music.c

通过通用定时器的中断来演奏音乐

#include  "music.h"
#include  "buzzer.h"
#include  "systemInit.h"


//  定义乐曲：《化蝶》（梁祝）
const tNote MyScore[] =
{
    {L3, T/4},
    {L5, T/8+T/16},
    {L6, T/16},
    {M1, T/8+T/16},
    {M2, T/16},
    {L6, T/16},
    {M1, T/16},
    {L5, T/8},

    {M5, T/8+T/16},
    {H1, T/16},
    {M6, T/16},
    {M5, T/16},
    {M3, T/16},
    {M5, T/16},
    {M2, T/2},

    {M2, T/8},
    {M2, T/16},
    {M3, T/16},
    {L7, T/8},
    {L6, T/8},
    {L5, T/8+T/16},
    {L6, T/16},
    {M1, T/8},
    {M2, T/8},

    {L3, T/8},
    {M1, T/8},
    {L6, T/16},
    {L5, T/16},
    {L6, T/16},
    {M1, T/16},
    {L5, T/2},

    {M3, T/8+T/16},
    {M5, T/16},
    {L7, T/8},
    {M2, T/8},
    {L6, T/16},
    {M1, T/16},
    {L5, T/8},
    {L5, T/4},

    {L3, T/16},
    {L5, T/16},
    {L3, T/8},
    {L5, T/16},
    {L6, T/16},
    {L7, T/16},
    {M2, T/16},
    {L6, T/4+T/8},
    {L5, T/16},
    {L6, T/16},

    {M1, T/8+T/16},
    {M2, T/16},
    {M5, T/8},
    {M3, T/8},
    {M2, T/8},
    {M3, T/16},
    {M2, T/16},
    {M1, T/8},
    {L6, T/16},
    {L5, T/16},

    {L3, T/4},
    {M1, T/4},
    {L6, T/16},
    {M1, T/16},
    {L6, T/16},
    {L5, T/16},
    {L3, T/16},
    {L5, T/16},
    {L6, T/16},
    {M1, T/16},

    {L5, T/2},
    { 0, T/4},
    { 0, T/4},

    { 0, 0}      //  结束
};


//  演奏乐曲
void musicPlay(void)
{
    short i = 0;

    for (;;)
    {
        if (MyScore[i].mTime == 0) break;

        buzzerSound(MyScore[i].mName);
        SysCtlDelay(MyScore[i].mTime * (TheSysClock / 3000));
        i++;

        buzzerQuiet();
        SysCtlDelay(10 * (TheSysClock / 3000));
    }
}