[SOLVED] Ozone tracing:Cortex-M3 Instruction Trace NO data

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  • [SOLVED] Ozone tracing:Cortex-M3 Instruction Trace NO data


    I am trying to enable the ETM Tracing with Ozone on a ARM Cortex-M3 MCU.

    But when starting a debugging session there is no instruction data, also I can't get the half-sync 16'h7fff, I always get 32'h7fffffff when the target is halted.

    Can Ozone configure the right value to regs in ETM/TPIU component of Cortex-M3 automatically?

    As no matter what trace pins width I use the TPIU_CSPSR keep the default value, but when I use the "Cortex-M Trace Reference Board" bought from Segger, the register is changed correctly. I just follow the TraceExample provided on Segger.com.

    Tutorial Project: J-Trace Streaming Trace tutorial project
    The following is a bare bone example with tracing at maximum trace clock speed the Trace Reference Board supports.
    Max. Trace clock speed + JLinkScript sample: ST_STM32F407_84MHz_TraceExample.zip

    The Ozone output log is as blow:

    Project.SetJLinkScript ("./Traceconfig.JLinkScript");
    Executed J-Link command "ScriptFile=D:/Trace/Proj/segger/Traceconfig.JLinkScript"
    Device "CORTEX-M3" selected.
    Found SW-DP with ID 0x2BA01477
    DPIDR: 0x2BA01477
    Scanning AP map to find all available APs
    AP[1]: Stopped AP scan as end of AP map has been reached
    AP[0]: AHB-AP (IDR: 0x04770021)
    Iterating through AP map to find AHB-AP to use
    AP[0]: Core found
    AP[0]: AHB-AP ROM base: 0xE00FF000
    CPUID register: 0x410FC331. Implementer code: 0x41 (ARM)
    Found Cortex-M3 r0p1, Little endian.
    FPUnit: 6 code (BP) slots and 2 literal slots
    CoreSight components:
    ROMTbl[0] @ E00FF000
    ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB004 ???
    ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 000BB006 ???
    ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 000BB007 ???
    ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 000BB005 ???
    ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB927 ???
    ROMTbl[0][5]: E0041000, CID: B105900D, PID: 000BB926 ???
    Connected to target device.
    Reset: Halt core after reset via DEMCR.VC_CORERESET.
    Reset: Reset device via AIRCR.SYSRESETREQ.
    Executed J-Link command "SetRTTAddr 0x20000400"
    Executed J-Link command "SelectTraceSource=1"
    OnTraceStart() start
    Start: Initializing trace pins
    DBGMCU Init
    End: Initializing trace pins
    OnTraceStart() end

    Any Ideas whats going wrong here?



    PS :
    Hardware set up :

    Segger embedded studio v4.16
    Ozone v3.10d
    J-trace PRO for cortex M processor probe
    Jlink Driver v650
  • Add picture the TPIU register configuration:
    "Cortex-M Trace Reference Board" VS "My Ozone project based on Cortex-M3 MCU".

    My question is Whether Ozone can configure the right value to regs in ETM/TPIU component of Cortex-M3 automatically?
    Any why my Ozone project failed ?

    Thank you very much.
    • trace.png

      234.96 kB, 1,471×534, viewed 50 times
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