PWM of STM32
阿新 • • 發佈：2018-12-15
下面是STM32用來產生PWM得檔案，分別是PWM.c和PWM.h
/************************************************************************** * 檔名：PWM.h * * 編寫人：離逝的風 * * 更新時間：2018.12.9 * * 說明：此檔案屬於開源，所有權對任何人開放 * * 如有問題請聯絡郵箱：[email protected] * * * * PWM是用定時器產生佔空比可調的波形，基本配置步驟如下： * * 1.開啟通道，即設定PWMx_CHy_EN為1即可 * * 2.設定通道引腳對映，下面表中有詳細說明，TIM1_PWM_CH * * 3.設定PWM分頻係數，TIM1_PWM_PSC * * 4.設定重灌值 TIM1_PWM_ARR * * 5.設定比較值 TIM1_CH1_CCR1 * * 6.在主函式中呼叫PWMx_CHy_Init來初始化通道 * * 說明：佔空比R=(ARR-CCRx)/ARR * ***************************************************************************/ #ifndef __PWM_H #define __PWM_H #include "stm32f10x.h" /*#############################下面為PWM通道引腳定義############################################################### 說明：通道選擇 ------------------------------------------------------------------------------------------------------------------- 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] 未分組 [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] 未分組 [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為內部時鐘震盪器 -------------------------------------------------------------------------------------------------------------------*/ /**############################下面為檔案配置，根據用更改##########################################################**/ //開啟功能設定1，否則設定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 /*############################下面是引腳修改部分，預設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 /***************************下面為預分頻器值，PSC********************************************************************/ //注：PSC的值決定PWM的時鐘頻率 #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 /***************************下面為自動重灌值，ARR***************************************************************/ //注：ARR的值和CCRx值共同決定PWM的佔空比，佔空比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 /**************************下面為捕獲比較暫存器值，CCRx*********************************************************/ //注：ARR的值和CCRx值共同決定PWM的佔空比，佔空比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 /*#############################下面為函式接，供使用者使用#########################################################*/ //備註：使用者可以直接PSC暫存器值來改變頻率 /*----------------------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
/************************************************************************** * 檔名：PWM.c * * 編寫人：離逝的風 * * 更新時間：2018.12.9 * * 說明：此檔案屬於開源，所有權對任何人開放 * * 如有問題請聯絡郵箱：[email protected] * * * * PWM是用定時器產生佔空比可調的波形，基本配置步驟如下： * * 1.開啟通道，即設定PWMx_CHy_EN為1即可 * * 2.設定通道引腳對映，下面表中有詳細說明，TIM1_PWM_CH * * 3.設定PWM分頻係數，TIM1_PWM_PSC * * 4.設定重灌值 TIM1_PWM_ARR * * 5.設定比較值 TIM1_CH1_CCR1 * * 6.