Stm32 设置PWN定时器（完整的定时器复用表）多通道设置

系统管理员 2022-12-19 11:51 127阅读 0赞

**目录**

定时器复用表：

1、高级定时器设置（tim1，tim8）

2、通用定时器设置（以tim3为例）

3、调用

--------------------

# 定时器复用表： #

STM32F1xx官方资料：

《STM32中文参考手册V10》-第14章  通用定时器

具体资料自己查看，这个表是自己统计的，不在其中，需要资料可以留个邮箱或者自己百度

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### 1、高级定时器设置（tim1，tim8） ###

**定时器1初始化：（通道1，PA8）（IO与通道号对应查看上表）**

//高级定时器1中断初始化
    //arr：自动重装值。
    //psc：时钟预分频值。
    //(((arr+1) * (7199+1)) / 72 )us
    
    void timer1_init(u16 arr,u16 psc)
    {
        GPIO_InitTypeDef		GPIO_InitStruct;
        TIM_TimeBaseInitTypeDef	TIM_InitStruct;
        TIM_BDTRInitTypeDef		TIM_BdtrStruct;
        TIM_OCInitTypeDef		TIM_OCInitStruct;
        NVIC_InitTypeDef		NVIC_InitStruct;
    
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_TIM1,ENABLE);
    
    	GPIO_InitStruct.GPIO_Pin=GPIO_Pin_8;
    	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;
    	GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF_PP;
    	GPIO_Init(GPIOA,&GPIO_InitStruct);
        TIM_InitStruct.TIM_CounterMode=TIM_CounterMode_Up;
        TIM_InitStruct.TIM_Period=arr;
        TIM_InitStruct.TIM_Prescaler=psc;
        TIM_InitStruct.TIM_ClockDivision=TIM_CKD_DIV1;
        TIM_InitStruct.TIM_RepetitionCounter=0;
        TIM_TimeBaseInit(TIM1,&TIM_InitStruct);
    
        TIM_BdtrStruct.TIM_AutomaticOutput=TIM_AutomaticOutput_Disable;
        TIM_BdtrStruct.TIM_LOCKLevel=TIM_LOCKLevel_OFF;
        TIM_BdtrStruct.TIM_DeadTime=0;
        TIM_BdtrStruct.TIM_Break=TIM_Break_Disable;
        TIM_BdtrStruct.TIM_BreakPolarity=TIM_BreakPolarity_Low;
        TIM_BdtrStruct.TIM_OSSIState=TIM_OSSIState_Enable;
        TIM_BdtrStruct.TIM_OSSRState=TIM_OSSRState_Enable;
        TIM_BDTRConfig(TIM1,&TIM_BdtrStruct);
    
        TIM_OCInitStruct.TIM_OCMode=TIM_OCMode_PWM2;
        TIM_OCInitStruct.TIM_OutputState=TIM_OutputState_Enable;
        //TIM_OCInitStruct.TIM_OutputNState=TIM_OutputNState_Enable;
        TIM_OCInitStruct.TIM_Pulse=0;
        TIM_OCInitStruct.TIM_OCPolarity=TIM_OCPolarity_Low;
        //TIM_OCInitStruct.TIM_OCNPolarity=TIM_OCNPolarity_Low; 
        TIM_OCInitStruct.TIM_OCIdleState=TIM_OCIdleState_Set;
        TIM_OCInitStruct.TIM_OCNIdleState=TIM_OCNIdleState_Reset;
    	
        TIM_OC1Init(TIM1,&TIM_OCInitStruct);
    
        TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);
        TIM_ClearFlag(TIM1,TIM_FLAG_Update); 
        TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);
        TIM_GenerateEvent(TIM1,TIM_EventSource_Update);
        NVIC_InitStruct.NVIC_IRQChannel=TIM1_UP_IRQn;
        NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=2;
        NVIC_InitStruct.NVIC_IRQChannelSubPriority=0;
        NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
        NVIC_Init(&NVIC_InitStruct);
    
        TIM_SetCompare1(TIM1,0);
        TIM_CtrlPWMOutputs(TIM1,ENABLE);
        TIM_ARRPreloadConfig(TIM1,ENABLE);
        TIM_Cmd(TIM1,ENABLE);        //不要忘了
    }

**定时器8初始化：（通道2，PC8、7）（IO与通道号对应查看上表）**

void timer8_init(u16 arr,u16 psc)
    {
        GPIO_InitTypeDef		GPIO_InitStruct;
        TIM_TimeBaseInitTypeDef	TIM_InitStruct;
        TIM_BDTRInitTypeDef		TIM_BdtrStruct;
        TIM_OCInitTypeDef		TIM_OCInitStruct;
        NVIC_InitTypeDef		NVIC_InitStruct;
    
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_TIM8,ENABLE);
    
    	GPIO_InitStruct.GPIO_Pin=GPIO_Pin_7|GPIO_Pin_8;
    	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;
    	GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF_PP;
    	GPIO_Init(GPIOC,&GPIO_InitStruct);
    
        TIM_InitStruct.TIM_CounterMode=TIM_CounterMode_Up;
        TIM_InitStruct.TIM_Period=arr;
        TIM_InitStruct.TIM_Prescaler=psc;
        TIM_InitStruct.TIM_ClockDivision=TIM_CKD_DIV1;
        TIM_InitStruct.TIM_RepetitionCounter=0;
        TIM_TimeBaseInit(TIM8,&TIM_InitStruct);
    
