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Coyote (BL2500) - Digi International

1. Figure 11 Coyote Digital Input Protected Range User s Manual 21 3 3 2 Digital Outputs The Coyote has eight digital outputs OUTO OUT7 each of which can sink up to 200 mA Figure 12 shows a wiring diagram for using the digital outputs in a sinking configuration SINKING OUTPUTS gt x MES KH OUT gt es External Power Supply GND S as Figure 12 Coyote Digital Outputs K is an externally supplied voltage of 3 3 40 V DC and should be capable of delivering all the load currents Although a connection to a K supply is not absolutely required with sinking outputs it is highly recommended to protect against current spikes when driving inductive loads such as relays and solenoids Connect the positive K supply to pin 1 of friction lock connector terminal J10 and the negative side of the supply to pin 2 of friction lock connector terminal J10 A friction lock connector is recommended to connect this supply because the K inputs are not protected against reverse polarity and serious damage to the Coyote may result if you connect this supply backwards 22 Coyote BL2500 3 4 Analog Features 3 4 1 A D Converter The A D converter shown in Figure 13 compares the DAO voltage to ADO the voltage presented to the A D converter DAO therefore cannot be used for the D A converter when the A D converter is being used DAO too low 14 10 KQ DAO
2. 31 power from BL2500 78 rn sp close 57 RS 232 description 28 physical mounting 69 rn sp disable 58 RS 485 network 29 pinout rn sp enable 58 RS 485 termination and bias BT 9500 headers usns 18 rn sp Info 57 T SI TOTS iicet 30 Ethernet port 0 32 reset serial ports power management 75 hardware sess 12 Ethernet port 32 power supply 75 reset generator 77 SEUD E 10 battery backup esses 16 RS 485 network 29 power supply connections 10 chip select circuit 77 termination and bias resistors programming cable connec connec ons onc Aaa a 10 30 TONS teret 13 switching voltage regulator 75 Run Mode 33 software eee eee eM 4 VRAM switch oooi 71 s downloading RabbitNet librar Program Mode 33 NER 40 programming sample programs u s 41 libraries esses 44 flash vs RAM 37 A D converter inputs BL2500 en m programming cable 3 ADOC sete 42 PACKET LIB 49 programming port 31 ADCALIB C 42 RN CFG BL25 LIB T programming cafe 3 COF ANAIN C 42 RNET LIB e 88 connections 1111112 10 DAQAD Cie eerta 42 Ee Se PROG connector 33 DNLOADCALIB C 43 TC
3. The RS 232 and RS 485 serial ports 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 The CMOS serial channel and the two RS 422 SPI ports can also be oper ated 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 for the clocked CMOS channel As the master the Coyote must supply the clock for the SPI ports The Coyote boards use all six serial ports Serial Port A is used in the clocked serial mode to provide cold boot download and emulation functions Serial Port B is multiplexed between the two SPI RS 422 RabbitNet ports SPI_1 and SPI_2 Clocked Serial Port C is available as a basic CMOS voltage level serial port Serial Port D is used for RS 485 com munication and Serial Ports E and F are used for RS 232 communication User s Manual 27 3 5 1 RS 232 The Coyote RS 232 serial communication is supported by an RS 232 transceiver 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 3000 s CMOS TTL signals to RS 232 signal levels Note that the polarity is reversed in an RS 232 circuit so that a 3 3 V
4. Coyote BL2500 C Programmable Single Board Computer with Ethernet User s Manual 019 0120 M BL2500 User s Manual Part Number 019 0120 Printed in U S A 2002 2010 Digi International Inc All rights reserved Digi International reserves the right to make changes and improvements to its products without providing notice Trademarks Rabbit and Dynamic C are registered trademarks of Digi International Inc Rabbit 3000 RabbitCore and RabbitNet are trademarks of Digi International Inc The latest revision of this manual is available on the Rabbit Web site www rabbit com Digi International Inc www rabbit com Coyote BL2500 TABLE OF CONTENTS Chapter 1 Introduction 1 ll E 1 LE OEM Versions eeh 2 1 2 Development and Evaluation Tools 3 1 2 1 Development Kit Em 3 EE A 1 2 3 Connectivity To0 s iieri eene tese etre itp etai ee Foto tete EEGEN der 4 LZ DIN Rail MOUntIng cereo eere etre ett eno ter EENS ec 5 1 3 RabbitNet Peripheral Cards scvssccscsscs csisesessvesascosnatssacvanvesscaseotecsscastecestedeansenesancesenseuscuesdeaudeoautecsavenseussees 6 I Ae Mee EE 7 14 1 Design Guidelines prenses ete tenente eere det P Pre reete iet tors oct eee ist ie eere EER EERE SEENE 8 1 4 2 Interfacing the BL2500 to Other Devices sss enne enne 8 Chapter 2 Getting Started 9 2 1 Preparing the BL2500 for Development 9 2 2 BL2500 Connections eene eret rnn nne nttnaas sten enses esiste nasse sense tes
5. fewer digital inputs only 16 digital I O with 8 protected and filtered digital inputs and 8 digital outputs sinking up to 200 mA at up to 36 V DC no header J12 no backup battery no RabbitNet hardware no RS 422 multiplexer chips no RabbitNet RJ 45 jacks no RabbitNet power connectors headers J7 and J8 2 Coyote BL2500 1 2 Development and Evaluation Tools 1 2 1 Development Kit A Development Kit contains the hardware essentials you will need to use your BL2500 OEM2500 The items in the Development Kit and their use are as follows e BL2500 single board computer Getting Started instructions Dynamic C CD ROM with complete product documentation on disk Programming cable used to connect your PC serial port to the BL2500 e 12 V AC adapter used to power the BL2500 An AC adapter is supplied with develop ment kits sold in the North American market If you are using your own power supply it must provide 8 to 40 V DC Demonstration Board with pushbutton switches and LEDs The Demonstration Board can be hooked up to the BL2500 to demonstrate the I O Parts to build your own wire assemblies wire twenty five 0 1 crimp terminals ten 0 156 crimp terminals 1 x 2 1 x 4 and 1 x 10 friction lock connectors Nylon machine screws to serve as legs for the BL2500 board during development Rabbit 3000 Processor Easy Reference poster Registration card Programming c AC Adapter Da Cable
6. 10 Coyote BL2500 2 When all other connections have been made you can connect power to the BL2500 Connect the AC adapter to header J2 on the BL2500 as shown in Figure 5 Match the friction lock tab on the friction lock connector to the back of header J2 on the BL2500 as shown The friction lock connector will only fit one way Development Kits sold outside North America include a friction lock friction lock con nector that may be connected to header J2 on the BL2500 Connect the leads from your power supply to the friction lock connector to preserve the polarity indicated in Figure 5 The power supply should deliver 8 V 40 V DC at 500 mA NS NIS DOA GNOV TVG OVC GNOV OOV AE C p n FENCE ES n m o o O o o o o o UMS lt S X lau Ooooom 00000 JP3 SES IPT Sms lo ooooooom didi E m SS zi i Ei or Q o ooooooog sios me dE D n O OoOOOOOO8 E Kn EI RasRa7 GND e Z RS485 TERMINATION RESISTORS Figure 5 Power Supply Connections User s Manual 11 3 Apply power Plug in the AC adapter CAUTION Unplug the power supply whi
7. e A D converter 8 channels of programmable gain 12 bit A D conversion configurable as current mea surement and differential input pairs 2 5 V reference voltage is available on the con nector The following connectors are used Signal 0 1 friction lock connectors Power 0 156 friction lock connectors RabbitNet RJ 45 connector e D A converter 8 channels of 0 10 V 12 bit D A conversion The following connectors are used Signal 0 1 friction lock connectors Power 0 156 friction lock connectors RabbitNet RJ 45 connector Display Keypad interface allows you to connect your own keypad with up to 64 keys and one character liquid crystal display from 1 x 8 to 4 x 40 characters with or without backlight using standard 1 x 160r2x 8 connectors The following connectors are used Signal 0 1 headers or sockets Power 0 156 friction lock connectors RabbitNet RJ 45 connector e Relay card 6 relays rated at 250 V AC 1200 V A or 100 V DC up to 240 W The following connectors are used Relay contacts screw terminal connectors Power 0 156 friction lock connectors RabbitNet RJ 45 connector Visit our Web site for up to date information about additional cards and features as they become available 86 Coyote BL2500 D 2 Physical Implementation There are four signaling functions associated with a RabbitNet connection From the mas ter s point of view the transmit function carries information and
8. 0 25 1024 RETURN VALUE 0 if successful SEE ALSO pwmOutConfig pwm init Sets the voltage of an analog output channel by using the previously set calibration constants to calculate the cor rect data values Call pwmOutConfig and pwm init before using this function An exception error will occur if these functions were not been called previously PARAMETERS channel is the output channel 0 or 1 to write 0 for DAO 1 for DA voltage is the voltage desired on the output channel 0 3 3 V RETURN VALUE None SEE ALSO pwmOut pwmOutConfig pwm init 54 Coyote BL2500 Calibrates the response of the D A converter channel as a linear function using the two conversion points provided Values are calculated and placed into global table dacCalibsS for analog inputs to be stored later into simulated EEPROM using the function anaOutEEWr Each channel will have a linear constant and a voltage offset PARAMETERS channel is the output channel 0 or 1 0 for DAO 1 for DAT valuel is the first D A converter value 0 1023 usually a value of 310 that corresponds to 1 0 V volts1 is the voltage corresponding to the first D A converter value 0 3 3 V or Vief value2 is the second D A converter value 0 1023 usually a value of 930 that corresponds to 3 0 V volts2 is the voltage corresponding to the second D A converter value 0 3 3 V or Vief RETURN VALUE 0 if successful if not able to make calibration constants SEE A
9. Table A 1 lists the electrical mechanical and environmental specifications for the Coyote Feature BL2500 BL2510 Microprocessor Rabbit 30009 at 29 4 MHz Ethernet Port 10 100 compatible with 10Base T interface Flash Memory 256K standard 512K 2 x 256K option SRAM 128K standard 512K option Backup Battery 3 V lithium coin type 1000 mA h supports RTC and SRAM LEDs 4 user programmable menus augu coc or Digital Outputs 8 sink up to 200 mA each 36 V DC max Analog Inputs One 10 bit resolution 8 bit accuracy input range 0 1 3 1 V 10 samples s Two 9 bit PWM 0 1 3 1 V DC Analog Outputs worst case 17 ms settling time to within 5 mV of final value built in RC settling time constant 2 5 ms Serial Ports 6 serial ports one RS 485 e two RS 232 or one RS 232 with CTS RTS e one clocked serial port multiplexed to two RS 422 SPI master ports one CMOS level asynchronous or clocked serial port one serial port dedicated for programming debug Serial Rate Max asynchronous rate CLK 8 Max synchronous rate CLK 2 Real Time Clock Yes Ten 8 bit timers 6 cascadable 3 are reserved for internal peripherals iners one 10 bit timer with 2 match registers Watchdog Supervisor Yes s 8 40 V DC RabbitNet peripheral cards are limited to 32 V DC max ower 1 W typ with no load 0 8 W typ with no load Temperature 40 C
10. 2 North American p kits only Nylon Machine Screws Nuts DPE Toc i hq ass I Demo Board Ess Wire Friction Lock Connectors amp Crimp Terminals BL2500 Demo Board Getting Started Instructions Figure 1 BL2500 OEM2500 Development Kit User s Manual 3 1 2 2 Software The Coyote is programmed using version 7 33 or later of Rabbit s Dynamic C A compatible version is included on the Development Kit CD ROM Web based technical support is included at no extra charge Dynamic C v 9 60 includes the popular uC OS II real time operating system point to point protocol PPP FAT file system RabbitWeb and other select libraries that were previously sold as individual Dynamic C modules Rabbit also offers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Layer SSL and a specific Advanced Encryption Standard AES library In addi tion to the Web based technical support included at no extra charge a one year telephone based technical support subscription is also available for purchase Visit our Web site at www rabbit com for further information and complete documentation or contact your Rabbit sales representative or authorized distributor 1 2 3 Connectivity Tools Rabbit also has available additional tools and parts to allow you to make your own wiring assemblies in quantity to interface with the friction lock connectors on the Coyote e Connectivity Kit Part No 101 0581 Six
11. 32 A D converter pwmOutVolts 54 handling EMI and noise 32 calibration constants Demonstration Board PINOUE 1 gegen 32 board serial number 43 hookup instructions 81 exclusion zone emt 68 function calls digital I O sample programs analu eene 50 81 F anaInCalib 51 jumper configurations 81 82 analnEERd 52 33 Piin 1 analnEEWT sssssessss11ee 52 W 3 ice MD I V It 51 DII UTE lifetime write cycles EECH 37 analnVolts Development Kit Bee cof analn 50 crimp terminals 3 BEE Se 36 analog inputs See A D converter Dynamic C software 3 flash banik lt el SEN 36 analog outputs See D A convert friction lock connectors 3 ER ds f Pee ee CREDE 3 friction lock connectors S9 UWAIO nemmen E CN 19 B digital I O SMODEO eee 31 H battery connections 76 SMODEL 31 board initialization digital inputs 21 headers function calls 45 dimensions Demonstration Board brdlnit o s 45 BL2500 acsi 66 81 82 83 board serial number 43 DIN rail mounting 5 H2 nn 81 82 83 components 2 0 eee eeeeeeee 5 I C Dynamic C 4 38 DEE 7 add on modules 39 IP addresses c cscccsseseesees 62 Geen COM port ssesee 14 how to set sssseseeeee 61 design guideli
12. Before proceeding you will need to have the following items If you don t have an Ethernet connection you will need to install a 10Base T Ethernet card available from your favorite computer supplier in your PC Two RJ 45 straight through Ethernet cables and a hub or an RJ 45 crossover Ethernet cable The Ethernet cables and Ethernet hub are available from Rabbit in a TCP IP tool kit More information is available at www rabbit com 1 Connect the AC adapter and the programming cable as shown in Chapter 2 Getting Started 2 Ethernet Connections If you do not have access to an Ethernet network use a crossover Ethernet cable to con nect the Coyote to a PC that at least has a 10Base T Ethernet card If you have an Ethernet connection use a straight through Ethernet cable to establish an Ethernet connection to the Coyote from an Ethernet hub These connections are shown in Figure 20 User s PC Ethernet cables crossover N To additional cable Hub T elements Direct Connection network of 2 computers Direct Connection Using a Hub Figure 20 Ethernet Connections User s Manual 59 3 Apply Power Plug in the AC adapter The Coyote is now ready to be used NOTE A hardware RESET is accomplished by unplugging the AC adapter then plug ging it back in or by momentarily grounding
