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rk-wi.m868x-r user?s manual revision 1.0.0
rk-wi.m868x-r user?s manual 1 radiotronix, inc. rk-wi.m868x-r user?s manual ? radiotronix 905 messenger lane moore, oklahoma 73160 phone 405.794.7730 ? fax 405.794.7477 www.radiotronix.com
rk-wi.m868x-r user?s manual 2 document control signed date created by trm 12/15/2004 engineering review marketing review tje 6/13/2007 approved- eng. approved- mar. tje 6/13/2007 revised history revision signed date description 1.0.0 trm 12/15/2004 document created.
rk-wi.m868x-r user?s manual 3 table of contents 1. description .................................................................................................................... ......................... 5 2. development kit set up.......................................................................................................... ............. 6 3. using the rk-wi.m868x-r tm evaluation software .................................................................... 7 3.1. com p ort s etup and s election ........................................................................................................... 7 3.2. w ireless c hat p age .............................................................................................................................. 7 3.3. n on -v olatile r egister p age ................................................................................................................ 8 3.4. v olatile r egister p age ........................................................................................................................ 9 4. using the evaluat ion software .................................................................................................. 10 4.1. s etting r egister v alues .................................................................................................................... 10 4.1.1. transceive r m ode ............................................................................................................... ............ 10 4.1.2. transmit diagnost ic ............................................................................................................ ............ 10 4.1.3. receive diagnostic ............................................................................................................. ............ 10 5. notes.......................................................................................................................... .............................. 11 5.1. m icrosoft / h ilgraeve h yper t erminal ............................................................................................... 11 5.2. l oopback m ode ............................................................................................................................... ..... 11 6. pcb layout diagrams............................................................................................................ ............ 12 6.1. rk-wi.m868x-r tm e valuation b oard l ayout .................................................................................... 12 6.2. wi.m868x-evm-r tm e valuation m odule l ayout ............................................................................... 13 6.3. wi.m868x-evm-r tm m odule p in o ut .................................................................................................. 14 6.3.1. pin descr iptions ............................................................................................................... ............... 14 7. schematic diagrams............................................................................................................. ............. 15 7.1. wi.m868x-evm-r tm s chematic d iagram ............................................................................................ 15 7.2. rk-wi.m868x-r tm e valuation b oard s chematic d iagram ............................................................... 16 8. custom appl icatio ns ............................................................................................................ ............ 17 9. ordering in formation ........................................................................................................... ........... 18 9.1. c ontact i nformation .......................................................................................................................... 18 9.1.1. technical support .............................................................................................................. ............. 18 9.1.2. sales support.................................................................................................................. ................ 18
rk-wi.m868x-r user?s manual 4 index of tables table 1, pin descriptions ...................................................................................................... .............................. 14 table of figures figure 1: com port setup ....................................................................................................... .............................. 7 figure 2: wire less chat ........................................................................................................ ................................. 8 figure 3: non-volat ile register page........................................................................................... ......................... 8 figure 4: volatile register page............................................................................................... ............................. 9 figure 6: rs- 232 jumpers ....................................................................................................... ........................... 11 figure 7: evaluat ion board layout .............................................................................................. ........................ 12 figure 8: evaluati on module layout............................................................................................. ....................... 13 figure 9: wi.m868x-evm-r tm schematic diagram............................................................................................ 15 figure 10: rk-wi.m868x-r tm evaluation board sc hematic diagram................................................................ 16
