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	 > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > STM32 通用定時(shí)器的幾種配置方式
          
    
          

          

          


	
	
	

          
	
          
		
          
			
          STM32 通用定時(shí)器的幾種配置方式
          
						
          
				作者：
				時(shí)間：2016-11-25
				來(lái)源：網(wǎng)絡(luò)
				
				
				
				
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			1、普通定時(shí)使用
          本文引用地址：http://www.ex-cimer.com/article/201611/321303.htm
          #include"stm32f10x.h"
          #include"time.h"


          static Time_NVIC_Config(void)
          {
           NVIC_InitTypeDef NVIC_InitStructure;

           NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);
           NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
           NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
           NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
           NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
           NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
           NVIC_Init(&NVIC_InitStructure);
          }


          static void Time_Config(void)
          {
           TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
           RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE);
           //TIM_DeInit(TIM2);
           TIM_TimeBaseInitStructure.TIM_Prescaler =(10000-1); //時(shí)鐘分頻系數(shù)
           TIM_TimeBaseInitStructure.TIM_Period =(7200-1);  //自動(dòng)重裝寄存器
           TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上計(jì)數(shù)模式
           TIM_TimeBaseInitStructure.TIM_ClockDivision =0;  //時(shí)鐘分割,這里不涉及
          #if 0
           TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
          #endif
           TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置參數(shù)
           TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中斷標(biāo)示位
           TIM_ITConfig(TIMx,TIM_IT_Update,ENABLE); //中斷配置
           TIM_Cmd(TIMx,ENABLE); //啟動(dòng)定時(shí)器
          }


          void Time_Init(void)
          {
           Time_Config(); //定時(shí)器配置
           Time_NVIC_Config(); //嵌套中斷向量初始化
          }
          2、PWM輸出
          #include"stm32f10x.h"
          #include"time.h"

          #if 0

          static Time_NVIC_Config(void)
          {
           NVIC_InitTypeDef NVIC_InitStructure;

           NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);
           NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
           NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
           NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
           NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
           NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
           NVIC_Init(&NVIC_InitStructure);
          }
          #endif


          void Time_OUT_PWM_GPIO_Config(void)
          {
           GPIO_InitTypeDef GPIO_InitStructure;
           RCC_APB2PeriphClockCmd(TIMx_OUT_GPIO_RCC,ENABLE);
           GPIO_InitStructure.GPIO_Pin =TIMx_OUT_Pin;
           GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP; //復(fù)用推免式輸出
           GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
           GPIO_Init(TIMx_OUT_Port, &GPIO_InitStructure);
          }


          static void Time_OUT_PWM_Config(void)
          {
           TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
           TIM_OCInitTypeDef TIM_OCInitStructure;
           RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE); //開啟時(shí)鐘
           TIM_DeInit(TIM2);

           TIM_TimeBaseInitStructure.TIM_Prescaler =(100-1); //時(shí)鐘分頻系數(shù)
           TIM_TimeBaseInitStructure.TIM_Period =(1000-1);  //自動(dòng)重裝寄存器 PWM頻率:72M/100/1000=720Hz
           TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上計(jì)數(shù)模式
           TIM_TimeBaseInitStructure.TIM_ClockDivision =0;  //時(shí)鐘分頻,這里不涉及
          #ifdef Time1
           TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
          #endif
           TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置參數(shù)
           TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中斷標(biāo)示位


           TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_PWM1; //PWM1模式 OCx電平根據(jù)ARR與CCRx比較結(jié)果發(fā)生反轉(zhuǎn)
           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道1
          #ifdef Time1
           TIM_OCInitStructure.TIM_OutputNState =;
          #endif
           TIM_OCInitStructure.TIM_Pulse =CCR1_VAL; //占空比800/1000
           TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_Low; //計(jì)數(shù)器值小于CCR值時(shí)輸出高電平
          #ifdef Time1
           TIM_OCInitStructure.TIM_OCNPolarity =;
           TIM_OCInitStructure.TIM_OCIdleState =;
           TIM_OCInitStructure.TIM_OCNIdleState =;
          #endif

           TIM_OC1Init(TIMx,&TIM_OCInitStructure);
           TIM_OC1PreloadConfig(TIMx,TIM_OCPreload_Enable); //使能CCR1預(yù)裝載

           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道2
           TIM_OCInitStructure.TIM_Pulse =CCR2_VAL;

           TIM_OC2Init(TIMx,&TIM_OCInitStructure);
           TIM_OC2PreloadConfig(TIMx,TIM_OCPreload_Enable);

           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道3
           TIM_OCInitStructure.TIM_Pulse =CCR3_VAL;
           TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_High;

           TIM_OC3Init(TIMx,&TIM_OCInitStructure);
           TIM_OC3PreloadConfig(TIMx,TIM_OCPreload_Enable);

           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道4
           TIM_OCInitStructure.TIM_Pulse =CCR4_VAL;

           TIM_OC4Init(TIMx,&TIM_OCInitStructure);
           TIM_OC4PreloadConfig(TIMx,TIM_OCPreload_Enable);
           TIM_ARRPreloadConfig(TIMx,ENABLE); //開啟ARR預(yù)裝載
           TIM_Cmd(TIMx,ENABLE); //啟動(dòng)定時(shí)器
          }


          void Time_OUT_PWM_Init(void)
          {
           Time_OUT_PWM_GPIO_Config();
           Time_OUT_PWM_Config(); //定時(shí)器配置
          }
           3、輸出比較模式
          #include"stm32f10x.h"
          #include"time.h"


          static Time_NVIC_Config(void)
          {
           NVIC_InitTypeDef NVIC_InitStructure;

           NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);
           NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
           NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
           NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
           NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
           NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
           NVIC_Init(&NVIC_InitStructure);
          }


          static void Time_OUT_PWM_GPIO_Config(void)
          {
           GPIO_InitTypeDef GPIO_InitStructure;
           RCC_APB2PeriphClockCmd(TIMx_OUT_GPIO_RCC,ENABLE);
           GPIO_InitStructure.GPIO_Pin =TIMx_OUT_Pin;
           GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP; //復(fù)用推免式輸出
           GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;
           GPIO_Init(TIMx_OUT_Port, &GPIO_InitStructure);
          }


          static void Time_GPIO_Config(void)
          {
           GPIO_InitTypeDef GPIO_InitStructure;
           RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);
           GPIO_InitStructure.GPIO_Pin =GPIO_Pin_1;
           GPIO_InitStructure.GPIO_Mode =GPIO_Mode_Out_PP; //通用推免式輸出
           GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
           GPIO_Init(GPIOD, &GPIO_InitStructure);
          }


          static void Time_OUT_PWM_Config(void)
          {
           TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
           TIM_OCInitTypeDef TIM_OCInitStructure;
           RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE); //開啟時(shí)鐘
           TIM_DeInit(TIM2);

           TIM_TimeBaseInitStructure.TIM_Prescaler =(100-1); //時(shí)鐘分頻系數(shù)
           TIM_TimeBaseInitStructure.TIM_Period =(1000-1);  //自動(dòng)重裝寄存器 PWM頻率:72M/100/1000=720Hz
           TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上計(jì)數(shù)模式
           TIM_TimeBaseInitStructure.TIM_ClockDivision =0;  //時(shí)鐘分頻,這里不涉及
          #ifdef Time1
           TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
          #endif
           TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置參數(shù)
           TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中斷標(biāo)示位


           TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Inactive; //ARR與CCRx相同時(shí)強(qiáng)制OCxREF為低
           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道1
          #ifdef Time1
           TIM_OCInitStructure.TIM_OutputNState =;
          #endif
           TIM_OCInitStructure.TIM_Pulse =CCR1_VAL;
           TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_High; //OCx=!OCxREF _High OCx=OCxREF
          #ifdef Time1
           TIM_OCInitStructure.TIM_OCNPolarity =;
           TIM_OCInitStructure.TIM_OCIdleState =;
           TIM_OCInitStructure.TIM_OCNIdleState =;
          #endif

           TIM_OC1Init(TIMx,&TIM_OCInitStructure);
           TIM_OC1PreloadConfig(TIMx,TIM_OCPreload_Enable); //使能CCR1預(yù)裝載
           TIM_ITConfig(TIMx,TIM_IT_CC1,ENABLE); //使能OC1比較中斷

           TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Active; //ARR與CCRx相同時(shí)強(qiáng)制OCxREF為高
           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道2
           TIM_OCInitStructure.TIM_Pulse =CCR2_VAL;
           TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_Low; //OCx=!OCxREF _High OCx=OCxREF

           TIM_OC2Init(TIMx,&TIM_OCInitStructure);
           TIM_OC2PreloadConfig(TIMx,TIM_OCPreload_Enable);
           TIM_ITConfig(TIMx,TIM_IT_CC2,ENABLE);

           TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Timing; //ARR與CCRx比較結(jié)果對(duì)OCxREF無(wú)效
           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道3
           TIM_OCInitStructure.TIM_Pulse =CCR3_VAL;
           TIM_ITConfig(TIMx,TIM_IT_CC3,ENABLE);

           TIM_OC3Init(TIMx,&TIM_OCInitStructure);
           TIM_OC3PreloadConfig(TIMx,TIM_OCPreload_Enable);

           TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_PWM1; //ARR與CCRx比較結(jié)果對(duì)OCxREF采用PWM1模式
           TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道4
           TIM_OCInitStructure.TIM_Pulse =CCR4_VAL;
           //TIM_ITConfig(TIMx,TIM_IT_CC4,ENABLE);  //PWM就沒有必要設(shè)置中斷 當(dāng)然也可以在中斷里面改變占空比
           TIM_OC4Init(TIMx,&TIM_OCInitStructure);
           TIM_OC4PreloadConfig(TIMx,TIM_OCPreload_Enable);
           TIM_ARRPreloadConfig(TIMx,ENABLE); //開啟ARR預(yù)裝載
           TIM_Cmd(TIMx,ENABLE); //啟動(dòng)定時(shí)器
          }


          void Time_OUT_PWM_Init(void)
          {
           Time_OUT_PWM_GPIO_Config();
           Time_GPIO_Config();
           Time_NVIC_Config();
           Time_OUT_PWM_Config(); //定時(shí)器配置
          }
          4、PWMI模式
          #include"stm32f10x.h"
          #include"time.h"


          static Time_NVIC_Config(void)
          {
           NVIC_InitTypeDef NVIC_InitStructure;

           NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);
           NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
           NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
           NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
           NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
           NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
           NVIC_Init(&NVIC_InitStructure);
          }
          				   
				
            
          
                
			
							
          
                
			            
          
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