包括重映射、不需重映射的PWM输出
单片机源程序如下:
- #include "pwm.h"
- #include "led.h"
- //PWM输出初始化
- //arr:自动重装值
- //psc:时钟预分频数
- void TIM1_1PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);// 使能TIM1时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM1 CH1的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; //TIM_CH1
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- 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_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC1Init(TIM1, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM1,ENABLE); //MOE 主输出使能
- TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM1, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM1, ENABLE); //使能TIM1
-
-
- }
- void TIM1_2PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);// 使能TIM1时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM1 CH1的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //TIM_CH1
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- 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_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC2Init(TIM1, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM1,ENABLE); //MOE 主输出使能
- TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM1, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM1, ENABLE); //使能TIM1
-
-
- }
- void TIM1_3PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);// 使能TIM1时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM1 CH1的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //TIM_CH1
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- 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_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC3Init(TIM1, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM1,ENABLE); //MOE 主输出使能
- TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM1, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM1, ENABLE); //使能TIM1
-
-
- }
- void TIM1_4PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);// 使能TIM1时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM1 CH1的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; //TIM_CH4
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- 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_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC4Init(TIM1, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM1,ENABLE); //MOE 主输出使能
- TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM1, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM1, ENABLE); //使能TIM1
-
-
- }
- void TIM8_1PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);// 使能TIM8时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM1 CH1的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //TIM_CH1
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM8, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式1
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
- TIM_OCInitStructure.TIM_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC1Init(TIM8, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM8,ENABLE); //MOE 主输出使能
- TIM_OC1PreloadConfig(TIM8, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM8, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM8, ENABLE); //使能TIM1
-
-
- }
- void TIM8_2PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);// 使能TIM8时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM1 CH1的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; //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(GPIOC, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM8, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式1
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
- TIM_OCInitStructure.TIM_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC2Init(TIM8, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM8,ENABLE); //MOE 主输出使能
- TIM_OC2PreloadConfig(TIM8, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM8, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM8, ENABLE); //使能TIM1
-
-
- }
- void TIM8_3PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);// 使能TIM8时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM8 CH3的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; //TIM_CH3
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM8, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式1
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
- TIM_OCInitStructure.TIM_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC3Init(TIM8, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM8,ENABLE); //MOE 主输出使能
- TIM_OC3PreloadConfig(TIM8, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM8, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM8, ENABLE); //使能TIM1
-
-
- }
- void TIM8_4PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);// 使能TIM8时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE); //使能GPIO外设时钟使能
-
- //设置该引脚为复用输出功能,输出TIM8 CH3的PWM脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //TIM_CH3
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
-
- 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 80K
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
- 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(TIM8, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式1
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
- TIM_OCInitStructure.TIM_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
- TIM_OC4Init(TIM8, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
- TIM_CtrlPWMOutputs(TIM8,ENABLE); //MOE 主输出使能
- TIM_OC4PreloadConfig(TIM8, TIM_OCPreload_Enable); //CH1预装载使能
-
- TIM_ARRPreloadConfig(TIM8, ENABLE); //使能TIMx在ARR上的预装载寄存器
-
- TIM_Cmd(TIM8, ENABLE); //使能TIM1
-
-
- }
- void TIM2_3PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
-
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //使能定时器2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_PartialRemap2_TIM2, ENABLE); //Timer2部分重映射 TIM2_CH3->PB10
-
- //设置该引脚为复用输出功能,输出TIM3 CH2的PWM脉冲波形 GPIOB.10
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //TIM_CH3
- 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TIM2
- 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(TIM2, &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TIM2 Channel3 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_OC3Init(TIM2, &TIM_OCInitStructure); //根据T指定的参数初始化外设TIM2 OC3
- TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable); //使能TIM3在CCR2上的预装载寄存器
-
- TIM_Cmd(TIM2, ENABLE); //使能TIM3
-
-
- }
- void TIM2_4PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
-
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //使能定时器2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_PartialRemap2_TIM2, ENABLE); //Timer2部分重映射 TIM2_CH3->PB10
-
- //设置该引脚为复用输出功能,输出TIM3 CH2的PWM脉冲波形 GPIOB.10
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; //TIM_CH3
- 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TIM2
- 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(TIM2, &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TIM2 Channel3 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_OC4Init(TIM2, &TIM_OCInitStructure); //根据T指定的参数初始化外设TIM2 OC3
- TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Enable); //使能TIM3在CCR2上的预装载寄存器
-
- TIM_Cmd(TIM2, ENABLE); //使能TIM3
-
- }
- void TIM3_2PWM_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
-
-
-
-
-
- }
复制代码- #include "led.h"
- #include "delay.h"
- #include "sys.h"
- #include "pwm.h"
- int main(void)
- {
- //u16 led0pwmval=0;
- //u8 dir=1;
- delay_init(); //延时函数初始化
- LED_Init(); //初始化与LED连接的硬件接口
- TIM1_1PWM_Init(199,7199);
- TIM1_2PWM_Init(49,719);
-
- TIM1_3PWM_Init(49,719);
- TIM1_4PWM_Init(49,719);
-
- TIM8_1PWM_Init(1999,719);
- TIM8_2PWM_Init(1999,719);
-
- TIM8_3PWM_Init(1999,719);
- TIM8_4PWM_Init(1999,719);
-
- TIM2_3PWM_Init(1999,719);
- TIM2_4PWM_Init(1999,719);
- TIM3_2PWM_Init(1999,719);
-
- TIM_SetCompare1(TIM1,20);
- TIM_SetCompare2(TIM1,25);
-
- TIM_SetCompare3(TIM1,25);
- TIM_SetCompare4(TIM1,25);
-
- TIM_SetCompare1(TIM8,1000);
- TIM_SetCompare2(TIM8,1000);
-
- TIM_SetCompare3(TIM8,1000);
- TIM_SetCompare4(TIM8,1000);
-
- TIM_SetCompare3(TIM2,1000);
- TIM_SetCompare4(TIM2,1000);
- TIM_SetCompare2(TIM3,1000);
- }
复制代码
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PWM 11channel.7z
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