A7核PWM实验-Toy模板网

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头文件

#ifndef __PWM_H__
#define __PWM_H__

#include "stm32mp1xx_gpio.h"
#include "stm32mp1xx_rcc.h"
#include "stm32mp1xx_tim.h"

//蜂鸣器初始化
void hal_pwm_init();
//风扇初始化
void hal_fan_init();
//马达初始化
void hal_monitor_init();

#endif

运行代码

#include "pwm.h"


void hal_pwm_init()
{
	//RCC章节初始化
	//GPIOB使能 RCC_MP_AHB4ENSETR[1] = 1
	RCC->MP_AHB4ENSETR |= (0x1 << 1);
	//TIM4使能 RCC_MP_ARB1ENSETR[2] = 1
	RCC->MP_APB1ENSETR |= (0x1 << 2);

	//GPIO章节初始化
	//设置复用功能 GPIOB_MODER[13:12] = 10
	GPIOB->MODER &= (~(0x3 << 12));
	GPIOB->MODER |= (0x1 << 13);
	//设置引脚对应复用功能为TIM4 GPIOB_AFRL[27:24] = 0010
	GPIOB->AFRL &= (~(0xf << 24));
	GPIOB->AFRL |= (0x1 << 25);

	//TIM4章节初始化 方波频率1000HZ 占空比
	//设置分频 TIM4_PSC = 208
	TIM4->PSC = 208;
	//设置方波周期 TIM4_ARR = 1000
	TIM4->ARR = 1000;
	//设置占空比　TIM4_CCR1 = 300
	TIM4->CCR1 = 700;
	//设置PWM模式 TIM4_CCMR1[16][6:4] = 0110
	TIM4->CCMR1 &= (~(0x1 << 16));
	TIM4->CCMR1 &= (~(0x7 << 4));
	TIM4->CCMR1 |= (0x3 << 5);
	//设置输出比较加载使能 TIM4_CCMR1[3] = 1
	TIM4->CCMR1 |= (0x1 << 3);
	//设置通道1输出 TIM4_CCMR1[1:0] = 00
	TIM4->CCMR1 &= ~(0x3);
	//设置通道1输出 TIM4_CCER[3] = 0
	TIM4->CCER &= (~(0x1 << 3));
	//设置起始状态为高电平 TIM4->CCER[1] = 1
	TIM4->CCER &= (~(0x1 << 1));
	//设置输出使能 TIM4_CCER[0] = 1
	TIM4->CCER |= 0x1;
	//设置自动预加载使能 TIM4_CR1[7] = 1
	TIM4->CR1 |= (0x1 << 7);
	//设置边沿对齐 TIM4_CR1[6:5] = 00
	TIM4->CR1 &= (~(0x3 << 5));
	//设置设置递减计数方式 TIM4_CR1[4] = 1
	TIM4->CR1 |= (0x1 << 4);
	//设置计数器使能 TIM4_CR1[0] = 0
	TIM4->CR1 &= ~(0x1);
}
void hal_fan_init()
{
	//RCC章节初始化
	//GPIOB使能 RCC_MP_AHB4ENSETR[4] = 1
	RCC->MP_AHB4ENSETR |= (0x1 << 4);
	//TIM4使能 RCC_MP_ARB1ENSETR[0] = 1
	RCC->MP_APB2ENSETR |= 0x1;

	//GPIO章节初始化
	//设置复用功能 GPIOB_MODER[19:18] = 10
	GPIOE->MODER &= (~(0x3 << 18));
	GPIOE->MODER |= (0x1 << 19);
	//设置引脚对应复用功能为TIM4 GPIOB_AFRH[7:4] = 0001
	GPIOE->AFRH &= (~(0xf << 4));
	GPIOE->AFRH |= (0x1 << 4);

