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Thread: Locked Aurix 23x

  1. #1
    New Member New Member MartinR is on a distinguished road
    Join Date
    Apr 2016

    Locked Aurix 23x


    I tried to set BMHD0 and BMHD1 of Aurix TC23x. For this purpose I wrote Lauterbach Trace32 script

    ; Set BMHD0
    Data.Set 0xA0000000++0x17 %Long 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
    Data.SUM 0xA0000000++0x17 /Long /ByteSWAP /CRC32
    Data.Set 0xA0000018 %Long Data.SUM()
    Data.Set 0xA000001C %Long ~Data.SUM()

    ; Set BMHD1
    Data.Set 0xA0020000++0x17 %Long 0xA0080900 0xB3590160 0x00000000 0x00000000 0x00000000 0x00000000
    Data.SUM 0xA0020000++0x17 /Long /ByteSWAP /CRC32
    Data.Set 0xA0020018 %Long Data.SUM()
    Data.Set 0xA002001C %Long ~Data.SUM()

    My goal was to clear BMHD0 and set BMHD1 to start executing software from 0xA0080900. Unfortunately after this procedure I have no communication with the CPU.

    What's wrong? Can it be undone?

  2. #2
    New Member New Member
    Infineon Employee
    Infineon Employee
    MoD is on a distinguished road
    Join Date
    Feb 2012
    boths BMHD are invalid and ignored during startup. This should not lock the device. You can check this with the ESR0 signal. If ESR0 is always low then the device is locked. If the ESR0 is always high (external pull-up on this pin is needed) after power on reset and the debugger can't access then the device is in the Generic Bootstraploader and wait for data via ASC/CAN.
    Which board you are using? How are the external connections on P14.3, P10.5 and P10.6?
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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