ARM-PWM実験

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main.c

#include "pwm.h"
extern void printf(const char *fmt, ...);
//extern char buffer[50] = {0};
void delay_ms(int ms)
{
	int i,j;
	for(i = 0; i < ms;i++)
		for (j = 0; j < 1800; j++);
}


int main()
{
	hal_pwm_init();  //蜂鸣器
	hal_fan_init();　//风扇
	hal_monitor_init();  //马达
	while(1)
	{
	
	}
	return 0;
}

パスワード.h

#ifndef __PWM_H__
#define __PWM_H__
#include "stm32mp1xx_rcc.h"
#include "stm32mp1xx_gpio.h"
#include "stm32mp1xx_tim.h"


//蜂鸣器 PB6 ---> TIM4_CH1
void hal_pwm_init();

//风扇 PE9 ----> TIM1_CH1
void hal_fan_init();

//马达 PF6 ----> TIM16_CH1
void hal_monitor_init();

#endif

pwm.c

#include "pwm.h"
//蜂鸣器 PB6---->TIM4_CH1
void hal_pwm_init()
{
	//RCC使能********
	RCC->MP_AHB4ENSETR |=0x1<<1;
	//RCC使能TIM4_CH1
	RCC->MP_APB1ENSETR |=(0x1<<2);

	//设置GPIO模式　MODER [13:12]=10
	GPIOB->MODER &=(~(0x3<<12));
	GPIOB->MODER |=(0x1<<13);
	//设置PB6引脚复用 TIM4_CH1 AFRL[27:24]=0010
	GPIOB->AFRL  &=(~(0xf<<24));
	GPIOB->AFRL |=(0x1<<25);
	
	//设置TIM4章节********
	//设置分频器值     
	TIM4->PSC = (209-1);
	//设置自动加载计数器 －PWM
	TIM4->ARR=1000;
	//设置捕获/比较寄存器　占空比
	TIM4->CCR1 =300;
	//配置TIM4为pwm模式  [16][6:4]=0110
	TIM4->CCMR1 &=(~(0x1<<16));
	TIM4->CCMR1 &=(~(0x7<<4));
	TIM4->CCMR1 |=(0x3<<5);
	//设置输出比较预加载使能 [3]=1
	TIM4->CCMR1 &=(~(0x1<<3));
	TIM4->CCMR1 |=(0x1<<3);
	//配置通道1为输出 [1:0]=00
	TIM4->CCMR1 &=(~(0x3<<0));
	//设置通道1为输出 [3]=0
	TIM4->CCER &=(~(0x1<<3));
	//设置捕获比较寄存器起始状态为高电平/低电平 0:高电平 1:低电平
	TIM4->CCER &=(~(0x1<<1));
	TIM4->CCER |=(0x1<<1);
	//设置捕获/比较输出使能　[0]=1
	TIM4->CCER &=(~(0x1<<0));
	TIM4->CCER |=(0x1<<0);
	//设置自动加载使能 [7]=1
	TIM4->CR1 &=(~(0x1<<7));
	TIM4->CR1 |=(0x1<<7);
	//设置边沿对齐方式 [6:5]=00
	TIM4->CR1 &=(~(0x3<<5));
	//设置递减计数方式 [4] =1
	TIM4->CR1 &=(~(0x1<<4));
	TIM4->CR1 |=(0x1<<4);
	//设置计数器使能 [0]=1
	TIM4->CR1 &=(~(0x1<<0));
	TIM4->CR1 |=(0x1<<0);
}

//风扇 PE9----->TIM1_CH1
void hal_fan_init()
{
	//RCC使能********
	RCC->MP_AHB4ENSETR |=0x1<<4;
	//RCC使能TIM4_CH1
	RCC->MP_APB2ENSETR |=(0x1<<0);

	//设置GPIOE模式　MODER [19:18]=10
	GPIOE->MODER &=(~(0x3<<18));
	GPIOE->MODER |=(0x1<<19);
	//设置PE9引脚复用 TIM4_CH1 AFRH[7:4]=0001
	GPIOE->AFRH  &=(~(0xf<<4));
	GPIOE->AFRH |=(0x1<<4);
	
