5 Replies Latest reply on May 4, 2019 4:37 AM by PriyaM_16

    Debugger hits an exception in wiced_init()


      Using a CYW943907AEVAL1F and Wiced Studio, I can download and start the debugger using the instructions in Re: wiced Debug , but when I try to debgu I haev problems:

      • the first line of my appication_start() is wiced_init().  If I set a breakpoint on that lien I can get there
      • If I try to step over wiced_init(), it never returns.  Instead I end up in data_abort_handler()
      • The code works fine if I run it without debug.

      Any idea what may be causing this?


      contents of debug window

      43xxx_Wi-Fi_Debug_Windows [GDB Hardware Debugging]


      Thread #3 5413856 (Name: app thread, State: Ready) (Suspended : Container)

      Thread #4 5349408 (Name: System Timer Thread, State: Suspended) (Suspended : Container)

      Thread #5 5371032 (Name: WWD, State: Ready) (Suspended : Signal : SIGTRAP:Trace/breakpoint trap)

      data_abort_handler() at exception_handlers.c:398 0x4a2e38

      m2m_dma_attach() at m2m_hnddma.c:272 0x4de59a

      Thread #6 5346760 (Name: worker thread, State: Waiting - Queue) (Suspended : Container)

      Thread #7 5347020 (Name: worker thread, State: Waiting - Queue) (Suspended : Container)

      Software/Code/43xxx_Wi-Fi/tools/ARM_GNU/Win32/bin/arm-none-eabi-gdb.exe (


      Contents of Console

      GNU gdb (GNU Tools for Arm Embedded Processors 7-2018-q2-update)

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      [Switching to thread 1 (Thread -1)]



      Warning: the current language does not match this frame.

      [New Thread 5413856]

      [New Thread 5349408]

      [Switching to Thread 5413856]



      Thread 3 "" hit Breakpoint 2, application_start () at apps/XXX/XXX/XXX.c:60

      60    wiced_init(); /* Initialize the WICED device */

      [New Thread 5371032]

      [New Thread 5346760]

      [New Thread 5347020]



      Thread 5 "" received signal SIGTRAP, Trace/breakpoint trap.

      [Switching to Thread 5371032]

      0x004a2e38 in data_abort_handler () at WICED/platform/MCU/BCM4390x/../../ARM_CR4/exception_handlers.c:398