flash on off at different rates 20 RabbitCore RCM4400W TAMPERDETECTION C demonstrates how to detect an attempt to enter the bootstrap mode When an attempt is detected the battery backed onchip encryption RAM on the Rabbit 4000 is erased This battery backed onchip encryption RAM can be useful to store data such as an AES encryption key from a remote location This sample program shows how to load and read the battery backed onchip encryption RAM and how to enable a visual indicator Once this sample is compiled and running you pressed the F9 key while the sample program is open remove the programming cable and press the reset button on the Prototyping Board to reset the module LEDs DS2 and DS3 will be flashing on and off Now press switch S2 to load the battery backed RAM with the encryption key The LEDs are now on continuously Notice that the LEDs will stay on even when you press the reset button on the Prototyping Board Reconnect the programming cable briefly and unplug it again to simulate an attempt to access the onchip encryption RAM The LEDs will be flashing because the ba
104. ountry or region which sets the channel range and power limits automatically See Section 6 2 4 1 for additional information and sample programs dem onstrating how to configure an end device to meet the regulatory channel range and power limit requirements Only RCM4400W modules bearing the FCC certification are certified for use in Wi Fi enabled end devices and any applications must have been compiled using Dynamic C v 10 21 or later The certification is valid only for RCM4400W modules equipped with the dipole antenna that is included with the modules Changes or modifications to this equip ment not expressly approved by Rabbit may void the user s authority to operate this equip ment In the event that these conditions cannot be met then the FCC certification is no longer considered valid and the FCC ID can not be used on the final product In these circum stances the systems integrator or end user will be responsible for re evaluating the end device including the transmitter and obtaining a separate FCC certification NOTE Any regulatory certification is voided if the RF shield on the RCM4400W module is removed 1 4 1 FCC Part 15 Class B The RCM4400W RabbitCore module has been tested and found to comply with the limits for Class B digital devices pursuant to Part 15 Subpart B of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential environment This equipment genera
105. ptions gt Compiler menu The advantage of working in RAM is to save wear on the flash memory which is limited to about 100 000 write cycles The disadvantage is that the code and data might not both fitin RAM NOTE An application can be compiled directly to the battery backed data SRAM on the RCM4400W module but should be run from the fast SRAM after the serial program ming cable is disconnected Your final code must always be stored in flash memory for reliable operation RCM4400W modules have a fast program execution SRAM that is not battery backed Select Code and BIOS in Flash Run in RAM from the Dynamic C Options gt Project Options gt Compiler menu to store the code in flash and copy it to the fast program execution SRAM at run time to take advantage of the faster clock speed This option optimizes the performance of RCM4400W modules running at 58 98 MHz NOTE Do not depend on the flash memory sector size or type in your program logic The RCM4400W and Dynamic C were designed to accommodate flash devices with various sector sizes in response to the volatility of the flash memory market Developing software with Dynamic C is simple Users can write compile and test C and assembly code without leaving the Dynamic C development environment Debugging occurs while the application runs on the target Alternatively users can compile a program to an image file for later loading Dynamic C runs on PCs under Windows NT and later see R