	//设置TIM1章节********
	//设置分频器值     
	TIM1->PSC = (209-1);
	//设置自动加载计数器 －PWM
	TIM1->ARR=1000;
	//设置捕获/比较寄存器　占空比
	TIM1->CCR1 =300;
	//配置TIM4为pwm模式  [16][6:4]=0110
	TIM1->CCMR1 &=(~(0x1<<16));
	TIM1->CCMR1 &=(~(0x7<<4));
	TIM1->CCMR1 |=(0x3<<5);
	//设置输出比较预加载使能 [3]=1
	TIM1->CCMR1 &=(~(0x1<<3));
	TIM1->CCMR1 |=(0x1<<3);
	//配置通道1为输出 [1:0]=00
	TIM1->CCMR1 &=(~(0x3<<0));
	//设置通道1为输出 [3]=0
	TIM1->CCER &=(~(0x1<<3));
	//设置捕获比较寄存器起始状态为高电平/低电平 0:高电平 1:低电平
	TIM1->CCER &=(~(0x1<<1));
	TIM1->CCER |=(0x1<<1);
	//设置捕获/比较输出使能　[0]=1
	TIM1->CCER &=(~(0x1<<0));
	TIM1->CCER |=(0x1<<0);
	//设置自动加载使能 [7]=1
	TIM1->CR1 &=(~(0x1<<7));
	TIM1->CR1 |=(0x1<<7);
	//设置边沿对齐方式 [6:5]=00
	TIM1->CR1 &=(~(0x3<<5));
	//设置递减计数方式 [4] =1
	TIM1->CR1 &=(~(0x1<<4));
	TIM1->CR1 |=(0x1<<4);
	//设置计数器使能 [0]=1
	TIM1->CR1 &=(~(0x1<<0));
	TIM1->CR1 |=(0x1<<0);
	//设置主输出使能
	TIM1->BDTR |=(0x1<<15);
}

//马达　PF6---->TIM16_CH1
void hal_monitor_init()
{
	//RCC使能********
	RCC->MP_AHB4ENSETR |=0x1<<5;
	//RCC使能TIM4_CH1
	RCC->MP_APB2ENSETR |=(0x1<<3);

	//设置GPIOE模式　MODER [13:12]=10
	GPIOF->MODER &=(~(0x3<<12));
	GPIOF->MODER |=(0x1<<13);
	//设置PF6引脚复用 TIM4_CH1 AFRH[27:24]=0001
	GPIOF->AFRL  &=(~(0xf<<24));
	GPIOF->AFRL |=(0x1<<24);
	
	//设置TIM1章节********
	//设置分频器值     
	TIM16->PSC = (209-1);
	//设置自动加载计数器 －PWM
	TIM16->ARR=1000;
	//设置捕获/比较寄存器　占空比
	TIM16->CCR1 =300;
	//配置TIM4为pwm模式  [16][6:4]=0110
	TIM16->CCMR1 &=(~(0x1<<16));
	TIM16->CCMR1 &=(~(0x7<<4));
	TIM16->CCMR1 |=(0x3<<5);
	//设置输出比较预加载使能 [3]=1
	TIM16->CCMR1 &=(~(0x1<<3));
	TIM16->CCMR1 |=(0x1<<3);
	//配置通道1为输出 [1:0]=00
	TIM16->CCMR1 &=(~(0x3<<0));
	//设置通道1为输出 [3]=0
	TIM16->CCER &=(~(0x1<<3));
	//设置捕获比较寄存器起始状态为高电平/低电平 0:高电平 1:低电平
	TIM16->CCER &=(~(0x1<<1));
	TIM16->CCER |=(0x1<<1);
	//设置捕获/比较输出使能　[0]=1
	TIM16->CCER &=(~(0x1<<0));
	TIM16->CCER |=(0x1<<0);
	//设置自动加载使能 [7]=1 
	TIM16->CR1 &=(~(0x1<<7));
	TIM16->CR1 |=(0x1<<7);
	//设置边沿对齐方式 [6:5]=00
	TIM16->CR1 &=(~(0x3<<5));

	//设置递减计数方式 [4] =1
	TIM16->CR1 &=(~(0x1<<4));
	TIM16->CR1 |=(0x1<<4);
	//设置计数器使能 [0]=1
	TIM16->CR1 &=(~(0x1<<0));
	TIM16->CR1 |=(0x1<<0);
	//设置主输出使能
	TIM16->BDTR |=(0x1<<15);
}

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