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Cortex-R5 target cannot be stopped

James.sun

After DS-5 connected to target, "Debug Control" tab shows "Cortex-R5_0#1 running", but "Commands" tab shows

"ERROR(TAD9-NAL30):
! Unable to stop device Cortex-R5_0
! Cannot stop target."

in response to "stop" cmd. Any idea about it? what issue usually causes this? 

Thanks

James

Parents
  • 0 in reply to Kaiyou Wang

    Hi Kaiyou,

    I am using ARM DS 2021.2 and DSTREAM ST as debugger probe, on a real chip, and is my first time to use an ARM debugger to talk to it, and it happens 100%.  It was set as "connect only" and "stop" is the only cmd in "execute debugger commands" box.  I have captured daplog and will send it to you.  Thanks for help! 

Reply
  • 0 in reply to Kaiyou Wang

    Hi Kaiyou,

    I am using ARM DS 2021.2 and DSTREAM ST as debugger probe, on a real chip, and is my first time to use an ARM debugger to talk to it, and it happens 100%.  It was set as "connect only" and "stop" is the only cmd in "execute debugger commands" box.  I have captured daplog and will send it to you.  Thanks for help! 

Children
  • +1 Arm Employee Badge in reply to James.sun

    Hi James,

    Thanks for your log. I can see the debugger has already try to halt the processor by write 1 to the DBGDRCR[0], but the Core doesn't give response, I suspect the Core already hangs when the debugger connected. I suggest you to connect more earlier or look at your code flow, generally hang causes from peripherial device access.