rk-wi.m868x-r user?s manual 5 1. description the rk-wi.m868x-r tm is a rapid-development/evaluation kit for the wi.m868x data transceiver. included in the kit is: ? 1 ? development case ? 1 ? development utility and documentation cd ? 2 ? development boards ? 2 ? wi.m868x-evm-r tm modules (pinned) ? 2 ? 868 mhz antennas ? 2 ? rs-232 cables ? 2 ? usb cables ? 6 ? aaa batteries ? quick start guide ? datasheet/ user?s manual hard copy (optional) * datasheet/ user?s manual is pr ovided on the documentation cd. chapter 1
rk-wi.m868x-r user?s manual 6 2. development kit setup ? insert the aaa batteries into the evalua tion pcb, observing t he correct polarity. ? insert a wi.m868x-evm-r tm module into one of the evaluation boards, observing the correc t orientation (see later in this document). the correct orientation of the module is with the antenna connector closest to the edge of the evaluation boar d. make sure it is seat ed fully and correctly. ? insert the other wi.m868x-evm-r tm module into the other evaluation board, also observing the correct polarity. ? connect antennas to wi.m868x-evm-r tm modules. ? connect evaluation boards to computers. if using usb communications, populate usb jumpers and remove rs-232 jumpers. if using rs-232 communications, populate rs-232 jumpers and remove usb jumpers. ? install the rk-wi.m868x-r tm windows software. if already installed, skip this step. ? run the rk-wi.m868x-r tm software, select 2400 baud operation and navigate to the ?wireless chat? tab. ? power-on both evaluation boards, verifying that th e version/copyright information is echoed to the screen from both modules. ? chat back and forth between evaluation boards, verifying that serial and rf communications are successful. important note for hyperterminal users : see section 4.1 chapter 2
rk-wi.m868x-r user?s manual 7 3. using the rk-wi.m868x-r tm evaluation software the software supplied with the rk-wi.m868x-r tm development kit is used to read and set the volatile and non- volatile registers with the wi.m868x-r tm module. refer to the wi.m868x-r tm users manual for more information on the register settings. 3.1. com port setup and selection upon starting the rk-wi.m868x-r tm evaluation software, you will be presented with a com port selecti on dialog box. if you are using the usb interface, make sure that the evaluation board is already connected to the computer via the usb cabl e before you start the so ftware. this will ensure that the virtual com port which is assigned to the usb to uart bridge controller by windows is visible in the com port selection list. the first time you start the rk-wi.m868x-r tm evaluation software, the baud rate should be left at 2400 baud, since this is the factory default baud rate setting for the module. tip: the rk-wi.m868x-r tm evaluation software does not auto detect the baud rate of the module. if you have changed the non-volatile data rate register, you will have to select the ba ud rate you set this register to when you start the rk-wi.m868x-r tm evaluation software. figure 1: com port setup 3.2. wireless chat page the wireless chat page in the rk-wi.m868x-r tm evaluation software demonstra tes the capability of the wi.232 tm to be used as a wireless communications link. the rapid development kit works as a wireless chat link with no register changes required, out of the box. chapter 3
rk-wi.m868x-r user?s manual 8 to use wireless chat: type a message in the lower text field and press enter. the text you typed will be displayed on the remote system, prefixed with a node identifier if you specified one. figure 2: wireless chat 3.3. non-volatile register page the non-volatile register page in the evaluation software allows you to change the default settings which will be loaded when the module is powered on. it is important to note that data rates in excess of 19.2kbps cannot be achieved in lp mode due to bandwidth limitations. tip: if you change the non-volatile data rate setting, you will have to select the baud rate you set this register to when you start the rk- wi.m868x-r tm evaluation software. figure 3: non-volatile register page
rk-wi.m868x-r user?s manual 9 3.4. volatile register page in this page, you can change the volatile settings of the module. values programmed into these registers are lost of power- down. the page also provides a means of switching the receiver and transmitter on and off, setting receive and transmit channels, transceiver mode and modulation settings. tip: it is important to note that data rates in excess of 19.2kbps cannot be achieved in lp mode due to bandwidth limitations. figure 4: volatile register page
rk-wi.m868x-r user?s manual 10 4. using the evaluation software 4.1. setting register values on both the volatile and non-volatile pages, the registers are labeled by function. to set a register value, select the value from the options available for that register an d click the ?write? button. to perform a read of that register, simply click the ?read? button. descriptions of the register functions can be found in the wi.m868x-r tm users manual. 4.1.1. transceiver mode this selects the modulation mode and power output of both the transmitter and receiver. the mode is not set until ?set tx diag? or ?set rx diag? is pressed. if ?set rx diag? is pressed, the power output value is ignored. 4.1.2. transmit diagnostic transmit diagnostic consists of four radio buttons wh ich select the transmit channel. low, mid and high are quick reference buttons which can be used to select the lowest, the middle, or the highest channel. any specific channel can be selected by using t he controls below the ?set tx diag? button. the ?set tx diag? button switches the transmitter on using the channel and mode selected in the channel selector and transceiver mode controls. a ??1010101010101?? bit pattern is transmitted for bit error testing with another system or rf carrier analysis. 4.1.3. receive diagnostic receive diagnostic consists of four radio buttons whic h select the transmit channel. low, mid and high are quick reference buttons which can be used to select the lowest, the middle, or the highest channel. any specific channel can be selected by using t he controls above the ?set rx diag? button. the ?set rx diag? button switches on the receiver using the channel and mode selected in the channel selector and transceiver mode controls. additiona lly, the module enters the diagnostic bit error test. if a ??1010101010101?? bit pattern is received at the frequency and baud rate set up in the relevant registers, the ber test will return th e number and percent of bit errors. this information is displayed in the panel below the ?set rx diag? button. if no transmission is present, or the transmission is at the wrong frequency or data rate, the module may enter an infinite loop waiting for the beginning of the data. in this case, the module should be powered down and back up to return the module to its normal operating mode. chapter 4
