STM32_3.5Lib_MIDI音乐实现

MIDI.c函数

uc16 music1[78]={ //音乐1的数据表（奇数是音调，偶数是长度）
330,750,440,375,494,375,523,750,587,375,659,375,587,750,494,375,392,375,440,1500,330,750,440,375,494,375,
523,750,587,375,659,375,587,750,494,375,392,375,784,1500,659,750,698,375,784,375,880,750,784,375,698,375,
659,750,587,750,659,750,523,375,494,375,440,750,440,375,494,375,523,750,523,750,494,750,392,750,440,3000
};

void MIDI_PLAY(void)
{ //MIDI音乐
    u16 i,e;
    for(i=0;i<39;i++)
        {
        for(e=0;e<music1[i*2]*music1[i*2+1]/1000;e++)
                {
            GPIO_WriteBit(BUZZERPORT,BUZZER,(BitAction)(0)); //蜂鸣器接口输出0
            delay_us(500000/music1[i*2]); //延时        
            GPIO_WriteBit(BUZZERPORT,BUZZER,(BitAction)(1)); //蜂鸣器接口输出高电平1
            delay_us(500000/music1[i*2]); //延时    
        }    
    }
}

MIDI.h头文件

#ifndef __LED_H
#define __LED_H     
#include "sys.h"

//#define LED1 PBout(0)// PB0
//#define LED2 PBout(1)// PB1    
#define LEDPORT    GPIOB    //定义IO接口
#define LED1    GPIO_Pin_0    //定义IO接口
#define LED2    GPIO_Pin_1    //定义IO接口

void LED_Init(void);//初始化                             
#endif