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Step Into (F5) and Step Over(F6) not working on CCS 6.1.3.00033

Rishabh Garg
Guru 55685 points
Other Parts Discussed in Thread: SYSBIOS, AM4378

Hi,


I am using CCS v 6.1.3.00033, XDS560v2 and TI emulator package v 6.0.407.3.

When I try to step into or step over my code, I am getting below error:

ti.sysbios.family.arm.m3.Hwi: line 1095: E_hardFault: FORCED
ti.sysbios.family.arm.m3.Hwi: line 1207: E_usageFault: NOCP: Attempting to use co-processor
Exception occurred in background thread at PC = 0x8006e948.
Core 0: Exception occurred in ThreadType_Task.
Task name: {unknown-instance-name}, handle: 0x80744c94.

One interesting observation is that Run to line(Ctrl + R) or free run(F8) is working fine for the same binary.

Regards,

Rishabh

  • Guru 92251 points

    Rishabh Garg said:
    When I try to step into or step over my code, I am getting below error:

    Rishabh Garg said:
    One interesting observation is that Run to line(Ctrl + R) or free run(F8) is working fine for the same binary.

    The default debug properties for a CCS project under Program/Memory Load Options is that:

    a) Interrupts are disabled when Assembly Stepping or when Source Stepping.

    b) Interrupts are not disabled when Running.

    I think that for some reason when you try stepping into or stepping over your code that the CCS debugger is disabling and then re-enabling interrupts which leads to the SYS/BIOS exception.

    On a AM4378 target I have seen CCS disabling interrupts when stepping cause issues - see CCS 6.1.1 debugger Step Over of a blocking function call in a TI-RTOS based AM4378 program hangs

    If you change the CCS project properties to NOT disable interrupts when Assembly Stepping or Source Stepping does that avoid the SYS/BIOS exception?

  • in reply to Chester Gillon
    TI__Guru 55685 points
    Hi Chester,

    SYSBIOS exception did not occur on modifying the CCS project properties.
    But I did not face this issue with CCS5.4 or CCS 5.5.
    Shouldn't this be fixed in CCS6.1?

    Regards,
    Rishabh
  • in reply to Rishabh Garg
    Guru 92251 points

    Rishabh Garg said:
    Shouldn't this be fixed in CCS6.1?

    This does sound like a bug in CCS 6.1. Can you enable CCS Debug Server Logging and attach the log file for the failure case where a SYS/BIOS exception occurs when Step Into or Step Over is used.

    Also, are you able to attach a SYS/BIOS project which shows the problem?

  • in reply to Chester Gillon
    TI__Guru 55685 points

    Hi,

    I don't have a CCS project that shows the problem. I am running makefie based example on TDA2xx-EVM.

    I have shared the debug log at: \\a0132235pc\Shared\CCS_debug.

    Regards,

    Rishabh

  • in reply to Rishabh Garg
    Guru 92251 points

    Rishabh Garg said:
    I have shared the debug log at: \\a0132235pc\Shared\CCS_debug.

    Since I am not a TI employee I can't access the internal TI network. Is it possible you can zip up the CCS debug server log and attach to the forum?

    Rishabh Garg said:
    I am running makefie based example on TDA2xx-EVM.

    OK, are you running a unmodified makefile example for the TDS2xx EVM and if so which one?

  • in reply to Chester Gillon
    TI__Guru 55685 points
    Hi,

    Thanks for your help. I have shared the log with TI CCS team.
    They will look into this issue.
    I will update this thread on receiving the fix.

    Regards,
    Rishabh