106. r Upper FiS EEE o O m I III e Ma RXAT ZF AN sinto BOD CON BOR BOD A A HEES GO D GOOD GOD GOOD O 4 Kat 1 E a R21 LI N P25 R23 sa OOOOH Ora Q o i A Fal 22 Bie Vv UOMO VIVISICISICISE OTS Are tei 00000 cee i akin oO Dlo tt 4 270 DOD R280 DONI O C ug Lx 1 0 15 3 8 0 165 3 485 0 15 4 2 88 5 TT 3 8 Figure B 2 Prototyping Board Dimensions NOTE All measurements are in inches followed by millimeters enclosed in parentheses All dimensions have a manufacturing tolerance of 0 01 0 25 mm OEM User s Manual 101 Table B 1 lists the electrical mechanical and environmental specifications for the Proto typing Board Table B 1 Prototyping Board Specifications Parameter Specification Board Size 3 80 x 3 80 x 0 48 97 mm x 97 mm x 12 mm Operating Temperature 0 C to 70 C Humidity 5 to 95 noncondensing Input Voltage 8 V to 24 V DC Maximum Current Draw 800 mA max for 3 3 V supply including user added circuits 1 A total 3 3 V and 5 V combined 1 3 x 2 0 33 mm x 50 mm throughhole 0 1 spacing o ie additional space for SMT components One 2 x 25 header socket 1 27 mm pitch to accept RCM4400W One 1 x 3 IDC header for power s
107. re decoder and input capture Coupled with more than 500 new opcode instructions that help to reduce code size and improve processing speed this equates to a core module that is fast effi cient and the ideal solution for a wide range of wireless embed ded applications The Development Kit has the essentials that you need to design your own wireless microprocessor based system and includes a complete Dynamic C software development system This Devel opment Kit also contains a Prototyping Board that will allow you to evaluate the RCM4400W RabbitCore modules and to prototype circuits that interface to the RCM4400W modules You will also be able to write and test software for these modules In addition to onboard Wi Fi 802 11b functionality the RCM4400W model has a Rabbit 4000 microprocessor operating at 58 98 MHz static RAM flash memory two clocks main oscillator and timekeeping and the circuitry necessary for reset and management of battery backup of the Rabbit 4000 s internal real time clock and the static RAM One 50 pin header brings out the Rabbit 4000 I O bus lines parallel ports and serial ports The RCM4400W series receives its 3 3 V power from the customer supplied mother board on which it is mounted The RCM4400W series can interface with many CMOS compatible digital devices through the motherboard OEM User s Manual 1 1 RCM4400W Features Small size 1 84 x 2 85 x 0 50 47 mm x 72 mm x 13 mm Micropr
108. rom the reset circuitry that can be used to reset other peripheral devices OEM User s Manual 35 4 2 Serial Communication The RCM4400W module does not have any serial driver or receiver chips directly on the board However a serial interface may be incorporated on the board the RCM4400W is mounted on For example the Prototyping Board has an RS 232 transceiver chip 4 2 1 Serial Ports There are six serial ports designated as Serial Ports A B C D E and F All six serial ports can operate in an asynchronous mode up to the baud rate of the system clock divided by 8 An asynchronous port can handle 7 or 8 data bits A 9th bit address scheme where an additional bit is sent to mark the first byte of a message is also supported Serial Port A is normally used as a programming port but may be used either as an asyn chronous or as a clocked serial port once application development has been completed and the RCM4400W is operating in the Run Mode Serial Port B is shared with the serial flash and is set up as a clocked serial port PBO provides the SCLKB output to the serial flash Note that the serial flash is used to support the FPGA chip in the Wi Fi circuit and is not available for customer use Serial Ports C and D can also be operated in the clocked serial mode In this mode a clock line synchronously clocks the data in or out Either of the two communicating devices can supply the clock Note that PD2 and PDO provide the SCLK