在主函式中呼叫PWMx_CHy_Init來初始化通道 * * 說明：佔空比R=(ARR-CCRx)/ARR * ***************************************************************************/ #include "PWM.h" /*###############################下面為TIM1實現PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM1_CH1_EN==1) void PWM1_CH1_Init(void) { RCC->APB2ENR|=(1<<11); //開啟TIM1時鐘 //下面為對映引腳配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRH&=0XFFFFFFF0; //清除PA8之前配置位 GPIOA->CRH|=0X0000000B; //配置PA8為複用推輓輸出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO時鐘 GPIOE->CRH&=0XFFFFFF0F; //清除PE9之前配置位 GPIOE->CRH|=0X000000B0; //配置PE9為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定義引腳重對映，設定PWM1相應引腳 TIM1->CR1|=(1<<7); //使能自動重灌暫存器 TIM1->PSC|=(TIM1_PWM_PSC); //設定預分頻值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //設定ARR為TIM1_ARR TIM1->CCR1&=0x00; TIM1->CCR1|=TIM1_CH1_CCR1; //設定翻轉週期計時長度 TIM1->CCMR1|=(6<<4)|(1<<3); //使能CH1和設定CH1為模式1 TIM1->CCER|=(1<<0); //CH1使能輸出 TIM1->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM1_CH2_EN==1) void PWM1_CH2_Init(void) { RCC->APB1ENR|=(1<<0); //開啟TIM1時鐘 //下面為對映引腳配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRH&=0XFFFFFF0F; //清除PA9之前配置位 GPIOA->CRH|=0X000000B0; //配置PA9為複用推輓輸出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO時鐘 GPIOE->CRH&=0XFFFF0FFF; //清除PE11之前配置位 GPIOE->CRH|=0X0000B000; //配置PE11為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定義引腳重對映，設定PWM1相應引腳 TIM1->CR1|=(1<<7); //使能自動重灌暫存器 TIM1->PSC|=(TIM1_PWM_PSC); //設定預分頻值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //設定ARR為TIM1_ARR TIM1->CCR2&=0x00; TIM1->CCR2|=TIM1_CH2_CCR2; //設定翻轉週期計時長度 TIM1->CCMR1|=(6<<12)|(1<<11); //使能CH2和設定CH2為模式1 TIM1->CCER|=(1<<4); //CH2使能輸出 TIM1->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM1_CH3_EN==1) void PWM1_CH3_Init(void) { RCC->APB2ENR|=(1<<11); //開啟TIM1時鐘 //下面為對映引腳配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRH&=0XFFFFF0FF; //清除PA10之前配置位 GPIOA->CRH|=0X00000B00; //配置PA10為複用推輓輸出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO時鐘 GPIOE->CRH&=0XFF0FFFFF; //清除PE13之前配置位 GPIOE->CRH|=0X00B00000; //配置PE13為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定義引腳重對映，設定PWM1相應引腳 TIM1->CR1|=(1<<7); //使能自動重灌暫存器 TIM1->PSC|=(TIM1_PWM_PSC); //設定預分頻值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //設定ARR為TIM1_ARR TIM1->CCR3&=0x00; TIM1->CCR3|=TIM1_CH3_CCR3; //設定翻轉週期計時長度 TIM1->CCMR2|=(6<<4)|(1<<3); //使能CH3和設定CH3為模式1 TIM1->CCER|=(1<<8); //CH3使能輸出 TIM1->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM1_CH4_EN==1) void PWM1_CH4_Init(void) { RCC->APB2ENR|=(1<<11); //開啟TIM1時鐘 //下面為對映引腳配置 #if(TIM1_PWM_CH==0||TIM1_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRH&=0XFFFF0FFF; //清除PA11之前配置位 GPIOA->CRH|=0X0000B000; //配置PA11為複用推輓輸出 #endif #if(TIM1_PWM_CH==3) RCC->APB2ENR|=(1<<6)|(1<<0); //使能GPIOE和AFIO時鐘 GPIOE->CRH&=0XF0FFFFFF; //清除PE14之前配置位 GPIOE->CRH|=0X0B000000; //配置PE14為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM1_PWM_CH<<6); //定義引腳重對映，設定PWM1相應引腳 TIM1->CR1|=(1<<7); //使能自動重灌暫存器 TIM1->PSC|=(TIM1_PWM_PSC); //設定預分頻值 