4位数码管实验

代码

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//设置阴极接口
int a = 1; 
int b = 2; 
int c = 3; 
int d = 4; 
int e = 5; 
int f = 6; 
int g = 7; 
int p = 8; 
//设置阳极接口
int d4 = 9; 
int d3 = 10; 
int d2 = 11; 
int d1 = 12; 
//设置变量 16. 
int del = 100; 
int buttoncount = 0; 
int loopcount = 0; 
void setup() 
{ 
    pinMode(d1, OUTPUT); 
    pinMode(d2, OUTPUT); 
    pinMode(d3, OUTPUT); 
    pinMode(d4, OUTPUT); 
    pinMode(a, OUTPUT); 
    pinMode(b, OUTPUT); 
    pinMode(c, OUTPUT); 
    pinMode(d, OUTPUT); 
    pinMode(e, OUTPUT); 
    pinMode(f, OUTPUT); 
    pinMode(g, OUTPUT); 
    pinMode(p, OUTPUT); 
    digitalWrite(a, HIGH); 
    digitalWrite(b, HIGH); 
    digitalWrite(c, HIGH); 
    digitalWrite(d, HIGH); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, HIGH); 
    digitalWrite(p, HIGH); 
} 
void loop() 
{ 
    roulette(4); //轮转效果  
    delay(100); 
    zigzag(2); //Z 字型效果 
    delay(100); 
    circles(4); //圈状效果
    delay(100); 
} 

void pickDigit(int x) //定义 pickDigit(x),其作用是 开启 dx 端口
{ 
    digitalWrite(d1, LOW); 
    digitalWrite(d2, LOW); 
    digitalWrite(d3, LOW); 
    digitalWrite(d4, LOW); 

    switch(x) 
    { 
        case 1: 
            digitalWrite(d1, HIGH); 
            break; 
        case 2: 
            digitalWrite(d2, HIGH); 
            break; 
        case 3: 
            digitalWrite(d3, HIGH); 
            break; 
        default: 
            digitalWrite(d4, HIGH); 
            break; 
    } 
} 

void clearLEDs() //清屏 
{ 
    digitalWrite(a, HIGH); 
    digitalWrite(b, HIGH); 
    digitalWrite(c, HIGH); 
    digitalWrite(d, HIGH); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, HIGH); 
    digitalWrite(p, HIGH); 
} 

void roulette(int x) //设置轮转效果
{ 
    loopcount = 0; 
    while (loopcount < x) 
    { 
        digitalWrite(a, LOW); 
        pickDigit(1); 
        delay(del); 
        pickDigit(2); 
        delay(del); 
        pickDigit(3); 
        delay(del); 
        pickDigit(4); 
        delay(del); 
        digitalWrite(a, HIGH); 
        digitalWrite(b, LOW); 
        delay(del); 
        digitalWrite(b, HIGH); 
        digitalWrite(c, LOW); 
        delay(del); 
        digitalWrite(c, HIGH); 
        digitalWrite(d, LOW); 
        delay(del); 
        pickDigit(3); 
        delay(del); 
        pickDigit(2); 
        delay(del); 
        pickDigit(1); 
        delay(del); 
        digitalWrite(d, HIGH); 
        digitalWrite(e, LOW); 
        delay(del); 
        digitalWrite(e, HIGH); 
        digitalWrite(f, LOW); 
        delay(del); 
        clearLEDs(); 
        loopcount++; 
    } 
} 

