PWM 蜂鸣器|风扇|马达

代码

蜂鸣器

//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);

	
}

风扇

//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);



}

马达

//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);
	
}

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;

}