TIM1->ARR&=0X00; //清除ARR之前配置 TIM1->ARR|=TIM1_PWM_ARR; //設定ARR為TIM1_ARR TIM1->CCR4&=0x00; TIM1->CCR4|=TIM1_CH4_CCR4; //設定翻轉週期計時長度 TIM1->CCMR2|=(6<<12)|(1<<11); //使能CH3和設定CH3為模式1 TIM1->CCER|=(1<<12); //CH3使能輸出 TIM1->CR1|=(1<<0); //開始計數 } #endif /*###############################下面為TIM2實現PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM2_CH1_EN==1) void PWM2_CH1_Init(void) { RCC->APB1ENR|=(1<<0); //開啟TIM2時鐘 //下面為對映引腳配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==2) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRL&=0XFFFFFFF0; //清除PA0之前配置位 GPIOA->CRL|=0X0000000B; //配置PA0為複用推輓輸出 #endif #if(TIM2_PWM_CH==1||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRH&=0X0FFFFFFF; //清除PA15之前配置位 GPIOA->CRH|=0XB0000000; //配置P15為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<8); //定義引腳重對映，設定PWM2相應引腳 TIM2->CR1|=(1<<7); //使能自動重灌暫存器 TIM2->PSC|=(TIM2_PWM_PSC); //設定預分頻值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //設定ARR為TIM1_ARR TIM2->CCR1&=0x00; TIM2->CCR1|=TIM2_CH1_CCR1; //設定翻轉週期計時長度 TIM2->CCMR1|=(6<<4)|(1<<3); //使能CH1和設定CH1為模式1 TIM2->CCER|=(1<<0); //CH1使能輸出 TIM2->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM2_CH2_EN==1) void PWM2_CH2_Init(void) { RCC->APB1ENR|=(1<<0); //開啟TIM2時鐘 //下面為對映引腳配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==2) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRL&=0XFFFFFF0F; //清除PA1之前配置位 GPIOA->CRL|=0X000000B0; //配置PA1為複用推輓輸出 #endif #if(TIM2_PWM_CH==1||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0XFFFF0FFF; //清除PB3之前配置位 GPIOB->CRL|=0X0000B000; //配置PB3為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<8); //定義引腳重對映，設定PWM2相應引腳 TIM2->CR1|=(1<<7); //使能自動重灌暫存器 TIM2->PSC|=(TIM2_PWM_PSC); //設定預分頻值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //設定ARR為TIM1_ARR TIM2->CCR2&=0x00; TIM2->CCR2|=TIM2_CH2_CCR2; //設定翻轉週期計時長度 TIM2->CCMR1|=(6<<12)|(1<<11); //使能CH2和設定CH2為模式1 TIM2->CCER|=(1<<4); //CH2使能輸出 TIM2->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM2_CH3_EN==1) void PWM2_CH3_Init(void) { RCC->APB1ENR|=(1<<0); //開啟TIM2時鐘 //下面為對映引腳配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRH&=0XFFFFF0FF; //清除PA2之前配置位 GPIOA->CRH|=0X00000B00; //配置PA2為複用推輓輸出 #endif #if(TIM2_PWM_CH==2||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRH&=0XFFFFF0FF; //清除PB10之前配置位 GPIOB->CRH|=0X00000B00; //配置PB10為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<8); //定義引腳重對映，設定PWM2相應引腳 TIM2->CR1|=(1<<7); //使能自動重灌暫存器 TIM2->PSC|=(TIM2_PWM_PSC); //設定預分頻值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //設定ARR為TIM1_ARR TIM2->CCR3&=0x00; TIM2->CCR3|=TIM2_CH3_CCR3; //設定翻轉週期計時長度 TIM2->CCMR2|=(6<<4)|(1<<3); //使能CH3和設定CH3為模式1 TIM2->CCER|=(1<<8); //CH3使能輸出 TIM2->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM2_CH4_EN==1) void PWM2_CH4_Init(void) { RCC->APB1ENR|=(1<<0); //開啟TIM2時鐘 //下面為對映引腳配置 #if(TIM2_PWM_CH==0||TIM2_PWM_CH==1) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRL&=0XFFFF0FFF; //清除PA3之前配置位 GPIOA->CRL|=0X0000B000; //配置PA3為複用推輓輸出 #endif #if(TIM2_PWM_CH==2||TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRH&=0XFFFF0FFF; //清除PB11之前配置位 GPIOB->CRH|=0X0000B000; //配置PB11為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM2_PWM_CH<<6); //定義引腳重對映，設定PWM2相應引腳 TIM2->CR1|=(1<<7); //使能自動重灌暫存器 TIM2->PSC|=(TIM2_PWM_PSC); //設定預分頻值 TIM2->ARR&=0X00; //清除ARR之前配置 TIM2->ARR|=TIM2_PWM_ARR; //設定ARR為TIM1_ARR TIM2->CCR4&=0x00; TIM2->CCR4|=TIM2_CH4_CCR4; //設定翻轉週期計時長度 TIM2->CCMR2|=(6<<12)|(1<<11); //使能CH3和設定CH3為模式1 TIM2->CCER|=(1<<12); //CH3使能輸出 TIM2->CR1|=(1<<0); //開始計數 } #endif /*###############################下面為TIM3實現PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM3_CH1_EN==1) void PWM3_CH1_Init(void) { RCC->APB1ENR|=(1<<1); //開啟TIM3時鐘 //下面為對映引腳配置 #if(TIM3_PWM_CH==0) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRL&=0XF0FFFFFF; //清除PA6之前配置位 GPIOA->CRL|=0X0B000000; //配置PA6為複用推輓輸出 #endif #if(TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0XFFF0FFFF; //清除PB4之前配置位 GPIOB->CRL|=0X000B0000; //配置PB4為複用推輓輸出 #endif #if(TIM3_PWM_CH==3) RCC->APB2ENR|=(1<<4)|(1<<0); //使能GPIOC和AFIO時鐘 GPIOC->CRL&=0XF0FFFFFF; //清除PC6之前配置位 GPIOC->CRL|=0X0B000000; //配置PC6為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<10); //定義引腳重對映，設定PWM3相應引腳 TIM3->CR1|=(1<<7); //使能自動重灌暫存器 TIM3->PSC|=(TIM3_PWM_PSC); //設定預分頻值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //設定ARR為TIM1_ARR TIM3->CCR1&=0x00; TIM3->CCR1|=TIM3_CH1_CCR1; //設定翻轉週期計時長度 TIM3->CCMR1|=(6<<4)|(1<<3); //使能CH1和設定CH1為模式1 TIM3->CCER|=(1<<0); //CH1使能輸出 TIM3->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM3_CH2_EN==1) void PWM3_CH2_Init(void) { RCC->APB1ENR|=(1<<1); //開啟TIM3時鐘 //下面為對映引腳配置 #if(TIM3_PWM_CH==0) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRL&=0X0FFFFFFF; //清除PA7之前配置位 GPIOA->CRL|=0XB0000000; //配置PA7為複用推輓輸出 #endif #if(TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0XFF0FFFFF; //清除PB5之前配置位 GPIOB->CRL|=0X00B00000; //配置PB5為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<10); //定義引腳重對映，設定PWM3相應引腳 TIM3->CR1|=(1<<7); //使能自動重灌暫存器 TIM3->PSC|=(TIM3_PWM_PSC); //設定預分頻值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //設定ARR為TIM3_ARR TIM3->CCR2&=0x00; TIM3->CCR2|=TIM3_CH2_CCR2; //設定翻轉週期計時長度 TIM3->CCMR1|=(6<<12)|(1<<11); //使能CH2和設定CH2為模式1 TIM3->CCER|=(1<<4); //CH2使能輸出 TIM3->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM3_CH3_EN==1) void PWM3_CH3_Init(void) { RCC->APB1ENR|=(1<<1); //開啟TIM3時鐘 //下面為對映引腳配置 #if(TIM3_PWM_CH==0||TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0XFFFFFFF0; //清除PB0之前配置位 GPIOB->CRL|=0X0000000B; //配置PB0為複用推輓輸出 #endif #if(TIM2_PWM_CH==3) RCC->APB2ENR|=(1<<4)|(1<<0); //使能GPIOC和AFIO時鐘 