13. LED on off control PARAMETERS led is the LED to control 0 LED DSI 1 LED DS2 2 LED DS3 3 LED DS4 value is used to control whether the LED is on or off 0 OFF 1 ON RETURN VALUE None 48 Coyote BL2500 4 4 4 Serial Communication 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 delim ited 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 transmit ting or receiving and nonblocking functions which must be called repeatedly until they are finished For more information see the Dynamic C Function Reference Manual and Technical Note 213 Rabbit Serial Port Software Use the following function calls with the Coyote Enables the RS485 transmitter Transmitted data get echo ed back into the receive data buffer These echo ed data could be used to know when to disable the transmitter by using one of the following methods Byte mode disable the transmitter after the same byte that is transmitted is detected in the receive data buffer Block data mode disable the transmitter after the same number of bytes transmitted is detected in the receive data buffer RETURN VALUE None SEE ALSO ser4
14. brdInit was not called first PARAMETERS bank is 0 for the bank of digital output channels 0 7 value is an 8 bit output value where each bit corresponds to one channel OUTO is the least significant bit 0 RETURN VALUE None EXAMPLE To send out odd channels high void digBankOut 0 Oxaa SEE ALSO digOut digBankIn 46 Coyote BL2500 Reads the state of an input channel INOO IN 15 A run time error will occur for the following conditions 1 channel out of range 2 brdInit was not executed before executing digIn PARAMETER channel is the input channel number 0 15 RETURN VALUE The logic state of the input 0 or 1 SEE ALSO digOut digBankIn Reads the state of a block of designated digital input channels One bank consists of INO INOT and the other bank consists of INO8 IN15 This call is faster than reading the individual channels but does not read the states simultaneously States are read in succession from IN15 INOS or from IN07 INOO A run time error will occur for the following conditions 1 bank is out of range 2 brdInit was not called first PARAMETER bank is 0 for the bank of digital inputs INOO INOT 1 for the bank of digital inputs INOS IN15 RETURN VALUE An input value in the lower byte where each bit corresponds to one channel INOO and INOS are in the bit 0 place EXAMPLE To read inputs 8 to 15 int digBankIn 1 SEE ALSO digIn digBankOut User s Manual 47 4 4 3 LEDs
15. cC This program reads and displays the voltage on channel ADO and its equiva lent value to the STDIO window e ADCCALIB C This program demonstrates how to recalibrate one single ended A D converter channel using two known voltages to generate constants that are then rewritten into the user block data area COF_ANAIN C This program demonstrates the use of the analog input driver as a cofunction Connect DAI to ADO to provide an input voltage When the program runs it will read the input voltage ten times while another costate is executed concurrently The values will be printed out at the end of the program DA2AD C This program allows the user to input a voltage in the Dynamic C STDIO window for DAT to output The user needs to connect DAT to ADO The program will display the voltage read in the STDIO window 4 2 5 D A Converter Outputs The following sample program is found in the DAC subdirectory in SAMPLES BL2500 e DAC C Demonstrates pulse width modulation as an analog output voltage by display ing the voltage entered and measuring the voltage output e DACCALIB C Demonstrates how to recalibrate one single ended analog output chan nel using two known voltages to generate constants for that channel that are then rewrit ten into the user block data area e PWM C Demonstrates pulse width modulation as an analog output 42 Coyote BL2500 4 2 6 Using System Information from the RabbitCore Module Calibration
16. change in voltage after five time constants or 12 5 ms Six time constants 15 ms will allow settling to within 99 75 or to within about 8 mV for a 3 3 V change in voltage Seven time con stants 17 5 ms will allow settling to within 99 91 or to within about 3 mV for a 3 3 V change in voltage An LM324 op amp which can comfortably source 10 mA throughout the D A converter range drives the D A converter output If the output voltage is above 1 V the D A con verter can comfortably sink 10 mA Below 1 V the D A converter can only sink a maxi mum of 100 uA To summarize DAO and DAI are factory calibrated with the calibration constants stored in flash memory DAO and DAI can be programmed with a resolution of 3 mV and a peak to peak ripple of 6 mV over the range from 0 1 to 3 1 V The settling time to within 3 mV is 17 5 ms 26 Coyote BL2500 3 5 Serial Communication The Coyote has two RS 232 serial ports which can be configured as one RS 232 serial channel with RTS CTS or as two RS 232 3 wire channels The Coyote also has one RS 485 serial channel one clocked CMOS serial channel and two SPI serial ports with RS 422 There is also a CMOS serial channel that serves as the programming debug port Table 5 Coyote Serial Port Configuration Serial Port Use Header A Programming Port J3 RabbitCore module B RabbitNet SPI RS 422 J4 J5 C Clocked CMOS Jo D RS 485 J9 E RS 232 J6 F RS 232 J6
17. effects of moisture and contaminants NOTE For more information on conformal coatings refer to Technical Note 303 Conformal Coatings 70 Coyote BL2500 A 3 Jumper Configurations Figure A 5 shows the header and jumper locations used to configure the various Coyote options R21R20R19 1 SI C4 E SO Eu pen GND Figure A 5 Location of Coyote Configurable Positions RabbitCore module is not shown Table A 2 lists the configuration options 0 Q surface mount resistors are used for all the positions except JP10 and J8 which use standard pluggable jumpers Table A 2 Coyote Jumper Configurations Description Pins Connected oe R58 Pulled up to 3 3 V x DOSE R56 Pulled down R55 Pulled up to K R20 Termination resistor x RS 485 Bias and Termination ee SE Bias resistors x User s Manual 71 AA Use of Rabbit 3000 Parallel Ports Figure A 6 shows the Rabbit 3000 parallel ports PCO PC2 PC4 PC1 PC3 PC5 PG2 PG6 PGO PG1 PG3 PG5 PG7 PC6 PB1 PC7 RES 4 Ethernet signals PBO PB4 pp PB1 PB3 PAO PA7 PD4 PD5 Port B v o D Ethernet Port GC PE1 Serial Ports B amp D RABBIT PE3
18. second A D converter value 0 3 3 V RETURN VALUE 0 if successful if not able to make calibration constants SEE ALSO analn anaInEERd anaInEEWr User s Manual 51 Reads the calibration constants gain and offset for an input based on its designated channel code position into global table _adcCalibS Use the sample program USERBLOCK_INFO C in SAMPLES USERBLOCK to get the addresses reserved for the calibration data constants and the addresses available for use in your program NOTE This function cannot be run in RAM PARAMETERS channel is 0 for channel ADO RETURN VALUE 0 if successful if invalid address or range SEE ALSO anaInEEWr anaInCalib Writes the calibration constants gain and offset for an input based on its designated channel code position into global table adcCalibS Use the sample program USERBLOCK_INFO C in SAMPLES USERBLOCK to get the addresses reserved for the calibration data constants and the addresses available for use in your program NOTE This function cannot be run in RAM PARAMETER channel is 0 for channel ADO RETURN VALUE 0 if successful if invalid address or range SEE ALSO anaInEERd anaInCalib 52 Coyote BL2500 4 4 6 Analog Outputs This function from the R3000 LIB library in Lib Rabbit3000 sets the base frequency for the PWM pulses and enables the PWM driver on all four channels The base frequency is the frequency without pulse spreading Pulse spread
19. shows how to connect the Demonstration Board to the Coyote C 1 Assemble Wire Harness Before you can connect the Demonstration Board to the Coyote to run the sample pro grams based on the Demonstration Board you will need to assemble a wiring harness using the friction lock connectors and crimp terminals supplied with the BL2500 OEM2500 Development Kit In addition you will need e Wire 22 to 30 AWG 0 33 mm to 0 049 mm for the 0 1 crimp terminals 22 to 26 AWG 0 33 mm to 0 13 mm for the 0 156 crimp terminals e Wire cutters and wire insulation stripper Crimp tool pliers may be used but a crimp tool provides a better crimp with a stronger force Rabbit sells a crimp tool and a Connectivity Kit that contains additional friction lock con nectors and crimp terminals Table 3 in Chapter 3 provides information on specific friction lock connectors and crimp terminals to be used with the various headers on the BL2500 Contact your authorized Rabbit distributor or your sales representative for more information User s Manual 79 Follow these steps to build your wire harness 1 Prepare a few lengths of wire about 30 cm 12 long The wires should have different colors of insulation to facilitate identifying the connections 2 Trim about 2 3 mm 0 1 of insulation from your wire 3 Position the wire in the crimp terminal as shown in Figure C 1 Crimp D Crimp wire insulation e Figure C 1 Crimp Wi
20. specification leave the 681 2 bias resistors in place on the master Coyote and leave the 220 O termina tion resistors in place on the Coyote at each end of the network 3 2 GNO NIS DDA EN LYA OVA ANSV DON ET D lo 00000008 C i IC ai hs 13Nu88v R21 681 0 R20 O Oooooooom bias 485 E i termination 2200 oooom ooo009O lo ooooooom o ooooooom R21 R20 R19 Figure 16 RS 485 Termination and Bias Resistors 30 Coyote BL2500 3 5 3 Programming Port The Coyote s serial programming port is accessed via the 10 pin programming header on the RabbitCore module or over an Ethernet connection via the RabbitLink EG2110 The programming port uses the Rabbit 3000 s Serial Port A for communication Dynamic C uses the programming port to download and debug programs The programming port is also used for the following operations e Cold boot the Rabbit 3000 on the RabbitCore module after a reset e Remotely download and debug a program over an Ethernet connection using the RabbitLink EG2110 e Fast copy designated portions of flash memory from one Rabbit based board the master to another the slave using the Rabbit Cloning Board Alter
21. to 70 C Humidity 5 to 95 noncondensing Friction lock connectors five polarized 9 position terminals with 0 1 pitch Connectors ES P two 2 position power terminals with 0 156 pitch two 4 position terminals with 0 156 pitch d ar 3 94 x 3 94 x 1 16 3 94 x 3 94 x 0 80 Unit Size 100 mm x 100 mm x 29 mm 100 mm x 100 mm x 20 mm not present on standard OEM versions T only 8 protected inputs on standard OEM versions User s Manual 67 A 1 1 Exclusion Zone It is recommended that you allow for an exclusion zone of 0 25 6 mm around the Coyote in all directions when the Coyote is incorporated into an assembly that includes other components An exclusion zone of 0 12 3 mm is recommended below the Coyote Figure A 2 shows this exclusion zone Exclusion Zone Figure A 2 Coyote Exclusion Zone 68 Coyote BL2500 A 1 2 Physical Mounting Figure A 3 shows position information to assist with interfacing other boards with the Coyote E 3 250 N 82 5 p 3 225 j 81 9 1 650 N 41 9 p 1 380 J 35 0 0710 18 0 D A UN ge e2 gS ow aa 1 8a e Ni RR Ro qi 0 400 10 2 Figure A 3 User Board Footprint for Coyote User s Manual A 2 Conformal Co
22. transmit enable on the communication line Using this scheme a strict master slave relationship must exist between devices to insure that no two devices attempt to drive the bus simultaneously Serial Port D is configured in software for RS 485 as follows define ser485open serDopen define ser485close serDclose define ser485wrFlush serDwrFlush define ser485rdFlush serDrdFlush define ser485putc serDputc define ser485getc serDgetc define DINBUFSIZE 15 define DOUTBUFSIZE 15 ifndef _485BAUD define _485BAUD 115200 endif The configuration shown above is based on circular buffers RS 485 configuration may also be done using functions from the PACKET LIB library The Coyote can be used in an RS 485 multidrop network spanning up to 1200 m 4000 ft and there can be as many as 32 attached devices Connect the 485 to 485 and 485 to 485 using single twisted pair wires as shown in Figure 15 Note that a common ground is recommended Figure 15 Coyote Multidrop Network User s Manual 29 The Coyote comes with a 220 Q termination resistor and two 681 Q bias resistors installed and enabled The load these bias and termination resistors present to the RS 485 transceiver limits the number of Coyotes in a multidrop network to one master and nine slaves unless the bias and termination resistors are removed When using more than 10 Coyotes in a multidrop network or when you need the full common mode immunity per the RS 485
23. value is out of range SEE ALSO anaIn 50 Coyote BL2500 Reads the voltage of a single ended analog input channel using D A channel DAO for comparison to find a match to the input voltage on channel ADO This is done using a 10 step successive approximation binary search which nominally takes 86 ms Call pwmOutConfig and pwm init before using this function An exception error will occur if these functions were not been called previously NOTE DAO should not be used when ADO is in use PARAMETER channel is 0 for channel ADO RETURN VALUE A voltage value between 0 and 3 1 V for the analog input channel ADOVERFLOW is returned defined macro 4096 on overflow or if the return value is out of range SEE ALSO analn pwmOutConfig pwm init Calibrates the response of the A D converter channel as a linear function using the two conversion points provided Values are calculated and placed into global table adcCalibS for analog inputs to be stored later into simulated EEPROM using the function anaInEEWr Each channel will have a linear constant and a voltage offset PARAMETERS channel is 0 for channel ADO valuel is the first A D converter value 0 1023 usually a value of 310 that corresponds to 1 0 V volts1 is the voltage corresponding to the first A D converter value 0 3 3 V value2 is the second A D converter value 0 1023 usually a value of 930 that corresponds to 3 0 V volts2 is the voltage corresponding to the
24. 0 and the nameserver and gateway to10 10 6 1 If you would like to change the default values for example to use an IP address of 10 1 1 2 for the Coyote board and 10 1 1 1 for your PC you can edit the values in the section that directly follows the General Configuration comment in the TCP CONFIG LIB library You will find this library in the LIB TCPIP directory 3 You can create a CUSTOM CONFIG LIB library and use a TCPCONFIG value greater than 100 Instructions for doing this are at the beginning of the TCP_CONFIG LIB library in the LIB TCPIP directory There are some other standard configurations for TCPCONFIG that let you select differ ent features such as DHCP Their values are documented at the top of the TCP CONFIG LIB library in the LIB TCPIP directory More information is available in the Dynamic C TCP IP User s Manual IP Addresses Before Dynamic C 7 30 Most of the sample programs use macros to define the IP address assigned to the board and the IP address of the gateway if there is a gateway Instead of the TCPCONFIG macro you will see a MY IP ADDRESS macro and other macros tdefine MY IP ADDRESS 10 10 6 170 tdefine MY NETMASK 255 255 255 0 define MY GATEWAY 10 10 6 1 define MY NAMESERVER 10 10 6 1 In order to do a direct connection the following IP addresses can be used for the Coyote define MY IP ADDRESS 10 1 1 2 tdefine MY NETMASK 255 255 255 0 define MY GATEWAY 10 10 6 1 d
