FreeRTOS中断测试

configMAX_SYSCALL_INTERRUPT_PRIORITY
高于此优先级的中断，不能被禁止

#ifdef __NVIC_PRIO_BITS
    #define configPRIO_BITS             __NVIC_PRIO_BITS
#else
    #define configPRIO_BITS             4                  
#endif

#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY         15                      //中断最低优先级
#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY    5                       //系统可管理的最高中断优先级
#define configKERNEL_INTERRUPT_PRIORITY         ( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
#define configMAX_SYSCALL_INTERRUPT_PRIORITY    ( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )

测试举例

int main(void)
{
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//设置系统中断优先级分组4

    TIM3_Int_Init(10000-1,7200-1);      //初始化定时器3，定时器周期1S
    TIM5_Int_Init(10000-1,7200-1);      //初始化定时器5，定时器周期1S

    //创建中断测试任务
    xTaskCreate((TaskFunction_t )interrupt_task,            //任务函数
                (const char*    )"interrupt_task",          //任务名称
                (uint16_t       )INTERRUPT_STK_SIZE,        //任务堆栈大小
                (void*          )NULL,                      //传递给任务函数的参数
                (UBaseType_t    )INTERRUPT_TASK_PRIO,       //任务优先级
                (TaskHandle_t*  )&INTERRUPTTask_Handler);   //任务句柄
}

//中断测试任务函数 
void interrupt_task(void *pvParameters)
{
    static u32 total_num=0;
    while(1)
    {
        total_num+=1;
        if(total_num==5) 
        {
            printf("关闭中断.............
");
            portDISABLE_INTERRUPTS();               //关闭中断
            delay_xms(5000);                        //延时5s
            printf("打开中断.............
");    //打开中断
            portENABLE_INTERRUPTS();
        }
        vTaskDelay(1000);
    }
}   

测试效果