STM32_驱动蜂鸣器自定义库

功能说明：
1、可以实现设置蜂鸣器的音调
2、可以设置蜂鸣器连续鸣响次数
3、设置连续鸣响时间间隔

main.c

#include "mymain.h"
#include "dev_control.h"int main(void)
{HAL_Init();SystemClock_Config();MX_GPIO_Init();MX_TIM2_Init();devInit();devBuzzerSetNum(3);		//设置鸣响次数3devBuzzerSetLevel(unsigned char level);	//设置音调等级while (1){devTask();HAL_Delay(1);}
}

buzzer.c

#include "dev_control.h"#define DEV_TASK_PERIOD 1 //调用devTask的周期
devBuzzer_t devBuzzer = {0};void devInit(void)
{/*************************蜂鸣器************************/devBuzzer.devBuzzerEnable = STATE_ENABLE;devBuzzer.devBuzzerPeriod = 200;				//周期200msdevBuzzer.devBuzzerDuty = 100;				//鸣响100ms
}void devTask(void)
{if(devBuzzer.devBuzzerEnable == STATE_ENABLE){if(devBuzzer.devBuzzerNumber > 0){devBuzzer.devBuzzerCount += DEV_TASK_PERIOD;if(devBuzzer.devBuzzerCount <= devBuzzer.devBuzzerDuty){HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_3);}else {HAL_TIM_PWM_Stop(&htim2,TIM_CHANNEL_3);}if(devBuzzer.devBuzzerCount == devBuzzer.devBuzzerPeriod){devBuzzer.devBuzzerCount = 0;devBuzzer.devBuzzerNumber--;}}}
}void devBuzzerSetLevel(unsigned char level)
{switch(level){case BUZZER_LEVEL_0:devBuzzer.devBuzzerLevel = level;__HAL_TIM_SET_PRESCALER(&htim2, 144-1);//设置时钟频率0.5Khzbreak;case BUZZER_LEVEL_1:devBuzzer.devBuzzerLevel = level;__HAL_TIM_SET_PRESCALER(&htim2, 72-1);//1Khzbreak;case BUZZER_LEVEL_2:devBuzzer.devBuzzerLevel = level;__HAL_TIM_SET_PRESCALER(&htim2, 36-1);//2Khzbreak;default:break;}
}

buzzer.h

#ifndef __DEV_CONTROL_H
#define __DEV_CONTROL_H
#include "main.h"
#include "gpio.h"enum{STATE_DISABLE,STATE_ENABLE
};enum{BUZZER_LEVEL_0,BUZZER_LEVEL_1,BUZZER_LEVEL_2
};//蜂鸣器控制结构体
typedef struct
{unsigned char devBuzzerEnable;		//使能unsigned char devBuzzerLevel;		//音调水平unsigned char devBuzzerNumber;		//连续鸣响次数unsigned int devBuzzerDuty;			//单次鸣响时长unsigned int devBuzzerPeriod;		//单次鸣响控制周期unsigned int devBuzzerCount;		//计数用于控制
} devBuzzer_t;void devBuzzerSetNum(unsigned char num);		//设置鸣响次数
void devBuzzerSetLevel(unsigned char level);	//设置音调等级#endif