PWM of STM32
下面是STM32用来产生PWM得文件，分别是PWM.c和PWM.h
/************************************************************************** * 文件名：PWM.h * * 编写人：离逝的风 * * 更新时间：2018.12.9 * * 说明：此文件属于开源，所有权对任何人开放 * * 如有问题请联系邮箱：1477153217@qq.com * * * * PWM是用定时器产生占空比可调的波形，基本配置步骤如下： * * 1.开启通道，即设置PWMx_CHy_EN为1即可 * * 2.设置通道引脚映射，下面表中有详细说明，TIM1_PWM_CH * * 3.设置PWM分频系数，TIM1_PWM_PSC * * 4.设置重装值 TIM1_PWM_ARR * * 5.设置比较值 TIM1_CH1_CCR1 * * 6.在主函数中调用PWMx_CHy_Init来初始化通道 * * 说明：占空比R=(ARR-CCRx)/ARR * ***************************************************************************/ #ifndef __PWM_H #define __PWM_H #include "stm32f10x.h" /*#############################下面为PWM通道引脚定义############################################################### 说明：通道选择 ------------------------------------------------------------------------------------------------------------------- TIM1_PWM_CH: [0] ETR->PA12 CH1->PA8 CH2->PA9 CH3->PA10 CH4->PA11 BKIN->PB12 CH1N->PB13 CH2N->PB14 CH3N->PB15 [1] ETR->PA12 CH1->PA8 CH2->PA9 CH3->PA10 CH4->PA11 BKIN->PA6 CH1N->PA7 CH2N->PB0 CH3N->PB1 [2] 未分组 [3] ETR->PE7 CH1->PE9 CH2->PE11 CH3->PE13 CH4->PE14 BKIN->PE15 CH1N->PE8 CH2N->PE10 CH3N->PE12 ------------------------------------------------------------------------------------------------------------------- TIM2_PWM_CH: [0] ETR->PA0 CH1->PA0 CH2->PA1 CH3->PA2 CH4->PA3 [1] ETR->PA15 CH1->PA15 CH2->PB3 CH3->PA2 CH4->PA3 [2] ETR->PA0 CH1->PA0 CH2->PA1 CH3->PB10 CH4->PB11 [3] ETR->PA15 CH1->PA15 CH2->PB3 CH3->PB10 CH4->PB11 ------------------------------------------------------------------------------------------------------------------- TIM3_PWM_CH: [0] CH1->PA6 CH2->PA7 CH3->PB0 CH4->PB1 [1] 未分组 [2] CH1->PB4 CH2->PB5 CH3->PB0 CH4->PB1 [3] CH1->PC6 CH2->PC7 CH3->PC8 CH4->PC9 ------------------------------------------------------------------------------------------------------------------- TIM4_PWM_CH: [0] CH1->PB6 CH2->PB7 CH3->PB8 CH4->PB9 [1] CH1->PD12 CH2->PD13 CH3->PD14 CH4->PD15 ------------------------------------------------------------------------------------------------------------------- TIM5_PWM_CH: [0] CH4->PA3 [1] CH4->LSI 注：LSI为内部时钟震荡器 -------------------------------------------------------------------------------------------------------------------*/ /**############################下面为文件配置，根据用更改##########################################################**/ //开启功能设置1，否则设置0 #define PWM1_CH1_EN 0 #define PWM1_CH2_EN 0 #define PWM1_CH3_EN 0 #define PWM1_CH4_EN 0 #define PWM2_CH1_EN 0 #define PWM2_CH2_EN 0 #define PWM2_CH3_EN 0 #define PWM2_CH4_EN 0 #define PWM3_CH1_EN 0 #define PWM3_CH2_EN 0 #define PWM3_CH3_EN 0 #define PWM3_CH4_EN 0 #define PWM4_CH1_EN 0 #define PWM4_CH2_EN 0 #define PWM4_CH3_EN 0 #define PWM4_CH4_EN 0 #define PWM5_CH4_EN 0 /*############################下面是引脚修改部分，默认0###########################################################*/ #define TIM1_PWM_CH 0 #define TIM2_PWM_CH 0 #define TIM3_PWM_CH 2 #define TIM4_PWM_CH 0 #define TIM5_PWM_CH 0 /***************************下面为预分频器值，PSC********************************************************************/ //注：PSC的值决定PWM的时钟频率 #define TIM1_PWM_PSC 7199 #define TIM2_PWM_PSC 7199 #define TIM3_PWM_PSC 7199 #define TIM4_PWM_PSC 7199 #define TIM5_PWM_PSC 7199 /***************************下面为自动重装值，ARR***************************************************************/ //注：ARR的值和CCRx值共同决定PWM的占空比，占空比R=(ARR-CCRx)/ARR #define TIM1_PWM_ARR 100 #define TIM2_PWM_ARR 100 #define TIM3_PWM_ARR 100 #define TIM4_PWM_ARR 100 #define TIM5_PWM_ARR 100 /**************************下面为捕获比较寄存器值，CCRx*********************************************************/ //注：ARR的值和CCRx值共同决定PWM的占空比，占空比R=(ARR-CCRx)/ARR #define TIM1_CH1_CCR1 10 #define TIM1_CH2_CCR2 10 #define TIM1_CH3_CCR3 10 #define TIM1_CH4_CCR4 10 #define TIM2_CH1_CCR1 10 #define TIM2_CH2_CCR2 10 #define TIM2_CH3_CCR3 10 #define TIM2_CH4_CCR4 10 #define TIM3_CH1_CCR1 10 #define TIM3_CH2_CCR2 10 #define TIM3_CH3_CCR3 10 #define TIM3_CH4_CCR4 10 #define TIM4_CH1_CCR1 10 #define TIM4_CH2_CCR2 10 #define TIM4_CH3_CCR3 10 #define TIM4_CH4_CCR4 10 #define TIM5_CH4_CCR1 10 /*#############################下面为函数接，供用户使用#########################################################*/ //备注：用户可以直接PSC寄存器值来改变频率 /*----------------------PWM1----------------------------------*/ #if(PWM1_CH1_EN==1) void PWM1_CH1_Init(void); #endif #if(PWM1_CH2_EN==1) void PWM1_CH2_Init(void); #endif #if(PWM1_CH3_EN==1) void PWM1_CH3_Init(void); #endif #if(PWM1_CH4_EN==1) void PWM1_CH4_Init(void); #endif /*----------------------PWM2----------------------------------*/ #if(PWM2_CH1_EN==1) void PWM2_CH1_Init(void); #endif #if(PWM2_CH2_EN==1) void PWM2_CH2_Init(void); #endif #if(PWM2_CH3_EN==1) void PWM2_CH3_Init(void); #endif #if(PWM2_CH4_EN==1) void PWM2_CH4_Init(void); #endif /*----------------------PWM3----------------------------------*/ #if(PWM3_CH1_EN==1) void PWM3_CH1_Init(void); #endif #if(PWM3_CH2_EN==1) void PWM3_CH2_Init(void); #endif #if(PWM3_CH3_EN==1) void PWM3_CH3_Init(void); #endif #if(PWM3_CH4_EN==1) void PWM3_CH4_Init(void); #endif /*----------------------PWM4----------------------------------*/ #if(PWM4_CH1_EN==1) void PWM4_CH1_Init(void); #endif #if(PWM4_CH2_EN==1) void PWM4_CH2_Init(void); #endif #if(PWM4_CH3_EN==1) void PWM4_CH3_Init(void); #endif #if(PWM4_CH4_EN==1) void PWM4_CH4_Init(void); #endif /*----------------------PWM5----------------------------------*/ #if(PWM5_CH4_EN==1) void PWM5_CH4_Init(void); #endif #endif //FILE END
