EVK1000 USER MANUAL
Contents
1. 21 7 2 ON BOARD SWITCH FUNCTIONS e 22 7 2 1 7 2 2 S2 7 2 3 53 7 2 4 7 3 ON BOARD 2 PIN JUMPER FUNCTIONS eese riii ri riri ttt ttt ttt sisi sisi E EEE se si sisi sa sa sa sa sa sa sa sa sa sa sana 23 7 4 ON BOARD 3 PIN HEADERS WITH JUMPER FUNCTIONS eene rni rni raria rasis si sisi si sara rasa sisi sa sarai nana 24 12 FUNCTIONS orenen aea E 24 TAD 19 functions er dae aer Vra a Rex AE Pe AAE EAA AEE ANa 24 8 s siyenid M 25 DecaWave Ltd 2014 Version 1 07 Page 3 of 25 EVK1000 User Manual decaWave List of Tables TABLE 1 EXTERNAL REFERENCES AND PUBLICATIONS sssssssssecececssssseseesececseseseeseseceesssesneaesesececaesaaeesesececeeseseasesececessesanaesecsessnesaaess 5 TABLE 2 POWER OPTION Eisen 9 TABLE 3 OPERATIONAL MODES CONFIGURATION DETAILS scsscscccecsssesececcceceeseassesececeeseeessesececeeseeeeseseeeceeseseseeseeececsesesaeseeeeeceeseaaeas 10 TABLE 4 MAIN EVALUATION PARAMETERS OF INTEREST sssssssecccscesssaccecececseseeaeseceesceesesaeeeeececeeseaeeseseeeceseesasaeseeeesseeseeaeseeeeeseeaaaes 16 TABLE 5 FACTORS INFLUENCING COMMUNICATIONS RANGE cccceceesssscecececseseascecececeeseeesesecec2. 6 2 1 DESCRIPTION OF THE EVB1000 BOARD esee nnne nene nnn nennen sensn nenne sessi saei s ese se essa sese sese 2 2 ESSENTIAL ITEMS THAT ARE NOT PART OF THE KIT 2 3 OPTIONAL ITEMS THAT ARE NOT PART OF THE KIT 3 EVB1000 ON BOARD RANGING APPLICATION 3 1 INTRODUCTION Rr E 8 3 2 ANTENNA CONNECTION RT 8 3 3 POWERING THETEVBIQOO 8 3 4 EVB1000 FUNCTIONAL MODES ERE ER aa Ea ER KERN RE XR cenaenddadndss aad nase Senden 9 3 5 EVB1000 OPERATIONAL od en ash ano E TE EENE RE e DA 10 3 6 READY Ps 10 4 EVB1000 CONTROL WITH AN EXTERNAL APPLICATION 12 4 1 INTRODUGTION E 4 2 PC wot M 4 3 EXTERNAL APPLICATION CONTROL OF THE 1000 VIA THE USB INTERFACE J5 4 4 EXTERNAL APPLICATION CONTROL OF THE DW1000 VIA THE EXTERNAL SPI HEADER J6 4 5 EVB1000 OPTIONS WHEN USING DECARANGING PC APPLICATION 4 5 1 Using an external application to control both 100
3. decaWave EVK1000 USER MANUAL EVK1000 USER MANUAL HOW TO USE CONFIGURE AND INTERFACE TO THE DW1000 EVALUATION KIT This document is subject to change without notice DecaWave Ltd 2014 Version 1 07 Page 1 of 25 EVK1000 User Manual decaWave DOCUMENT INFORMATION Disclaimer DecaWave reserves the right to change product specifications without notice As far as possible changes to functionality and specifications will be issued in product specific errata sheets or in new versions of this document Customers are advised to check with DecaWave for the most recent updates on this product Copyright 2013 DecaWave Ltd LIFE SUPPORT POLICY DecaWave products are not authorized for use in safety critical applications such as life support where a failure of the DecaWave product would reasonably be expected to cause severe personal injury or death DecaWave customers using or selling DecaWave products in such a manner do so entirely at their own risk and agree to fully indemnify DecaWave and its representatives against any damages arising out of the use of DecaWave products in such safety critical applications 1 Caution ESD sensitive device Precaution should be used when handling the device in order to prevent permanent 4 lt damage REGULATORY APPROVALS This EVK1000 evaluation kit based on DecaWave s DW1000 IC is intended solely for use by competent engineering personnel for the purposes of
4. microcontroller or a PC to directly interface with the DW1000 SPI bus This is described in section 4 4 As the DW1000 is controlled an SPI interface any external controller wishing to control the DW1000 transceiver must use SPI for direct communication with the chip 44 Antenna 1 Connector WAKEUP R41 DNF 0 To a 3V6 DW1000 SUBSYSTEM R43 DNF 00 Oven SPI I F POWER SUBSYSTEM buds POWER computer SOURCE Always p SELECTION Connected ARM SUBSYSTEM 5 V DC input from USB J5 USB Connector Figure 10 Logical view of the EVB1000 42 DecaRanging PC application The on board DecaRanging application that comes pre programmed on the EVB1000 ARM microcontroller has an equivalent PC application which can be connected to the EVB1000 via the micro USB to control the DW1000 from a PC DecaWave Ltd 2014 Version 1 07 Page 12 of 25 EVK1000 User Manual Af decaWave The DecaRanging PC application is available from DecaWave The description of the DecaRanging application is beyond the scope of this manual and is described in Reference 1 43 External application control of the DW1000 via the USB interface J5 In this mode of control the on board USB to SPI application acts as a USB slave virtual COM port It translates the COM port commands into SPI transactions to
