代码:
- #include "at32l021_board.h"
- #include "at32l021_clock.h"
- #include "FreeRTOS.h"
- #include "task.h"
- #include "queue.h"
- #include "semphr.h"
- #include "stdio.h"
- /** @addtogroup UTILITIES_examples
- * @{
- */
- int cnt=0;
- QueueHandle_t CountSemaphore;
- /** @addtogroup FreeRTOS_demo
- * @{
- */
- button_type key=1;
- //unsigned char const mainSENDER_1=30;
- //unsigned char const mainSENDER_2=50;
- button_type at32_button_press(void);
- void task1(void *pvParameters)
- {
- unsigned int i;
- UBaseType_t err;
- while(1)
- {
- key=at32_button_state();
- if(key==1)
- {
- for(i=0;i<3000;i++);
- key=at32_button_state();
- if(key==1)
- {
- while(1)
- {
- key=at32_button_state();
- if(key==0)
- break;
- }
- err=xSemaphoreGive(CountSemaphore);
-
- if(err==pdFALSE)
- {
- printf("Sem Rele Failed!\r\n");
- //flag=0;
- }
- else
- {
- printf("Sem Role Succeed!\r\n");
- //flag=1;
- }
- }
- }/* 延时1000ticks */
- vTaskDelay(10);
- taskYIELD();
- }
- }
- /**
- * [url=home.php?mod=space&uid=247401]@brief[/url] task2
- * @param pvParameters : 传入参数(未用到)
- * @retval 无
- */
- void Keyprocess_task(void *pvParameters)
- {
- unsigned int i=0;
- UBaseType_t semavalue=0;
- while(1)
- {
-
- if(CountSemaphore!=NULL)
- {
-
- xSemaphoreTake(CountSemaphore,portMAX_DELAY);
- semavalue=uxSemaphoreGetCount(CountSemaphore);
-
- printf("semavalue value=%d\r\n",(int)semavalue);
-
-
- }
- else
- {
- vTaskDelay(10);
- }
- //printf("Task2 Running!\r\n");
- vTaskDelay(1000);
- }
- }
- /**
- * @brief main function.
- * @param none
- * @retval none
- */
- int main(void)
- {
- system_clock_config();
- delay_init();
- /* init led2 and led3 */
- at32_led_init(LED2);
- at32_led_init(LED3);
- at32_button_init();
- /* init usart1 */
- uart_print_init(115200);
- taskENTER_CRITICAL();
- CountSemaphore=xSemaphoreCreateCounting(10,10);
- if(CountSemaphore==NULL)
- {
- printf("create CountSemaphore failed!\r\n");
- }
-
-
-
- /* create led2 task */
- xTaskCreate(task1,
- "vTask1",
- 128,
- (void *)30,
-
- 2,
- NULL);
-
- xTaskCreate(Keyprocess_task,
- "vTask2",
- 128,
- NULL,
- 3,
- NULL);
-
- taskEXIT_CRITICAL();
- /* start scheduler */
- vTaskStartScheduler();
-
- }
运行效果图:
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