109. rotected int statel state2 state3 _sysIsSoftReset restore any protected variables The bbram keyword may also be used instead if there is a need to store a variable in battery backed SRAM without affecting the performance of the application program Data integrity is not assured when a reset or power failure occurs during the update process Additional information on bbram and protected variables is available in the Dynamic C User s Manual 5 2 5 Wi Fi Drivers The Wi Fi drivers are located in the Rabbit4000 LIB TCPIP folder Complete informa tion on the Wi Fi libraries and function calls is provided in Chapter 6 Additional informa tion on TCP IP is provided in the Dynamic C TCP IP User s Manual 5 2 6 Serial Flash Drivers The 1MB serial flash memory on the RCM4400W is used to bootstrap the FPGA for the Wi Fi circuits and was not available for customer use Starting with Dynamic C v 10 54 it is possible to access 800KB of the serial flash for customer use The Dynamic C Rabbit4000 LIB SerialFlash SFLASH LIB and Rabbit4000 LIB SerialFlash SFLASH FAT LIB libraries provide the function calls needed to use the serial flash The FAT file system function calls are in the Dynamic C Rabbit4000 LIB FileSystem FAT CONFIG LIB library 48 RabbitCore RCM4400W Since the RCM4400W uses part of the serial flash to bootstrap its FPGA you must ensure that your application does not try to access the serial flash during the first c
110. rototyping board As a demonstration board it can be used to demonstrate the functionality of the RCM4400W right out of the box without any modifications to either board The Prototyping Board comes with the basic components necessary to demonstrate the operation of the RCM4400W Two LEDs DS2 and DS3 are connected to PB2 and PB3 and two switches S2 and S3 are connected to PB4 and PB5 to demonstrate the interface to the Rabbit 4000 microprocessor Reset switch S1 is the hardware reset for the RCM4400W The Prototyping Board provides the user with RCM4400W connection points brought out conveniently to labeled points at header J2 on the Prototyping Board Although header J2 is unstuffed a 2 x 25 header is included in the bag of parts RS 232 signals Serial Ports C and D are available on header J4 A header strip at J4 allows you to connect a ribbon cable and a ribbon cable to DB9 connector is included with the Development Kit The pinouts for these locations are shown in Figure B 4 Q Z O GND J1 J4 SS TxD RxC RxD TxC RS 232 3 3 V GND GND RST_OUT NORD IIOWR RST_IN VBAT_EXT PAO PA1 PA2 PA3 PA4 PAS PA6 PAT PBO PBI PB3 RCM4400W PB5 Signals 7 PB2 PB4 PB6 PCO PC2 PC4 PC6 PEO PE2 PE4 PE6 PDO LNO PD2 LN2 PD4 LN4 PD6 LN6 PB PC PC3 PC5 PC7 PEI PE3 PSSSIIFIZSSSIISSIZSIIICO a 000000000000000000000000 N PES PE7 PD1 LN1 PD3 LN3 PDS LNS PD7 LN7 VREF
111. run this sample program on the second RCM4400W RabbitCore module The next macros assign an SSID name and a channel number to the Wi Fi network define WIFI SSID rab hoc define WIFI OWNCHANNEL 5 Finally IP addresses are assigned to the RabbitCore modules define IPADDR 1 10 10 8 1 define IPADDR 2 10 10 8 2 As long as you have only one RCM4400W RabbitCore module the Dynamic C STDIO window will display the pings sent out by the module You may set up a Wi Fi enabled laptop with the IP address in IPADDR_2 to get the pings If you have two RCM4400W RabbitCore modules they will ping each other and the Dynamic C STDIO window will display the pings e WIFISCAN C initializes the RCM4400W and scans for other Wi Fi devices that are operating in either the ad hoc mode or through access points in the infrastructure mode No network parameter settings are needed since the RCM4400W does not actually join an 802 11b network This program outputs the results of the scan to the Dynamic C STDIO window User s Manual 63 e WIFISCANASSOCIATE C demostrates how to scan Wi Fi channels for SSIDs using the wifi ioctl function call with WIFI_ SCAN This takes a while to complete so wifi ioctl calls a callback function when it is done The callback function is specified using an wifi _ioctl WIFI_SCANCB function call Before you run this sample program configure the Dynamic C TCP_CONFIG LIB library and your TCPCONFIG macro 1