void zigzag(int x) //设置 Z 字形效果 
{ 
    loopcount = 0; 
    while(loopcount < x) 
    { 
        digitalWrite(a, LOW); 
        pickDigit(1); 
        delay(del); 
        pickDigit(2); 
        delay(del); 
        pickDigit(3); 
        delay(del); 
        pickDigit(4); 
        delay(del); 
        digitalWrite(a, HIGH); 
        digitalWrite(b, LOW); 
        delay(del); 
        digitalWrite(b, HIGH); 
        digitalWrite(g, LOW); 
        delay(del); 
        pickDigit(3); 
        delay(del); 
        pickDigit(2); 
        delay(del); 
        pickDigit(1); 
        delay(del); 
        digitalWrite(g, HIGH); 
        digitalWrite(e, LOW); 
        delay(del); 
        digitalWrite(e, HIGH); 
        digitalWrite(d, LOW); 
        delay(del); 
        pickDigit(2); 
        delay(del); 
        pickDigit(3); 
        delay(del); 
        pickDigit(4); 
        delay(del); 
        digitalWrite(d, HIGH); 
        digitalWrite(c, LOW); 
        delay(del); 
        digitalWrite(c, HIGH); 
        digitalWrite(g, LOW); 
        delay(del); 
        pickDigit(3); 
        delay(del); 
        pickDigit(2); 
        delay(del); 
        pickDigit(1); 
        delay(del); 
        digitalWrite(g, HIGH); 
        digitalWrite(f, LOW); 
        delay(del); 
        clearLEDs(); 
        loopcount++; 
    } 
} 

void circles(int x) //设置圈状效果 
{ 
    loopcount = 0; 
    while (loopcount < x) 
    { 
        digitalWrite(a, LOW); 
        digitalWrite(b, LOW); 
        digitalWrite(f, LOW); 
        digitalWrite(g, LOW); 
        pickDigit(1); 
        delay(250); 
        digitalWrite(a, HIGH); 
        digitalWrite(b, HIGH); 
        digitalWrite(f, HIGH); 
        digitalWrite(c, LOW); 
        digitalWrite(d, LOW); 
        digitalWrite(e, LOW); 
        pickDigit(2); 
        delay(250); 
        digitalWrite(a, LOW); 
        digitalWrite(b, LOW); 
        digitalWrite(f, LOW); 
        digitalWrite(c, HIGH); 
        digitalWrite(d, HIGH); 
        digitalWrite(e, HIGH); 
        pickDigit(3); 
        delay(250); 
        digitalWrite(a, HIGH); 
        digitalWrite(b, HIGH); 
        digitalWrite(f, HIGH); 
        digitalWrite(c, LOW); 
        digitalWrite(d, LOW); 
        digitalWrite(e, LOW); 
        pickDigit(4); 
        delay(250); 
        clearLEDs(); 
        loopcount++; 
    } 
}

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//设置阴极接口
int a = 1; 
int b = 2; 
int c = 3; 
int d = 4; 
int e = 5; 
int f = 6; 
int g = 7; 
int p = 8; 
//设置阳极接口 
int d4 = 9; 
int d3 = 10; 
int d2 = 11; 
int d1 = 12; 
//设置变量 
long n = 0; 
int x = 100; 
int del = 55; //此处数值对时钟进行微调 

void setup() 
{ 
    pinMode(d1, OUTPUT); 
    pinMode(d2, OUTPUT); 
    pinMode(d3, OUTPUT); 
    pinMode(d4, OUTPUT); 
    pinMode(a, OUTPUT); 
    pinMode(b, OUTPUT); 
    pinMode(c, OUTPUT); 
    pinMode(d, OUTPUT); 
    pinMode(e, OUTPUT); 
    pinMode(f, OUTPUT); 
    pinMode(g, OUTPUT); 
    pinMode(p, OUTPUT); 
} 

void loop() 
{ 
    clearLEDs(); 
    pickDigit(1); 	//定义 pickDigit(x),其作用是 开启 dx 端口	
    pickNumber((n/x/1000)%10); //定义 pickNumber(x),其作用 是显示数字 x 
    delayMicroseconds(del); 

    clearLEDs(); 
    pickDigit(2); 
    pickNumber((n/x/100)%10); 
    delayMicroseconds(del); 

