STM32日记之TIM1模块产生PWM

1、C语言：TIM1模块产生PWM带死区/Stepl.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 A

2、F 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_1

3、4;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_TimeBaseInitTypeDefTIM_BaseInitStructure;TIM_OCInitTypeDefTIM_OCInitStructure;TIM_BDTRInitTypeDefTIM_BDTRInitStructure;/T

4、IM1 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_BaseIn

5、itStructure);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_OutputState=TIM_OutputState_Enable;TIM_OCInitStructure.TIM_OutputNState=TIM_OutputNState_Enable;TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;TIM_OCInitStructure.TIM_

6、OCNPolarity=TIM_OCNPolarity_High;TIM_OCInitStructure.TIM_Pulse=120;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_OC2 模块设置(设置 2 通道占空比)TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;TIM_OCInitStructure.TIM_Outpu

7、tNState=TIM_OutputNState_Enable;TIM_OCInitStructure.TIM_Pulse=680;TIM_OC2Init(TIM1,&TIM_OCInitStructure);启用 CCR2 寄存器的影子寄存器(直到产生更新事件才更改设置)TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);死区设置TIM_BDTRInitStructure.TIM_OSSRState=TIM_OSSRState_Enable;TIM_BDTRInitStructure.TIM_OSSIState=TIM_OSSIState_Enable;TIM_BDTRInitStructure.TIM_LOCKLevel=TIM_LOCKLevel_OFF;TIM_BDTRInitStructure.TIM_Break=TIM_Break_Disable;TIM_BDTRInitStructure.TIM_BreakPolarity=TIM_BreakPolarity_High;TIM_BDTRInitStructure.TIM_AutomaticOutput=TIM_AutomaticOutput_Enable;TIM_B