112. ser board and that the power is made available to the RCM4400W board through header J1 An RCM4400W with no loading at the outputs operating at 58 98 MHz typically draws 80 mA and may draw up to 450 mA while the Wi Fi circuit is transmitting or receiving C 1 1 Battery Backup The RCM4400W does not have a battery but there is provision for a customer supplied battery to back up the data SRAM and keep the internal Rabbit 4000 real time clock running Header J1 shown in Figure C 1 allows access to the external battery This header makes it possible to connect an external 3 V power supply This allows the SRAM and the inter nal Rabbit 4000 real time clock to retain data with the RCM4400W powered down 3 3 VIN 1 External Battery PARTA a AWS VBAT_EXT 7 T Figure C 1 External Battery Connections at Header J1 A battery with a nominal voltage of 3 V and a minimum capacity of 165 mA h is recom mended A lithium battery is strongly recommended because of its nearly constant nominal voltage over most of its life OEM User s Manual 111 The drain on the battery by the RCM4400W is typically 7 5 uA when no other power is supplied If a 165 mA h battery is used the battery can last about 2 5 years 165 mA h 75 pA 2 5 years The actual battery life in your application will depend on the current drawn by components not on the RCM4400W and on the storage capacit
113. some basic I O peripherals RS 232 LEDs and switches as well as a prototyping area for more advanced hardware development For the most basic level of evaluation and development the Prototyping Board can be used without modification As you progress to more sophisticated experimentation and hardware development modifications and additions can be made to the board without modifying the RCM4400W module The Prototyping Board is shown below in Figure B 1 with its main features identified Current Measurement Headers Backup 5 V 3 3 V and Battery GND Buses RCM4400W Module Connector RS 232 Header So SS 59 00000000000 90000909900000 Dax gt Through Hole Prototyping Area sw 0000000000000 RCM4400W Standoff Mounting SMT Prototyping Area 000000000000000 o 0 GEO 0 DIO O80 0 ql Ca I i SMT yee pra User rea Extension Header Switches Figure B 1 Prototyping Board 98 RabbitCore RCM4400W B 1 1 Prototyping Board Features Power Connection A a 3 pin header is provided for connection to the power supply Note that the 3 pin header is symmetrical with both outer pins connected to ground and the center pin connected to the raw V input The cable of the AC adapter provided with the North American version of the De
114. sor but is not installed on the RCM4400W Since the RCM4400W Rabbit Core module does not have the ADS7870 A D converter chip the Prototyping Board will not provide A D converter capability with the RCM4400W RabbitCore module B 4 4 Serial Communication The Prototyping Board allows you to access the serial ports from the RCM4400W module Table B 3 summarizes the configuration options Table B 3 Prototyping Board Serial Port Configurations Serial Port Header Default Use Alternate Use A J2 Programming Port RS 232 B J2 Serial Flash RS 232 C J2 J4 RS 232 D J2 J4 RS 232 E J2 F J2 Serial Ports E and F may be used as serial ports or the corresponding pins at header loca tion J2 may be used as parallel ports B 4 4 1 RS 232 RS 232 serial communication on header J4 on both Prototyping Boards is supported by an RS 232 transceiver installed at U3 This transceiver provides the voltage output slew rate and input voltage immunity required to meet the RS 232 serial communication protocol Basically the chip translates the Rabbit 4000 s signals to RS 232 signal levels Note that the polarity is reversed in an RS 232 circuit so that a 3 3 V output becomes approxi mately 10 V and 0 V is output as 10 V The RS 232 transceiver also provides the proper line loading for reliable communication RS 232 can be used effectively at the RCM4400W module s maximum baud rate for dis t