5. evaluating the use of DecaWave s DW1000 IC in wireless location and communications systems The EVK1000 as supplied from DecaWave has not been certified for use in any particular geographic region by any regulatory body governing radio emissions in such regions The EVK1000 is supplied under the following conditions e The distribution and sale of the EVK1000 is intended solely for use in future development of devices which may be subject to regulations or other authority governing radio emission e This EVK1000 may not be resold by users for any purpose e The EVK1000 as supplied by DecaWave may not be incorporated directly into user devices or products unless such products undergo the appropriate certification e Operation of the EVK1000 in the development of future devices is at the discretion of the user and the user bears all responsibility for any compliance with regulations laid down by the authority governing radio emissions in the user s jurisdiction All products developed by the user incorporating the DW1000 must be approved by the relevant authority governing radio emissions in a jurisdiction prior to the marketing or sale of such products in that jurisdiction User bears all responsibility for obtaining such approval If the user has obtained the EVK1000 for any purpose other than those listed above the user should return the EVK1000 to the supplier immediately FCC NOTICE This kit is designed to allow i product develo
6. power pre programmed mode on the EVK1000 is mode 1 This is not the lowest possible power consumption with the DW 1000 The various operating states of the DW1000 are described in detail the DW1000 data sheet and user manual and it is recommended that the user familiarize themselves with these various operating states their associated current consumptions and the various ways they can be used to minimize the power consumption of the DW1000 Using the EVK1000 with DecaRanging PC software is not power efficient because of the latencies involved in communicating with the PC This means that the DW1000 is in an active state for longer than would be necessary in an embedded environment Power consumption measurements made while a node is being controlled by PC based DecaRanging are not representative of power consumption in a real world application DecaWave Ltd 2014 Version 1 07 Page 18 of 25 EVK1000 User Manual A decaWave 6 TROUBLESHOOTING GUIDE e No ranging when using DecaRanging PC application with one EVB1000 and ARM application on the other EVB1000 o Make sure that the channel configuration settings in the DecaRanging PC application are identical to the mode used on the other EVB1000 o If channel configuration settings are the same but the Anchor does not report any TX frames a longer response time might be needed Further details are described in Reference 1 the ARM controlled EVB needs to have 51 2 in the O
7. the DW1000 To enable the USB to SPI application the EVB1000 needs to have the 51 switch 1 3 set to the off position on 51 off Figure 11 USB to SPI configuration DECAWAVE USB to SPI J5 USB Connector Figure 12 External application control using USB interface 44 External application control of the DW1000 via the external SPI header J6 In this mode of control the on board ARM processor is not used and it should be disabled and disconnected from the DW1000 SPI bus switch 51 and 52 should be all in the off position BO iud Figure 13 81 and S2 configuration for external application control through USB The pin out of the external SPI connection header J6 has been arranged to be compatible with that of the Cheetah series of SPI to USB converters provided by TotalPhase For more details on the external SPI connector pin out see section 7 Using one of these converters it is possible to control the DW1000 directly from a PC The DecaRanging PC application supports this operation further details are described in Reference 1 DecaWave Ltd 2014 Version 1 07 Page 13 of 25 EVK1000 User Manual A decaWave Cheetah header Figure 14 External application control using SPI external header Other microprocessor platforms may also be used to control the DW1000 An example using the Keil evaluation platform MCBSTM32C is shown below The ARM SPI1 bus is connected to the EVB1000 SPI header J
8. 0 units eese ener nnne nhan nn 4 5 2 Using one externally controlled EVB1000 with one on board controlled 1000 15 5 EVALUATING THE PERFORMANCE OF THE DW1000 USING THE 1000 16 5 1 INTRODUCTION 16 5 2 EVALUATING RANGE PERFORMANCE ccccccccecececececececececeseeeseseseseseseeeseseeeseseseseseeeseeeeeseseseseseseseseseseseseseseseseseseseseseneness 16 5 3 EVALUATING RANGING ACGURAGY 17 5 4 EVALUATING DW1000 POWER CONSUMPTION ccccccecccecerecececececececececeeecesesesesesesesesesesesesesesesesesesesesesesesecesesesesesesesess 18 6 TROUBLESHOOTING GUIDE ERU 19 7 EVB1ODOU BOARD DETAILS cerei ro este o edt sass UU 20 7 1 OFF BOARD CONNECTOR HEADERS EER 20 7 1 1 1 5 antenna connector sse enini aiii eei inn 20 742 J4 JTAG CONNC COM d 20 7 1 3 15 Micro USB conh ctor issu rere rete e PER E eR PESE RE RR 20 7 1 4 J6 External SPI connector 21 7 1 5 7
