# Freertos_软件定时器

**Repository Path**: wang-jialll/freertos_task7

## Basic Information

- **Project Name**: Freertos_软件定时器
- **Description**: 软件定时器学习
学习野火的代码
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-09-04
- **Last Updated**: 2022-09-05

## Categories & Tags

**Categories**: Uncategorized

**Tags**: FreeRTOS

## README

# 软件定时器

# 实验
创建两个定时器，一个使用单次模式，5000个tick调用一次回调函数，另一个使用周期模式1000个tick调用一次回调函数
> 打开软件定时器宏定义
> #define configUSE_TIMERS				            1       

1. 定义软件定时器句柄
```C
//软件定时器句柄
TimerHandle_t Swtmr1_Handle = NULL;
TimerHandle_t Swtmr2_Handle = NULL;
```
2. 实现回调函数 void(*TimerCallbackFunction)(TimerHandle xTimer);
```C
void Swtmr1_Callback( TimerHandle_t xTimer )
{
	TickType_t tick_num1;
	TmrCb_Count1++;

	tick_num1 = xTaskGetTickCount();//获取滴答定时器计数值
	LED1_TOGGLE;
	printf("Swtmr1_Callback函数执行 %d 次\r\n",TmrCb_Count1);
	printf("滴答定时器数值%d\r\n",tick_num1);
}

void Swtmr2_Callback( TimerHandle_t xTimer )
{
	TickType_t tick_num2;
	TmrCb_Count2++;

	tick_num2 = xTaskGetTickCount();//获取滴答定时器计数值
	LED1_TOGGLE;
	printf("Swtmr2_Callback函数执行 %d 次\r\n",TmrCb_Count2);
	printf("滴答定时器数值%d\r\n",tick_num2);
}
```
3. 创建定时器_xTimerCreat()
```C
Swtmr1_Handle=xTimerCreate(	"AutoReloadTimer",
								1000,
								pdTRUE,     //周期
								(void *)1,
								Swtmr1_Callback ); /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
	xTimerStart(Swtmr1_Handle,0);//句柄加阻塞时间，打开周期定时器

	Swtmr2_Handle=xTimerCreate(	"OneShotTimer",
								5000,
								pdFALSE,   //单次
								(void *)2,
								Swtmr2_Callback ); /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
	xTimerStart(Swtmr2_Handle,0);//句柄加阻塞时间，打开单次定时器
```
4. 启动定时器——xTimerStart()
```C
xTimerStart(Swtmr1_Handle,0);//句柄加阻塞时间，打开周期定时器
xTimerStart(Swtmr2_Handle,0);//句柄加阻塞时间，打开单次定时器
```