测试demo

创建两个任务 任务一 按键按下 释放二值信号量 任务二获取 并打印执行次数

#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "led.h"
#include "FreeRTOS.h"
#include "task.h"
#include "key.h"
#include "time.h"
#include  "queue.h"
#include "semphr.h"
#define START_TASK_PRIO 1  //任务优先级
#define START_STK_SIZE  120  //任务堆栈
TaskHandle_t Start_Handler;
void start_task(void *pvParameters);

#define Task1_TASK_PRIO 2  //任务优先级
#define Task1_STK_SIZE  120  //任务堆栈
TaskHandle_t Task1_Handler;
void task1_task(void *pvParameters);

#define Task2_TASK_PRIO 3  //任务优先级
#define Task2_STK_SIZE  120  //任务堆栈
TaskHandle_t Task2_Handler;
void task2_task(void *pvParameters);


#define KEYSG_Q_NUM 1 //队列数为1
#define MESSAGE_Q_NUM 4



 
SemaphoreHandle_t erzhixinhaoliang;//二值信号量句柄

//*******************下面注释掉的代码是通过 位带 操作实现IO口控制**************************************

int main(void)
{ 
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//设置系统中断优先级分组4
	delay_init(168);		  //初始化延时函数
	KEY_Init();
  uart_init(115200);
	
	LED_Init();		        //初始化LED端口
	TIM3_Int_Init(5000-1,8400-1);
  while(1)
	{
		 xTaskCreate((TaskFunction_t) start_task,
							    (char *) "start_task",
							    (uint16_t) START_STK_SIZE,
							     (void *) NULL,
							     (UBaseType_t) START_TASK_PRIO,
							     (TaskHandle_t *) &Start_Handler ); /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
			
	   vTaskStartScheduler();//   开启任务调度器  注意一定要开启
									 
		 
	 }
}


//创建开始任务
void start_task(void *pvParameters)
{
	
	taskENTER_CRITICAL();//进入临界区
	
	
	
	erzhixinhaoliang=xSemaphoreCreateBinary();//创建二值信号量
	if(erzhixinhaoliang==NULL)
	{
		printf("Bin sem create failed\r\n");  
	}
	
	//创建task1
	xTaskCreate((TaskFunction_t) task1_task,
							    (char *) "task1_task",
							    (uint16_t) Task1_STK_SIZE,
							     (void *) NULL,
							     (UBaseType_t) Task1_TASK_PRIO,
							     (TaskHandle_t *) &Task1_Handler ); /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
	//创建task2 按键处理任务
	xTaskCreate((TaskFunction_t) task2_task,
							    (char *) "task2_task",
							    (uint16_t) Task2_STK_SIZE,
							     (void *) NULL,
							     (UBaseType_t) Task2_TASK_PRIO,
							     (TaskHandle_t *) &Task2_Handler ); /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
 
 vTaskDelete(Start_Handler); //删除开始任务
 taskEXIT_CRITICAL();//退出临界区									 

}

void task1_task(void *pvParameters)
{
	u8 key;
	
  
	while(1)
	{
		key=KEY_Scan(0);
		if(key==4)
		{
			if(erzhixinhaoliang!=NULL);
			{
				xSemaphoreGive(erzhixinhaoliang);
			}
		}
		LED0=!LED0;
		vTaskDelay(10);//10个时钟节拍 10ms
	}
	
}
void task2_task(void *pvParameters)
{
	u8 key;
	u8 count=0;
	BaseType_t err;
	
	
	while(1)
	{
		  count++;
		  if(erzhixinhaoliang!=NULL)
			{
				xSemaphoreTake(erzhixinhaoliang,portMAX_DELAY);//获取信号量  阻塞时间为死等
				printf("count =%d\r\n",count);
			}
			else
			{
				vTaskDelay(10);
				
			}
		
		
		
	}
	
}