25. 0 TCPIP demonstrates a basic con troller running a Web page Two LEDs are created on the Web page and two buttons on the Demonstration Board then toggle them Users can change the status of the lights from the Web browser The LEDs on the Demonstration Board match the ones 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 http 10 10 6 100 Otherwise use the TCP IP settings you entered in the TCP_CONFIG LIB library The program PINGLED C SAMPLES BL2500 TCPIP demonstrates ICMP by ping ing a remote host It will flash LEDs DS1 and DS2 on the Demonstration Board when a ping is sent and received 5 3 Where Do I Go From Here NOTE If you purchased your Coyote through a distributor or Rabbit partner contact the distributor or partner first for technical support If there are any problems at this point Use the Dynamic C Help menu to get further assistance with Dynamic C Check the Rabbit Technical Bulletin Board and forums at www rabbit com support bb and at www rabbit com forums Use the Technical Support e mail form at www rabbit com support questionSubmit shtml If the sample programs ran fine you are now ready to go on If the sample programs ran fine you are now ready to go on Additional sample programs are described in the Dynamic C TCP IP User s Manual R
26. 1 x 10 friction lock connectors 0 1 pitch with sixty 0 1 crimp terminals and two 1 x 4 friction lock connectors 0 156 pitch and two 1 x 2 friction lock connectors 0 156 pitch with fifteen 0 156 crimp termi nals Each kit contains sufficient parts to interface with one Coyote board some parts may be left over e Crimp tool Part No 998 0013 to secure wire in crimp terminals Table 3 in Chapter 3 provides information on specific friction lock connectors and crimp terminals to be used with the various headers on the BL2500 Contact your authorized Rabbit distributor or your sales representative for more information 4 Coyote BL2500 1 2 4 DIN Rail Mounting The Coyote may be mounted in 100 mm DIN rail trays as shown in Figure 2 BL2500 Modular PC Board Trays Figure 2 Mounting Coyote in DIN Rail Trays DIN rail trays are typically mounted on DIN rails with feet Table 2 lists Phoenix Contact part numbers for the DIN rail trays rails and feet The tray side elements are used to keep the Coyote in place once it is inserted in a DIN rail tray and the feet are used to mount the plastic tray on a DIN rail Table 2 Phoenix Contact DIN Rail Mounting Components DIN Rail Mounting Phoenix Contact Phoenix Contact Component Part Description Part Number Trays UM 100 PROFIL cm 1959874 Tray Side Elements UM 108 SE 29 59 476 Foot Elements UM 108 FE 29 59 463 Length of D
27. 17 4 us For a 50 duty cycle half of the period will be high 8 7 us at 3 3 V and half will be low 8 7 us at 0 V Thus a 29 4 MHz Coyote has t 8 7 us User s Manual 25 Based on the standard capacitor discharge formula this means that the maximum voltage change will be 8 7 us 2 5 ms 1 65 Vx 1 e 5 73 mV This is a ripple of approximately 6 mV peak to peak Table 4 lists typical uncalibrated DAO or DAT voltages measured for various duty cycle values with a load larger than 1 MQ Table 4 Typical Uncalibrated DAO or DA1 Voltages for Various Duty Cycles iS od SE Programmed Count 0 0 086 1 50 1 628 512 100 3 244 1023 The full D A converter voltage range of 0 3 3 V cannot be realized because of the voltage tolerances associated with the voltage regulator the Rabbit 3000 PWM output and the op amp rail The circuit can achieve an actual voltage range of 0 1 3 3 V It is important to remember that the DAO or DA1 output voltage will not be realized instan taneously after programming in a value There is a settling time because of the RC time constant 24 9 KQ x 100 nF which is 2 5 ms For example the voltage at any given time is V Vp Vp Vpa e RO where V is the voltage at time t Vp is the programmed voltage Vp is the last DAO or DAI output voltage from the D A converter and RC is the time constant 2 5 ms The settling will be within 99 326 or within about 22 mV for a 3 3 V
28. 74 Coyote BL2500 APPENDIX B POWER SUPPLY Appendix B describes the power circuitry provided on the Coyote B 1 Power Supplies Power is supplied to the Coyote via the friction lock connector terminal at J2 The Coyote has an onboard 5 V switching power regulator from which a 43 3 V linear regulator draws its supply Thus both 5 V and 43 3 V are available The Coyote is protected against reverse polarity by a diode at D1 as shown in Figure B 1 LINEAR POWER DCIN SWITCHING POWER REGULATOR 5v REGULATOR 55 22 pi LM1117 E on NDS 4 a uto B z U3 G 1N5819 C1 a 47 uF 340 UF 10 UF LM2575 ale a gege Figure B 1 Coyote Power Supply The input voltage range is from 8 V to 40 V DC There is provision on the printed circuit board for a transorb to be installed at TVS1 in parallel with C1 to provide suppression for positive noise pulses above 51 V This part is only needed when the Coyote will be used in industrial environments where a clean source of power cannot be guaranteed and is not part of the normal factory build User s Manual 75 B 2 Batteries and External Battery Connections The SRAM and the real time clock have battery backup Power to the SRAM and the real time clock VRAM on the Coyote s RabbitCore module is provided by two different sources depending on whether the main part of the Coyote is p
29. 800 bps after the program compiles User s Manual 37 Dynamic C has a number of standard features e Full feature source and or assembly level debugger no in circuit emulator required 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 PC SPI GPS encryption file system gt LCD display and keypad drivers Powerful language extensions for cooperative or preemptive multitasking Loader utility program to load binary images into Rabbit targets in the absence of Dynamic C 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 Switch 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 comp
30. 85Rx serXopen Disables the RS 485 transmitter This puts the Coyote in listen mode which allows it to receive data from the RS 485 interface RETURN VALUE None SEE ALSO ser485Tx serXopen User s Manual 49 4 4 5 Analog Inputs Uses D A converter channel DAO to search through the full voltage range for a match to the input voltage on channel ADO This is done using a 10 step successive approximation binary search which nominally takes 86 ms Call pwmOutConfig and pwm init before using this function An exception error will occur if these functions were not been called previously NOTE DAO should not be used when ADO is in use PARAMETER channel is 0 for channel ADO RETURN VALUE An integer value between 0 and 1023 that corresponds to a voltage between 0 0 and 3 3 V on the analog input channel if the return value is out of range SEE ALSO cof analIn anaInVolts This function is the cofunction version of the analog input for analog input channel ADO This version will yield on each step approximation in a costate and will take 10 steps to complete the A D conversion The function will also process costates while waiting for each approximation to settle NOTE All the restrictions for anaIn apply to cof anaIn PARAMETERS channel is 0 for channel ADO RETURN VALUE An integer value between 0 and 1023 that corresponds to a voltage between 0 0 and 3 3 V on the analog input channel if the return
31. A digital signal that varies with time is fed from PF6 or PF7 The resolution of the DAO or DAI output depends on the smallest increment of time to change the on off time the time between 3 3 V and 0 V The Coyote uses the Rabbit 3000 s Port F control registers to clock out the signal at a timer timeout The dedi cated PWM hardware has 10 bits of resolution and so that the voltage can be varied in 1 1024 increments The resolution is thus about 3 mV 3 3 V 1024 R6 and R13 are present solely to balance the op amp input current bias R4 and R15 help to achieve a voltage close to ground for a 096 duty cycle A design constraint dictates how fast the PWM hardware must run The hardware filter has a resistor capacitor filter that averages the 0 V and 3 3 V values Its effect is to smooth out the digital pulse train It cannot be perfect and so there will be some ripple in the output voltage The maximum signal decay between pulses will occur when DA1 is set to 1 65 V This means the pulse train will have a 5096 duty cycle The maximum signal decay will be ac 1 65 Vx 1 e where RC 2 5 ms and t is the pulse on or off time not the length of the total cycle The PWM hardware is driven at the Rabbit 3000 frequency divided by 2 The frequency achievable with a 29 4 MHz clock is 29 4 MHz 2 1024 14 3 kHz Since the Rabbit 3000 PWM spreader enhances the frequency fourfold the effective frequency becomes 57 4 kHz This is a period of 1 f
32. IN rail tray in cm NOTE Other major suppliers besides Phoenix Contact also offer DIN rail mounting hardware Note that the width of the plastic tray should be 100 mm 3 95 since that is the width of the Coyote 108 mm plastic trays may be used with spacers User s Manual 5 1 3 RabbitNet Peripheral Cards RabbitNet is an SPI serial protocol that uses a robust RS 422 differential signalling interface twisted pair differential signaling to run at a fast 1 Megabit per second serial rate The Coyote has two RabbitNet ports each of which can support one peripheral card Distances between a master processor unit and peripheral cards can be up to 10 m or 33 ft The following low cost peripheral cards are currently available Digital I O A D converter D A converter Relay card Display Keypad interface Appendix D provides additional information on RabbitNet peripheral cards and the Rab bitNet protocol Visit our Web site for up to date information about additional add ons and features as they become available Coyote BL2500 1 4 CE Compliance Equipment is generally divided into two classes CLASS A CLASS B Digital equipment meant for light industrial use Digital equipment meant for home use Less restrictive emissions requirement 22 Eye More restrictive emissions requirement less than 40 dB un V m at 10 m 40 dB relative to 1 pV m or 300 u V m SEET These limits apply over the range of 30 230
33. Implementation 5 3 etie aet b ehe tance caben tee Reges tete ee ETER ROERO aoas 87 D 2 1 Control and Routing ene estt RH RUP RHET CORRER e PEERS HERE RS 87 D3 Function Calls odere e E dE EU RE TEE 88 D 3 1 Status Byte aie eate ORE RORIS RIO DO Po ere ipte 94 Index 95 Schematics 99 User s Manual Coyote BL2500 1 INTRODUCTION The Coyote single board computer gives OEM designers extremely low cost embedded control for high volume applica tions Two standard models one with Ethernet one without feature the Rabbit 3000 microprocessor running at 29 4 MHz with standard 256K flash and 128K SRAM These compact boards are rich with the I O including one A D input and two D A outputs designers need for embedded control and monitor ing applications and the Coyote s compact board size of 3 95 x 3 95 100 x 100 mm is easily mountable in standard 100 mm DIN rail trays Customized BL2500 models can be manufactured in volume in OEM versions to user specified configurations Pin compatible RabbitCore modules allow multiple configurations of the Coyote with Ethernet and memory options 1 1 Features e Rabbit 30009 microprocessor operating at 29 4 MHz option for 44 2 MHz with 10 100Base T Ethernet interface 128K SRAM and 256K flash memory standard optional 512K SRAM 512K flash e 24 digital I O 9 protected and filtered digital inputs 7 high speed protected but unfil tered digital inputs and 8 digital out
34. LSO pwmOut anaOutEERd anaOutEEWr Reads the calibration constants gain and offset for an output based on its designated channel code position into global table _adcCalibS Use the sample program USERBLOCK INFO Cin SAMPLES USERBLOCK to get the addresses reserved for the calibration data constants and the addresses available for use in your program NOTE This function cannot be run in RAM PARAMETERS channel is the output channel 0 or 1 0 for DAO 1 for DAT RETURN VALUE 0 if successful if invalid address or range SEE ALSO anaOutEEWr anaOutCalib User s Manual 55 Writes the calibration constants gain and offset for an output based on its designated channel code position into global table _adcCalibS Use the sample program USERBLOCK_INFO C in SAMPLES USERBLOCK to get the addresses reserved for the calibration data constants and the addresses available for use in your program NOTE This function cannot be run in RAM PARAMETER channel is the output channel 0 or 1 0 for DAO 1 for DAT RETURN VALUE 0 if successful if invalid address or range SEE ALSO anaOutEERd anaOutCalib 56 Coyote BL2500 4 4 7 RabbitNet Port The function calls described in this section are used to configure the BL2500 for use with RabbitNet peripheral cards The user s manual for the specific peripheral card you are using contains additional function calls related to the RabbitNet protocol and the individ ual peripheral ca
35. MHz The limits are 7 dB higher for frequen cies above 230 MHz Although the test range goes to 1 GHz the emissions from Rabbit based systems at frequencies above 300 MHz are generally well below background noise levels The BL2500 single board computer has been tested and was found to be in conformity with the following applicable immunity and emission standards The BL2510 and OEM single board computers are also CE qualified as they are sub versions of the BL2500 single board com puter Boards that are CE compliant have the CE mark NOTE Earlier versions of the BL2500 that do not have the CE mark are not CE compliant Immunity The BL2500 series of single board computers meets the following EN55024 1998 immu nity standards e EN61000 4 3 Radiated Immunity e EN61000 4 4 EFT e EN61000 4 6 Conducted Immunity Additional shielding or filtering may be required for a heavy industrial environment Emissions The BL2500 series of single board computers meets the following emission standards e EN55022 1998 Class B FCC Part 15 Class B Your results may vary depending on your application so additional shielding or filtering may be needed to maintain the Class B emission qualification User s Manual 7 1 4 1 Design Guidelines Note the following requirements for incorporating the BL2500 series of single board computers into your application to comply with CE requirements General The power supply provided with the To