115. ssed To set up the Prototyping Board you will need to tie TXC and RxD together on the RS 232 header at J4 using the jumpers supplied in the Development Kit you will also sT our Q JORD tie TxE PD6 and RxE PD7 together with a soldered pes 0 PES wire or with a wire jumper if you have soldered in the ui IDC header supplied with the accessory parts in the ind i e GND Development Kit PD7ILN7 VREF Once you have compiled and run this program press and release switches S2 or S3 on the Prototyping Board The data echoed between the serial ports will be displayed in the STDIO window 24 RabbitCore RCM4400W 3 2 2 Real Time Clock If you plan to use the real time clock functionality in your application you will need to set the real time clock Use the SETRTCKB C sample program from the Dynamic C SAMPLES RTCLOCK folder and follow the onscreen prompts The RTC_TEST C sample program in the Dynamic C SAMPLES RTCLOCK folder provides additional examples of how to read and set the real time clock 3 2 3 Use of Serial Flash Dynamic C v 10 54 and later The following sample programs from the SAMPLES RCM4400W Serial Flash folder may be used with the RCM4400W as long as you are using Dynamic C v 10 54 or later e SERIAL FLASHLOG C This program runs a simple Web server and stores a log of hits on the home page of the serial flash server This log can be viewed and cleared from a browser
116. subsystems designed into the RCM4400W Customer specific applications RABBIT CMOS level signals 4000 converter RS 232 RS 485 narm serial communication drivers on motherboard RabbitCore Module Figure 6 RCM4400W Subsystems The 58 98 MHz frequency shown for the RCM4400W is generated using a 29 49 MHz crystal with the Rabbit 4000 clock doubler enabled OEM User s Manual 27 4 1 RCM4400W Digital Inputs and Outputs Figure 7 shows the RCM4400W pinouts for header J1 J1 3 3 V_INC_ GND IRESET_OUTT a IORD NOWR _ 2 2 RESET_IN VBAT_EXT _ 2 a PAO PA1 o PA2 PA3 o o PA4 PAS _ o PAG PAZ o PBO SCLK PB1I o o _ PB2 PB3 o o PB4 PB5 o o PB6 PB7 o a PCO PC1 o o PC2 PC3C o a PC4 SDATA_OUT PC5 SDATA_IN o a PC6 PC7 a a PEO OUT PEIC o o PE2 PE3 0 o PE4 PE5 SMODE0 J o PE6 SMODE1 PE7 STATUST o a PDO PD1C o of PD2 PD3C o 2 0 PD4 PD50 o PD6 PD7 aoa n c n c oo GND These pins are normally n c n c not connected Note These pinouts are as seen on the Bottom Side of the module Figure 7 RCM4400W Pinout Headers J1 is a standard 2 x 25 IDC header with a nominal 1 27 mm pitch 28 RabbitCore RCM4400W Figure 8 shows the use of the Rabbit 4000 microprocessor por
117. tes uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interfer ence to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try and correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help 6 RabbitCore RCM4400W Labeling Requirements FCC 15 19 FCC ID VCB 540D144 This device complies with Part 15 of FCC rules Operation is C subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation The modular transmitter must be equipped with either a permanently affixed label or must be capable of displaying the FCC identification number electronically If using a permanently affixed label the modular transmitter must be labeled with its own FCC identification number a
118. the access point can be used to configure your RCM4400W based system to meet regional regulations The sample program includes pings to indicate that the RCM4400W based system has successfully received country information from your access point The country or region you select will automatically set the power and channel require ments to operate the RCM4400W module Rabbit recommends that you check the reg ulations for the country where your system incorporating the RCM4400W will be deployed for any other requirements Before you compile and run this sample program verify that the access point has the 802 11d option enabled and is set for the correct region or country Check the TCP IP configuration parameters the IP address and the SSID in the macros which are repro duced below define TCPCONFIG 1 define WIFI REGION VERBOSE define PRIMARY STATIC IP 10 10 6 170 define WIFI SSID deanap Now compile and run this sample program The define WIFI_REGION VERBOSE macro will display the channel and power limit settings The Dynamic C STDIO win dow will then display a menu that allows you to complete the configuration of the user interface REGION RUNTIME PING C demonstrates how the region or country can be set at run time to configure your RCM4400W based system to meet regional regulations The sample program also shows how to save and retrieve the region setting from nonvola tile memory Once the region country is set this sampl
