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MSP430FR5847IRHAT, how to switch JTAG debug core very fast

Frantisek Zabecky
Expert 1990 points
Other Parts Discussed in Thread: MSP-GANG

Hello,

I would like to ask you if there exist possibility to stop the core using a very short sequence of JTAG instructions. The sequence of JTAG instruction (from appropriate programming specification) we use till now takes too long time, so the application code in Flash can start and rewrite the Flash.

Thank you in advance.

Best regards,

Frantisek

  • 0
    TI__Guru 56685 points
    Hello Frantisek,

    Can you clarify what exactly you are looking for here?

    Are you wanting to program the MSP via JTAG at a faster rate? If so, please checkout our MSP-GANG programmer. It is used for production programming and is able to program MSPs at a faster rate.

    If you are trying to stop MSP execution during debug at a faster rate, then I would suggest using some of the advanced debug techniques and triggers outlined in the following: www.ti.com/lit/slaa393

    If you are just trying to halt the CPU using the pause button during debug, there is no real way to perform this action quicker.

    Regards,
    JH
  • 0 in reply to Jace H
    Expert 1990 points

    Hello JH,

    I'm looking for an information if there is possible to halt CPU after reset before executing any instruction from programmed application. If it is possible, what commands sequence we should issue into the device.

    Best regards,

    Frantisek

  • 0 in reply to Frantisek Zabecky
    TI__Guru 56685 points

    Franktisek,

    If you are in debug mode in CCS, you can do this via breakpoints in the beginning of your code.

    Otherwise, you may find what you are looking for within the following application note.

    www.ti.com/lit/slau320

    Regards,

    JH

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