36. PE7 3000 PF6 PF7 Port F Serial Ports E amp F PFO PF5 Real Time Clock Watchdog 11 Timers Slave Port Clock Doubler Programming PGO PG1 PG4 PG5 RES_IN NORD RESET IOWR STATUS SMODEO SMODE1 Serial Port A Serial Ports Di 9 33 3833 Ethernet Misc I O o Backup Battery Support v a v o ch al Figure A 6 Coyote Rabbit Based Subsystems Table A 3 lists the Rabbit 3000 parallel ports and their use in the Coyote Table A 3 Use of Rabbit 3000 Parallel Ports Port UO Signal Initial State PAO Output OUTO Low PAI Output OUTI Low PA2 Output OUT2 Low PA3 Output OUT3 Low PA4 Output RS 485 Transmit Enable Low disables transmit PAS Output SPI Select EE PA6 Output LED DS4 High disabled PA7 Output LED DS3 High disabled PBO Output CLKB SPI High PBI Input Programming Port Clock High PB2 Input ADO Low Comparator Driven by comparator PB3 Input ADO High Comparator Driven by comparator 72 Coyote BL2500 Table A 3 Use of Rabbit 3000 Parallel Ports continued Port UO Signal Initial State PB4 Output OUT6 Low PB5 Output OUT7 Low PB6 Output LED DS1 High disabled PB7 Output LED DS2 High disabled PCO Output TXD RS 485 Inactive high Serial Port D PCI Input RXD RS 485 Inactive high PC2 O
37. PIP ees 44 switching between Program UPLOADCALIB C 43 RabbitNet port 37 Mode and Run Mode 33 CONTROLLED C 41 ee a programming port 31 D A converter samp le ee 2 DACO cunas 42 specifications R DACCALIB C 42 Een l Se imensions Rabbit 3000 BALE LE s electrical ss 67 parallel ports 72 digital I O lusi 68 RabbitNet sss 6 DIGIN C scie AT BE a s UAE 67 Ethernet cables to connect pe peii e d M KEEN ripheral cards 85 86 FLASHLEDS C 41 Ee 8 69 ee cds how to set IP address 61 P DEN ad CH 69 93 PONG cce 15 e EEN m device 8 Teal time clock e De rn echo 89 RTC TEST C eee 43 t e a MON een 94 HE LIP HAM MM 9j SETRTCKB C 43 S x US byte ae Tanen Se SE d ue al communication subsystems eene pn _hitwd cce celer 92 e XT ED DU ue ipeo 88 SIMPLE3WIRE C Ko pe WER 90 SIMPLE485MASTER C 42 TCP IP connections 59 W PERE Ease tis th oeuf 91 SIMPLEASSSLAVE C 42 10Base T Ethernet card 59 m Tisi ME 93 SWITCHCHARC 42 additional resources 64 P ene 91 TGP IP 4 5 eun 61 81 83 Ethernet hub 59 EE 90 PINGME C 63 SIEDS e 59 general description 85 E uides 64 U peripheral cards 86 TOGGLESWITCHLC e A D converter 86 user b
38. X D RABBITNET D 1 General RabbitNet Description RabbitNet is a high speed synchronous protocol developed by Rabbit to connect periph eral cards to a master and to allow them to communicate with each other D 1 1 RabbitNet Connections All RabbitNet connections are made point to point A RabbitNet master port can only be connected directly to a peripheral card and the number of peripheral cards is limited by the number of available RabbitNet ports on the master SLAVE puso Za N Straight through Ethernet cable bue Rabbit 30009 Microprocessor MASTER Crossover Ethernet cable MASTER pes Es zu Straight through Ethernet cable Figure D 1 Connecting Peripheral Cards to a Master User s Manual 85 Use a straight through Ethernet cable to connect the master to slave peripheral cards unless you are using a device such as the OP7200 that could be used either as a master or a slave In this case you would use a crossover cable to connect an OP7200 that is being used as a slave Distances between a master unit and peripheral cards can be up to 10 m or 33 ft D 1 2 RabbitNet Peripheral Cards e Digital I O 24 inputs 16 push pull outputs 4 channels of 10 bit A D conversion with ranges of 0 to 10 V 0 to 1 V and 0 25 to 0 25 V The following connectors are used Signal 0 1 friction lock connectors Power 0 156 friction lock connectors RabbitNet RJ 45 connector
39. a ee Eeri riere 10 2 2 1 Tard Ware E GE 12 2 3 Instalins Dynamic e 13 24 Staring Dynamic CN H 14 2I PONG C su ene nnne ee e 15 2 6 Where Do I Go From Here ccccccceccsssccececssssceececessseeececesesaeececeseaaeseececesaeseceeeeesseceecesaeaeesenenseeeess 15 2 7 Using the Coyote In High Vibration Environments eese ener enne enne 16 Chapter 3 Subsystems 17 3 1 Coyote uii c m Em 18 Se LK Beleg geess 19 32 Indi tor EE 20 ES DC EE 20 3 3 Digital VO EE 21 33 1 Digital E ER 21 SEN Digital OUtPUtS ciccone ireren irtonainen E EEE EEEE EEEE EE EEEE E E sc 22 921 e Ee 23 SML RAR EE 23 342 WORCESTER EE 24 3 5 Serial Communication eene enne entere ne nnne rennes sn ern nr een esent ne enne e nene en rennen 27 Bel NDUAUACE 28 Fos OP WI E 29 3 3 3 Programming Port vi EE EEN EE R 31 3 544 RabbitNet Ports irem eere ise rec Ee ee En Ue edd e SE eet ss 31 3 0 5 Bthernet POtt 1 terere Ee ENEE EE Pere IRR ROR e RR PES 32 3 6 Serial Programming Cables srep neseni ronse EEEn iee E EEEa epe eee EXE ER ee Pee Do Pre ES epe OES 33 3 6 1 Changing Between Program Mode and Run Mode 33 3 7 Other Hardwate csi coe hes ete ee pe b bebe c aee ree obe iE e et ec ede sebo an 34 3 7 1 Clock Do bl r WEM 34 3 7 2 Spectrum Spreader lt 0 icit tit ee Re SERE HER SURE ETETA R cs venues c
40. above steps until you locate the active COM port You should receive a Bios compiled successfully message once this step is completed successfully 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 Locate the Serial Options dialog in the Dynamic C Options gt Communications menu Select a slower Max download baud rate 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 Locate the Serial Options dialog in the Dynamic C Options gt Communications menu Choose a lower debug baud rate 14 Coyote BL2500 2 5 PONG C You are now ready to test your set up by running a sample program Find the file PONG C which is in the Dynamic C SAMPLES folder To run the program open it with the File menu if it is not still open compile it using the Compile menu and then run it by selecting Run in the Run menu The STDIO window will open on the PC and will display a small square bouncing around in a box This program shows that the CPU is working The sample program described in Section 5 2 3 Run the PINGME C Demo
41. ard is connected to a master PARAMETER pna is the physical node address indicated as a byte 7 6 2 bit binary representation of the port number on the master 5 4 3 Level 1 router downstream port 2 1 0 Level 2 router downstream port RETURN VALUE Pointer to device information 1 indicates that the peripheral card either cannot be identified or is not connected to the master SEE ALSO rn find 88 Coyote BL2500 Locates the first active device that matches the search criteria PARAMETER srch is the search criteria structure rn search unsigned int flags status flags see MATCH macros below unsigned int ports port bitmask char productid product id char productrev product rev char coderev code rev long serialnum serial number Use a maximum of 3 macros for the search criteria RN MATCH PORT match port bitmask RN MATCH PNA match physical node address RN MATCH HANDLE match instance reg 3 RN MATCH PRDID match id version reg 1 RN MATCH PRDREV match product revision RN MATCH CODEREV match code revision RN MATCH SN match serial number For example rn search newdev newdev flags RN MATCH PORT RN MATCH SN newdev ports 0x03 search ports 0 and 1 newdev serialnum E3446CO1rI handle rn find amp newdev RETURN VALUE Returns the handle of the first device matching the criteria O indicates no such devices were found SEE ALSO rn device The pe
42. ating The areas around the crystal oscillator and the battery backup circuit on the Coyote s Rab bitCore module have had the Dow Corning silicone based 1 2620 conformal coating applied The conformally coated areas are shown in Figure A 4 The conformal coating protects these high impedance circuits from the effects of moisture and contaminants over time and helps to maintain the accuracy of the real time clock Tq GND NIS 29A OROY TVG Ova NOV OV AE E d rni il li Le s asnusave Dei KE J6 pe re ia ps E Gs Boe lO OOOOOOOR Ua SN E E A b e a S m be N E lm e Conformally coated ez s area e l H o 9 B o T o e M Oo Lj o E o 2 m mpi e es ae R1 o ooooooog b ooooooom e z RS485 TERMINATION RESISTORS Figure A 4 Coyote s RabbitCore Module 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
43. attaching programming cable Figure 19 Coyote Program Mode and Run Mode Setup A program runs in either mode but can only be downloaded and debugged when the Coyote is in the Program Mode Refer to the Rabbit 3000 Microprocessor User s Manual for more information on the pro gramming port and the programming cable User s Manual 33 3 7 Other Hardware 3 7 1 Clock Doubler The Coyote takes advantage of the Rabbit 3000 microprocessor s internal clock doubler A built in clock doubler allows half frequency crystals to be used to reduce radiated emissions The 29 4 MHz frequency specified for the Coyote is generated using a 14 7456 MHz crystal The clock doubler will not work for crystals with a frequency above 26 7264 MHz The clock doubler may be disabled if 29 4 MHz clock speeds are not required Disabling the Rabbit 3000 microprocessor s internal clock doubler will reduce power consumption and further reduce radiated emissions The clock doubler is disabled with a simple config uration macro as shown below 1 Select the Defines tab from the Dynamic C Options gt Project Options menu 2 Add the line CLOCK_DOUBLED 0 to always disable the clock doubler The clock doubler is enabled by default and usually no entry is needed If you need to specify that the clock doubler is always enabled add the line CLOCK_DOUBLED 1 to always enable the clock doubler 3 Click OK to save the macro The clock doubler w
44. ck device information to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use zn device or rn_find to establish the handle regno is the command register number as designated by each device recdata is a pointer to the address of the string to read from the device datalen is the number of bytes to read 0 15 NOTE A data length of 0 will transmit the one byte command register number RETURN VALUE The status byte from the previous command 1 means that device information indicates the peripheral card is not connected to the master and 2 means that the data length was greater than 15 SEE ALSO rn write 90 Coyote BL2500 Sends a reset sequence to the specified peripheral card The reset takes approximately 25 ms before the peripheral card will once again execute the application Allow 1 5 seconds after the reset has completed before accessing the peripheral card This function will check peripheral card information to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use zn device or rn_find to establish the handle resettype describes the type of reset 0 hard reset equivalent to power up All logic is reset 1 soft reset only the microprocessor logic is reset RETURN VALUE The status byte from the previous command 1 means that device information in
45. commands to the periph eral card The receive function is used to read back information sent to the master by the peripheral card A clock is used to synchronize data going between the two devices at high speed The master is the source of this clock A slave select SS function originates at the master and when detected by a peripheral card causes it to become selected and respond to commands received from the master The signals themselves are differential RS 422 which are series terminated at the source With this type of termination the maximum frequency is limited by the round trip delay time of the cable Although a peripheral card could theoretically be up to 45 m 150 ft from the master for a data rate of 1 MHz Rabbit recommends a practical limit of 10 m 33 ft Connections between peripheral cards and masters are done using standard 8 conductor Ethernet cables Masters and peripheral cards are equipped with RJ 45 8 pin female con nectors The cables may be swapped end for end without affecting functionality D 2 1 Control and Routing Control starts at the master when the master asserts the slave select signal SS Then it simultaneously sends a serial command and clock The first byte of a command contains the address of the peripheral card if more than one peripheral card is connected A peripheral card assumes it is selected as soon as it receives the select signal For direct master to peripheral card connections this is as
46. constants for the A D converter are stored in the simulated EEPROM area of the flash memory You may find it useful to retrieve the calibration constants and save them for future use for example if you should need to replace the RabbitCore module on the Coyote The following sample programs found in the ADC subdirectory in SAMPLES BL2500 illustrate how to save or retrieve the calibration constants Note that both sample programs prompt you to use a serial number for the Coyote This serial number can be any 5 digit number of your choice and will be unique to a particular Coyote Do not use the MAC address on the bar code label of the RabbitCore module attached to the Coyote since you may at some later time use that particular RabbitCore module on another Coyote and the previously saved calibration data would no longer apply e UPLOADCALIB C This program demonstrates reading calibration constants from a controller s user block in flash memory and transmitting the file using a serial port with a PC serial utility such as Tera Term NOTE Use the sample program DNLOADCALIB C to retrieve the data and rewrite it to the single board computer DNLOADCALIB c This program demonstrates how to retrieve your analog calibration data to rewrite them back to simulated EEPROM in flash using a serial utility such as Tera Term NOTE Calibration data must be saved previously in a file by the sample program UPLOADCALIB C NOTE In addition to load
47. dicates the peripheral card is not connected to the master Sets software watchdog timeout period Call this function prior to enabling the software watchdog timer This function will check device information to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use zn device or rn_find to establish the handle timeout is a timeout period from 0 025 to 6 375 seconds in increments of 0 025 seconds Entering a zero value will disable the software watchdog timer RETURN VALUE The status byte from the previous command 1 means that device information indicates the peripheral card is not connected to the master User s Manual 91 Enables the hardware and or software watchdog timers on a peripheral card The software on the periph eral card will keep the hardware watchdog timer updated but will hard reset if the time expires The hardware watchdog cannot be disabled except by a hard reset on the peripheral card The software watch dog timer must be updated by software on the master The peripheral card will soft reset if the timeout set by rn sw wdt expires This function will check device information to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use zn device or rn_find to establish the handle wdttype 0 enables both hardware and software watchdog timers 1 enables hardwar