        TIM_BdtrStruct.TIM_AutomaticOutput=TIM_AutomaticOutput_Disable;
        TIM_BdtrStruct.TIM_LOCKLevel=TIM_LOCKLevel_OFF;
        TIM_BdtrStruct.TIM_DeadTime=0;
        TIM_BdtrStruct.TIM_Break=TIM_Break_Disable;
        TIM_BdtrStruct.TIM_BreakPolarity=TIM_BreakPolarity_Low;
        TIM_BdtrStruct.TIM_OSSIState=TIM_OSSIState_Enable;
        TIM_BdtrStruct.TIM_OSSRState=TIM_OSSRState_Enable;
        TIM_BDTRConfig(TIM8,&TIM_BdtrStruct);
    
        TIM_OCInitStruct.TIM_OCMode=TIM_OCMode_PWM2;
        TIM_OCInitStruct.TIM_OutputState=TIM_OutputState_Enable;
        //TIM_OCInitStruct.TIM_OutputNState=TIM_OutputNState_Enable;
        TIM_OCInitStruct.TIM_Pulse=0;
        TIM_OCInitStruct.TIM_OCPolarity=TIM_OCPolarity_Low;
        //TIM_OCInitStruct.TIM_OCNPolarity=TIM_OCNPolarity_Low; 
        TIM_OCInitStruct.TIM_OCIdleState=TIM_OCIdleState_Set;
        TIM_OCInitStruct.TIM_OCNIdleState=TIM_OCNIdleState_Reset;
    	
        TIM_OC2Init(TIM8,&TIM_OCInitStruct);
        TIM_OC3Init(TIM8,&TIM_OCInitStruct);
    
        TIM_OC2PreloadConfig(TIM8,TIM_OCPreload_Enable);
    	TIM_OC3PreloadConfig(TIM8,TIM_OCPreload_Enable);
        TIM_ClearFlag(TIM8,TIM_FLAG_Update); 
        TIM_ITConfig(TIM8,TIM_IT_Update,ENABLE);
        TIM_GenerateEvent(TIM8,TIM_EventSource_Update);
        NVIC_InitStruct.NVIC_IRQChannel=TIM8_UP_IRQn;
        NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=2;
        NVIC_InitStruct.NVIC_IRQChannelSubPriority=0;
        NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
        NVIC_Init(&NVIC_InitStruct);
    
        TIM_SetCompare2(TIM8,0);
        TIM_SetCompare3(TIM8,0);
        TIM_CtrlPWMOutputs(TIM8,ENABLE);
        // TIM_CtrlPWMOutputs(TIM8,DISABLE);
        TIM_ARRPreloadConfig(TIM8,ENABLE);
        TIM_Cmd(TIM8,ENABLE);
    }

**中断**

//----------中断----------
    void TIM1_UP_IRQHandler(void)//TIM1中断
    {
       
        if(TIM_GetITStatus(TIM1,TIM_IT_Update)!=RESET)
        {
            TIM_ClearITPendingBit(TIM1, TIM_IT_Update);
        }
            
    }
    //----------中断----------
    void TIM8_UP_IRQHandler(void)//TIM1中断
    {
       
        if(TIM_GetITStatus(TIM8,TIM_IT_Update)!=RESET)
        {
            TIM_ClearITPendingBit(TIM8, TIM_IT_Update);
        }
            
    }

### 2、通用定时器设置（以tim3为例） ###

//TIM3 PWM部分初始化 
    //PWM输出初始化
    //arr：自动重装值
    //psc：时钟预分频数
    void TIM3_PWM_Init(u16 arr,u16 psc)
    {  
    	GPIO_InitTypeDef GPIO_InitStructure;
    	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    	TIM_OCInitTypeDef  TIM_OCInitStructure;
    	
     
    	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟
     	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
    	
    	GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer3部分重映射  TIM3_CH2->PB5    
     
       //设置该引脚为复用输出功能,输出TIM3 CH2的PWM脉冲波形	GPIOB.5
    	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //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
     
       //初始化TIM3
    	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 = 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
    	
    	//初始化TIM3 Channel2 PWM模式	 
    	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //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_OC2Init(TIM3, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC2
     
    	TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIM3在CCR2上的预装载寄存器
     
    	TIM_Cmd(TIM3, ENABLE);  //使能TIM3
    	
     
    }

**中断**

void TIM3_IRQHandler(void)
    {
        if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)
        {
            TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
            //ProcessInTimerX();            //不启用y轴，暂做编码盘使用
       		CodeDisk_Count();
    		//IO_MechanicalSWHandel();	//机械开关
    
        }
    }

### 3、调用 ###

int main(void)
     {		
    	  
    	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); 	 //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
    	uart_init(115200);	                     //串口初始化为115200
     	TIM3_PWM_Init(899,0);	                 //PWN3初始化
        timer8_init(9999,71);                 	 //PWN8初始化
    	timer1_init(9999,71);                 	 //PWN1初始化
        TIM_SetCompare2(TIM3,1000);              //设置斩波频率，0：为关闭，1000为斩波频率
        TIM_SetCompare1(TIM1,0);		
        TIM_SetCompare3(TIM8,5000); 
        TIM_SetCompare3(TIM8,5000);       
       	while(1)
    	{
    									 
    		   
    	}	 
     }

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