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ulink2 error: cannot access memory, cannot enter debug mode

Hi!

IÂ'm working on a project with the "Stellaris® Ethernet-enabled Intelligent Display Module with PoE RDK" (LM3S6918).

- Please do not matter about my English. I know it is not very well and IÂ'm really sorry about it. -

I tried to bring up a freeRTOS on my µC. I use the software KEIL and the ULINK2 JTAG - debugger and I transfered the program, the demo program, in my µC, however now it is down. It does not do anything anymore. I cannot even put another program on it. It is transfered, however, my µC does not do anything.

I have checked the errors which I get from Keil:

1. cannot access memroy
2. cannot enter debug mode

The first one occurrs when my JTAG - debugger, tries to access memory that is not physically there. Is not it so? However, what can I now? - I hope my µC is not broken down.

regards

Parents
  • hi,

    the Stellaris devices like to lock themselves without a reason, you can unlock them with the LMI Flash Tool when this happens.

    So, check if the device is accessible (i.e. by reprogramming it).

    Then you can try and select SW instead of JTAG.

    What target debugger are you using? Stellaris internal (lmiagdi.dll) or ULINK?

    BR,
    /th.

Reply
  • hi,

    the Stellaris devices like to lock themselves without a reason, you can unlock them with the LMI Flash Tool when this happens.

    So, check if the device is accessible (i.e. by reprogramming it).

    Then you can try and select SW instead of JTAG.

    What target debugger are you using? Stellaris internal (lmiagdi.dll) or ULINK?

    BR,
    /th.

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