48. e click on the file name of the self extracting ZIP file 2 The extracting program will prompt you for a folder in which to place the files 3 Enter the drive letter and the name of the Dynamic C folder where the libraries and samples are to be added for example C DCRabbit801 4 Click the UnZip button The files from the ZIP directory will then load automatically in your Dynamic C folder Additional folders will be created as needed and the LIB DIR DEFAULT H and BOARD TYPES LIB files will be overwritten with the information needed to use the Coyote You will be able to use the revamped Dynamic C installation with the Coyote and you will continue to be able to use this installation with all the other Rabbit products you were able to use before 40 Coyote BL2500 4 2 Sample Programs Sample programs are provided in the Dynamic C SAMPLES folder The sample program PONG C demonstrates the output to the STDIO window The various directories in the SAMPLES folder contain specific sample programs that illustrate the use of the correspond ing Dynamic C libraries The SAMPLES BL2500 folder provides sample programs specific to the Coyote Each sample program has comments that describe the purpose and function of the program Fol low the instructions at the beginning of the sample program To run a sample program open it with the File menu if it is not still open compile it using the Compile menu and then run it by selectin
49. e installation of Dynamic C and any future upgrades NOTE If you have an earlier version of Dynamic C already installed the default instal lation of the later version will be in a different folder and a separate icon will appear on your desktop User s Manual 13 2 4 Starting Dynamic C Once the BL2500 is connected to your PC and to a power source start Dynamic C by double clicking on the Dynamic C icon on your desktop or in your Start menu Dynamic C defaults to using the serial port on your PC that you specified during installa tion If the port setting is correct Dynamic C should detect the BL2500 and go through a sequence of steps to cold boot the BL2500 and to compile the BIOS Some versions of Dynamic C will not do the initial BIOS compile and load until the first time you compile a program 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 both ends of the programming cable to ensure that it is firmly plugged into the PC and the programming port If there are no faults with the hardware select a different COM port within Dynamic C From the Options menu select Communications Select another COM port from the list then click OK Press lt Ctrl Y gt to force Dynamic C to recompile the BIOS If Dynamic C still reports it is unable to locate the target system repeat the
50. e program DIGOUT C and in Figure C 5 for the BL2500 TCPIP TCP IP sample programs 2 Make sure that your Coyote is connected to your PC and that the power supply is con nected to the Coyote and plugged in as described in Chapter 2 Getting Started Header J11 Screw Terminals J1 K J7 3 GND J11 9 INOO J11 1 J11 3 J11 4 _ D Zr EE E 3 ri NM r Jumpers 4 i JOm 90000008 7 H1 None eru Sc SITUE sees 5 lO OOOO H2 As shown B i iso NOOOO Ho weu O z O e OOOBMIOOON E CITTA in o o I o 9S e a z o Ki ON re zi z N y EN Tce Q T J m Ber me As i Di REG wo em V cam vasi GEF LH B O Een ayog onga R27 eg E D 3 amp lL o SSSOSese R21 R20 Ri9 R5405 TERMINATION RESISTORS Figure C 3 Connections Between Coyote and Demonstration Board for DIGIN C Sample Program User s Manual 81 Demonstration Board Header J3 J7 Screw Terminals J1 K J7 3 OUTO J3 1 OUT1 J3 2 OUT2 J3 3 OUTS J3 4 Jumpers H1 None H2 As shown 5 ROSS WOW RAT UI rs fr On O Oooooooom Q 5 5S in men es Ke OOOOO Tg um EIS ot d on
51. e watchdog timer 2 enables software watchdog timer RETURN VALUE The status byte from the previous command 1 means that device information indicates the peripheral card is not connected to the master SEE ALSO rn hitwd rn sw wdt Hits software watchdog Set the timeout period and enable the software watchdog prior to using this function This function will check device information to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use zn device orrn find to establish the handle count is a pointer to return the present count of the software watchdog timer The equivalent time left in seconds can be determined from count x 0 025 seconds RETURN VALUE The status byte from the previous command 1 means that device information indicates the peripheral card is not connected to the master SEE ALSO rn enable wdt rn sw wdt 92 Coyote BL2500 Reads the status of which reset occurred and whether any watchdogs are enabled PARAMETERS handle is an address index to device information Use zn device or rn_find to establish the handle retdata is a pointer to the return address of the communication byte A set bit indicates which error occurred This register is cleared when read 7 HW reset has occurred 6 SW reset has occurred 5 HW watchdog enabled 4 SW watchdog enabled 3 2 1 0 Reserved RETURN VALUE The status byte from the
52. e you are sure the new patch works entirely to your satisfaction you may retire the existing installation but keep it available to handle legacy applications 4 1 1 2 Upgrades 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 Dynamic C is a complete software development system but does not include all the Dynamic C features Rabbit also offers add on Dynamic C modules containing the popular uC OS HI real time operating system as well as PPP Advanced Encryption Standard AES and other select libraries In addi tion to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase User s Manual 39 4 1 2 Accessing and Downloading Dynamic C Libraries The libraries needed to run the Coyote are available on the CD included with the Develop ment Kit or they may be downloaded from http www rabbit com support downloads on Rabbit s Web site You may need to download upgraded or additional libraries to run selected RabbitNet peripheral cards When downloading the libraries from the Web site click on the product specific links until you reach the links for the BL2500 download Once you have downloaded the self extracting ZIP file the following instructions will help you to add the libraries and sample programs to your existing Dynamic C installation 1 Doubl
53. efer to the Dynamic C TCP IP User s Manual to develop your own applications An Introduction to TCP IP provides background information on TCP IP and is available on the Web site 64 Coyote BL2500 APPENDIX A SPECIFICATIONS Appendix A provides the specifications for the Coyote User s Manual 65 A 1 Electrical and Mechanical Specifications Figure A 1 shows the mechanical dimensions for the Coyote RJ 45 jack extends Diameter of mounting 0 16 4 0 mm holes 0 12 3 mm past edge of board This mounting hole 3 50 is located under the 0 24 RabbitCore module 6 1 mid mzdr m dr var A I H ky SE E 2 E otEo0 5 og vog 5 118 oS S Do XID d R70 a B Do oo SE R 2 g E E R66 i mo eX Se Es H 8 LI Rez el Co a O f E SG x Ser EHS ro Og E lt 2 d nC 218 O dE ow T AE Le Y 3 Y Y Sz Ng og of 0 19 lt gt i903 10 20 4 9 i 5 1 3 94 gt 100 KE a Wl 1 16 F c 29 on e moo o e y t oS Le 3 94 gt ox 100 e Figure A 1 Coyote Dimensions NOTE All measurements are in inches followed by millimeters enclosed in parentheses 66 Coyote BL2500 Table A 1 Coyote Specifications
54. efine MY NAMESERVER 10 10 6 1 In this case the gateway and nameserver are not used and are commented out The IP address of the board is defined to be 10 1 1 2 The IP address of you PC can be defined as 10 1 1 1 User s Manual 61 5 2 2 How to Set Up your Computer s IP Address for a Direct Connection When your computer is connected directly to the Coyote via an Ethernet connection you need to assign an IP address to your computer To assign the PC the address 10 10 6 101 with the netmask 255 255 255 0 do the following Click on Start gt Settings gt Control Panel to bring up the Control Panel and then dou ble click the Network icon Depending on which version of Windows you are using look for the TCP IP Protocol Network gt Dial Up Connections Network line or tab Double click on this line or select Properties or Local Area Connection gt Properties to bring up the TCP IP properties dialog box You can edit the IP address and the subnet mask directly Disable obtain an IP address automatically You may want to write down the existing values in case you have to restore them later It is not necessary to edit the gate way address since the gateway is not used with direct connect IP 10 10 6 101 Netmask 255 255 255 0 User s PC Ethernet crossover cable Direct Connection PC to Coyote Board 62 Coyote BL2500 5 2 3 Run the PINGME C Demo Connect the crossover cable from your computer s E
55. g Run in the Run menu The Coyote must be in Program mode see Section 3 6 Serial Programming Cable and must be connected to a PC using the programming cable as described in Section 2 2 BL2500 Connections More complete information on Dynamic C is provided in the Dynamic C User s Manual 4 2 1 General Coyote Operation The following sample programs are found in the SAMPLES BL2500 e CONTROLLED c Uses the D A converters to vary the brightness of the LEDs on the Demonstration Board e FLASHLEDS c Uses cofunctions and costatements to flash LEDs on the Coyote at different intervals TOGGLESWITCH C Uses costatements to detect switches presses on the Demonstra tion Board with press and release debouncing Corresponding LEDs will turn on or off 4 2 2 Digital UO The following sample programs are found in the IO subdirectory in SAMPLES BL2500 e DIGIN C This program demonstrates the use of the digital inputs and the function call d gIn using the Demonstration Board to see an input channel toggle from HIGH to LOW when pressing a pushbutton on the Demonstration Board DIGoUT c This program demonstrates the use of the digital outputs and the function call digout using the Demonstration Board to see the logic levels of output chan nels in the STDIO window and the state of the corresponding LEDs on the Demonstra tion Board 4 2 3 Serial Communication The following sample programs are found in the SERIAL subdirecto
56. ged in an SOIC case The standard Coyote s RabbitCore modules come with 128K of SRAM 3 8 2 Flash Memory The Coyote is also designed to accept 128K to 512K of flash memory The standard Coyote s RabbitCore modules comes with one 256K flash memory NOTE Rabbit recommends that any customer applications should not be constrained by the sector size of the flash memory since it may be necessary to change the sector size in the future Writing to arbitrary flash memory addresses at run time is also discouraged Instead use a portion of the user block area to store persistent data The functions writeUserBlock and readUserBlock are provided for this Refer to the Rabbit 3000 Microprocessor Designer s Handbook for additional information A Flash Memory Bank Select jumper configuration option based on 0 surface mounted resistors exists at header JP2 on the RabbitCore module This option used in conjunction with some configuration macros allows Dynamic C to compile two different co resident programs for the upper and lower halves of the 256K flash in such a way that both pro grams start at logical address 0000 This is useful for applications that require a resident download manager and a separate downloaded program See Technical Note 218 Imple menting a Serial Download Manager for a 256K Flash for details 36 Coyote BL2500 4 SOFTWARE Dynamic C is an integrated development system for writing embedded software It run
57. goes low This prevents the Vcc line from draining the battery VRAM RESOUT Figure B 2 VRAM Switch The field effect transistor provides a very small voltage drop between Vcc and VRAM 100 mV typically 10 mV so that the board components powered by Vcc will not have a significantly different voltage than VRAM When the Coyote is not in reset the RESOUT line will be high This allows VRAM to nearly equal Vcc When the Coyote is in reset the RESOUT line will go low This provides an isolation between Vcc and VRAM B 2 2 Reset Generator The Coyote s RabbitCore module uses a reset generator to reset the Rabbit 3000 micro processor when the voltage drops below the voltage necessary for reliable operation The reset typically occurs at 2 93 V 2 63 V for the BL2510 B 3 Chip Select Circuit The current drain on the battery in a battery backed circuit must be kept at a minimum When the Coyote is not powered the battery keeps the SRAM memory contents and the real time clock RTC going The SRAM has a powerdown mode that greatly reduces power consumption This powerdown mode is activated by raising the chip select CS signal line Normally the SRAM requires Vcc to operate However only 2 V is required for data retention in powerdown mode Thus when power is removed from the circuit the battery voltage needs to be provided to both the SRAM power pin and to the CS signal line The CS control circuit accomplishes
58. hese Rabbit based subsystems designed into the Coyote RabbitCore Module Outputs A D Converter Ethernet BL2500 BL2550 Figure 8 Coyote Subsystems The memory and microprocessor are located on the RabbitCore module If you have more than one Coyote or other Rabbit products built around RabbitCore modules take care not to swap the RabbitCore modules since they contain system ID block information and cali bration constants that are unique to the board they were originally installed on It is a good idea to save the calibration constants should you need to replace a RabbitCore module in the future See Section 4 2 6 Using System Information from the RabbitCore Module for more information User s Manual 17 3 1 Coyote Pinouts The Coyote pinouts are shown in Figure 9 Digital Outputs Digital Inputs Digital Inputs lo 00000001 lo ooooooon RabbitNet J4 Voc RS 485 RS 485 GND TxC RxC CLKC 3 3 V GND RS 485 Clocked CMOS FH ps4 HH ps3 m Ds2 HH ps1 Analog o m IC Hl K nzeg E SH Ethernet Figure 9 Coyote Pinouts 18 Coyote BL2500 3 1 1 Headers Standard Coyote models are equipped with five 1 x 10 friction lock connector terminals J1 J3 J9 J11 and J12 where pin 9 is removed to polarize the connector te
59. ill now remain off whenever you are in the project file where you defined the macro NOTE Disabling the clock doubler will degrade the A D and D A conversion 34 Coyote BL2500 3 7 2 Spectrum Spreader The Rabbit 3000 features a spectrum spreader which helps to mitigate EMI problems By default the spectrum spreader is on automatically but it may also be turned off or set to a stronger setting The means for doing so is 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 set ting will be used 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 3000 Microprocessor User s Manual for more information on the spectrum spreading setting and the maximum clock speed User s Manual 35 3 8 Memory 3 8 1 SRAM The Coyote s RabbitCore module is designed to accept 128K to 512K of SRAM packa