/************************************************************************** * 文件名：PWM.c * * 编写人：离逝的风 * * 更新时间：2018.12.9 * * 说明：此文件属于开源，所有权对任何人开放 * * 如有问题请联系邮箱：1477153217@qq.com * * * * PWM是用定时器产生占空比可调的波形，基本配置步骤如下： * * 1.开启通道，即设置PWMx_CHy_EN为1即可 * * 2.设置通道引脚映射，下面表中有详细说明，TIM1_PWM_CH * * 3.设置PWM分频系数，TIM1_PWM_PSC * * 4.设置重装值 TIM1_PWM_ARR * * 5.设置比较值 TIM1_CH1_CCR1 * * 6.在主函数中调用PWMx_CHy_Init来初始化通道 * * 说明：占空比R=(ARR-CCRx)/ARR * ***************************************************************************/ #include "PWM.h" /*###############################下面为TIM1实现PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM1_CH1_EN==1) void PWM1_CH1_Init(void) { RCC->APB2ENR|=(1<<11); //开启TIM1时钟 //下面为映射引脚配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRH&=0XFFFFFFF0; //清除PA8之前配置位 GPIOA->CRH|=0X0000000B; //配置PA8为复用推挽输出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO时钟 GPIOE->CRH&=0XFFFFFF0F; //清除PE9之前配置位 GPIOE->CRH|=0X000000B0; //配置PE9为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定义引脚重映射，设置PWM1相应引脚 TIM1->CR1|=(1<<7); //使能自动重装寄存器 TIM1->PSC|=(TIM1_PWM_PSC); //设置预分频值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //设置ARR为TIM1_ARR TIM1->CCR1&=0x00; TIM1->CCR1|=TIM1_CH1_CCR1; //设置翻转周期计时长度 TIM1->CCMR1|=(6<<4)|(1<<3); //使能CH1和设置CH1为模式1 TIM1->CCER|=(1<<0); //CH1使能输出 TIM1->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM1_CH2_EN==1) void PWM1_CH2_Init(void) { RCC->APB1ENR|=(1<<0); //开启TIM1时钟 //下面为映射引脚配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRH&=0XFFFFFF0F; //清除PA9之前配置位 GPIOA->CRH|=0X000000B0; //配置PA9为复用推挽输出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO时钟 GPIOE->CRH&=0XFFFF0FFF; //清除PE11之前配置位 GPIOE->CRH|=0X0000B000; //配置PE11为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定义引脚重映射，设置PWM1相应引脚 TIM1->CR1|=(1<<7); //使能自动重装寄存器 TIM1->PSC|=(TIM1_PWM_PSC); //设置预分频值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //设置ARR为TIM1_ARR TIM1->CCR2&=0x00; TIM1->CCR2|=TIM1_CH2_CCR2; //设置翻转周期计时长度 TIM1->CCMR1|=(6<<12)|(1<<11); //使能CH2和设置CH2为模式1 TIM1->CCER|=(1<<4); //CH2使能输出 TIM1->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM1_CH3_EN==1) void PWM1_CH3_Init(void) { RCC->APB2ENR|=(1<<11); //开启TIM1时钟 //下面为映射引脚配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRH&=0XFFFFF0FF; //清除PA10之前配置位 GPIOA->CRH|=0X00000B00; //配置PA10为复用推挽输出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO时钟 GPIOE->CRH&=0XFF0FFFFF; //清除PE13之前配置位 GPIOE->CRH|=0X00B00000; //配置PE13为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定义引脚重映射，设置PWM1相应引脚 TIM1->CR1|=(1<<7); //使能自动重装寄存器 TIM1->PSC|=(TIM1_PWM_PSC); //设置预分频值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //设置ARR为TIM1_ARR TIM1->CCR3&=0x00; TIM1->CCR3|=TIM1_CH3_CCR3; //设置翻转周期计时长度 TIM1->CCMR2|=(6<<4)|(1<<3); //使能CH3和设置CH3为模式1 TIM1->CCER|=(1<<8); //CH3使能输出 TIM1->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM1_CH4_EN==1) void PWM1_CH4_Init(void) { RCC->APB2ENR|=(1<<11); //开启TIM1时钟 //下面为映射引脚配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRH&=0XFFFF0FFF; //清除PA11之前配置位 GPIOA->CRH|=0X0000B000; //配置PA11为复用推挽输出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO时钟 GPIOE->CRH&=0XF0FFFFFF; //清除PE14之前配置位 GPIOE->CRH|=0X0B000000; //配置PE14为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定义引脚重映射，设置PWM1相应引脚 TIM1->CR1|=(1<<7); //使能自动重装寄存器 TIM1->PSC|=(TIM1_PWM_PSC); //设置预分频值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //设置ARR为TIM1_ARR TIM1->CCR4&=0x00; TIM1->CCR4|=TIM1_CH4_CCR4; //设置翻转周期计时长度 TIM1->CCMR2|=(6<<12)|(1<<11); //使能CH3和设置CH3为模式1 TIM1->CCER|=(1<<12); //CH3使能输出 TIM1->CR1|=(1<<0); //开始计数 } #endif /*###############################下面为TIM2实现PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM2_CH1_EN==1) void PWM2_CH1_Init(void) { RCC->APB1ENR|=(1<<0); //开启TIM2时钟 //下面为映射引脚配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==2) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRL&=0XFFFFFFF0; //清除PA0之前配置位 GPIOA->CRL|=0X0000000B; //配置PA0为复用推挽输出 #endif #if(TIM2_PWM_CH==1||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRH&=0X0FFFFFFF; //清除PA15之前配置位 GPIOA->CRH|=0XB0000000; //配置P15为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<8); //定义引脚重映射，设置PWM2相应引脚 TIM2->CR1|=(1<<7); //使能自动重装寄存器 TIM2->PSC|=(TIM2_PWM_PSC); //设置预分频值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //设置ARR为TIM1_ARR TIM2->CCR1&=0x00; TIM2->CCR1|=TIM2_CH1_CCR1; //设置翻转周期计时长度 TIM2->CCMR1|=(6<<4)|(1<<3); //使能CH1和设置CH1为模式1 TIM2->CCER|=(1<<0); //CH1使能输出 TIM2->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM2_CH2_EN==1) void PWM2_CH2_Init(void) { RCC->APB1ENR|=(1<<0); //开启TIM2时钟 //下面为映射引脚配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==2) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRL&=0XFFFFFF0F; //清除PA1之前配置位 GPIOA->CRL|=0X000000B0; //配置PA1为复用推挽输出 #endif #if(TIM2_PWM_CH==1||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0XFFFF0FFF; //清除PB3之前配置位 GPIOB->CRL|=0X0000B000; //配置PB3为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<8); //定义引脚重映射，设置PWM2相应引脚 TIM2->CR1|=(1<<7); //使能自动重装寄存器 TIM2->PSC|=(TIM2_PWM_PSC); //设置预分频值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //设置ARR为TIM1_ARR TIM2->CCR2&=0x00; TIM2->CCR2|=TIM2_CH2_CCR2; //设置翻转周期计时长度 TIM2->CCMR1|=(6<<12)|(1<<11); //使能CH2和设置CH2为模式1 TIM2->CCER|=(1<<4); //CH2使能输出 TIM2->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM2_CH3_EN==1) void PWM2_CH3_Init(void) { RCC->APB1ENR|=(1<<0); //开启TIM2时钟 //下面为映射引脚配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRH&=0XFFFFF0FF; //清除PA2之前配置位 GPIOA->CRH|=0X00000B00; //配置PA2为复用推挽输出 #endif #if(TIM2_PWM_CH==2||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRH&=0XFFFFF0FF; //清除PB10之前配置位 GPIOB->CRH|=0X00000B00; //配置PB10为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<8); //定义引脚重映射，设置PWM2相应引脚 