9. 00 Enables EVB1000 EVB1000 is not Enables different power powering from J6 powering from J5 powered configuration options In this mode the externally applied Voltage regulator is 19 supply is connected to disconnected Must be connected for the onboard circuitry EVB1000 is not EVB1000 power through a 3 3V voltage powered regulator DecaWave Ltd 2014 Version 1 07 Page 24 of 25 EVK1000 User Manual A decaWave 8 CHANGE HISTORY Revision 1 07 Page Change Description 10 17 Addition of note on which channels are calibrated during manufacture 17 Clarification of ranging accuracy evaluation using DecaRanging PC software available from DecaWave All Update of version number from 1 06 to 1 07 DecaWave Ltd 2014 Version 1 07 Page 25 of 25
10. 6 The DW1000 IRQ line is also connected to a GPIO of the ARM processor For more details on the external SPI connector pin out see section 7 SPI amp IRQ signals header Figure 15 External application control with Keil evaluation platform using SPI external header 45 EVB1000 options when using DecaRanging PC application The hardware setup necessary to allow you use your EVB1000 with the DecaRanging PC application is covered in section 4 of this manual There are two options 1 Using the external application to control both EVB1000 units 2 Using the external application to control one of the pair of the EVB1000 units DecaWave Ltd 2014 Version 1 07 Page 14 of 25 EVK1000 User Manual A decaWave 4 5 4 Using an external application to control both EVB1000 units In this configuration both of the two EVB1000s are controlled by the DecaRanging PC application further details are described in Reference 1 USB SPI amp USB power USB SPI amp USB Power Figure 16 Both EVB1000 s controlled by the external application 4 5 2 Using one externally controlled EVB1000 with one on board controlled EVB1000 In this configuration one of the two EVB1000s in the DecaRanging demonstration runs the DecaRanging application from the on board ARM microcontroller while the other EVB1000 is controlled from a PC which has DecaRanging Installed Two Hd rangin 9 Mes Sag es USB SPI a
11. ATION FIGURE 18 S1 51 2 AND S1 8 CONFIGURATION FOR THE LONGER RESPONSE TIME DecaWave Ltd 2014 Version 1 07 Page 4 of 25 EVK1000 User Manual decaWave 1 INTRODUCTION 1 1 Overview The EVK1000 consists of a pair of EVB1000 boards Each of the pair of EVB1000 boards is configured to run a pre programmed two way ranging demonstration application This DecaRanging application controls the DW1000 IC to exchange messages calculate the time of flight estimate the resultant distance between the two boards and display that result on the on board display Only external powering is required for this operation The boards may optionally be driven via USB interface using a PC version of the DecaRanging software as described in section 4 3 Alternatively an external micro controller system may drive the DW1000 IC directly through its SPI interface made available via the SPI header as described in section 4 4 In addition to demonstrating two way ranging this kit may be used to evaluate the following DW1000 features e range e ranging precision e transmit spectrum e power current consumption e multipath immunity e blocking immunity e antenna options It can also be used as a development platform for the DW1000 allowing you develop your own software and applications 1 2 Document Layout e Section 2 describes the contents of the EVK1000 kit e Section 3 describes the on board DecaRanging applicatio
12. CD SCREEN MESSAGES SHOWING SOFTWARE VERSION FIGURE 8 TAG AND ANCHOR POWER ON LCD MESSAGEGS ssssssssecccscsesesaesecccecseesassesececeeseaeseesecsceeseseesesecscessesesaeseeeesseeeaaeeeseeeceeees FIGURE 9 TAG ANCHOR RANGE DISPLAY csecceessecssceeseecssseecssecssseccssecsssescasecesseecasecsssecessecessescaeecssessesuecesseccauecesssecauecestecenseeenss FIGURE 10 LOGICAL VIEW OF THE o ER LER a en ana ea eara eo KR ea ER ra Ea FE pA KE Eo RASEN ERR FIGURE 11 USB TO SPI CONFIGURATION 2 iaeia FIGURE 12 EXTERNAL APPLICATION CONTROL USING USB INTERFACE sessssccccsceesesssecececeeseseseesececesseeeseseescecseseeaesecececeeeasaeseeeceeees FIGURE 13 S1 AND S2 CONFIGURATION FOR EXTERNAL APPLICATION CONTROL THROUGH USB sessi 13 FIGURE 14 EXTERNAL APPLICATION CONTROL USING SPI EXTERNAL HEADER c ssssessscecececeesesaeeececcceceeeesesecececeesueaesesececeeseeaseeseesenenea 14 FIGURE 15 EXTERNAL APPLICATION CONTROL WITH KEIL EVALUATION PLATFORM USING SPI EXTERNAL HEADER ee eene 14 FIGURE 16 BOTH EVB1000 s CONTROLLED BY THE EXTERNAL APPLICATION seeeeeee nennen i sse ne teras sans nni FIGURE 17 ONE EVB1000 CONTROLLED BY THE EXTERNAL APPLIC