119. the absence of a pull up resistor on the receive line will likely lead to line breaks being generated since line breaks are normally generated whenever the receive line is pulled low If you are operating a serial port asynchronously you can inhibit character assembly during breaks by setting bit 1 in the corresponding Serial Port Extended Register to 1 Should you need line breaks you will have to either add a pull up resistor on your motherboard or use a receiver that incorporates the circuits to have the output default to the nonbreak levels The Dynamic C RS232 LIB library requires you to define the macro RS232_ NOCHARASSYINBRK to inhibit break character assembly for all the serial ports define RS232 NOCHARASSYINBRK This macro is already defined so that it is the default behavior for the sample programs in the Dynamic C SAMPLES RCM4400W SERIAL folder OEM User s Manual 37 4 2 2 Wi Fi Figure 9 shows a functional block diagram for the Wi Fi circuits U20 UW2453 XCVR Figure 9 RCM4400W Wi Fi Block Diagram The Wi Fi transmission is controlled by the onboard FPGA chip at U14 The primary functions of this FPGA are to implement the 802 11b baseband Media Access Control MAC functionality and to control the 802 11b integrated UBEC UW2453 transceiver The serial flash programs the FPGA automatically whenever power is applied Once con figured the FPGA performs all of the 802 11b data encoding and decoding radio configu
120. ts in the RCM4400W modules PBO PAO PA7 PB2 PB7 PDO PD7 _ Port C Pone ampe Serial Ports C amp D 7 1777 poy rone Mamee 4000 RES_IN Serial Ports E amp F Misc I O Programming Clock P ort Serial Port A PB1 PC6 STATUS PC7 RES SMODEO SMODE1 RESET_OUT PBO PC4 RxD Slave Port JORR i Wi Fi PC5 TXDD Serial Port B Clock Doubler Backup Battery PE5 and PE6 may be Support used with Wi Fi FPGA Figure 8 Use of Rabbit 4000 Ports The ports on the Rabbit 4000 microprocessor used in the RCM4400W are configurable and so the factory defaults can be reconfigured Table 2 lists the Rabbit 4000 factory defaults and the alternate configurations OEM User s Manual Table 2 RCM4400W Pinout Configurations Pin Pin Name Default Use Alternate Use Notes 1 3 3 V_IN 2 GND Reset output from Reset 3 RES_OUT Reset output Reset input Generator or external reset input 4 NORD Output External I O read strobe 5 NOWR Output External I O write strobe 6 RESET_IN Input Input to Reset Generator 7 VBAT_EXT Battery input Slave port data bus SDO SD7 8 15 PA 0 7 Input Output External I O data bus ID0 ID7 IT SCLKB shared with 16 PBO Input Output External I O Address E serial flash IA6 5 eel Programming port 5 17 PBI Input Output External I O Address p Ep CLKA
121. ts or at run time with the wifi ioct1 function call from the Dynamic C Rabbit4000 LIB TCPIP WIFI WIFI_WLN API LIB library 6 3 1 Configuring Dynamic C at Compile Time Rabbit has made it easy for you to set up the parameter configuration using already defined TCPCONFIG macros from the Dynamic C Rabbit4000 LIB TCPIP TCP_ CONFIG LIB library at the beginning of your program as in the example below define TCPCONFIG 1 There are two TCPCONFIG macros specifically set up for Wi Fi applications with the RCM4400W module TCPCONFIG 0 is not supported for Wi Fi applications TCPCONFIG 1 No DHCP TCPCONFIG 5 DHCP enabled These default IP address netmask nameserver and gateway network parameters are set up for the TCPCONFIG macros define PRIMARY STATIC IP 10 10 6 100 define PRIMARY NETMASK 255 255 255 0 define MY NAMESERVER 10 10 6 1 define MY GATEWAY 10 10 6 1 The use of quotation marks in the examples described in this chapter is important since the absence of quotation marks will be flagged with warning messages when encrypted librar ies such as the WIFI_WLN_API LIB library are used Wi Fi Parameters e Access Point SSID _WIFI_SSID This is the only mandatory parameter Define the _WIFI_SSID macro to a string for the SSID of the access point in the infrastructure BSS mode or the SSID of the ad hoc network in the ad hoc IBSS mode The default is shown below define WIFI SSID rabbitTest
