stm32 马达，风扇，蜂鸣器_stm32风铃-优快云博客

本文链接：https://blog.youkuaiyun.com/ctf1991/article/details/127146992

电路分析

在这里插入图片描述

由图可知
蜂鸣器：TIM4_CH1---->PB6
风扇：TIM1_CH1---->PE9
马达：TIM16_CH1---->PF6
可以用以下代码检查硬件是否正常
gpio toggle gpiob6
gpio toggle gpioe9
gpio toggle gpiof6

程序分析

1.分析RCC章节：相关控制器组使能 TIM4 TIM1 TIM16 gpiob gpioe gpiof
2.分析GPIO章节：MODER复用模式/复用功能(10)
AFRL和AFRH改为TIMx_CH!
4.分析TIM4章节：产生特定的方波
递减计数方式
比较/捕获寄存器

代码

main.c

#include "pwm.h"                          
                                          
extern void printf(const char *fmt, ...); 
void delay_ms(int ms)                     
{                                         
    int i,j;                              
    for(i = 0; i < ms;i++)                
        for (j = 0; j < 1800; j++);       
}                                         
                                          
int main()                                
{                                         
    //PWM_蜂鸣器初始化-->TIM4-CH1  PB6    
    pwm_buzzer_init();                    
                                          
    //PWM_风扇初始化-->TIM1-CH1 PE9       
    pwm_fan_init();                       
                                          
    //PWM_马达初始化-->TIM16-CH1 PF6      
    pwm_motor_init();                     
    while(1)                              
    {                                     
                                          
    }                                     
    return 0;                             
}

pwm.h

#ifndef __PWM_H__                   
#define __PWM_H__                   
#include "stm32mp1xx_gpio.h"        
#include "stm32mp1xx_rcc.h"         
#include "stm32mp1xx_tim.h"         
                                    
//PWM_蜂鸣器初始化-->TIM4-CH1  PB6  
void pwm_buzzer_init();             
                                    
//PWM_风扇初始化-->TIM1-CH1 PE9     
void pwm_fan_init();                
                                    
//PWM_马达初始化-->TIM16-CH1 PF6    
void pwm_motor_init();              
                                    
#endif

pwm.c

PWM_蜂鸣器初始化

#include "pwm.h"

//PWM_蜂鸣器初始化-->TIM4-CH1  PB6
void pwm_buzzer_init()
{
    //RCC初始化
    RCC->MP_AHB4ENSETR |=(0x1<<1); //GPIOB使能
    RCC->MP_APB1ENSETR |=(0x1<<2); //TIME4使能


    //GPIO初始化                                                                     
    GPIOB->MODER &=(~(0x3<<12));//pb6  //设置模式为复用功能
    GPIOB->MODER |=(0x2<<12);

    GPIOB->AFRL &=~(0xf<<24);//pb6     //设置复用功能为TIM4
    GPIOB->AFRL |=(0x2<<24);




    //TIME4初始化
    TIM4->CR1 |=(0x1 <<7);  //TIM4_CR1[7] = 1 ------>自动重载计数器预加载使能

    TIM4->CR1 &=~(0x3<<5); //TIM4_CR1[6：5] = 00 ------>设置边沿对齐模式

    TIM4->CR1 |=(0x1 <<4); //TIM4_CR1[4] = 1 ------>设置递减计数器

    TIM4->CR1 |=(0x1 <<0); //TIM4_CR1[0] = 1 ------>设置计数器使能

    TIM4->CCMR1 &= ~(0x1<<16); //TIM4_CCMR1[16][6:4] = 0110------>设置为PWM1模式
    TIM4->CCMR1 |=(0x3<<5);
    TIM4->CCMR1 &= ~(0x1<<4);

    TIM4->CCMR1 |=(0x1<<3); //TIM4_CCMR1[3] = 1 ------>输出捕获预加载使能


    TIM4->CCMR1 &=( ~(0x3<<0));//TIM4_CCMR1[1：0] =00 ------>设置为输出模式


    TIM4->CCER &=(~(0x1<<3));   //TIM4_CCER1[3] = 1 ------>设置为输出模式
    TIM4->CCER |=(0x1<<1);      //TIM4_CCER1[1] = 0 ------>设置起始状态高电平
    TIM4->CCER |=(0x1<<0);      //TIM4_CCER1[0] = 1 ------>设置为输出使能


    TIM4->PSC &=(~(0xffff));   //写入分频数
    TIM4->PSC |=(0xd1);

    TIM4->ARR &=(~(0xffff<<0)); //写入重载计数
    TIM4->ARR |=(0xEA60);

    TIM4->CCR1 &=(~(0xffffffff));  //写入捕获数
    TIM4->CCR1 |=(0x7530);

}

PWM_风扇初始化

//PWM_风扇初始化-->TIM1-CH1 PE9                                                      
void pwm_fan_init()                                                                  
{                                                                                    
    //RCC初始化                                                                      
    RCC->MP_AHB4ENSETR |=(0x1<<4); //GPIOE使能                                       
    RCC->MP_APB2ENSETR |=(0x1<<0); //TIME1使能                                       
                                                                                     
                                                                                     
    //GPIO初始化                                                                     
    GPIOE->MODER &=(~(0x3<<18));//pe9  //设置模式为复用功能                          
    GPIOE->MODER |=(0x2<<18);                                                        
                                                                                     
    GPIOE->AFRH &=~(0xf<<4);//pe9   //设置复用功能为TIM1                             
    GPIOE->AFRH |=(0x1<<4);                                                          
                                                                                     