60. ing the calibration constants on the replacement RabbitCore module you will also have to add the product information for the Coyote to the ID block associated with the RabbitCore module The sample program WRITE IDBLOCK C available on the Rabbit Web site at www rabbit com support feature downloads shtml provides specific instructions and an example 4 2 7 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 Set the real time clock using the SETRTCKB C sample program from the Dynamic C SAMPLESNRTCLOCK folder using 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 User s Manual 43 4 3 Coyote Libraries With Dynamic C running click File gt Open and select Lib The following list of Dynamic C libraries and library directories will be displayed Two library directories provide libraries of function calls that are used to develop applications for the Coyote BL2500 libraries associated with features specific to the Coyote The functions in the BL25xx LIB library are described in Section 4 4 Coyote Function Calls RN_CFG_BL25 LIB used to configure the BL2500 for use with RabbitNet peripheral cards e TCPIP Libraries specific to using TCP IP functions Other generic functions applicable to all devices based on the Rabbit 3000 micro
61. ing will increase the frequency by a factor of 4 PARAMETER frequency is the frequency in Hz RETURN VALUE Actual frequency set This will be the closest possible match to the requested frequency Option flags are used to enable features on an individual PWM channels Use pwm_init to set the frequency An exception error will occur if brdInit has not been called previously PARAMETERS channel is the PWM output channel to set 0 for DAO 1 for DAI pwmoption is used to set the PWM options as a combination of the following bit masks PWM_NORMAL sets normal push pull logic output PWM_SPREAD Set pulse spreading The duty cycle is spread over four separate pulses to increase the pulse frequency Use this option for A D and D A conversions PWM OPENDRAIN sets the PWM output pin to be open drain This mask is usually not used RETURN VALUE None SEE ALSO pwm init brdInit User s Manual 53 Sets a voltage 0 to Vgq on an analog output channel given a data point on the 1024 clock count cycle Call pwmOutConfig and pwm_init before using this function An exception error will occur if these functions were not been called previously PARAMETERS channel is the PWM output channel to write 0 for DAO 1 for DAI rawdata is data value 0 1024 for a 1024 clock count cycle The value may be calculated using the percent duty cycle value percentage that is on or high of the 1024 clock count cycle for example
62. irect Connection esses 62 23 2 3 Run the PINGME GC Deino oet iere eit iier honte ipee eet 63 5 2 4 Running More Demo Programs With a Direct Connection sess 64 5 3 Where DoI Go From Here tette pen tee pei tei oe PO Ore 64 Appendix A Specifications 65 A 1 Electrical and Mechanical Spechceatnong eene nennen ens 66 EN VD Ee 68 A 1 2 Physical Mounting e peeeR bee Tete EE GALA ee nee Hee 69 A2 Conformal Coating eremi tete epe i epe ipte n d eee nh 70 A 3 Jumper Configurations 3 eere pe ERR e EUR REI e TREE Deer tens 71 A 4 Use of Rabbit 3000 Parallel Porte 72 Appendix B Power Supply 75 BU Power Supplies etie dte eH ERO RR PR pU Da pO 75 B 2 Batteries and External Battery Connections rennen enne 76 B 2 Power to YVYRAM OV soc D REGE t E ete ER TI B 2 2 Reset Genetratofu i cup esee a rer ete etn ere dole g tee ee ES A E TI B 3 Chip Select Circuit rines pectet a re UE E EN eere ra e better sets TI BA Power to Peripheral Cards sie ra cei toe ertet XI e CE UNE EP EER EPOR uE er 78 Appendix C Demonstration Board Connections 79 CH Assemble Wire Harness nire RE REENEN EERSTEN EENEG 79 C 2 Connecting Demonstration Board 81 Coyote BL2500 Appendix D RabbitNet 85 Di General RabbitNet Description ied nit ee ete o dite dd etg eie 85 D 1 1 RabbitNet Connections rennen nennen nennen nete tree erret nennen en nene nennen 85 DZ RabbitNet Peripheral Cards ee DEE Dt eiie ds 86 D2 Physical
63. le you make or otherwise work with the connections to the headers This will protect your BL2500 from inadvertent shorts or power spikes 2 2 1 Hardware Reset A hardware reset is done by unplugging the AC adapter then plugging it back in or by shorting out the reset pads on the back of the BL2500 see Figure 6 pads 13534 O 2004 Z WORLD INC 175 0295 O Figure 6 Location of RESET Pads 12 Coyote BL2500 2 3 Installing Dynamic C If you have not yet installed Dynamic C version 7 33 or a later version do so now by inserting the Dynamic C CD from the BL2500 OEM2500 Development Kit in your PC s CD ROM drive The CD will auto install unless you have disabled auto install on your PC If the CD does not auto install click Start gt Run from the Windows Start button and browse for the Dynamic C setup exe file on your CD drive Click OK to begin the installation once you have selected the setup exe file 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 create a new desktop icon that points to 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 The Dynamic C User s Manual provides detailed instructions for th
64. lex 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 gt 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 print 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 38 Coyote BL2500 4 1 1 Upgrading Dynamic C 4 1 1 1 Patches and Bug Fixes Dynamic C patches that focus on bug fixes are available from time to time Check the Web site at www rabbit com support for the latest patches workarounds and bug fixes The default installation of a patch or bug fix is to install the file in a directory folder dif ferent from that of the original Dynamic C installation Rabbit recommends using a differ ent directory so that you can verify the operation of the patch without overwriting the existing Dynamic C installation If you have made any changes to the BIOS or to libraries or if you have programs in the old directory folder make these same changes to the BIOS or libraries in the new directory containing the patch Do not simply copy over an entire file since you may overwrite a bug fix Onc
65. lock user block 96 Coyote BL2500 function calls readUserBlock 36 writeUserBlock 36 sample programs USERBLOCK_INFO C 52 55 56 User s Manual 97 98 Coyote BL2500 SCHEMATICS 090 0158 Coyote BL2500 Schematic www rabbit com documentation schemat 090 0158 pdf 090 0042 Demonstration Board Schematic www rabbit com documentation schemat 090 0042 pdf 090 0128 Programming Cable Schematic www rabbit com documentation schemat 090 0128 pdf You may use the URL information provided above to access the latest schematics directly The Coyote consists of a main board with a RabbitCore module Refer to the RabbitCore module manuals for more information on the RabbitCore modules including their schematics User s Manual 99
66. nate Uses of the Programming Port AII three clocked Serial Port A signals are available as e asynchronous serial port e an asynchronous serial port with the clock 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 3000 startup mode SMODEO SMODE I status and reset pins are available on the programming port The two startup mode pins determine what happens after a reset the Rabbit 3000 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 It can be driven low on the first op code fetch cycle 2 It can be driven low during an interrupt acknowledge cycle 3 t can also serve as a general purpose output The RESET IN pin is an external input that is used to reset the Rabbit 3000 and the RCM3400 onboard peripheral circuits The serial programming port can be used to force a hard reset on the RCM3400 by asserting the RESET IN signal Refer to the Rabbit 3000 Microprocessor User s Manual for more information 3 5 4 RabbitNet Ports The RJ 45 jacks labeled RabbitNet are multiplexed clocked SPI RS 422 serial I O expan sion ports for use with peripheral cards currently being developed The RabbitNet jack does not support Ethernet c
67. nes 8 E EE 7 debugging features 38 how to set PC IP address 62 aL downloading RabbitNet librar clock doubler 34 J 40 connections installation 13 EE l E y Pince Set SS Rabbit Embedded Security connectivity tools Pack 4 power to peripheral cards 78 Connectivity Kit 4 er Ze is MD 4 1 J8 crimp tool eee eeeeeteeeeeeeeee 4 pre Ce EE power to peripheral cards 78 friction lock connector parts ES 38 jumper configurations 71 19 m BOUND 14 Demonstration Board 81 82 ire PORTER M 83 D ee dE om d D A converter upgrades and patches 39 EE function calls tion resistors 71 anaOutCalib o u 55 E Jumper Ee E eege Ethernet cables 59 M anaOutEEWr 56 GC Ethernet connections 59 pwm init oe eee 53 memory iersinii riese 36 User s Manual 95 models AAA ENEE 2 D A converter 86 USERBLOCK INFO C 52 BL2500 eege es 2 digital I O 86 55 56 BE2510 4 teen 2 display keypad interface 86 serial communication OEM versions 2 relay card 86 function calls physical implementation 87 Sser485Rx nieres 49 P RabbitNet port 31 S rA8S TX iie 49 peripheral cards 6 RabbitNet port programming port 31 connection to master 85 86 function calls RabbitNet port
68. ol Kit is for development purposes only It is the customer s responsibility to provide a CE compliant power supply for the end product application When connecting the BL2500 single board computer to outdoor cables the customer is responsible for providing CE approved surge lightning protection Rabbit recommends placing digital I O or analog cables that are 3 m or longer in a metal conduit to assist in maintaining CE compliance and to conform to good cable design practices When installing or servicing the BL2500 it is the responsibility of the end user to use proper ESD precautions to prevent ESD damage to the BL2500 Safety All inputs and outputs to and from the BL2500 series of single board computers must not be connected to voltages exceeding SELV levels 42 4 V AC peak or 60 V DC The lithium backup battery circuit on the BL2500 single board computer has been designed to protect the battery from hazardous conditions such as reverse charging and excessive current flows Do not disable the safety features of the design 1 4 2 Interfacing the BL2500 to Other Devices Since the BL2500 series of single board computers is designed to be connected to other devices good EMC practices should be followed to ensure compliance CE compliance is ultimately the responsibility of the integrator Additional information tips and technical assistance are available from your authorized Rabbit distributor and are also available on our Web site a
69. onnections User s Manual 31 3 5 5 Ethernet Port Figure 17 shows the pinout for the RJ 45 Ethernet port header J4 on the RabbitCore mod ule Note that some Ethernet connectors are numbered in reverse to the order used here ETHERNET RJ 45 Plug Figure 17 RJ 45 Ethernet Port Pinout Two LEDs are placed next to the RJ 45 Ethernet jack one to indicate an Ethernet link LNK and one to indicate Ethernet activity ACT The transformer connector assembly ground is connected to the RabbitCore module printed circuit board digital ground via a 0 resistor R31 as shown in Figure 18 RJ 45 Ethernet Plug m R31 Board Chassis Ground Ground Figure 18 Isolation Resistor R31 on RabbitCore Module The RJ 45 connector is shielded to minimize EMI effects to from the Ethernet signals 32 Coyote BL2500 3 6 Serial Programming Cable The programming cable is used to connect the serial programming port of the Coyote to a PC serial COM port The programming cable converts the RS 232 voltage levels used by the PC serial port to the CMOS voltage levels used by the Rabbit 3000 When the PROG connector on the programming cable is connected to the programming header on the Coyote s RabbitCore module programs can be downloaded and debugged over the serial interface The DIAG connector of the programming cable may be used on the programming header on the Coyote s RabbitCore module with the Co
70. oun EENE EEE EEA TRE 35 3 9 TEEN 36 ERT EE 36 SE AMPLE 36 User s Manual Chapter 4 Software 37 43 Runmng Dynamic C rhet eet ee o sos tus e etie iet ean e i eed 37 ALT Upgrading Dynamic C eoe edP eee reet eee teen 39 4 1 2 Accessing and Downloading Dynamic C Libraries eseeeeeeeen 40 42 Sample e EE 41 4 2 1 General Coyote Operation tho ueteres 41 4 2 2 RER EE LR EE 41 4 2 3 Serial Communication cider ERO reete ee EES e eei 41 424 A D Converter Eu EE 42 4 2 5 D A Converter Outputs terrse EE ee bee ey 42 4 2 6 Using System Information from the RabbitCore Module 43 4 2 7 Real Time Clock EE 43 KE RL 44 4 4 Coyote Function Calls e Sech A AS A AIA EA Ni AA e Aaa ets 45 4 41 Board Initializations s coo dE e HER Uer sare aaas 45 4 42 Digital VO iiiter ree a etse einem dst else eU e EE en 46 CUM MDIb cL rP En 48 4 4 Ae Serial Communications ee a e e ter le PUn qud eor it co E RE rece eer eg 49 44 5 Analog Inputs geed tase aie kee ete en pinea BPO EE EEN 50 Z Analog Outp lts co ate tO REO SE OR ENEE SUR ERR Tee De 53 4 47 RabbitNet POrt mene Ue eheu drip etsi edant iol teet eid 57 Chapter 5 Using the TCP IP Features 59 5 1 TCP IP Connections tege EE eel ete e i riego eei ee AED es 59 5 2 TCP IP Sample Progratmns rente eei Ne 61 5 2 1 How to Set IP Addresses in the Sample Drogerams e 61 5 2 2 How to Set Up your Computer s IP Address for a D
71. output becomes approximately 6 V and 0 V is output as 6 V The RS 232 transceiver also provides the proper line loading for reliable communi cation RS 232 can be used effectively at the Coyote s maximum baud rate for distances of up to 15 m RS 232 flow control on an RS 232 port is initiated in software using the serXflowcontrolOn function call from RS232 LIB where X is the serial port E or F 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 PGDR SERX_RTS_SHADOW Shadow register for the RTS line s parallel port e g PGDRShadow SERX RTS BIT The bit number for the RTS line SERX CTS PORT Data register for the parallel port that the CTS line is on e g PCDRShadow SERX CTS BIT The bit number for the CTS line Standard 3 wire RS 232 communication using Serial Ports E and F 1s illustrated in the fol lowing sample code define EINBUFSIZE 15 define EOUTBUFSIZE 15 define FINBUFSIZE 15 define FOUTBUFSIZE 15 ifndef 232BAUD define 232BAUD 115200 endif main serEopen _232BAUD serFopen _232BAUD serEwrF lush serErdFlush serFwrFlush serFrdFlush 28 Coyote BL2500 3 5 2 RS 485 The Coyote has one RS 485 serial channel which is connected to the Rabbit 3000 Serial Port D through an RS 485 transceiver The half duplex communication uses PA4 to con trol the
72. owered or not When the Coyote is powered normally and Vcc is within operating limits the SRAM and the real time clock are powered from Vcc If power to the board is lost or falls below 2 93 V the VRAM and real time clock power will come from the battery The reset generator circuit controls the source of power by way of its RESET output signal A soldered in 1000 mA h lithium battery provides power to the real time clock and SRAM when external power is removed from the circuit board The drain on the battery is less than 10 uA when there is no external power applied to the Coyote and so the expected shelf life of the battery is more than 1000 mA h 11 4 years 10 uA The drain on the battery is typically less than 4 uA when external power is applied and so the expected battery in service life is 1000 mA h 4 uA Since the nominal shelf life of the lithium battery is 10 20 years the in service life should not be of concern 28 years NOTE The SRAM contents and the real time clock settings will be lost if the battery is replaced with no power applied to the Coyote Exercise care if you replace the battery while external power is applied to the Coyote 76 Coyote BL2500 B 2 1 Power to VRAM Switch The VRAM switch on the Coyote s RabbitCore module shown in Figure B 2 allows the battery backup to provide power when the external power goes off The switch provides an isolation between Vcc and the battery when Vcc