13. FF position and 1 8 in the ON position on 5 Figure 18 51 51 2 and 51 8 configuration for the longer response time e LCD shows ERROR INIT FAIL message Check that all switches in S2 are in the ON position e Range reads 0 00 m press the reset button or disconnect and reconnect power Note To help investigate any potential issues the voltages on J2 and J3 should be either 3 3 V or 1 8 V after power up depending on which configuration is used as specified in Reference 2 The voltage on J9 should be 3 3 V DecaWave Ltd 2014 Version 1 07 Page 19 of 25 EVK1000 User Manual A decaWave 7 EVB1000 BOARD DETAILS This section gives further details of the EVB1000 including the pin outs of all connectors and the function of all the on board switches and Jumpers 7 1 Off board connector headers 7 1 1 J1 SMA antenna connector External antenna connector Table 6 J1 pin out Pin Function J1 Centre RF signal J1 Body Ground 7 1 2 JTAG connector The JTAG connector is intended for connection to an external ARM debug interface development toolset DIL Header 20 pin 0 1 pitch Table 7 J4 pin out Function Pin Pin Function VCC 1 2 VCC JTRST 3 4 GND J TDI 5 GND J TMS 7 8 GND J TCK 9 10 GND Pulled to GND resistor 11 12 GND J TDO 13 14 GND ARM_RESET 15 16 GND Pulled to GND resistor 17 18 GND Pulled to GND via 10
14. J5 USB connector Figure 3 EVB1000 power supply options DecaWave Ltd 2014 Version 1 07 Page 8 of 25 EVK1000 User Manual A decaWave Table 2 Power option settings J8 Power Source 7 Insert on pins The USB port to which you connect the EVB1000 should be capable nee 289 of supplying at least 250 mA In this mode the externally applied supply is indirectly connected to PONTO d 182 the on board circuitry through LDO regulator Changes to jumper settings should only be made with the board powered down under no circumstances should jumper settings be changed while power is applied to the board via any of the possible off board connectors or damage to the board may result For the two power source options the positions of the jumpers are shown in Figure 4 Jumpers J2 and J3 can be used to select whether sections of DW1000 are powered with 1 8 V or 3 3 V for more details on this operation see Reference 2 Jumper J10 can be used to measure the current consumption of DW1000 USB power source DC power source o o m Figure 4 USB DC 3 6V to 5 5V power source jumper connections 3 4 EVB1000 functional modes The on board DecaRanging application requires one unit to be configured as an Anchor and the other as a Tag These functional modes are controlled with switch 1 4 as indicated in Figure 5 1 51 4 ON EVB1000 configured as a
15. LED will illuminate to indicate that power is applied DecaWave Ltd 2014 Version 1 07 Page 10 of 25 EVK1000 User Manual decaWave You and now ready to begin using your EVK1000 ranging demonstration The two units will initialise and start the ranging exchange The messages you will see on the LCD screen during this process are shown in Figure 7 Figure 8 and Figure 9 below LED 5 will illuminate in Anchor mode whereas LED 6 will illuminate in Tag mode After a few moments the calculated range will be displayed on the LCD For more details on the DecaRanging application please consult Reference 1 DECAWAVE DECAWAVE RANGE Version X YY Version X YY Figure 7 EVB1000 power on LCD screen messages showing software version AWAITING AWAITING RESPONSE POLL Figure 8 Tag and Anchor power on LCD messages Figure 9 Tag Anchor range display DecaWave Ltd 2014 Version 1 07 Page 11 of 25 EVK1000 User Manual A decaWave 4 EVB1000 CONTROL WITH AN EXTERNAL APPLICATION 41 Introduction The EVB1000 has two configuration options which enable an external application to control the DW1000 These are 1 Using the USB connection J5 An external application e g DecaWave s DecaRanging PC application can use the on board USB to SPI application to control the DW1000 IC This is described in section 4 3 2 Using the external SPI header J6 This allows a software application running on an external
