【代码】蜂鸣器FlowerDance

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前言

蜂鸣器FlowerDance
接线方式：蜂鸣器一端接P1.0，另一端接电源正极

源代码

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#include<8052.h>

// 存放寄存器高位
unsigned int h;
// 存放寄存器低位
unsigned int l;

void init()
{
    // 指定开启定时计数器0中断
    IE = 0x82;
    // 为定时/计数器0指定模式
    // 指定门控信号为软件开启
    // 指定工作在定时模式
    // 指定工作方式3
    TMOD = 0x01;
}

void delay(unsigned int ms)
{
    unsigned int j;
    while (ms--)
        for (j = 600; j > 0; j--);
}

void main(void)
{
    init();
    // 初始蜂鸣器
    P1_0 = 1;

    // C大调中音7音阶数组
    __code unsigned int pitch[] = {
        262, 294, 330, 349, 392, 440, 494,
        523, 587, 659, 698, 784, 880, 988,
        1046, 1175, 1318, 1397, 1568, 1760, 1976,
        2092, 2350, 2636, 2794, 3136, 3520, 3952,
        0};
    // 每次蜂鸣器发声的音调
    __code unsigned int tone[] = {
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 20, 16,
        17,
        17, 29, 13, 15, 16, 16, 19,
        16, 21, 20, 19, 20, 24,
        20, 24, 23, 24, 21, 19,
        20, 29, 24,
        17, 29, 13, 15, 17, 16, 19,
        16, 19, 20, 21, 22, 21, 20, 19,
        20, 24, 23, 24, 20, 24, 23, 24, 20, 24, 23, 24, 20, 24, 23, 24,
        20, 24, 22, 24, 20, 24, 22, 24, 20, 24, 22, 24, 20, 17,
        22, 21, 22, 23, 21, 20, 19, 17, 19,
        20, 19, 20, 22, 19, 18, 17, 17, 19,
        18, 17, 16, 18, 17, 16, 15, 17,
        16, 15, 14, 13, 12, 13, 14, 10,
        15, 14, 15, 16, 14, 13, 12, 10, 12,
        13, 12, 13, 15, 12, 11, 10, 10, 12,
        11, 18, 17, 16, 15, 14, 17, 16, 15, 14,
        13, 17, 12, 17, 13,
        17, 29, 13, 15, 17, 16, 19,
        16, 21, 20, 19, 20, 24,
        20, 24, 23, 24, 21, 19,
        20, 29, 17,
        17, 29, 13, 15, 17, 16, 19,
        16, 19, 20, 21, 22, 21, 20, 19,
        20, 24, 23, 24, 20, 24, 23, 24, 20, 24, 23, 24, 20, 24, 23, 24,
        20, 24, 22, 24, 20, 24, 22, 24, 20, 24, 22, 24, 20, 17,
        17, 29, 13, 15, 17, 16, 19,
        16, 21, 20, 19, 20, 24,
        20, 24, 23, 24, 21, 19,
        20, 29, 17,
        17, 29, 13, 15, 17, 16, 19,
        16, 15, 20, 21, 17, 22, 16, 21, 16, 20, 14, 19,
        20, 24, 23, 24, 20, 24, 23, 24, 20, 24, 23, 24, 20, 24, 23, 24,
        20, 24, 22, 24, 20, 24, 22, 24, 20, 24, 22, 24, 20, 17,
        22, 21, 22, 23, 21, 20, 19, 17, 19,
        20, 19, 20, 22, 19, 18, 17, 17, 19,
        18, 17, 16, 18, 17, 16, 15, 17,
        16, 15, 14, 13, 12, 13, 14, 10,
        15, 14, 15, 16, 14, 13, 12, 10, 12,
        13, 12, 13, 15, 12, 11, 10, 10, 12,
        11, 18, 17, 16, 15, 14, 17, 16, 15, 14,
        13, 17, 12, 17, 13,
        20, 13, 15, 17, 20, 13, 15, 17, 21, 16, 17, 20, 21, 16, 22, 21,
        20, 17, 22, 17, 21, 17, 19, 17, 20, 13, 19, 13, 17, 13, 19, 13,
        20, 13, 15, 17, 20, 13, 15, 17, 21, 16, 17, 20, 21, 16, 22, 21,
        20, 15, 22, 15, 23, 16, 24, 17, 23, 16, 22, 20,
        20, 13, 15, 17, 20, 13, 15, 17, 21, 16, 17, 20, 21, 16, 22, 21,
        20, 17, 22, 17, 21, 17, 19, 17, 20, 13, 19, 13, 17, 13, 19, 13,
        20, 13, 15, 17, 20, 13, 15, 17, 21, 16, 17, 20, 21, 16, 22, 21,
        20, 29, 20,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 16, 20, 16, 17, 16, 13, 16,
        17, 16, 20, 16, 17, 16, 13, 16
    };
    // 每次音调响的时长
    __code unsigned int rhythm[] = {
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        12,
        4, 1, 1, 1, 1, 4, 4,
        3, 1, 3, 1, 4, 4,
        4, 4, 3, 1, 2, 2,
        12, 2, 2,
        4, 1, 1, 1, 1, 4, 4,
        2, 2, 2, 2, 2, 2, 2, 2,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 1, 1, 1, 1, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 8,
        4, 1, 1, 1, 1, 4, 4,
        3, 1, 3, 1, 4, 4,
        4, 4, 2, 2, 2, 2,
        12, 2, 2,
        4, 1, 1, 1, 1, 4, 4,
        2, 2, 2, 2, 2, 2, 2, 2,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
        4, 1, 1, 1, 1, 4, 4,
        3, 1, 3, 1, 4, 4,
        4, 4, 2, 2, 2, 2,
        12, 2, 2,
        4, 1, 1, 1, 1, 4, 4,
        2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 1, 1,
        2, 1, 1, 1, 1, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 8,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 2,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        12, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        1, 1, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 2,
        1, 1, 2, 2, 2, 2, 2, 2, 2,
        2, 2, 2, 2, 2, 2, 2, 34
    };
    // 累加器
    unsigned char i = 0;

    while (1)
    {
        h = (65536 - 1000000/pitch[tone[i] - 1]/2) / 256;
        l = (65536 - 1000000/pitch[tone[i] - 1]/2) % 256;
        // 为定时/计数器0指定时间初值（1ms=1000次）
        TH0 = h;
        TL0 = l;
        // 为定时/计数器0开启计数
        TR0 = 1;
        delay(rhythm[i] * 300);
        // 为定时/计数器0关闭计数
        TR0 = 0;
        // 蜂鸣器断电
        P1_0 = 0;
        // 累加器增加
        i += 1;
        i %= sizeof(tone)/sizeof(tone[0]);
    }
}

void timer0(void) __interrupt 1
{
    // 阻止计数
    TR0 = 0;

    // 业务代码
    if (P1_0) P1_0 = 0;
    else P1_0 = 1;

    // 重新指定计数初值
    TH0 = h;
    TL0 = l;
    // 恢复计数
    TR0 = 1;
}

完成

参考文献

原创力文档——ppiano