MPC5748G program crashes when mounting SD card in Multicore project.

[MattJCole]

I have a project that runs on the MPC5748G processor but only uses one of the three cores. I am trying to get it to run using all of the cores. The problem I have is that the code crashes when it tries to mount the SD card when running from the debugger and I think it crashes when trying to initialize the debug console when running from flash. Do you know what would cause the Z4_0 core to crash?

Z4_0

int main(void)

{

  /* Write your local variable definition here */

  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/

  #ifdef PEX_RTOS_INIT

    PEX_RTOS_INIT();                   /* Initialization of the selected RTOS. Macro is defined by the RTOS component. */

  #endif

  /*** End of Processor Expert internal initialization.                    ***/

   // *isCfgLoaded = CFG_NOT_LOADED;

  /* Write your code here */

    CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);

    CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);

    /* Initialize pins */

    PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);

    // Initialize channel 0

    //PIT_DRV_InitChannel(INST_PIT1, &pit1_ChnConfig0);

    // Start channel 0 counting

    //PIT_DRV_StartChannel(INST_PIT1, pit1_ChnConfig0.hwChannel);

#if (SDK_DEBUGCONSOLE)

  /* Initialize debug console for output display on terminal */

  DbgConsole_Init(DEBUG_CONSOLE_SPEED, DEBUG_CONSOLE_DEVICE_TYPE_UART);

#endif /* (SDK_DEBUGCONSOLE) */

  // Initialize FATFS for uSDHC

  uSDHC_fatfs_initialize();

  // Starts main task. This task is responsible for starting the core Buoy tasks and other tasks based on the type of

  // buoy the unit is set to.

  xTaskCreate(OPT_Main,

              (const char *const)MAINTASK_TASK_NAME,

              MAINTASK_TASK_STACK_SIZE,

              NULL,

              MAINTASK_TASK_PRIORITY,

              NULL);

  xTaskCreate( vLEDTask, ( const char * const ) "LedTask", configMINIMAL_STACK_SIZE, (void*)0, mainLED_TASK_PRIORITY, NULL );

  // Start the scheduler.

  vTaskStartScheduler();

  /*** Don't write any code pass this line, or it will be deleted during code generation. ***/

  /*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/

  #ifdef PEX_RTOS_START

    PEX_RTOS_START();                  /* Startup of the selected RTOS. Macro is defined by the RTOS component. */

  #endif

  /*** End of RTOS startup code.  ***/

  /*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/

  for(;;) {

    if(exit_code != 0) {

      break;

    }

  }

  return exit_code;

  /*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/

} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

Z4_1

int main(void)

{

  /* Write your local variable definition here */

  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/

  #ifdef PEX_RTOS_INIT

    PEX_RTOS_INIT();                   /* Initialization of the selected RTOS. Macro is defined by the RTOS component. */

  #endif

  /*** End of Processor Expert internal initialization.                    ***/

  /* Write your code here */

    CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);

     CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);

     /* Initialize pins */

     PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);

     xTaskCreate( vLEDTask, ( const char * const ) "LedTask", configMINIMAL_STACK_SIZE, (void*)1, mainLED_TASK_PRIORITY+1, NULL );

     // Start the scheduler.

     vTaskStartScheduler();

  /*** Don't write any code pass this line, or it will be deleted during code generation. ***/

  /*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/

  #ifdef PEX_RTOS_START

    PEX_RTOS_START();                  /* Startup of the selected RTOS. Macro is defined by the RTOS component. */

  #endif

  /*** End of RTOS startup code.  ***/

  /*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/

  for(;;) {

    if(exit_code != 0) {

      break;

    }

  }

  return exit_code;

  /*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/

} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

Z2_2

int main(void)

{

  /* Write your local variable definition here */

  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/

  #ifdef PEX_RTOS_INIT

    PEX_RTOS_INIT();                   /* Initialization of the selected RTOS. Macro is defined by the RTOS component. */

  #endif

  /*** End of Processor Expert internal initialization.                    ***/

  /* Write your code here */

    CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);

    CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);

    /* Initialize pins */

    PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);

    xTaskCreate( vLEDTask, ( const char * const ) "LedTask", configMINIMAL_STACK_SIZE, (void*)2, mainLED_TASK_PRIORITY+2, NULL );

    // Start the scheduler.

    vTaskStartScheduler();

  /*** Don't write any code pass this line, or it will be deleted during code generation. ***/

  /*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/

  #ifdef PEX_RTOS_START

    PEX_RTOS_START();                  /* Startup of the selected RTOS. Macro is defined by the RTOS component. */

  #endif

  /*** End of RTOS startup code.  ***/

  /*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/

  for(;;) {

    if(exit_code != 0) {

      break;

    }

  }

  return exit_code;

  /*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/

} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

[MattJCole]

Have you found out why the code crashes when mounting the SD card?

[MattJCole]

I do not know what is causing the IVOR1 exception. what do I need to do with the MCSR, MCAR and MCSRR0 registers?  Will they tell me why the program is crashing?

[davidtosenovjan]

Sure, you will find at least first indication to know what happened.

[MattJCole]

I am not sure what you mean by “standalone without debugger”. I have run it without using the debugger by power cycling the board and the Z4_0 core crashes I just do not know where because I do not have the debugger connected. What I do to recreate the problem is first start running the debugger using the Launch group. I start the Z4_0 core first, next the Z4_1 core, and last the Z2_2 core. When I check on the status of the Z4_0 core it is in IVOR1_Exception_Handler. The cores Z4_1 core, and Z2_2 still run after the Z4_0 crashes.

[davidtosenovjan]

It is needed to investigate the reason of IVOR1 exception. Pay attention to MCSR, MCAR and MCSRR0 coire registers to investigate IVOR1 reason, address and address of instruction that caused the exception. 

[davidtosenovjan]

Have you tried it standalone without debug? Could you describe "crash" of the core more in detail? Does it fail into exception?