TI中文支持网你好，我在CCS上运行websock_camera的时候，运行到osi_start（）的时候就会进入FaultISR()死循环锁死，请问怎么解决
Terry Han：
操作系统启动后，开始任务的调度处理，能判断是在具体执行哪个任务的时候进入了FaultlSR()?
Tian yu Zhang：
回复 Terry Han:
运行到
这个任务的时候卡住了，代码如下
BaseType_t xPortStartScheduler( void ){ /* configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0. See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html */ configASSERT( configMAX_SYSCALL_INTERRUPT_PRIORITY );
#if( configASSERT_DEFINED == 1 ) { volatile uint32_t ulOriginalPriority; volatile uint8_t * const pucFirstUserPriorityRegister = ( volatile uint8_t * const ) ( portNVIC_IP_REGISTERS_OFFSET_16 + portFIRST_USER_INTERRUPT_NUMBER ); volatile uint8_t ucMaxPriorityValue;
/* Determine the maximum priority from which ISR safe FreeRTOS API functions can be called. ISR safe functions are those that end in "FromISR". FreeRTOS maintains separate thread and ISR API functions to ensure interrupt entry is as fast and simple as possible.
Save the interrupt priority value that is about to be clobbered. */ ulOriginalPriority = *pucFirstUserPriorityRegister;
/* Determine the number of priority bits available. First write to all possible bits. */ *pucFirstUserPriorityRegister = portMAX_8_BIT_VALUE;
/* Read the value back to see how many bits stuck. */ ucMaxPriorityValue = *pucFirstUserPriorityRegister;
/* Use the same mask on the maximum system call priority. */ ucMaxSysCallPriority = configMAX_SYSCALL_INTERRUPT_PRIORITY & ucMaxPriorityValue;
/* Calculate the maximum acceptable priority group value for the number of bits read back. */ ulMaxPRIGROUPValue = portMAX_PRIGROUP_BITS; while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE ) { ulMaxPRIGROUPValue–; ucMaxPriorityValue <<= ( uint8_t ) 0x01; }
/* Shift the priority group value back to its position within the AIRCR register. */ ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT; ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original value. */ *pucFirstUserPriorityRegister = ulOriginalPriority; } #endif /* conifgASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */ portNVIC_SYSPRI2_REG |= portNVIC_PENDSV_PRI; portNVIC_SYSPRI2_REG |= portNVIC_SYSTICK_PRI;
/* Start the timer that generates the tick ISR. Interrupts are disabled here already. */ vPortSetupTimerInterrupt();
/* Initialise the critical nesting count ready for the first task. */ uxCriticalNesting = 0;
/* Start the first task. */ prvPortStartFirstTask();
/* Should never get here as the tasks will now be executing! Call the task exit error function to prevent compiler warnings about a static function not being called in the case that the application writer overrides this functionality by defining configTASK_RETURN_ADDRESS. */ prvTaskExitError();
/* Should not get here! */ return 0;}
configASSERT_DEFINED这个参数的宏定义是0，就没有进入if语句，为什么会出现这种情况
