T640_DTU/USER/Timer.c

/********************************************************************************
 * File Name: 	Timer.c
 *******************************************************************************/
#include "includes.h"
#include "Timer.h"


#define TIM2_COUNTER_CLOCK		1000000		//计数时钟(次/秒)
#define TIM2_PRESCALER_VALUE (SystemCoreClock/TIM2_COUNTER_CLOCK-1)

#define TIM3_COUNTER_CLOCK		1000			//计数时钟(次/秒)
#define TIM3_PRESCALER_VALUE (SystemCoreClock/TIM3_COUNTER_CLOCK-1)


pt_timer_t PoolTimer;
/*********************************************************************************
*Timer3_Init
arr定时时长
因为TIM3_COUNTER_CLOCK=1K/次  因此arr以ms为单位   如arr=65535 定时时间位65535ms=65.35s 
**********************************************************************************/
void Timer3_Init(unsigned short arr)
{
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
	TIM_TimeBaseStructure.TIM_Period = arr; 	//定是周期到，自动重载值
	TIM_TimeBaseStructure.TIM_Prescaler =TIM3_PRESCALER_VALUE; //预分频值
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;  //时钟分频因子 
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
 
	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 
	NVIC_Init(&NVIC_InitStructure);
	
	TIM_ClearFlag(TIM3, TIM_FLAG_Update);
}


/*********************************************************************************
*Timer3_enable
**********************************************************************************/
void Timer3_enable( void )
{
	TIM_ClearFlag(TIM3, TIM_FLAG_Update); 
	TIM_SetCounter(TIM3,0x00);		
	TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
	TIM_Cmd(TIM3,ENABLE);
}
/*********************************************************************************
*Timer3_disable
**********************************************************************************/
void Timer3_disable (void)
{

	TIM_ITConfig(TIM3, TIM_IT_Update | TIM_IT_Trigger,DISABLE );
	TIM_Cmd(TIM3, DISABLE);
}

/*********************************************************************************
*Timer2_Init
arr定时时长
因为TIM2_COUNTER_CLOCK=1M/次  因此arr以us为单位   如arr=65535 则定时时间为65535us=65.535ms
**********************************************************************************/
void Timer2_Init(unsigned short arr)
{
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); 

	TIM_TimeBaseStructure.TIM_Period = arr; 
	TIM_TimeBaseStructure.TIM_Prescaler =TIM2_PRESCALER_VALUE;
	TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1;  //时钟分频因子 
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 
	TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
	
	NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 
	NVIC_Init(&NVIC_InitStructure); 
	TIM_ClearFlag(TIM2,TIM_FLAG_Update);

}

/*********************************************************************************
*Timer2_enable
**********************************************************************************/
void Timer2_enable( void )
{
	TIM_ClearFlag(TIM2, TIM_FLAG_Update); 
	TIM_SetCounter(TIM2,0x00);			
	TIM_ITConfig(TIM2,TIM_IT_Update|TIM_IT_Trigger,ENABLE);
	TIM_Cmd(TIM2,ENABLE);
}
/*********************************************************************************
*Timer2_disable
**********************************************************************************/
void Timer2_disable (void)
{

	TIM_ITConfig(TIM2, TIM_IT_Update | TIM_IT_Trigger,DISABLE );
	TIM_Cmd(TIM2, DISABLE); 
}

/*********************************************************************************
*TIM3_IRQHandler
**********************************************************************************/
//void TIM3_IRQHandler(void)  
//{
//	if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)
//	{
//		TIM_ClearITPendingBit(TIM3, TIM_IT_Update); 
//		//Timer3_disable();
//		//g_ulTimer3Ct++;
//		
//	}
//}


/*********************************************************************************
*TIM2_IRQHandler
**********************************************************************************/
//void TIM2_IRQHandler(void) 
//{
//	if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) 
//	{
//		PTTimerTick(&PoolTimer);
//		TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
//	}
//}
/*********************************************************************************
SoftTimerInit
软定时器初始化
**********************************************************************************/
void STimerInit(void)
{
	PTTimerInitPool(&PoolTimer);//软定时器初始化
	Timer2_Init(1000);//设置定时器2 1ms中断1次
	Timer2_enable();//启动定时器2
	//之后每隔1ms中断1次，在TIM2_IRQHandler中调用PTTimerTick(&PoolTimer);实现软定时器计时。
	
}
/*
	启动一个软定时器.依赖于定时器池PoolTimer
*/
void STimerStart(pt_timer_t *timer, uint16_t ms)
{
	PTTimerStart(&PoolTimer, timer, ms);
}
/*
	关闭一个软定时器.从PoolTimer中移除
*/
void STimerStop(pt_timer_t *timer)
{
	PTTimerStop(&PoolTimer, timer);
}

/*
	重启一个软定时器。
*/
void STimerReStart(pt_timer_t *timer, uint16_t ms)
{
	//先关再开。
	PTTimerStop(&PoolTimer, timer);
	PTTimerStart(&PoolTimer, timer, ms);
}
/*
用软定时器延时ms毫秒
*/
void STimerDelayMs(uint16_t ms)
{
	static timer_t timer;
	PTTimerStart(&PoolTimer,&timer,ms); 
	while(1){
		if(PTTimerIsExpired(&timer))break;
	}
}

boolean STimerIsExpired(pt_timer_t *timer)
{
	return PTTimerIsExpired(timer);
}