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Spy-Bi-Wire Problem with MSP-TS430RSB40

dina elsissy
Prodigy 30 points
Other Parts Discussed in Thread: MSP-TS430RSB40, MSP430F5172

Hi,

I'm wondering if anyone can help me with this:

I'm using TI evaluation board MSP-TS430RSB40 with microcontroller MSP430F5172 and I'm trying to connect it to another TI board MSP-EXP430G2 through Spy-Bi-Wire mode I connected the Test pin in EXP430G2  to pin 32 of MSP430F5172  and RST pin to pin 33. I've also set jumpers JP4 to JP9 to position 1-2.

I can't see what's missing. Any help is appreciated.

Thanks in advance.

  • 0
    Genius 3370 points

    The Spy-by-Wire interface is a JTAG interface. One device needs to be running Spy-By-Wire JTAG master code in order to use this as a communication link. In general a JTAG interface uses a complex protocol that has specific requirements. The Spi\y-By-Wire interface is even more complex because it uses only two signal wires and each signal has multiple functions. If you are trying to create a communication link between the two boards, it would be much easier to use the serial UARTs.

  • 0
    TI__Guru 68116 points

    Hi dina,

    I'm not sure if the launchpad emulator is going to support the F5172, but if you were using one launchpad board to program a second launchpad board, here's what you'd need to do:

    In addition to RST and TEST, one thing you need to do is connect your VCC from the launchpad to the target board and connect gnd between the two boards, and you should be powering the target board off of the vcc from your programming launchpad, not externally from a battery or some other source. Also make sure that you are connecting the pins on the emulation side (the pins above the dotted line on J3, not below) of the programming launchpad to the correct pins on the target.

    I want to stress though that the launchpad emulator firmware is not guaranteed to support parts outside the G2xx family, so you may be running into a problem because of this. The best way to program your MSP430F5172 target board is to use the MSP-FET430UIF.

    Regards,

    Katie

  • 0 in reply to Katie Pier
    Prodigy 30 points

    Hi everyone,

    Thanks for your help. The problem turned out to be that I wasn't  connecting the pins on the emulation side. It's now working fine.

    Many thanks,

    Dina

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