    clearLEDs(); 
    pickDigit(3); 
    dispDec(3); 	//设定开启小数点
    pickNumber((n/x/10)%10); 
    delayMicroseconds(del); 

    clearLEDs(); 
    pickDigit(4); 
    pickNumber(n/x%10); 
    delayMicroseconds(del); 

    n++; 

    if (digitalRead(13) == HIGH) 
    { 
        n = 0; 
    } 
} 

void pickDigit(int x) //定义 pickDigit(x),其作用是 开启 dx 端口
{ 
    digitalWrite(d1, LOW); 
    digitalWrite(d2, LOW); 
    digitalWrite(d3, LOW); 
    digitalWrite(d4, LOW); 

    switch(x) 
    { 
        case 1: 
            digitalWrite(d1, HIGH); 
            break; 
        case 2: 
            digitalWrite(d2, HIGH); 
            break; 
        case 3: 
            digitalWrite(d3, HIGH); 
            break; 
        default: 
            digitalWrite(d4, HIGH); 
            break; 
    } 
} 

void pickNumber(int x) //定义 pickNumber(x),其作用 是显示数字 x 
{ 
    switch(x) 
    { 
        default: 
            zero(); 
            break; 
        case 1: 
            one(); 
            break; 
        case 2: 
            two(); 
            break; 
        case 3: 
            three(); 
            break; 
        case 4: 
            four(); 
            break; 
        case 5: 
            five(); 
            break; 
        case 6: 
            six(); 
            break; 
        case 7: 
            seven(); 
            break; 
        case 8: 
            eight(); 
            break; 
        case 9: 
            nine(); 
            break; 
    } 
} 

void dispDec(int x) //设定开启小数点
{ 
    digitalWrite(p, LOW); 
} 

void clearLEDs() //清屏 
{ 
    digitalWrite(a, HIGH); 
    digitalWrite(b, HIGH); 
    digitalWrite(c, HIGH); 
    digitalWrite(d, HIGH); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, HIGH); 
    digitalWrite(p, HIGH); 
} 

void zero() //定义数字 0 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, LOW); 
    digitalWrite(e, LOW); 
    digitalWrite(f, LOW); 
    digitalWrite(g, HIGH); 
} 

void one() //定义数字 1 时阴极那些管脚开关
{ 
    digitalWrite(a, HIGH); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, HIGH); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, HIGH); 
} 

void two() //定义数字 2 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, LOW); 
    digitalWrite(c, HIGH); 
    digitalWrite(d, LOW); 
    digitalWrite(e, LOW); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, LOW); 
} 

void three() //定义数字 3 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, LOW); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, LOW); 
} 

void four() //定义数字 4 时阴极那些管脚开关
{ 
    digitalWrite(a, HIGH); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, HIGH); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, LOW); 
    digitalWrite(g, LOW); 
} 

void five() //定义数字 5 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, HIGH); 
    digitalWrite(c, LOW); 
    digitalWrite(d, LOW); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, LOW); 
    digitalWrite(g, LOW); 
} 

void six() //定义数字 6 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, HIGH); 
    digitalWrite(c, LOW); 
    digitalWrite(d, LOW); 
    digitalWrite(e, LOW); 
    digitalWrite(f, LOW); 
    digitalWrite(g, LOW); 
} 

void seven() //定义数字 7 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, HIGH); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, HIGH); 
    digitalWrite(g, HIGH); 
} 

void eight() //定义数字 8 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, LOW); 
    digitalWrite(e, LOW); 
    digitalWrite(f, LOW); 
    digitalWrite(g, LOW); 
} 

void nine() //定义数字 9 时阴极那些管脚开关
{ 
    digitalWrite(a, LOW); 
    digitalWrite(b, LOW); 
    digitalWrite(c, LOW); 
    digitalWrite(d, LOW); 
    digitalWrite(e, HIGH); 
    digitalWrite(f, LOW); 
    digitalWrite(g, LOW); 
}