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CC2541: How to attach to a running target ?

Brahmesh Jain26
Prodigy 50 points
Part Number: CC2541


I am trying to chase down a bug that happens on a target that is not attached to a debugger, so I would like to attach at a later point to be able to debug it. Like halt a running CPU and copy the contents of RAM, and registers.

According to the TI's documentation, the minimum connection required to be able to debug CC2541 are DC, DD, RST, VDD and GND.

IAR Embedded workbench doesn't have this option.

Is there a way I can achieve this ? 

  • 0
    TI__Genius 9215 points

    Hi,

    You can use Debug without Downloading in IAR to connect to a running target:

    Best Regards,

    R.M

  • 0 in reply to R.M
    Prodigy 50 points

    I tried this method, IAR Embedded studio throws this error when I remove the reset line connection to the target.

    I think the Embedded studio is trying to reset the target when I click on the "Debug without Downloading".

    Here is the communication log from IAR studio.

    Reset(resetForDebug=1)
Reset(resetForDebug=1)
ReadConfig(*pConfig=0xFF) = 1
WriteConfig(config=0xFB) = 1
ReadXdataMemory(address=0x6249, count=1, pProtection=0x00000000)
ReadXdataMemory(address=0x6276, count=2, pProtection=0x00000000)
ReadStatus(*pStatus=0xFF) = 1

  • 0 in reply to Brahmesh Jain26
    TI__Genius 9215 points

    Hi,

    I'm afraid it is not possible to connect to running target without reset of the CC2541 first. On CC2541 debug mode is entered by forcing two falling-edge transitions on the DC pin while RST pin is held low.

    Does the bug not happen when running in debug mode?

    Best Regards,

    R.M   

  • 0 in reply to R.M
    Prodigy 50 points

    No, the Bug doesn't happen when debugging. Or I should say we don't know how to reproduce this bug, but we have some samples which are in this state and want to pause the code execution and look at the contents on the CC2541. I know we can do this on the CC2640R2, but didn't know this is not possible on CC2541.

    Thanks for the confirmation.

    Brahmesh

  • 0 in reply to Brahmesh Jain26
    TI__Genius 9215 points

    Hi,

    Yes for CC2640R2 you can do this on ARM IAR but unfortunately not for CC2541 and 8051 IAR.

    Best Regards,

    R.M