	TIM1->BDTR |= (0x1 << 15);
	//设置分频 TIM1_PSC = 208
	TIM1->PSC = 208;
	//设置方波周期 TIM1_ARR = 1000
	TIM1->ARR = 1000;
	//设置占空比　TIM1_CCR1 = 300
	TIM1->CCR1 = 600;
	//设置PWM模式 TIM1_CCMR1[16][6:4] = 0110
	TIM1->CCMR1 &= (~(0x1 << 16));
	TIM1->CCMR1 &= (~(0x7 << 4));
	TIM1->CCMR1 |= (0x3 << 5);
	//设置输出比较加载使能 TIM1_CCMR1[3] = 1
	TIM1->CCMR1 |= (0x1 << 3);
	//设置通道1输出 TIM1_CCMR1[1:0] = 00
	TIM1->CCMR1 &= ~(0x3);
	//设置通道1输出 TIM1_CCER[3] = 0
	TIM1->CCER &= (~(0x1 << 3));
	//设置起始状态为高电平 TIM1->CCER[1] = 1
	TIM1->CCER &= (~(0x1 << 1));
	//设置输出使能 TIM1_CCER[0] = 1
	TIM1->CCER |= 0x1;
	//设置自动预加载使能 TIM1_CR1[7] = 1
	TIM1->CR1 |= (0x1 << 7);
	//设置边沿对齐 TIM1_CR1[6:5] = 00
	TIM1->CR1 &= (~(0x3 << 5));
	//设置设置递减计数方式 TIM1_CR1[4] = 1
	TIM1->CR1 |= (0x1 << 4);
	//设置计数器使能 TIM1_CR1[0] = 0
	TIM1->CR1 &= ~(0x1);
}
void hal_monitor_init()
{
	//RCC章节初始化
	//GPIOB使能 RCC_MP_AHB4ENSETR[5] = 1
	RCC->MP_AHB4ENSETR |= (0x1 << 5);
	//TIM4使能 RCC_MP_ARB1ENSETR[3] = 1
	RCC->MP_APB2ENSETR |= (0x1 << 3);

	//GPIO章节初始化
	//设置复用功能 GPIOB_MODER[13:12] = 10
	GPIOF->MODER &= (~(0x3 << 12));
	GPIOF->MODER |= (0x1 << 13);
	//设置引脚对应复用功能为TIM4 GPIOB_AFRL[27:24] = 0001
	GPIOF->AFRL &= (~(0xf << 24));
	GPIOF->AFRL |= (0x1 << 24);

	TIM16->BDTR |= (0x1 << 15);
	//TIM4章节初始化 方波频率1000HZ 占空比
	//设置分频 TIM16_PSC = 208
	TIM16->PSC = 208;
	//设置方波周期 TIM16_ARR = 1000
	TIM16->ARR = 1000;
	//设置占空比　TIM16_CCR1 = 300
	TIM16->CCR1 = 700;
	//设置PWM模式 TIM16_CCMR1[16][6:4] = 0110
	TIM16->CCMR1 &= (~(0x1 << 16));
	TIM16->CCMR1 &= (~(0x7 << 4));
	TIM16->CCMR1 |= (0x3 << 5);
	//设置输出比较加载使能 TIM16_CCMR1[3] = 1
	TIM16->CCMR1 |= (0x1 << 3);
	//设置通道1输出 TIM16_CCMR1[1:0] = 00
	TIM16->CCMR1 &= ~(0x3);
	//设置通道1输出 TIM16_CCER[3] = 0
	TIM16->CCER &= (~(0x1 << 3));
	//设置起始状态为高电平 TIM16->CCER[1] = 1
	TIM16->CCER &= (~(0x1 << 1));
	//设置输出使能 TIM16_CCER[0] = 1
	TIM16->CCER |= 0x1;
	//设置自动预加载使能 TIM16_CR1[7] = 1
	TIM16->CR1 |= (0x1 << 7);
	//设置边沿对齐 TIM16_CR1[6:5] = 00
	TIM16->CR1 &= (~(0x3 << 5));
	//设置设置递减计数方式 TIM16_CR1[4] = 1
	TIM16->CR1 |= (0x1 << 4);
	//设置计数器使能 TIM16_CR1[0] = 0
	TIM16->CR1 &= ~(0x1);
}

主函数文章来源地址https://www.toymoban.com/news/detail-466043.html

#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()
{
	hal_fan_init();
	while(1)		
	{
	}
	return 0;
}

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