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MSP430F2003 SPy Bi Wire

Hi Experts,

Is it possible to use the Spy-Bi-Wire interface to communicate with the MSP430 when user application code is being executed by the MSP430? We were hoping to be able to use the Spy-Bi-Wire interface to not only perform the initial flash programming of the MSP430, but to also send custom commands to the MSP430 for calibration purposes.

 

thanks and best regards,

Wajdi

  • Wajdi said:

    Is it possible to use the Spy-Bi-Wire interface to communicate with the MSP430 when user application code is being executed by the MSP430? We were hoping to be able to use the Spy-Bi-Wire interface to not only perform the initial flash programming of the MSP430, but to also send custom commands to the MSP430 for calibration purposes.

    Yes, it is possible on MSP430x5xx devices using mailbox system to exchange information with target device using SBW / JTAG while the target device is in free running mode.

  • The 5x family JTAG interface supports a JTAG MESSAGE mechanism. But I don't know of any frontend on the PC side.

    besides this, the FET can of course inject data into MSP memory by halting the CPU and controlling the memory bus. When the CPU is reactivated, the application may detect this and act accordingly. But again, I don't know of an available frontend for this (other than the debugger)