122. ttery backed onchip encryption RAM has been erased Notice that the LEDs will continue flashing even when you press the reset button on the Prototyping Board You may press switch S2 again and repeat the last steps to watch the LEDs e TOGGLESWITCH C demonstrates the use of costatements to detect switch presses using the press and release method of debouncing LEDs DS2 and DS3 on the Proto typing Board are turned on and off when you press switches S2 and S3 S2 and S3 are controlled by PB4 and PBS respectively Once you have loaded and executed these five programs and have an understanding of how Dynamic C and the RCM4400W modules interact you can move on and try the other sample programs or begin building your own OEM User s Manual 21 3 2 1 Serial Communication The following sample programs are found in the SAMPLES RCM4400W SERIAL folder FLOWCONTROL C This program demonstrates how to configure Serial Port D for CTS RTS flow control with serial data coming from Serial Port C TxC at 115 200 bps The serial data received are displayed in the STDIO window To set up the Prototyping Board you will need to tie TxD and RxD together on the RS 232 header at J4 and you will also tie TxC and Rx e RxC together using the jumpers supplied in the Development Kit as ao 94 TxD RxD GND shown in the diagram A repeating triangular pattern should print out in the STDIO window The program will
123. upply connection Connectors One 2 x 5 IDC RS 232 header 0 1 pitch Two unstuffed header locations for analog and RCM4400W signals 25 unstuffed 2 pin header locations for optional configurations B 3 Power Supply The RCM4400W requires a regulated 3 0 V 3 6 V DC power source to operate Depend ing on the amount of current required by the application different regulators can be used to supply this voltage The Prototyping Board has an onboard 5 V switching power regulator from which a 3 3 V linear regulator draws its supply Thus both 5 V and 3 3 V are available on the Prototyping Board The Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2 as shown in Figure B 3 LINEAR POWER REGULATOR 3 3 V SWITCHING POWER REGULATOR Dy Ji 1 Di D2 DCIN JP mom La 37 gt U2 4 by DL4003 C5 lana ce c4 i C2 47 uF 330 uH 330 uF 10 pF 10 uF al LM2575 e a ale d B140 Figure B 3 Prototyping Board Power Supply TIP When you lay out your own power supply circuit place the switching voltage regu lator as far away from the RCM4400W as possible to minimize RF noise and use low noise components such as a toroid coil 102 RabbitCore RCM4400W B 4 Using the Prototyping Board The Prototyping Board is actually both a demonstration board and a p
124. used to configure the various RCM4400W options via jumpers Table A 7 lists the configuration options RCM4400W RCM4400W RABBIT Figure A 7 Location of RCM4400W Configurable Positions Table A 7 RCM4400W Jumper Configurations nu Factory Header Description Pins Connected Default yp PE6 FPGA Chip Select or 1 2 PE6 Not SMODEI Output on J1 pin 38 2 3 SMODE1 stuffed P2 PES FPGA Interrupt Output or 1 2 PES Not SMODEO Output on J1 pin 37 2 3 SMODEO stuffed 1 2 PE7 x PE7 or STATUS Output JP3 on J1 pin 39 2 3 STATUS 1 2 PEO x JP4 Reserved for future use 2 3 A20 NOTE The jumper connections are made using 0 Q surface mounted resistors OEM User s Manual 95 96 RabbitCore RCM4400W APPENDIX B PROTOTYPING BOARD Appendix B describes the features and accessories of the Proto typing Board and explains the use of the Prototyping Board to demonstrate the RCM4400W and to build prototypes of your own circuits The Prototyping Board has power supply connec tions and also provides some basic I O peripherals RS 232 LEDs and switches as well as a prototyping area for more advanced hardware development OEM User s Manual 97 B 1 Introduction The Prototyping Board included in the Development Kit makes it easy to connect an RCM4400W module to a power supply and a PC workstation for development It also pro vides