16. ation embedded DecaRanging application 7 2 2 S2 52 is a SPST 6 way switch Its various functions are described in the table below It disables the DW1000 SPI bus connections to the onboard ARM processor Table 12 S2 switch configuration descriptions Switch n on All On function Description function Disables ARM Enables ARM If the onboard ARM functionality is not required this S2 SPI connection SPI connection switch can be turned off to disable ARM SPI connection to to DW1000 to DW1000 the DW1000 DecaWave Ltd 2014 Version 1 07 Page 22 of 25 EVK1000 User Manual decaWave 7 2 3 S3 S3 is a SPST 4 way switch Its various functions are described in the table below Table 13 S3 switch configuration descriptions Switch Off function On function Description duties Ha m If used it allows ARM GPIO PAO pin to connect to DW1000 RSTn pin This allows ARM to reset the DW1000 53 1 PAO GPIO to PAO GPIO to hic chauldh h es oad ARM DW1000 RSTn DW1000 RSTn Iss ou e on when running the onboar application pin pin 53 2 Disables LED O Enables LED 0 Can be used to enable or disable LED O current consumption measurement Selects Selects This switch can be used to select DW1000 SPI mode it is 53 3 DW1000 SPI DW1000 SPI connected to DW1000 GPIO 5 pin For more information mode mode see Reference 2 Selects Selects This switch can be us
17. ed to select DW1000 SPI mode it is 53 4 DW1000 SPI DW1000 SPI connected to DW1000 GPIO 6 pin For more information mode mode see Reference 2 7 2 4 SW1 This is the ARM reset button Table 14 SW1 ARM reset button Switch Pressed Released Description Forces Allows ARM hardware reset rocessor to SW1 i 15 used to allow reset the ARM processor of ARM operate processor normally 7 3 On board 2 pin jumper functions Table 15 J10 function Jumper In Out Description Connects main Disconnects 3 3V power main 3 3V J10 from DW1000 power on Enables DW1000 power current measurement DW1000 DecaWave Ltd 2014 Version 1 07 Page 23 of 25 EVK1000 User Manual decaWave 7 4 On board 3 pin headers with jumper functions 7 4 4 J2 and J3 functions Table 16 J2 and J3 functions Jumper In pins 1 amp 2 In pins 2 amp 3 Out Description DW1000 uses t DC DC 2 DW1000 uses 3 3 V for For more information see 190000 VDDLDO as current disconnected saving option DW1000 uses external DC DC DW1000 VDDLDO2 3 DW1000 uses 3 3 V 1V8 supply for For more information see supply for VDDLDO2 VDDLDO2 as p Reference 2 disconnected current saving option 7 4 2 J8 and J9 functions Table 17 J8 and J9 functions Jumper In pins 1 amp 2 In pins 2 amp 3 Out Description 18 Enables EVB10
18. eeseeeeaeseesceeseseesesecececseseaaeseeeesceenaaes 16 TABLE ossi NT No TEE EI oj RR TT TABLES MICRO USB CONNECTOR PIN OUT 4 2225 c chia ico rho ra Kao RR na eso ERA FERE o ERR Ra SERA FE RR SERA CERO SERERE JEU SI uod E PH TABLE 10 J7 PIN OUT eese TABLE 11 S1 SWITCH CONFIGURATION DESCRIPTIONS TABLE 12 S2 SWITCH CONFIGURATION DESCRIPTIONS TABLE 13 S3 SWITCH CONFIGURATION DESCRIPTIONS TABLE 14 SW1 ARM RESET BUTTON eese TABLE 15 J10 FUNCTION TABLE 16 J2 AND J3 FUNCTIONS TABLE 17 J8 AND 9 FUNCTIONS FIGURE 1 1000 CONTENTS ccsseseecccececeeneseececececeenesesceceseeeeneneceeceseaeeneeeeeeeeees FIGURE 2 THE TWO SIDES OF THE EVB1000 SHOWING MAIN COMPONENTS FIGURE 3 EVB1000 POWER SUPPLY 5 enne nennen ness nnne rise FIGURE 4 USB AND DC 3 6V TO 5 5V POWER SOURCE JUMPER 9 FIGURE 5 SWITCH S1 4 TAG ANCHOR CONFIGURATION FIGURE 6 MODE CONFIGURATION FIGURE 7 EVB1000 POWER ON L
19. er data rates have longer range than higher data rates so to maximise range the lowest data rate 110 kbps should selected Generally speaking long range operation requires a long preamble length to give the receiver as long as possible to train to the incoming signal The preamble length needs to be chosen in conjunction with the data rate There is no point is using a Preamble length very long preamble with a fast data rate at long range because the receiver will not be able to receive the data irrespective of the length of the preamble However at slow data rates longer preambles give an increase in operating range To maximize range a slow data rate in conjunction with a long preamble 2048 should be chosen The pulse repetition frequency has a very small impact on communications range PRF with 64 MHz PRF giving marginally better performance than 16 MHz PRF As described in section 3 5 the EVK1000 has a number of preprogrammed modes of operation that are selectable via switch S1 The EVK1000 comes pre configured to Mode 3 This is the pre programmed mode of operation with the longest range It uses the lowest frequency pre programmed channel channel 2 the slowest data rate 110 kbps and the longest pre programmed preamble 1024 Even longer range is possible when using the external DecaRanging PC application to control both nodes as described in section 4 5 1 To achieve the maximum range possible b