TIM2->CR1|=(1<<7); //使能自动重装寄存器 TIM2->PSC|=(TIM2_PWM_PSC); //设置预分频值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //设置ARR为TIM1_ARR TIM2->CCR3&=0x00; TIM2->CCR3|=TIM2_CH3_CCR3; //设置翻转周期计时长度 TIM2->CCMR2|=(6<<4)|(1<<3); //使能CH3和设置CH3为模式1 TIM2->CCER|=(1<<8); //CH3使能输出 TIM2->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM2_CH4_EN==1) void PWM2_CH4_Init(void) { RCC->APB1ENR|=(1<<0); //开启TIM2时钟 //下面为映射引脚配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRL&=0XFFFF0FFF; //清除PA3之前配置位 GPIOA->CRL|=0X0000B000; //配置PA3为复用推挽输出 #endif #if(TIM2_PWM_CH==2||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRH&=0XFFFF0FFF; //清除PB11之前配置位 GPIOB->CRH|=0X0000B000; //配置PB11为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<6); //定义引脚重映射，设置PWM2相应引脚 TIM2->CR1|=(1<<7); //使能自动重装寄存器 TIM2->PSC|=(TIM2_PWM_PSC); //设置预分频值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //设置ARR为TIM1_ARR TIM2->CCR4&=0x00; TIM2->CCR4|=TIM2_CH4_CCR4; //设置翻转周期计时长度 TIM2->CCMR2|=(6<<12)|(1<<11); //使能CH3和设置CH3为模式1 TIM2->CCER|=(1<<12); //CH3使能输出 TIM2->CR1|=(1<<0); //开始计数 } #endif /*###############################下面为TIM3实现PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM3_CH1_EN==1) void PWM3_CH1_Init(void) { RCC->APB1ENR|=(1<<1); //开启TIM3时钟 //下面为映射引脚配置 #if(TIM3_PWM_CH==0) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRL&=0XF0FFFFFF; //清除PA6之前配置位 GPIOA->CRL|=0X0B000000; //配置PA6为复用推挽输出 #endif #if(TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0XFFF0FFFF; //清除PB4之前配置位 GPIOB->CRL|=0X000B0000; //配置PB4为复用推挽输出 #endif #if(TIM3_PWM_CH==3) RCC->APB2ENR|=(1<<4)|(1<<0); //使能GPIOC和AFIO时钟 GPIOC->CRL&=0XF0FFFFFF; //清除PC6之前配置位 GPIOC->CRL|=0X0B000000; //配置PC6为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<10); //定义引脚重映射，设置PWM3相应引脚 TIM3->CR1|=(1<<7); //使能自动重装寄存器 TIM3->PSC|=(TIM3_PWM_PSC); //设置预分频值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //设置ARR为TIM1_ARR TIM3->CCR1&=0x00; TIM3->CCR1|=TIM3_CH1_CCR1; //设置翻转周期计时长度 TIM3->CCMR1|=(6<<4)|(1<<3); //使能CH1和设置CH1为模式1 TIM3->CCER|=(1<<0); //CH1使能输出 TIM3->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM3_CH2_EN==1) void PWM3_CH2_Init(void) { RCC->APB1ENR|=(1<<1); //开启TIM3时钟 //下面为映射引脚配置 #if(TIM3_PWM_CH==0) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRL&=0X0FFFFFFF; //清除PA7之前配置位 GPIOA->CRL|=0XB0000000; //配置PA7为复用推挽输出 #endif #if(TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0XFF0FFFFF; //清除PB5之前配置位 GPIOB->CRL|=0X00B00000; //配置PB5为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<10); //定义引脚重映射，设置PWM3相应引脚 TIM3->CR1|=(1<<7); //使能自动重装寄存器 TIM3->PSC|=(TIM3_PWM_PSC); //设置预分频值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //设置ARR为TIM3_ARR TIM3->CCR2&=0x00; TIM3->CCR2|=TIM3_CH2_CCR2; //设置翻转周期计时长度 TIM3->CCMR1|=(6<<12)|(1<<11); //使能CH2和设置CH2为模式1 TIM3->CCER|=(1<<4); //CH2使能输出 