73. previous command PARAMETERS handle is an address index to device information Use zn device or rn_find to establish the handle retdata is a pointer to the return address of the communication byte A set bit indicates which error occurred This register is cleared when read 7 Data available and waiting to be processed MOSI master out slave in 6 Write collision MISO master in slave out 5 Overrun MOSI master out slave in 4 Mode fault device detected hardware fault 3 Data compare error detected by device 2 1 0 Reserved RETURN VALUE The status byte from the previous command User s Manual 93 D 3 1 Status Byte Unless otherwise specified functions returning a status byte will have the following format for each designated bit 00 Reserved 01 Ready 10 Busy 11 Device not connected 0 Device 1 Router 0 No error 1 Communication error Reserved for individual peripheral cards Reserved for individual peripheral cards 0 Last command accepted 1 Last command unexecuted 0 Not expired x 1 HW or SW watchdog timer expired Use the function rn_comm_status to determine which error occurred T Use the function zn rst status to determine which timer expired 94 Coyote BL2500 A pwmoOut sseseses 54 StEpS RR 59 pwmOutConfig 53 Ethernet port
74. processor are described in the Dynamic C Function Reference Manual 44 Coyote BL2500 4 4 Coyote Function Calls 4 4 1 Board Initialization Call this function at the beginning of your program This function initializes Parallel Ports A through G for use with the Coyote The ports are initialized according to Table A 3 Summary of initialization 1 RS 485 is not initialized 2 RS 232 is not initialized 3 Unused configurable I O are either pulled up inputs or outputs set high 4 PWM for DAO and DAI set to 57 600 Hz and output voltage is zero Uses functions pwm init pwmOutConfig and pwmOut 5 Calibration constants for analog channels ADO DAO and DAT are read from flash user block User s Manual 45 4 4 2 Digital I O Sets the state of digital outputs OUTO OUT7 whereOUTO OUT7 are sinking outputs A run time error will occur for the following conditions 1 channel or value is out of range 2 brdInit was not called first PARAMETERS channel is the digital output channels 0 7 value is the output value 0 or 1 RETURN VALUE None SEE ALSO digIn digBankOut Writes the state of a block of designated digital output channels The bank consists of OUTO OUT7 This call is faster than setting the individual channels but does not output states simultaneously States are written in succession from OUT7 OUTO A run time error will occur for the following conditions 1 bank or value is out of range 2
75. puts sinking up to 200 mA at up to 36 V DC one 8 bit analog input channel two 9 bit PWM analog output channels six serial ports including RabbitNet expansion ports one 10 100 compatible RJ 45 Ethernet port with standard 10Base T interface optional 10 100Base T interface 4 user programmable LEDs battery backed real time clock watchdog supervisor onboard backup battery for real time clock and SRAM User s Manual 1 Two BL2500 models are available Their standard features are summarized in Table 1 Table 1 BL2500 Models Feature BL2500 BL2510 Microprocessor Rabbit 30009 running at 29 4 MHz Flash Memory 256K Static RAM 128K Ethernet Connections Yes No RabbitCore Module Used RCM3010 RCM3110 A D Converter Input Yes Yes 512K options available The BL2500 consists of a main board with a RabbitCore module Refer to the RabbitCore module manuals available on Rabbit s Web site for more information on the RabbitCore modules including their schematics Appendix A provides detailed specifications Visit our Web site for up to date information about additional add ons and features as they become available The Web site also has the latest revision of this user s manual 1 1 1 OEM Versions The BL2500 and BL2510 models are also available in OEM versions as the OEM2500 and the OEM2510 minimum quantity 500 where certain features have been removed or eliminated
76. ra z223 2 o 000 a D2 I lus Apr H O LO ca31 CO vaal Hazznga O mum O oomoo POST CO zai LO SCHER PT Eig a Colo OOOOOOOR lOo ooooooom rj Figure C 4 Connections Between Coyote and Demonstration Board for DIGOUT C Sample Program Coyote BL2500 Header J3 J7 J11 Screw Terminals J1 K 7 3 GND J11 9 INOO J11 1 INO1 J11 2 OUTO J3 1 OUT1 J3 2 Jumpers H1 None H2 As shown rusa 3 On O OOOOCCCOE O S E FORT 3 mee les OOOO Gogo Tease e GROUND d OOQOoN IOOON S d D2 Elu e ec DO 6586 x D AS H e tagl eqs q31 vagal Wazzna O Eesen SCHER PT POST qan 2037 LO LETT pu e R21 RSASS TERMINATION RESISTORS Figure C 5 Connections Between Coyote and Demonstration Board for TCP IP SMPT C Sample Program User s Manual 83 84 Coyote BL2500 APPENDI
77. rd Add the following lines at the start of your program define RN MAX DEV 10 max number of devices define RN_MAX DATA 16 max number of data bytes in any transaction define RN_MAX PORT 2 max number of serial ports Set the following bits in RNSTATUSABORT to abort transmitting data after the status byte is returned This does not affect the status byte and still can be interpreted Set any bit com bination to abort bit 7 device busy is hard coded into driver bit 5 identifies router or slave bits 4 3 2 peripheral board specific bits bit 1 command rejected bit O watchdog timeout define RNSTATUSABORT 0x80 hard coded driver default to abort if the peripheral card is busy Provides zn init with the serial port control information needed for BL2500 series controllers RETURN VALUE None Deactivates the BL2500 RabbitNet port as a clocked serial port This call is also used by xn init PARAMETERS portnum 0 RETURN VALUE None User s Manual 57 This is a macro that enables or asserts the BL2500 RabbitNet port select prior to data transfer PARAMETERS portnum 0 RETURN VALUE None This is a macro that disables or deasserts the BL2500 RabbitNet port select to invalidate data transfer PARAMETERS portnum 0 RETURN VALUE None 58 Coyote BL2500 D 5 USING THE TCP IP FEATURES Chapter 5 discusses using the TCP IP features on the Coyote boards 5 1 TCP IP Connections
78. re in Crimp Terminal 4 Use a crimp tool or pliers to first crimp the bare wire then the insulation as shown in Figure C 1 5 Insert the crimp terminals with wires into the friction lock connector with the tab on the crimp terminal facing the opening on the side of the friction lock connector Insert the crimp terminal until the tab snaps into place in the side opening Tab ZY Plug this hole to polarize connector Insert with tab facing side opening Molex Hlp legen peas d opening Figure C 2 Insert Crimp Terminals Into Friction Lock Connector 6 Repeat these steps until all the wires and crimp terminals have been assembled TIP Use different wire colors to help you color code your harness TIP On 10 pin friction lock connectors insert a plug into the hole indicated in Figure C 2 to polarize your connector to help prevent offsetting the connector by one pin when you attach it to your Coyote Polarizing plugs are not included in Rabbit s Connectivity Kit 80 Coyote BL2500 C 2 Connecting Demonstration Board Before running sample programs based on the Demonstration Board you will have to con nect the Demonstration Board from the BL2500 OEM2500 Development Kit to the Coyote board Proceed as follows Use one of the wiring harnesses you have built to connect header J1 on the Demonstra tion Board to the Coyote The connections are shown in Figure C 3 for sample program DIGIN C in Figure C 4 for sampl
79. ripheral card sends back the character the master sent This function will check device information to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use zn device orrn find to establish the handle sendecho is the character to echo back recdata is a pointer to the return address of the character from the device RETURN VALUE The status byte from the previous command 1 means that device information indicates the peripheral card is not connected to the master User s Manual 89 Writes a string to the specified device and register Waits for results This function will check device infor mation to determine that the peripheral card is connected to a master PARAMETERS handle is an address index to device information Use rn_device or rn_find to establish the handle regno is the command register number as designated by each device data is a pointer to the address of the string to write to the device datalen is the number of bytes to write 0 15 NOTE A data length of 0 will transmit the one byte command register number RETURN VALUE The status byte from the previous command 1 means that device information indicates the peripheral card is not connected to the master and 2 means that the data length was greater than 15 SEE ALSO rn_read Reads a string from the specified device and register Waits for results This function will che
80. rminals a 2 x 5 RS 232 signal header a 2 x 5 programming header and an RJ 45 Ethernet jack on the RabbitCore module The RJ 45 jacks at J4 and J5 labeled RabbitNet are serial I O expansion ports for use with digital UO and analog I O boards currently being developed The RabbitNet jacks do not support Ethernet connections Be careful to connect your Ethernet cable to the jack labeled Ethernet Two 4 pin 0 156 friction lock connector terminals at J7 and J8 are installed to supply power DCIN and 5 V to the peripheral cards currently being developed for use with the RabbitNet Two 2 pin 0 156 friction lock connector terminals at J2 and J10 are for power supply and K connections Table 3 lists Molex connector part numbers for the crimp terminals housings and polarizing keys needed to assemble female friction lock connector assemblies for use with their male counterparts on the BL2500 Table 3 Female Friction Lock Connector Parts Friction Lock Used with BL2500 Molex Housing Molex Molex Connector Headers Part Number Crimp Terminals Polarizing Keys 0 1 1x 10 J1 J3 J9 J11 J12 22 01 2107 08 50 0113 15 04 9209 0 156 1 x4 J7 J8 09 50 3041 08 50 0108 15 04 0219 0 156 1 x2 J2 J10 09 50 3021 User s Manual 19 3 2 Indicators 3 2 1 LEDs The Coyote s RabbitCore module has two LEDs next to the RJ 45 Ethernet jack one to indicate an Ethernet link LNK and one to indicate Ethernet activi
81. ry in SAMPLES BL2500 e FLOWCONTROL C Demonstrates hardware flow control by sending a pattern of characters out of Serial Port E PG6 at115 200 bps One character at a time is received from PG6 and is displayed In this example PG3 is configured as the CTS input detecting a clear to send condition and PG2 is configured as the RTS output signaling a ready condition This demonstration can be performed with either one or two boards User s Manual 41 e SIMPLE3WIRE C Demonstrates basic initialization for a simple RS 232 3 wire loop back displayed in the STDIO window e SWITCHCHAR C This program transmits and then receives an ASCII string on Serial Ports E and F when a switch is pressed It also displays the serial data received from both ports in the STDIO window e SIMPLE485MASTER C This program demonstrates a simple RS 485 transmission of lower case letters to a slave The slave will send back converted upper case letters back to the master Coyote and display them in the STDIO window Use SIMPLESLAVE C to program the slave e SIMPLE485SLAVE C This program demonstrates a simple RS 485 transmission of lower case letters to a master Coyote The slave will send back converted upper case letters back to the master Coyote and display them in the STDIO window Use SIMPLEMASTER C to program the master Coyote 4 2 4 A D Converter Inputs The following sample programs are found in the ADC subdirectory in SAMPLES BL2500 ADO
82. s on an IBM compatible PC and is designed for use with single board computers and other devices based on the Rabbit microprocessor Chapter 4 provides the libraries function calls and sample pro grams related to the Coyote 4 1 Running Dynamic C You have a choice of doing your software development in the flash memory or in the static RAM included on the Coyote The flash memory and SRAM options are selected with the Options gt Project Options 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 developed in RAM but cannot run standalone from RAM after the programming cable is disconnected Standalone applications can only run from flash memory NOTE Do not depend on the flash memory sector size or type Due to the volatility of the flash memory market the Coyote and Dynamic C were designed to accommodate flash devices with various sector sizes 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 95 98 2000 NT Me and XP Programs can be downloaded at baud rates of up to 460
83. soon as the master asserts the select sig nal The connection is established once the select signal reaches the addressed slave At this point communication between the master and the selected peripheral card is estab lished and data can flow in both directions simultaneously The connection is maintained so long as the master asserts the select signal User s Manual 87 D 3 Function Calls The function calls described in this section are used with all RabbitNet peripheral cards and are available in the RNET LIB library in the Dynamic C RABBITNET folder Resets initializes or disables a specified RabbitNet port on the master single board computer During initialization the network is enumerated and relevant tables are filled in If the port is already initialized calling this function forces a re enumeration of all devices on that port Call this function first before using other RabbitNet functions PARAMETERS port flag is a bit that represents a RabbitNet port on the master single board computer from 0 to the maximum number of ports A set bit requires a service If port flag 0x03 both RabbitNet ports 0 and 1 will need to be serviced servicetype enables or disables each RabbitNet port as set by the port flags 0 disable port 1 enable port RETURN VALUE 0 Returns an address index to device information from a given physical node address This function will check device information to determine that the peripheral c
84. t www rabbit com Coyote BL2500 2 GETTING STARTED Chapter 2 explains how to connect the programming cable and power supply to the BL2500 2 1 Preparing the BL2500 for Development Position the BL2500 as shown below in Figure 3 Attach the four nylon 4 40 x 4 machine screws and nuts supplied with the Development Kit in the holes at the corners as shown Module E RabbitCore 1 Figure 3 Attach Nylon Screws to BL2500 Board NOTE You will have to remove the RabbitCore module to install one screw under the module When replacing the RabbitCore module it is important that you line up the pins on the module exactly with the corresponding pins on the BL2500 The header pins may become bent or damaged if the pin alignment is offset and the module will not work Permanent electrical damage may also result if a misaligned module is powered up The nylon screws serve as standoffs to facilitate handling the BL2500 during develop ment and protect the bottom of the printed circuit board against scratches or short circuits while you are working with the BL2500 User s Manual 9 2 2 BL2500 Connections 1 Connect the programming cable to download programs from your PC and to program and debug the BL2500 NOTE Use only the programming cable that has a red shrink wrap around the RS 232 level converter Part No 20 101 0513 If you are using a BL2500 with the optional 10 100Base T E
