STM32日记之TIM1模块产生PWM(分别用库函数和寄存器).doc

C语言: TIM1模块产生PWM，带死区 //Step1.开启TIM和相应端口时钟//启动GPIORCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | \ RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD,\ ENABLE);//启动AFIORCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);//启动TIM1RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);//Step2. GPIO做相应设置，为AF输出//PA.8/9口设置为TIM1的OC1输出口GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8| GPIO_Pin_9;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_Init(GPIOA, GPIO_InitStructure);//PB.13/14口设置为TIM1_CH1N和TIM1_CH2N输出口GPIO_InitStructure.GPIO_Pin=GPIO_Pin_13| GPIO_Pin_14;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_Init(GPIOB, GPIO_InitStructure);//Step3. TIM模块初始化voidTIM_Configuration(void){ TIM_TimeBaseInitTypeDef TIM_BaseInitStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_BDTRInitTypeDef TIM_BDTRInitStructure; //TIM1基本计数器设置（设置PWM频率） //频率=TIM1_CLK/(ARR+1) TIM_BaseInitStructure.TIM_Period = 1000-1; TIM_BaseInitStructure.TIM_Prescaler = 72-1; TIM_BaseInitStructure.TIM_ClockDivision = 0; TIM_BaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_BaseInitStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM1, TIM_BaseInitStructure); //启用ARR的影子寄存器（直到产生更新事件才更改设置） TIM_ARRPreloadConfig(TIM1, ENABLE); //TIM1_OC1模块设置（设置1通道占空比） TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; TIM_OCInitStructure.TIM_Pulse = 120; //TIM1_Pulse设置了待装入捕获比较寄存器的脉冲值 TIM_OC1Init(TIM1, TIM_OCInitStructure); //启用CCR1寄存器的影子寄存器（直到产生更新事件才更改设置） TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); //TIM2_OC