125. velopment Kit is terminated with a header plug that connects to the 3 pin header in either orientation The header plug leading to bare leads provided for overseas customers can be connected to the 3 pin header in either orientation Users providing their own power supply should ensure that it delivers 8 24 V DC at 8 W The voltage regulators will get warm while in use Regulated Power Supply The raw DC voltage provided at the 3 pin header is routed to a 5 V switching voltage regulator then to a separate 3 3 V linear regulator The regulators provide stable power to the RCM4400W module and the Prototyping Board Power LED The power LED lights whenever power is connected to the Prototyping Board Reset Switch A momentary contact normally open switch is connected directly to the RCM4400W s RESET_IN pin Pressing the switch forces a hardware reset of the system I O Switches and LEDs Two momentary contact normally open switches are con nected to the PB4 and PBS pins of the RCM4400W module and may be read as inputs by sample applications Two LEDs are connected to the PB2 and PB3 pins of the RCM4400W module and may be driven as output indicators by sample applications Prototyping Area A generous prototyping area has been provided for the installation of through hole components 3 3 V 5 V and Ground buses run around the edge of this area Several areas for surface mount devices are also available Note that there are SMT
126. will need to define at least one WEP key see below e WIFICONF WEP TKIP use TKIP or WPA encryption You will need to define a pass phrase or a key for TKIP encryption as well as define the WIFI_USE WPA macro see below e The following four encryption keys are provided If WEP encryption is enabled at least one key should be specified do not use the defaults You will have to modify these keys according to the encryption keys in effect for the Wi Fi network you wish to access A key is specified as either 5 or 13 comma separated byte values define WIFI KEYO 0x01 0x23 0x45 0x67 0x89 Oxab Oxcd Oxef 0x01 0x23 0x45 0x67 0x89 define WIFI KEYl 0x01 0x23 0x45 0x67 0x89 Oxab Oxcd Oxef 0x01 0x23 0x45 0x67 0x89 define WIFI KEY2 0x01 0x23 0x45 0x67 0x89 Oxab Oxcd Oxef 0x01 0x23 0x45 0x67 0x89 define WIFI KEY3 0x01 0x23 0x45 0x67 0x89 Oxab Oxcd Oxef 0x01 0x23 0x45 0x67 0x89 e Select encryption key WIFI_USEKEY indicates which WIFI_KEYn key to use 68 RabbitCore RCM4400W The default shown below indicates that key 0 defined by WIFI_KEYO will be used define WIFI USEKEY 0 e Use WPA encryption The following macro must also be used with WPA encryption define WIFI_USE WPA When using WPA encryption WIFI_WEP_ FLAG must be defined as WIFICONF_WEP_ TKIP and you must define a WPA key using WIFI_PSK_PASSPHRASE or WIFI_ PSK_HEX e Set WPA passphrase WIFI _ PSK PASS
127. y of the battery The RCM4400W does not drain the battery while it is powered up normally Cycle the main power off on after you install a backup battery for the first time and when ever you replace the battery This step will minimize the current drawn by the real time clock oscillator circuit from the backup battery should the RCM4400W experience a loss of main power NOTE Remember to cycle the main power off on any time the RCM4400W is removed from the Prototyping Board or motherboard since that is where the backup battery would be located Rabbit s Technical Note TN235 External 32 768 kHz Oscillator Circuits provides addi tional information about the current draw by the real time clock oscillator circuit C 1 2 Battery Backup Circuit Figure C 2 shows the battery backup circuit External Battery D1 VBAT EXT L gt _ot _ VW 100 kQ Figure C 2 RCM4400W Backup Battery Circuit The battery backup circuit serves three purposes e It reduces the battery voltage to the SRAM and to the real time clock thereby limiting the current consumed by the real time clock and lengthening the battery life e It ensures that current can flow only out of the battery to prevent charging the battery e A voltage VOSC is supplied to U13 which keeps the 32 768 kHz oscillator working when the voltage begins to drop 112 RabbitCore RCM4400W C 1 3 Reset Generator The RCM4400W uses a reset generator to reset th

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