rk-wi.m868x-r user?s manual 11 5. notes 5.1. microsoft/ hilgraeve hyperterminal the rk-wi.m868x-r tm evaluation kit can be used with hyperterm inal to receive and transmit rs-232 data and send files using file transfer protocols such as zmodem. hyperterminal and many other terminal programs assert rts by default. on the evaluation board, the rts line is tied to the cmd pin on the module. when the cmd pin is held low, which is the case when the rts line is asserted; the module will be placed in command mode. in command mode, all uart data sent to the modusle will be interpreted as commands and will not be sent to the rf engine for transmission. additionally, if an evaluation board is switched on in the presence of an asserted rts line, it will perform a full hardware and flash reset to the factory defaults. to use the evaluation board with hyperterminal or ot her terminal program, you must first remove the jumpers from pins 7+8 of jp2, if you are using an rs -232 connection to your pc, or jp3, if you are using a usb connection to your pc. removing this jumper wi ll disconnect the rts line from the cmd pin on the module, allowing normal operation. 5.2. loopback mode the rk-wi.m868x-r tm kit can be operated in a loopback mode by configuring the com jumpers in such a way as to link together the txd and rxd lines to and fr om the module in the remote evaluation board. using this mode, the user can send data from their local evaluation board and have it re-transmitted back to them by the remote evaluation board. the maximum baud rate allowed in loopback mode is 38400 baud for point to point communications only. loopback mode using the rs232 jumpers: figure 5: rs-232 jumpers chapter 5
rk-wi.m868x-r user?s manual 12 6. pcb layout diagrams 6.1. rk-wi.m868x-r tm evaluation board layout figure 6: evaluation board layout chapter 6
rk-wi.m868x-r user?s manual 13 6.2. wi.m868x-evm-r tm evaluation module layout jp1 pin 1 jp2 pin 1 figure 7: evaluation module layout note: pin 1 of the wi.232dts-fcc-r module?s jp2 aligns with pin 1 of jp6 on the evaluation board. the following table lists the pin numbers and their assignments.
rk-wi.m868x-r user?s manual 14 6.3. wi.m868x-evm-r tm module pin out 6.3.1. pin descriptions table 1, pin descriptions pin name pin description jp2 pin 1 4v to 12v vdd jp2 pin 2 rxd0, wi.m868x-r tm rxd pin jp2 pin 3 txd0, wi.m868x-r tm txd pin jp2 pin 4 cts0, wi.m868x-r tm cts pin jp2 pin 5 cmd (active low), wi.232dts cmd pin jp2 pin 6 rxd1 ? reserved for future ? no connect jp2 pin 7 txd1 ? reserved for future ? no connect jp2 pin 8 rts1 ? reserved for future ? no connect jp2 pin 9 dtr1 ? reserved for future ? no connect jp2 pin 10 dtr1* - reserved for future ? no connect jp2 pin 11 gnd jp2 pin 12 gnd jp1 pin 1 gnd jp1 pin 2 gnd jp1 pin 3 ad1 ? reserved for future ? no connect jp1 pin 4 ad0 ? reserved for future ? no connect jp1 pin 5 rssi ? reserved for future ? no connect jp1 pin 6 pd5 ? reserved for future ? no connect jp1 pin 7 pd4 ? reserved for future ? no connect jp1 pin 8 pd3 ? reserved for future ? no connect jp1 pin 9 pd2 ? reserved for future ? no connect jp1 pin 10 pd1 ? reserved for future ? no connect jp1 pin 11 gnd jp1 pin 12 gnd
rk-wi.m868x-r user?s manual 15 7. schematic diagrams 7.1. wi.m868x-evm-r tm schematic diagram figure 8: wi.m868x-evm-r tm schematic diagram chapter 7
rk-wi.m868x-r user?s manual 16 7.2. rk-wi.m868x-r tm evaluation board schematic diagram figure 9: rk-wi.m868x-r tm evaluation board schematic diagram
rk-wi.m868x-r user?s manual 17 8. custom applications for cost-sensitive applications, such as wirele ss sensors and amr, radiotronix can embed the application software directly into the microcontroller bu ilt into the module. for more information on this service, please contact radiotronix. chapter 8
rk-wi.m868x-r user?s manual 18 9. ordering information product part number description rk-wi.m868x-r development kit wi.m868x-evm-r evaluation module 9.1. contact information corporate headquarters: 905 messenger lane moore, oklahoma 73160 405-794-7730 website: www.radiotronix.com support: support@radiotronix.com 9.1.1. technical support radiotronix has built a solid technical support infrastructure so that you can get answers to your questions when you need them. our primary technical support tools are the support forum and knowledge base found on our website. we are continuously updating these to ols. to find the latest information about these technical support tools, please visit http://www.radiotronix.com/support . our technical support engineers are available mon-fri between 9:00 am and 5:00 pm central standard time. the best way to reach a technical support engineer is to submit a webcase. webcase submissions can be made at http://www.radiotronix.com/support/webcase.asp . for customers that would prefer to talk directly to a support engineer, we do offer phone support free of charge. 9.1.2. sales support our sales department can be reached via e-mail at sales@radiotronix.com or by phone at 405-794- 7730. our sales department is available mon-fri bet ween 8:30 am and 5:00 pm central standard time. visit our web site at http://www.radiotronix.com/corpsales.asp for information on where to buy our products. chapter 9

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