GPIOC->CRH&=0XFFFFFFF0; //清除PC8之前配置位 GPIOC->CRH|=0X0000000B; //配置PC8為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<10); //定義引腳重對映，設定PWM3相應引腳 TIM3->CR1|=(1<<7); //使能自動重灌暫存器 TIM3->PSC|=(TIM3_PWM_PSC); //設定預分頻值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //設定ARR為TIM3_ARR TIM3->CCR3&=0x00; TIM3->CCR3|=TIM3_CH3_CCR3; //設定翻轉週期計時長度 TIM3->CCMR2|=(6<<4)|(1<<3); //使能CH3和設定CH3為模式1 TIM3->CCER|=(1<<8); //CH3使能輸出 TIM3->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM3_CH4_EN==1) void PWM3_CH4_Init(void) { RCC->APB1ENR|=(1<<1); //開啟TIM3時鐘 //下面為對映引腳配置 #if(TIM3_PWM_CH==0||TIM3_PWM_CH==2) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0XFFFFFF0F; //清除PB1之前配置位 GPIOB->CRL|=0X000000B0; //配置PB1為複用推輓輸出 #endif #if(TIM3_PWM_CH==3) RCC->APB2ENR|=(1<<4)|(1<<0); //使能GPIOC和AFIO時鐘 GPIOC->CRH&=0XFFFFFF0F; //清除PC9之前配置位 GPIOC->CRH|=0X000000B0; //配置PC9為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM3_PWM_CH<<6); //定義引腳重對映，設定PWM3相應引腳 TIM3->CR1|=(1<<7); //使能自動重灌暫存器 TIM3->PSC|=(TIM3_PWM_PSC); //設定預分頻值 TIM3->ARR&=0X00; //清除ARR之前配置 TIM3->ARR|=TIM3_PWM_ARR; //設定ARR為TIM3_ARR TIM3->CCR4&=0x00; TIM3->CCR4|=TIM3_CH4_CCR4; //設定翻轉週期計時長度 TIM3->CCMR2|=(6<<12)|(1<<11); //使能CH3和設定CH3為模式1 TIM3->CCER|=(1<<12); //CH3使能輸出 TIM3->CR1|=(1<<0); //開始計數 } #endif /*###############################下面為TIM4實現PWM##################################################*/ /*--------------------------------PWM_CH1-----------------------------------------------------------*/ #if(PWM4_CH1_EN==1) void PWM4_CH1_Init(void) { RCC->APB1ENR|=(1<<2); //開啟TIM4時鐘 //下面為對映引腳配置 #if(TIM4_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0XF0FFFFFF; //清除PB6之前配置位 GPIOB->CRL|=0X0B000000; //配置PB6為複用推輓輸出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOD和AFIO時鐘 GPIOD->CRH&=0XFFF0FFFF; //清除PD12之前配置位 GPIOD->CRH|=0X000B0000; //配置PD12為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定義引腳重對映，設定PWM4相應引腳 TIM4->CR1|=(1<<7); //使能自動重灌暫存器 TIM4->PSC|=(TIM4_PWM_PSC); //設定預分頻值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //設定ARR為TIM4_ARR TIM4->CCR1&=0x00; TIM4->CCR1|=TIM4_CH1_CCR1; //設定翻轉週期計時長度 TIM4->CCMR1|=(6<<4)|(1<<3); //使能CH1和設定CH1為模式1 TIM4->CCER|=(1<<0); //CH1使能輸出 TIM4->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH2-------------------------------------------------------------------*/ #if(PWM4_CH2_EN==1) void PWM4_CH2_Init(void) { RCC->APB1ENR|=(1<<2); //開啟TIM1時鐘 //下面為對映引腳配置 #if(TIM4_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRL&=0X0FFFFFFF; //清除PB7之前配置位 GPIOB->CRL|=0XB0000000; //配置PB7為複用推輓輸出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOD和AFIO時鐘 GPIOD->CRH&=0XFF0FFFFF; //清除PD13之前配置位 GPIOD->CRH|=0X00B00000; //配置PD13為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定義引腳重對映，設定PWM4相應引腳 TIM4->CR1|=(1<<7); //使能自動重灌暫存器 