20. kQ resistor 19 20 GND 7 1 3 45 Micro USB connector This is the micro USB connector Table 8 Micro USB connector pin out Pin Function J5 1 VSUB 5 VIN J5 2 USBDM to ARM GPIO PA11 DecaWave Ltd 2014 Version 1 07 Page 20 of 25 EVK1000 User Manual ad decaWave Pin Function J5 3 USBDP to ARM GPIO PA12 J5 4 ID to ARM GPIO PA10 J5 5 GND 7 1 4 J6 External SPI connector The external SPI connector is intended for connection to an external microcontroller or to a PC via a USB to SPI converter The pin out of has been arranged to be compatible with that of the Cheetah series of SPI to USB converters provided by TotalPhase DIL Header 10 pin 0 1 pitch Table 9 J6 Pin out Function Pin Pin Function SS2 1 2 GND SS33 3 4 IRQ fit R43 00 MISO SPI Data from PC d 5 6 SPI Clock from PC External Micro 7 8 MOSI SPI Data out to PC External Micro SS1 9 10 GND 7 1 5 J7 External DC supply Optional external DC power supply pin SIL 2 pin 0 1 pitch Table 10 J7 pin out Pin Function J7 1 GND Ground J7 2 VE DC supply can be from 3 6 V to 45 5 V DecaWave Ltd 2014 Version 1 07 Page 21 of 25 EVK1000 User Manual decaWave 7 2 On board switch functions 7 2 1 S1 51 is a SPST 8 way switch Its various functions are described in the table be
21. low Table 11 81 switch configuration descriptions Switch Off function On function Description Disables ARM Enables ARM If the onboard ARM functionality is not required this S1 1 booting booting switch can be turned off to disable ARM booting Disable fast Enable fast This switch is used to enable fast two way ranging with 51 2 the response time is set to 5 ms If turned off the ranging ranging response time is set to 150 ms Enable USB Disable USB to When switched off the USB to SPI application runs on the 51 3 SPI SPI onboard ARM to enable DecaRanging PC application to application application control the DW1000 Enable Enable DecaRanging Switches between on board DecaRanging Anchor and 51 4 DecaRanging 7 Tag functionality Tag function function S15 Operational Operational See EVB1000 operational modes for the functionality of mode selection mode selection this switch S1 6 Operational Operational See EVB1000 operational modes for the functionality of mode selection mode selection this switch S17 Operational Operational See EVB1000 operational modes for the functionality of mode selection mode selection this switch Disable remote Enable remote If enabled the DecaRanging PC application can be used 51 8 response time response time to modify the default 150 ms response time in configuration configur
22. mp USB power Figure 17 One EVB1000 controlled by the external application Make sure that the channel configuration settings in the DecaRanging PC application are identical to the mode used on the other EVB1000 DecaWave Ltd 2014 Version 1 07 Page 15 of 25 EVK1000 User Manual A decaWave 5 EVALUATING THE PERFORMANCE OF THE DW1000 USING THE EVK1000 5 1 Introduction There are three main parameters that evaluators of the DW1000 are typically interested in evaluating using the EVK1000 Table 4 Main evaluation parameters of interest Parameter Description What is the maximum range between the two nodes in the kit over which Communications range communications is successfully maintained and what operating mode yields that longest range What is the accuracy of ranging measurements between the two nodes in the kit Ranging accurac ging y and how does this vary with operating parameters What is the power consumption of the DW1000 in various modes of operation Power consumption what mode yields the lowest power consumption Each of these is examined individually in the following sections 5 2 Evaluating range performance To evaluate the range performance of the DW1000 the most widely used approach is to e First verify the line of sight LOS range where there is a clear line of sight between the two nodes Do this by leaving one node stationary and moving the
23. n e Section 4 describes using an external application to control the DW1000 on the EVB1000 e Section 5 is a brief troubleshooting guide e Section 7 provides detailed information on the functions and settings of all on board switches and jumpers and headers If you are in any doubt about how to perform any of the steps illustrated in this manual or you are unsure how to proceed please contact DecaWave sales decawave com and we will be happy to advise you 1 3 External References Table 1 External references and publications Reference Title Description 1 DecaRanging Demo Application PC User Guide 2 DW1000 Data Sheet 3 DW1000 User Manual DecaWave Ltd 2014 Version 1 07 Page 5 of 25 EVK1000 User Manual A decaWave 2 THE EVK1000 KIT DESCRIPTION The kit comprises 2 x EVB1000 boards e 2x Antennae 2x USB 2 0 cable 2 x Power leads e 1x Quick start guide 2 x Perspex stands 2 x Antenna 2 x EVB1000 2 x Power leads 2 x Micro USB cables Figure 1 EVK1000 contents Please contact DecaWave immediately if any of these items is missing from your kit 2 1 Description of the EVB1000 board The EVB1000 evaluation board measures 7 cm x 7 cm Its two sides identifying the main components are shown in Figure 2 The front side contains the LCD display which is used to show ranging information and the mode in which the board is operating the DIP switch 51 which all