85. tage is too low indicator If DAO is smaller than the analog voltage presented at ADO then PB2 will be true high If this happens the pro gram will need to raise the DAO voltage The A D converter has no reference voltage There is a relative accuracy between mea surements but no absolute accuracy without calibration This is because the 3 3 V supply can vary 5 the pulse width modulated outputs might not reach the full 0 V and 3 3 V rails out of the Rabbit 3000 microprocessor and the gain resistors used in the circuit have a 1 tolerance For these reasons each Coyote needs to be calibrated individually with the constants held in software to be able to rely on an absolute accuracy The Coyote has this calibration support An A D conversion takes less than 100 ms with a 29 4 MHz Coyote 3 4 2 D A Converters Two D A converter outputs DAO and DAI are supplied on the Coyote These are shown in Figure 14 Figure 14 Schematic Diagram of D A Converters The D A converters have no reference voltage Although they may be fairly accurate from one programmed voltage to the next they do not have absolute accuracy This is because the 3 3 V supply can change 5 the PWM outputs might not achieve the full 0 V and 3 3 V rail out of the processor and the gain resistors in the circuit have a 1 tolerance The D A converters therefore need individual calibration with the calibration constants held in software before absol
86. tests the TCP IP portion of the board 2 6 Where Do I Go From Here NOTE If you purchased your BL2500 through a distributor or Rabbit partner contact the distributor or partner first for technical support If there are any problems at this point Use the Dynamic C Help menu to get further assistance with Dynamic C Check the Rabbit Technical Bulletin Board and forums at www rabbit com support bb and at www rabbit com forums Use the Technical Support e mail form at www rabbit com support If the sample program ran fine you are now ready to go on to explore other BL2500 fea tures and develop your own applications Chapter 3 Subsystems provides a description of the BL2500 s features Chapter 4 Software describes the Dynamic C software libraries and introduces some sample pro grams Chapter 5 Using the TCP IP Features explains the TCP IP features User s Manual 15 2 7 Using the Coyote In High Vibration Environments If you plan to use your Coyote in a high vibration environment the RabbitCore module may be secured more solidly to a swage on the Coyote main board using a 2 56 x 4 machine screw as shown in Figure 7 Figure 7 Secure RabbitCore Module to Coyote for High Vibration Environments 16 Coyote BL2500 3 SUBSYSTEMS Chapter 3 describes the principal subsystems for the Coyote e Digital I O e Analog Features e Serial Communication e Memory Figure 8 shows t
87. the reset pins on the back of the Coyote When the PROG connector of the programming cable connects the Coyote to your PC and Dynamic C is running a RESET occurs when you press lt Ctrl Y gt The green LNK light on the Coyote s RabbitCore module is on when the Coyote is prop erly connected either to an Ethernet hub or to an active Ethernet card The orange ACT light flashes each time a packet is received 60 Coyote BL2500 5 2 TCP IP Sample Programs We have provided a number of sample programs demonstrating various uses of TCP IP for networking embedded systems These programs require that you connect your PC and the Coyote together on the same network This network can be a local private network pre ferred for initial experimentation and debugging or a connection via the Internet 5 2 1 How to Set IP Addresses in the Sample Programs With the introduction of Dynamic C 7 30 we have taken steps to make it easier to run many of our sample programs You will see a TCPCONFIG macro This macro tells Dynamic C to select your configuration from a list of default configurations You will have three choices when you encounter a sample program with the TCPCONFIG macro 1 You can replace the TCPCONFIG macro with individual MY IP ADDRESS MY NETMASK MY GATEWAY and MY NAMESERVER macros in each program 2 You can leave TCPCONF IG at the usual default of 1 which will set the IP configurations to 10 10 6 100 the netmask to 255 255 255
88. thernet interface you will need the programming cable that has a blue shrink wrap around the RS 232 level converter Part No 20 101 0542 Other Rabbit programming cables might not be voltage compatible or their connector sizes may be different Connect the 10 pin PROG connector of the programming cable to header J3 on the BL2500 s RabbitCore module Ensure that the colored edge lines up with pin 1 as shown There is a small dot on the circuit board next to pin 1 of header J3 Do not use the DIAG connector which is used for monitoring only Connect the other end of the programming cable to a COM port on your PC Make a note of the port to which you connect the cable as Dynamic C will need to have this parameter configured Note that COMI on the PC is the default COM port used by Dynamic C NOTE Never disconnect the programming cable by pulling on the ribbon cable Carefully pull on the connector to remove it from the header D Seet i IH al Oo 4e tooomllooomi i Colored edge Ne To PC COM e KS Color Programming Cable shrink wrap lo OOOOOOOR Figure 4 Programming Cable Connections
89. thernet port to the Coyote s RJ 45 Ethernet connector Open this sample program from the SAMPLES TCPIP ICMP folder compile the program and start it running under Dynamic C When the program starts run ning the green LNK light on the Coyote should be on to indicate an Ethernet connection is made Note If the LNK light does not light you may not have a crossover cable or if you are using a hub perhaps the power is off on the hub The next step is to ping the board from your PC This can be done by bringing up the MS DOS window and running the ping program ping 10 10 6 100 or by Start Run and typing the command ping 10 10 6 100 Notice that the orange ACT light flashes on the Coyote while the ping is taking place and indicates the transfer of data The ping routine will ping the board four times and write a summary message on the screen describing the operation User s Manual 63 5 2 4 Running More Demo Programs With a Direct Connection The sample programs discussed in this section use the Demonstration Board from the BL2500 OEM2500 Development Kit to illustrate their operation Appendix C Demon stration Board Connections contains diagrams of typical connections between the Coy ote and the Demonstration Board used to run these sample programs The program SMPTP C SAMPLES BL2500 TCPIP uses the SMTP library to send an e mail when a switch on the Demonstration Board is pressed The program BROWSELED C SAMPLES BL250
90. this task for the SRAM s chip select signal line User s Manual 77 BA Power to Peripheral Cards DCIN and Vcc are available on friction lock connector terminals J7 and J8 to power peripheral cards that may be used with the Coyote Figure B 3 Pinout Friction Lock Connector Terminals J7 and J8 Keep in mind that the Coyote draws 377 mA from the Vcc supply and that the diode at D1 shown in Figure B 1 can handle at most A at Vpaw so that leaves the remaining current capacity to be shared among the DCIN and Vcc pins on friction lock connector terminals J7 and J8 Table B 1 lists the available current at DCIN based on the current drawn at Vcc Table B 1 DCIN Current Available at J7 and J8 in mA Based on Power Supply and Vcc 5 V Current Used at J7 and J8 Vgaw Power Supply Current at Vcc Input at J2 V 100 mA 200 mA 300 mA 400 mA 500 mA 600 mA 623 mA 8 0 545 450 355 260 164 69 47 8 5 574 484 395 306 216 127 107 9 0 599 515 431 347 263 178 159 10 641 566 490 415 340 265 248 12 703 641 579 517 455 393 378 18 805 764 723 682 642 601 591 24 855 824 794 763 733 703 696 30 884 860 836 811 787 763 750 40 913 895 877 859 841 823 819 78 Coyote BL2500 APPENDIX C DEMONSTRATION BOARD CONNECTIONS Appendix C
91. too high Figure 13 Schematic Diagram of A D Converter The A D converter programs DAO using a successive approximation binary search until DAO equals the A D converter input voltage That programmed DAO voltage is then reported as the A D converter value The A D converter transforms the voltage at DAO into a 13 2 mV window around DAO Because the A D converter circuit uses a 13 2 mV window the accuracy is 6 6 mV DAO can range from 0 1 V to 3 1 V which represents 227 steps of 13 2 mV This represents an accuracy of approximately 8 bits Since the D A converter is able to change the DAO out put in 3 22 mV steps there are 930 steps over the range from 0 1 V to 3 1 V This repre sents a resolution of more than 9 bits For example if DAO is 1 650 V the window in the A D converter would be 1 643 V to 1 657 V If ADO gt 1 657 V PB2 would read high and PB3 would read low If 1 643 V lt ADO 1 657 V PB2 would read low and PB3 would read low This is the case when the A D input is exactly the same as DAO If ADO 1 643 V PB2 would read low and PB3 would read high The A D converter input ADO is the same as DAO only when both PB2 and PB3 are low PB3 can be imagined to be a DAO voltage is too high indicator If DAO is larger than the analog voltage presented at ADO then PB3 will be true high If this happens the pro gram will need to reduce the DAO voltage User s Manual 23 PB2 can be imagined to be a DAO vol
92. ty ACT User programmable LEDs driven by the Rabbit 3000 e DSI PB6 yellow e DS2 PB7 red e DS3 PA7 yellow and e DS4 PA6 yellow are also provided 20 Coyote BL2500 3 3 Digital UO 3 3 1 Digital Inputs The Coyote has 16 digital inputs INOO IN15 INOO IN13 and INI15 are each protected over a range of 36 V to 36 V and IN14 is protected over a range of 36 V to 5 V The inputs are factory configured to be pulled up to 3 3 V INOO INO7 can also be pulled up to K or they can be pulled down to 0 V by changing a surface mounted 0 Q resistor Figure 10 shows a sample digital input circuit INOO INO7 and IN15 are protected against noise spikes by a low pass filter composed of a 22 kQ series resistor and a 10 nF capacitor Rabbit 3000 Microprocessor Figure 10 Coyote Digital Inputs Pulled Up Factory Default Coyote series boards can be made to order in volume with the digital inputs pulled up to K or Normal Switching pulled down to 0 V Contact your authorized Rab bit distributor or your sales representative at for FAV Cig more information SS The actual switching threshold between a zero and a one is between 0 9 V and 2 3 V for all 16 inputs 3 3 V4 INOO IN13 and IN15 are each fully protected over a range of 36 V to 36 V and can handle short spikes of 40 V IN14 is protected over a range of 36 V to 5 V 40 V spikas Digital Input Voltage
93. ute accuracy can be relied on The Coyote has such calibration Note that DAO is used to provide a reference voltage for the A D converter and is unavail able for D A conversion when the A D converter is being used 24 Coyote BL2500 Pulse width modulation PWM is used for the D A conversion The digital signal which is either 0 V or 3 3 V will be a train of pulses This means that if the signal is taken to be usually at 0 V or ground the pulses will be some 3 3 V pulses of varying width The voltage will be 0 V for a given time then jump to 3 3 V for a given time then back to ground for a given time then back to 3 3 V and so on A hardware filter that consists of a resistor and capacitor averages the 3 3 V signal and the 0 V signal over time Therefore if the time that the signal is at 3 3 V is equal to the time the signal is 0 V the duty cycle will be 50 and the average signal will be 1 65 V If the time at 3 3 V is only 25 of the time then the average voltage will be 0 825 V Thus the software needs to only vary the time the signal is at 3 3 V with respect to the time the signal is at O V to achieve any desired voltage between 0 and 3 3 V It is very easy to do pulse width modulation with the Rabbit 3000 microprocessor because the chip s architecture includes an advanced PWM feature 3 4 2 1 DAO and DA1 The RC networks supporting DAO and DAT converts pulse width modulated signals to an analog voltage between 0 V and 3 3 V
94. utput Configurable Low PC3 Input IN14 Pulled up to 3 3 V PC4 Output TXB SPI Inactive high Serial Port B DCH Input RXB SPI Inactive high PC6 Output TXA Programming Port Inactive high Serial Port A PC7 Input RXA Programming Port Inactive high PDO Output Realtek RSTDRV Inactive high PD1 Output Not Used High PD2 Output Ethernet High PD3 Output Ethernet High PD4 Output OUT4 Low PD5 Output OUTS Low PD6 Output Ethernet High PD7 Output Ethernet High PEO Output Not Used High PEI Input INOO Pulled up to 3 3 V PE2 Output Realtek AEN High PE3 Input INOI Pulled up to 3 3 V PE4 Input IN13 Pulled up to 3 3 V PES Input IN12 Pulled up to 3 3 V PE6 Input INO2 Pulled up to 3 3 V PE7 Input IN03 Pulled up to 3 3 V PFO Input IN15 Pulled up to 3 3 V PF1 Input Configurable Pulled up to 3 3 V PF2 Input INOS Pulled up to 3 3 V User s Manual 73 Table A 3 Use of Rabbit 3000 Parallel Ports continued Port UO Signal Initial State PF3 Input INO9 Pulled up to 3 3 V PF4 Input IN10 Pulled up to 3 3 V PF5 Input IN11 Pulled up to 3 3 V PF6 Output DAO High PF7 Output DAI High PGO Input IN04 Pulled up to 3 3 V PGI Input INOS Pulled up to 3 3 V PG2 Output TXF RS 232 High Serial Port F PG3 Input RXF RS 232 High PG4 Input INO06 Pulled up to 3 3 V PG5 Input INO7 Pulled up to 3 3 V PG6 Output TXE RS 232 High Serial Port E PG7 Input RXE RS 232 High
95. yote operating in the Run Mode This allows the programming port to be used as a regular serial port 3 6 1 Changing Between Program Mode and Run Mode The Coyote is automatically in Program Mode when the PROG connector on the pro gramming cable is attached and is automatically in Run Mode when no programming cable is attached When the Rabbit 3000 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 3000 in the Program Mode When the programming cable s PROG connector is not attached the SMODE pins are pulled low causing the Rabbit 3000 to operate in the Run Mode Program Mode Run Mode f oft TE 20000001 C E om b ooooocos C dellooomllooomiL Se ooom g l m 3 dos O Programming Cable uod WOO Od OL H neni 35 O kb ooooooon Flo 00000008 so ooooooom a amO or SE Do 000000 RESET BL2500 when changing mode Cycle power off on or short out RESET pads on other side of board after removing or

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