    //TIME1初始化                                                                    
    TIM1->CR1 |=(0x1 <<7);  //TIM1_CR1[7] = 1 ------>自动重载计数器预加载使能        
                                                                                     
    TIM1->CR1 &=~(0x3<<5); //TIM1_CR1[6：5] = 00 ------>设置边沿对齐模式             
                                                                                     
    TIM1->CR1 |=(0x1 <<4); //TIM1_CR1[4] = 1 ------>设置递减计数器                   
                                                                                     
    TIM1->CR1 |=(0x1 <<0); //TIM1_CR1[0] = 1 ------>设置计数器使能                   
                                                                                     
    TIM1->CCMR1 &= ~(0x1<<16); //TIM1_CCMR1[16][6:4] = 0110------>设置为PWM1模式     
    TIM1->CCMR1 |=(0x3<<5);                                                          
    TIM1->CCMR1 &= ~(0x1<<4);                                                        
                                                                                     
    TIM1->CCMR1 |=(0x1<<3); //TIM1_CCMR1[3] = 1 ------>输出捕获预加载使能            
                                                                                     
                                                                                     
    TIM1->CCMR1 &=( ~(0x3<<0));//TIM1_CCMR1[1：0] =00 ------>设置为输出模式          
                                                                                     
                                                                                     
    TIM1->CCER &=(~(0x1<<3));   //TIM1_CCER1[3] = 1 ------>设置为输出模式            
    TIM1->CCER |=(0x1<<1);      //TIM1_CCER1[1] = 0 ------>设置起始状态高电平        
    TIM1->CCER |=(0x1<<0);      //TIM1_CCER1[0] = 1 ------>设置为输出使能            
                                                                                     
                                                                                     
    TIM1->PSC &=(~(0xffff));   //写入分频数                                          
    TIM1->PSC |=(0xd1);                                                              
                                                                                     
    TIM1->ARR &=(~(0xffff<<0)); //写入重载计数                                       
    TIM1->ARR |=(0x3eb);                                                             
                                                                                     
    TIM1->CCR1 &=(~(0xffff));  //写入捕获数                                          
    TIM1->CCR1 |=(0x64);                                                             
                                                                                     
                                                                                     
    TIM1->BDTR |=(0x1<<15);                                                          
                                                                                                                                                                                                                                                             
}

PWM_马达初始化

//PWM_马达初始化-->TIM16-CH1 PF6                                                         
void pwm_motor_init()                                                                    
{                                                                                        
    //RCC初始化                                                                          
    RCC->MP_AHB4ENSETR |=(0x1<<5); //GPIOF使能                                           
    RCC->MP_APB2ENSETR |=(0x1<<3); //TIME16使能                                          
                                                                                         
    //GPIO初始化                                                                         
                                                                                         
    GPIOF->MODER &=(~(0x3<<12));//pf6  //设置模式为复用功能                              
    GPIOF->MODER |=(0x2<<12);                                                            
                                                                                         
    GPIOF->AFRL &=~(0xf<<24);//pf6  //设置复用功能为TIM16                                
    GPIOF->AFRL |=(0x1<<24);                                                             
                                                                                         
                                                                                         
    //TIME16初始化                                                                       
    TIM16->CR1 |=(0x1 <<7);  //TIM16_CR1[7] = 1 ------>自动重载计数器预加载使能          
                                                                                         
//  TIM16->CR1 &=~(0x3<<5); //TIM16_CR1[6：5] = 00 ------>设置边沿对齐模式               
                                                                                         
//  TIM16->CR1 |=(0x1 <<4); //TIM16_CR1[4] = 1 ------>设置递减计数器                     
                                                                                         
    TIM16->CR1 |=(0x1 <<0); //TIM16_CR1[0] = 1 ------>设置计数器使能                     
                                                                                         
                                                                                         
    TIM16->CCMR1 &= ~(0x1<<16); //TIM16_CCMR1[16][6:4] = 0110------>设置为PWM1模式       
    TIM16->CCMR1 |=(0x3<<5);                                                             
    TIM16->CCMR1 &= ~(0x1<<4);                                                           
                                                                                         
    TIM16->CCMR1 |=(0x1<<3); //TIM16_CCMR1[3] = 1 ------>输出捕获预加载使能              
                                                                                         
                                                                                         
    TIM16->CCMR1 &=( ~(0x3<<0));//TIM16_CCMR1[1：0] =00 ------>设置为输出模式            
                                                                                         
                                                                                         
    TIM16->CCER &=(~(0x1<<3));   //TIM16_CCER1[3] = 1 ------>设置为输出模式              
    TIM16->CCER |=(0x1<<1);      //TIM16_CCER1[1] = 0 ------>设置起始状态高电平          
    TIM16->CCER |=(0x1<<0);      //TIM16_CCER1[0] = 1 ------>设置为输出使能              
                                                                                         
                                                                                         
    TIM16->PSC &=(~(0xffff));   //写入分频数                                             
    TIM16->PSC |=(0xd1);                                                                 
                                                                                         
    TIM16->ARR &=(~(0xffff<<0)); //写入重载计数                                          
    TIM16->ARR |=(0x3eb);                                                                
                                                                                         
    TIM16->CCR1 &=(~(0xffffffff));  //写入捕获数                                         
    TIM16->CCR1 |=(0x64);                                                                
                                                                                         
                                                                                         
    TIM16->BDTR |=(0x1<<15);                                                             
                                                                                         
}