TIM3->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM3_CH3_EN==1) void PWM3_CH3_Init(void) { RCC->APB1ENR|=(1<<1); //开启TIM3时钟 //下面为映射引脚配置 #if(TIM3_PWM_CH==0||TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0XFFFFFFF0; //清除PB0之前配置位 GPIOB->CRL|=0X0000000B; //配置PB0为复用推挽输出 #endif #if(TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<4)|(1<<0); //使能GPIOC和AFIO时钟 GPIOC->CRH&=0XFFFFFFF0; //清除PC8之前配置位 GPIOC->CRH|=0X0000000B; //配置PC8为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<10); //定义引脚重映射，设置PWM3相应引脚 TIM3->CR1|=(1<<7); //使能自动重装寄存器 TIM3->PSC|=(TIM3_PWM_PSC); //设置预分频值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //设置ARR为TIM3_ARR TIM3->CCR3&=0x00; TIM3->CCR3|=TIM3_CH3_CCR3; //设置翻转周期计时长度 TIM3->CCMR2|=(6<<4)|(1<<3); //使能CH3和设置CH3为模式1 TIM3->CCER|=(1<<8); //CH3使能输出 TIM3->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM3_CH4_EN==1) void PWM3_CH4_Init(void) { RCC->APB1ENR|=(1<<1); //开启TIM3时钟 //下面为映射引脚配置 #if(TIM3_PWM_CH==0||TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0XFFFFFF0F; //清除PB1之前配置位 GPIOB->CRL|=0X000000B0; //配置PB1为复用推挽输出 #endif #if(TIM3_PWM_CH==3) RCC->APB2ENR|=(1<<4)|(1<<0); //使能GPIOC和AFIO时钟 GPIOC->CRH&=0XFFFFFF0F; //清除PC9之前配置位 GPIOC->CRH|=0X000000B0; //配置PC9为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<6); //定义引脚重映射，设置PWM3相应引脚 TIM3->CR1|=(1<<7); //使能自动重装寄存器 TIM3->PSC|=(TIM3_PWM_PSC); //设置预分频值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //设置ARR为TIM3_ARR TIM3->CCR4&=0x00; TIM3->CCR4|=TIM3_CH4_CCR4; //设置翻转周期计时长度 TIM3->CCMR2|=(6<<12)|(1<<11); //使能CH3和设置CH3为模式1 TIM3->CCER|=(1<<12); //CH3使能输出 TIM3->CR1|=(1<<0); //开始计数 } #endif /*###############################下面为TIM4实现PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM4_CH1_EN==1) void PWM4_CH1_Init(void) { RCC->APB1ENR|=(1<<2); //开启TIM4时钟 //下面为映射引脚配置 #if(TIM4_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0XF0FFFFFF; //清除PB6之前配置位 GPIOB->CRL|=0X0B000000; //配置PB6为复用推挽输出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOD和AFIO时钟 GPIOD->CRH&=0XFFF0FFFF; //清除PD12之前配置位 GPIOD->CRH|=0X000B0000; //配置PD12为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定义引脚重映射，设置PWM4相应引脚 TIM4->CR1|=(1<<7); //使能自动重装寄存器 TIM4->PSC|=(TIM4_PWM_PSC); //设置预分频值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //设置ARR为TIM4_ARR TIM4->CCR1&=0x00; TIM4->CCR1|=TIM4_CH1_CCR1; //设置翻转周期计时长度 TIM4->CCMR1|=(6<<4)|(1<<3); //使能CH1和设置CH1为模式1 TIM4->CCER|=(1<<0); //CH1使能输出 TIM4->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM4_CH2_EN==1) void PWM4_CH2_Init(void) { RCC->APB1ENR|=(1<<2); //开启TIM1时钟 //下面为映射引脚配置 #if(TIM4_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRL&=0X0FFFFFFF; //清除PB7之前配置位 GPIOB->CRL|=0XB0000000; //配置PB7为复用推挽输出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOD和AFIO时钟 GPIOD->CRH&=0XFF0FFFFF; //清除PD13之前配置位 