TIM4->PSC|=(TIM4_PWM_PSC); //設定預分頻值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //設定ARR為TIM4_ARR TIM4->CCR2&=0x00; TIM4->CCR2|=TIM4_CH2_CCR2; //設定翻轉週期計時長度 TIM4->CCMR1|=(6<<12)|(1<<11); //使能CH2和設定CH2為模式1 TIM4->CCER|=(1<<4); //CH2使能輸出 TIM4->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH3-------------------------------------------------------------------*/ #if(PWM4_CH3_EN==1) void PWM4_CH3_Init(void) { RCC->APB1ENR|=(1<<2); //開啟TIM4時鐘 //下面為對映引腳配置 #if(TIM4_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRH&=0XFFFFFFF0; //清除PB8之前配置位 GPIOB->CRH|=0X0000000B; //配置PB8為複用推輓輸出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOC和AFIO時鐘 GPIOD->CRH&=0XF0FFFFFF; //清除PD14之前配置位 GPIOD->CRH|=0X0B00000F; //配置PD14為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定義引腳重對映，設定PWM4相應引腳 TIM4->CR1|=(1<<7); //使能自動重灌暫存器 TIM4->PSC|=(TIM4_PWM_PSC); //設定預分頻值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //設定ARR為TIM4_ARR TIM4->CCR3&=0x00; TIM4->CCR3|=TIM4_CH3_CCR3; //設定翻轉週期計時長度 TIM4->CCMR2|=(6<<4)|(1<<3); //使能CH3和設定CH3為模式1 TIM4->CCER|=(1<<8); //CH3使能輸出 TIM4->CR1|=(1<<0); //開始計數 } #endif /*-----------------------------PWM_CH4-------------------------------------------------------------------*/ #if(PWM4_CH4_EN==1) void PWM4_CH4_Init(void) { RCC->APB1ENR|=(1<<2); //開啟TIM4時鐘 //下面為對映引腳配置 #if(TIM3_PWM_CH==0) RCC->APB2ENR|=(1<<3)|(1<<0); //使能GPIOB和AFIO時鐘 GPIOB->CRH&=0XFFFFFF0F; //清除PB9之前配置位 GPIOB->CRH|=0X000000B0; //配置PB9為複用推輓輸出 #endif #if(TIM4_PWM_CH==1) RCC->APB2ENR|=(1<<5)|(1<<0); //使能GPIOD和AFIO時鐘 GPIOD->CRH&=0X0FFFFFFF; //清除PD15之前配置位 GPIOD->CRH|=0XB0000000; //配置PD15為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM4_PWM_CH<<12); //定義引腳重對映，設定PWM4相應引腳 TIM4->CR1|=(1<<7); //使能自動重灌暫存器 TIM4->PSC|=(TIM4_PWM_PSC); //設定預分頻值 TIM4->ARR&=0X00; //清除ARR之前配置 TIM4->ARR|=TIM4_PWM_ARR; //設定ARR為TIM4_ARR TIM4->CCR4&=0x00; TIM4->CCR4|=TIM4_CH4_CCR4; //設定翻轉週期計時長度 TIM4->CCMR2|=(6<<12)|(1<<11); //使能CH4和設定CH4為模式1 TIM4->CCER|=(1<<12); //CH4使能輸出 TIM4->CR1|=(1<<0); //開始計數 } #endif /*###############################下面為TIM5實現PWM##################################################*/ /*--------------------------------PWM_CH4-----------------------------------------------------------*/ #if(PWM5_CH4_EN==1) void PWM5_CH4_Init(void) { RCC->APB1ENR|=(1<<3); //開啟TIM5時鐘 //下面為對映引腳配置 #if(TIM5_PWM_CH==0) RCC->APB2ENR|=(1<<2)|(1<<0); //使能GPIOA和AFIO時鐘 GPIOA->CRL&=0XFFFF0FFF; //清除PA3之前配置位 GPIOA->CRL|=0X0B00B000; //配置PA3為複用推輓輸出 #endif //下面為暫存器配置 AFIO->MAPR|=(TIM5_PWM_CH<<16); //定義引腳重對映，設定PWM5相應引腳 TIM5->CR1|=(1<<7); //使能自動重灌暫存器 TIM5->PSC|=(TIM5_PWM_PSC); //設定預分頻值 TIM5->ARR&=0X00; //清除ARR之前配置 TIM5->ARR|=TIM5_PWM_ARR; //設定ARR為TIM5_ARR TIM5->CCR1&=0x00; TIM5->CCR1|=TIM5_CH4_CCR1; //設定翻轉週期計時長度 TIM5->CCMR2|=(6<<12)|(1<<11); //使能CH4和設定CH4為模式1 TIM5->CCER|=(1<<12); //CH4使能輸出 TIM5->CR1|=(1<<0); //開始計數 } #endif //FILE END