24. n Anchor 2 51 4 to OFF EVB1000 configured as a Tag DecaWave Ltd 2014 Version 1 07 Page 9 of 25 EVK1000 User Manual decaWave on S1 off Figure 5 Switch S1 4 Tag Anchor configuration The EVK1000 by default has one of the boards configured in Anchor mode and the other in Tag mode Further details on each function can be found in Reference 1 3 5 EVB1000 operational modes The on board DecaRanging application supports a number of different operational modes These are chosen to demonstrate the DW1000 s performance in high speed short range and lower speed longer range applications these are described in detail in Reference 3 Table 3 below shows the supported configurations the default EVK1000 configuration as delivered is Mode 3 The mode setting is configured with the S1 switches 1 5 1 6 and S1 7 shown in Figure 6 below Table 3 Operational modes configuration details Preamble Non Channel Data Rate Preamble standard Code SFD ov on 7 S mowes im 9 These two modes are calibrated for transmit power and antenna delay during EVK production Other modes are not and may give ranging measurements that are slightly different to the physical values on 51 off Figure 6 Mode configuration selection 3 6 Ready to go Once you have configured the power supply method of your choice and the desired modes of operation and configuration the board can be powered
25. ntroller a suitable JTAG adaptor is needed e g ST microelectronics ST LINK V2 in circuit debugger programmer DecaWave Ltd 2014 Version 1 07 Page 7 of 25 EVK1000 User Manual A decaWave 3 EVB1000 ON BOARD RANGING APPLICATION 3 1 Introduction Each of the pair of the EVB1000 boards in the evaluation kit comes with a pre programmed two way ranging demonstration software application called DecaRanging This application controls the DW1000 IC to exchange messages calculate the time of flight and estimate amp display the resulting distance between two EVB1000 units To start running the DecaRanging demonstration please follow the steps described below 3 2 Antenna connection The supplied antenna should be connected to the SMA connector J1 shown in Figure 2 Best results will be achieved when the planes of the antennae at both ends of the radio link are parallel to each other It is also possible to use other commercially available UWB antennae with the EVB1000 For references and application advice please contact DecaWave 3 3 Powering the EVB1000 The EVB1000 can be powered either via an external DC power supply or battery through J7 using the supplied power cable leads or via a standard 5 V 500 mA USB power supply through J5 To change between the two jumper J8 is used as shown in the Figure 3 J1 Antenna Connector DW 1000 SUBSYSTE J7 DC 3 6V to 5 5V ARM SUBSYSTEM 5V DC input from USB
26. oth nodes should be configured to channel 1 3 5 GHz center frequency 2048 preamble 64 MHz PRF and 110 kbps data rate In a custom design using the DW1000 it is possible to further extend the range by making various choices in terms of hardware configuration including the use of TCXO clock sources antennas with gain and so on Please consult the DW1000 data sheet and DW1000 user manual for further information 5 3 Evaluating ranging accuracy In order to precisely determine the ranging accuracy of the DW1000 it is necessary to adopt a systematic approach to the evaluation The process normally used by DecaWave to do this is to place the two nodes at a known physical distance apart take multiple measurements using the logging function in DecaRanging PC software which is available on registration of your kit typically up to a 1000 ranges per physical distance plot those measurements and calculate the mean and standard deviation of the measured values This process can be repeated for as many physical distances as are required for the intended application The logging function in the PC based DecaRanging software can be useful for the recording of data from multiple ranging exchanges Note The EVK1000 has been calibrated during production in modes 3 amp 5 only This means that the transmit power level and antenna delay have been calibrated correctly for those modes See Ref 2 and 3 for further explanations of these two items All o
