计数型信号量的问题

chenbingjy

计数型信号量的问题 [复制链接]

 

代码：

#include "at32l021_board.h"
#include "at32l021_clock.h"
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"
/** @addtogroup UTILITIES_examples
  * @{
  */
QueueHandle_t CountSemaphore;
//unsigned char flag=0;
/** @addtogroup FreeRTOS_demo
  * @{
  */
button_type key=1;	
//extern QueueHandle_t xQueueCreateCountingSemaphore( const UBaseType_t uxMaxCount,
                                                 //const UBaseType_t uxInitialCount );
 
static void vPeriodicTassk(void *pvParamters)
{
	unsigned int i;
	UBaseType_t err;
    while(1)
    {	
				key=at32_adatin_state();
			if(key==0)
			{	
					for(i=0;i<3000;i++)
					{
						key=at32_adatin_state();
						if(key==0)
						{
							while(1)
							{
								key=at32_adatin_state();
								if(key==1)
									break;
							}
					if(CountSemaphore!=NULL)
					{
						err=xSemaphoreGive(CountSemaphore);
						
						if(err==pdFALSE)
						{
							printf("Sem Rele Failed!\r\n");
							//flag=0;
						}
						else
						{
							printf("Sem Role Succeed!\r\n");
							//flag=1;
						}
					}
				}
			}
				
        
				//LED0_TOGGLE();
        //vTaskDelay(10); 
				}/* 延时1000ticks */
    }
}
static void vHandlerTask(void *pvParamters)
{
	unsigned int i;
	UBaseType_t semavalue=0;
    while(1)
    {
			
			if(CountSemaphore!=NULL)
			{
				//if(flag==1)
				//{
				//	flag=0;
				xSemaphoreTake(CountSemaphore,portMAX_DELAY);
				semavalue=uxSemaphoreGetCount(CountSemaphore);
					
					printf("semavalue value=%d\r\n",(int)semavalue);
				//}
			}
			//else
			//{
			//	for(i=0;i<1000;i++);
			//}
				//printf("Task2 Running!\r\n");
				//vTaskDelay(1000);
			for(i=0;i<60000;i++);
    }
}
/**
  * [url=home.php?mod=space&uid=159083]@brief[/url] main function.
  * @param  none
  * @retval none
  */
int main(void)
{
  system_clock_config();
	at32_board_init();
  /* init led2 and led3 */
  at32_led_init(LED2);
  at32_led_init(LED3);

  /* init usart1 */
  uart_print_init(115200);
	
  /* enter critical */
  taskENTER_CRITICAL();
	CountSemaphore=xSemaphoreCreateCounting(10,10);
		if(CountSemaphore==NULL)
		{
			printf("create CountSemaphore failed!\r\n");
		}
  /* create led2 task */
  xTaskCreate((TaskFunction_t )vPeriodicTassk,
                 (const char*    )"vTask1",
                 (uint16_t       )128,
                 (void*          )NULL,
                 (UBaseType_t    )2,
                 (TaskHandle_t*  )NULL);
  
  /* create led3 task */
  xTaskCreate((TaskFunction_t )vHandlerTask,
                 (const char*    )"vTask2",
                 (uint16_t       )128,
                 (void*          )NULL,
                 (UBaseType_t    )2,
                 (TaskHandle_t*  )NULL) ;
  

  /* exit critical */
  taskEXIT_CRITICAL();

  /* start scheduler */
  vTaskStartScheduler();
}


/**
  * @}
  */

/**
  * @}
  */

这个程序，一运行就收到信号量

到零后，按下按键，发送成功，可是收不到信号量。

请问高手，这个程序有什么问题？谢谢