ARM PWM 4月4日

#ifndef __UART4_H__

#define __UART4_H__

#include "stm32mp1xx_tim.h"

#include "stm32mp1xx_gpio.h"

#include "stm32mp1xx_rcc.h"

//蜂鸣器初始化

void hal_beep_init();

//风扇初始化

void hal_fan_init();

//马达初始化

void hal_monitor_init();

#endif

#include "uart4.h"

extern void delay_ms(int ms);

//初始化串口函数

void hal_beep_init()

{

       /******rcc章节初始化*********/

       RCC->MP_AHB4ENSETR|=(0x1<<1);

       RCC->MP_APB1ENSETR|=(0x1<<2);

      

       /******GPIO章节初始化********/

       GPIOB->MODER&=(~(0x3<<12));

       GPIOB->MODER|=(0x1<<13);

       GPIOB->AFRL&=(~(0xf<<24));

       GPIOB->AFRL|=(0X1<<25);

       /******TIM章节初始化********/

       //设置预分频器值

       TIM4->PSC=208; 

       TIM4->CR1|=(0X1<<7);

       TIM4->CR1&=(~(0X3<<5));

       TIM4->CR1|=(0X1<<4);

       TIM4->CR1|=(0X1<<0);

       //设置自动重载计数器的值

       TIM4->ARR=1000;

       //设置捕获比较寄存器使能

       TIM4->CCER|=(0x1<<3);

       TIM4->CCER&=(~(0x3<<0));

       TIM4->CCER|=(0X1<<0);

 

      

       //对捕获比较寄存器进行初始化

       TIM4->CCMR1&=(~(0x1<<16));

       TIM4->CCMR1&=(~(0x7<<4));

       TIM4->CCMR1|=(0x3<<5);

       TIM4->CCMR1&=(~(0x3<<0));

                         

       //设置捕获比较寄存器的值

       TIM4->CCR1=300;

      

}

void hal_fan_init()

{

//tim1,pe9                   

RCC->MP_AHB4ENSETR|=(0x1<<4);

RCC->MP_APB2ENSETR|=(0X1<<0);

//tim1,pe9                    

                              

    GPIOE->MODER&=(~(0x3<<18));

    GPIOE->MODER|=(0x1<<19);  

    GPIOE->AFRH&=(~(0xf<<4)); 

    GPIOE->AFRH|=(0x1<<4);

       //tim1,pe9

    TIM1->PSC=208;

    TIM1->CR1|=(0X1<<7);

    TIM1->CR1&=(~(0X3<<5));

    TIM1->CR1|=(0X1<<4);

    TIM1->CR1|=(0X1<<0);

  TIM1->ARR=1000;

//使能output compare    

                        

   TIM1->BDTR|=(0x1<<15);

   //TIM1,PE9             

 TIM1->CCER|=(0x1<<3);  

 TIM1->CCER&=(~(0x3<<0));

 TIM1->CCER|=(0X1<<0);  

TIM1->CCMR1&=(~(0x1<<16));

TIM1->CCMR1&=(~(0x7<<4));

TIM1->CCMR1|=(0x3<<5);   

TIM1->CCMR1&=(~(0x3<<0));

                         

TIM1->CCR1=800; 

}

#include "uart4.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()

{

       hal_beep_init();

       hal_fan_init();

       while(1)

       {

      

       }

   

       }