27. other node away from it until ranging updates stop e Then investigate the non line of sight NLOS performance by introducing various obstructions between the two nodes A more systematic approach can be adopted using the PC base DecaRanging software and monitoring the error counts as described in the DecaRanging user manual as the distance between the nodes is increased There are a number of factors that influence communications range These are described in detail in the DW1000 data sheet amp user manual so it s not necessary to go into them in great detail here In summary Can Say Table 5 Factors influencing communications range Influencing factor Effect Channel center Lower frequencies propagate further than higher frequencies so to maximise range frequency the lowest possible channel frequency should be selected Channel 1 3 5 GHz A wider channel bandwidth allows more energy to be transmitted into the channel than a narrower bandwidth To maximise range the widest channel bandwidth should be used In reality in the DW1000 because the first wideband channel is at 4 GHz while the lowest frequency channel is at 3 5 GHz the benefit due to the increased bandwidth at 4 GHz is offset by the higher center frequency and better results are achieved at channel 1 Channel bandwidth DecaWave Ltd 2014 Version 1 07 Page 16 of 25 EVK1000 User Manual A decaWave Influencing factor Effect Low
28. ows the user to set the mode of operation of the EVB1000 and there are also a number of LEDs The rear side contains the DW1000 IC the ARM IC the ARM reset button two DIP switches 52 and 53 the JTAG connection header the external SPI connection header and various jumpers and power connectors for configuring the input powering mode More details on all of these components are contained in section 7 DecaWave Ltd 2014 Version 1 07 Page 6 of 25 EVK1000 User Manual A decaWave EMT ve didi ei LLL 99 010 oo la 20 am oo T joe EI LED E 1 T oB 6 8 Qf Figure 2 two sides of the EVB1000 showing main components 2 2 Essential items that are not part of the kit The following items are not included in the EVK1000 as delivered and are required to operate the kit 1 Power supply No power supply units are supplied The boards may be powered from a bench power supply using the supplied power supply leads or via a USB power source using the supplied USB cables These options are described in section 3 3 2 3 Optional items that are not part of the kit The following items are not included in the EVK1000 as delivered and may be required for further application development using the EVK1000 1 JTAG interface module In order to reprogram the on board ARM Cortex microco
29. pers to evaluate electronic components circuitry or software associated with the kit to determine whether to incorporate such items in a finished product and ii software developers to write software applications for use with the end product This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained Operation is subject to the conditions that this device not cause harmful interference to licensed radio stations and that this device accept harmful interference Unless the assembled kit is designed to operate under Part 15 Part 18 or Part 95 of the FCC Rules the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under Part 5 of the FCC Rules DecaWave Ltd 2014 Version 1 07 Page 2 of 25 EVK1000 User Manual decaWave Table of Contents 1 INTRODUCTION eeE 5 1 1 OVERVIEW e 5 1 2 DOCUMENTILAY OUT 5 1 3 9 2i eccL eer ore ar beh Cea bere a Ia DA VERE Pea RUE XR EUR AER Fe A X IRL La SERE ER EE Ee DA VERE IRL EL ERTE Lad 5 2 THE EVK1000 KIT DESCRIPTION ics 52 e eoe obe Eo Sea Serve coe go yeu esser anctesesencsisorescoeTe goa e sisi
30. ther modes are un calibrated To achieve best possible range and ranging accuracy performance in those other modes it may be necessary to calibrate the EVK1000 Ref 3 provides general information on how to do this DecaWave Ltd 2014 Version 1 07 Page 17 of 25 EVK1000 User Manual decaWave 5 4 Evaluating DW1000 power consumption The EVB1000 has been designed to allow the user to measure the current consumed by the DW1000 while operating The supply to the DW1000 section of the EVB1000 has been isolated from the supply to the remainder of the board and these two sections are connected via a jumper at J10 When operating the EVB1000 normally a jumper is inserted at J10 to connect these two parts of the circuit together In order to measure the current consumption of the DW1000 then it is necessary to remove the jumper at J10 and either 1 Connect Ammeter directly across the two pins of J10 or 2 Connecta low value resistor across the pins of J10 typically this would be in the region of 0 5 to 1 Ohm and use a Voltmeter across that resistor to derive the current passing through it Unless a sophisticated instrument is used in the measurement process that can record currents voltages in real time to a resolution of microseconds then the current measured using the methods above will be the average operating current Current consumption of the DW1000 is very dependent on the operating state of the device The lowest
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