GPIOD->CRH|=0X00B00000; //配置PD13为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定义引脚重映射，设置PWM4相应引脚 TIM4->CR1|=(1<<7); //使能自动重装寄存器 TIM4->PSC|=(TIM4_PWM_PSC); //设置预分频值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //设置ARR为TIM4_ARR TIM4->CCR2&=0x00; TIM4->CCR2|=TIM4_CH2_CCR2; //设置翻转周期计时长度 TIM4->CCMR1|=(6<<12)|(1<<11); //使能CH2和设置CH2为模式1 TIM4->CCER|=(1<<4); //CH2使能输出 TIM4->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM4_CH3_EN==1) void PWM4_CH3_Init(void) { RCC->APB1ENR|=(1<<2); //开启TIM4时钟 //下面为映射引脚配置 #if(TIM4_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRH&=0XFFFFFFF0; //清除PB8之前配置位 GPIOB->CRH|=0X0000000B; //配置PB8为复用推挽输出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOC和AFIO时钟 GPIOD->CRH&=0XF0FFFFFF; //清除PD14之前配置位 GPIOD->CRH|=0X0B00000F; //配置PD14为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定义引脚重映射，设置PWM4相应引脚 TIM4->CR1|=(1<<7); //使能自动重装寄存器 TIM4->PSC|=(TIM4_PWM_PSC); //设置预分频值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //设置ARR为TIM4_ARR TIM4->CCR3&=0x00; TIM4->CCR3|=TIM4_CH3_CCR3; //设置翻转周期计时长度 TIM4->CCMR2|=(6<<4)|(1<<3); //使能CH3和设置CH3为模式1 TIM4->CCER|=(1<<8); //CH3使能输出 TIM4->CR1|=(1<<0); //开始计数 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM4_CH4_EN==1) void PWM4_CH4_Init(void) { RCC->APB1ENR|=(1<<2); //开启TIM4时钟 //下面为映射引脚配置 #if(TIM3_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO时钟 GPIOB->CRH&=0XFFFFFF0F; //清除PB9之前配置位 GPIOB->CRH|=0X000000B0; //配置PB9为复用推挽输出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOD和AFIO时钟 GPIOD->CRH&=0X0FFFFFFF; //清除PD15之前配置位 GPIOD->CRH|=0XB0000000; //配置PD15为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定义引脚重映射，设置PWM4相应引脚 TIM4->CR1|=(1<<7); //使能自动重装寄存器 TIM4->PSC|=(TIM4_PWM_PSC); //设置预分频值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //设置ARR为TIM4_ARR TIM4->CCR4&=0x00; TIM4->CCR4|=TIM4_CH4_CCR4; //设置翻转周期计时长度 TIM4->CCMR2|=(6<<12)|(1<<11); //使能CH4和设置CH4为模式1 TIM4->CCER|=(1<<12); //CH4使能输出 TIM4->CR1|=(1<<0); //开始计数 } #endif /*###############################下面为TIM5实现PWM##################################################*/ /*--------------------------------PWM_CH4-----------------------------------------------------------*/ #if(PWM5_CH4_EN==1) void PWM5_CH4_Init(void) { RCC->APB1ENR|=(1<<3); //开启TIM5时钟 //下面为映射引脚配置 #if(TIM5_PWM_CH==0) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO时钟 GPIOA->CRL&=0XFFFF0FFF; //清除PA3之前配置位 GPIOA->CRL|=0X0B00B000; //配置PA3为复用推挽输出 #endif //下面为寄存器配置 AFIO->MAPR|=(TIM5_PWM_CH<<16); //定义引脚重映射，设置PWM5相应引脚 TIM5->CR1|=(1<<7); //使能自动重装寄存器 TIM5->PSC|=(TIM5_PWM_PSC); //设置预分频值 TIM5->ARR&=0X00; //清除ARR之前配置 TIM5->ARR|=TIM5_PWM_ARR; //设置ARR为TIM5_ARR TIM5->CCR1&=0x00; TIM5->CCR1|=TIM5_CH4_CCR1; //设置翻转周期计时长度 TIM5->CCMR2|=(6<<12)|(1<<11); //使能CH4和设置CH4为模式1 TIM5->CCER|=(1<<12); //CH4使能输出 TIM5->CR1|=(1<<0); //开始计数 } #endif //FILE END
