TIM2 TIM3 TIM4 TIME5定时器使用

#include "timer.h"
#include "led.h"
#include "usart.h"

void TIM3_Int_Init(u16 arr,u16 psc)
{
	
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟

	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值	 计数到5000为500ms
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值  10Khz的计数频率  
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
 
	TIM_ITConfig(  //使能或者失能指定的TIM中断
		TIM3, //TIM2
		TIM_IT_Update  |  //TIM 中断源
		TIM_IT_Trigger,   //TIM 触发中断源 
		ENABLE  //使能
		);
					
	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //先占优先级0级
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //从优先级3级
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);  //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器

	TIM_Cmd(TIM3, ENABLE);  //使能TIMx外设
							 
}





void TIM5_Int_Init(u16 arr,u16 psc)
{	  
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  TIM_ICInitTypeDef TIM5_ICInitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE); //tim5时钟使能
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); //pa端口使能
		

	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值	
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
	

	TIM5_ICInitStructure.TIM_Channel=TIM_Channel_1;//通道1----CH1----pa0
	TIM5_ICInitStructure.TIM_ICFilter=0x00;//不滤波
	TIM5_ICInitStructure.TIM_ICPolarity=TIM_ICPolarity_Rising;//上升沿检测
	TIM5_ICInitStructure.TIM_ICPrescaler=TIM_ICPSC_DIV1;
	TIM_ICInit(TIM5,&TIM5_ICInitStructure);
	
	TIM_ITConfig(TIM5,TIM_IT_CC1,ENABLE);//允许更新中断和捕获中断
	

	//中断分组初始化
	NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;  //TIM5中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;  //先占优先级2级
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;  //从优先级0级
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);  //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 
	
	TIM_Cmd(TIM5, ENABLE);  //使能TIMx					 
}

u16 TIM5CH1_CAPTURE_COUNT=0;//输入捕捉数

//定时器5中断服务程序
void TIM5_IRQHandler(void)   //TIM3中断
{
	if (TIM_GetITStatus(TIM5, TIM_IT_CC1) != RESET)  //检查TIM5更新中断发生与否
		{
	    TIM5CH1_CAPTURE_COUNT++;
			LED1=!LED1;
		}
		 TIM_ClearITPendingBit(TIM5, TIM_IT_CC1|TIM_IT_Update); //清除中断标志位
}

u8 sign=0;
//定时器3中断服务程序
void TIM3_IRQHandler(void)   //TIM3中断
{
	if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)  //检查TIM3更新中断发生与否
		{
     ;
		}
			TIM_ClearITPendingBit(TIM3, TIM_IT_Update  );  //清除TIMx的中断待处理位:TIM 中断源 
}



//
void TIM2_Int_Init(u16 arr,u16 psc)
{
	
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);	//使能定时器2时钟
	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值	 计数到5000为500ms
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值  10Khz的计数频率  
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

	TIM_ITConfig(  //使能或者失能指定的TIM中断
		TIM2, //TIM2
		TIM_IT_Update  |  //TIM 中断源
		TIM_IT_Trigger,   //TIM 触发中断源 
		ENABLE  //使能
		);
				
	NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;  //TIM3中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //先占优先级0级
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;  //从优先级3级
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);  //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器

	TIM_Cmd(TIM2, ENABLE);  //使能TIMx外设
							 
}

//定时器2中断服务程序
void TIM2_IRQHandler(void)   //TIM3中断
{
	if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)  //检查TIM3更新中断发生与否
		{
			if(sign++==5)
			{
					TIM5CH1_CAPTURE_COUNT=0;
          sign=0;				
			}
		}
			TIM_ClearITPendingBit(TIM2, TIM_IT_Update  );  //清除TIMx的中断待处理位:TIM 中断源 
}



//TIM4 输出四路 pwm PB6,7,8,9；
void TIM4_PWM_Init(u16 arr,u16 psc)
{
	GPIO_InitTypeDef GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);	//使能定时器3时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
 
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9; //TIM_CH2
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO

	
	
	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值	 计数到5000为500ms
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值  10Khz的计数频率  
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
 

		
	//初始化TIM4 Channel2 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	
	TIM_OC4Init(TIM4, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM4 OC1
  TIM_OC3Init(TIM4, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM4 OC2
	TIM_OC2Init(TIM4, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM4 OC1
  TIM_OC1Init(TIM4, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM4 OC2
	
	
//	TIM_CtrlPWMOutputs(TIM4,ENABLE);//这句话需不需要都可以
	
	TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable);  //使能TIM4在CCR1的预装载寄存器
	TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);  //使能TIM4在CCR2上的预装载寄存器
	TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable);  //使能TIM4在CCR1的预装载寄存器
	TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);  //使能TIM4在CCR2上的预装载寄存器，没有这句话会导致波形出错
	TIM_Cmd(TIM4, ENABLE);  //使能TIMx外设
							 
}