arduino UNO开发板读取电位器的电压,将数值显示在3461BS4段数码管上,格式为0.000,并且位选接在引脚10-13上,生成具体代码
时间: 2024-02-17 18:04:38 浏览: 82
好的,以下是可以实现这个功能的Arduino代码:
```c
// 定义数码管引脚
const int segA = 2;
const int segB = 3;
const int segC = 4;
const int segD = 5;
const int segE = 6;
const int segF = 7;
const int segG = 8;
const int segDP = 9;
// 定义位选引脚
const int digit1 = 10;
const int digit2 = 11;
const int digit3 = 12;
const int digit4 = 13;
// 定义电位器引脚
const int potPin = A0;
void setup() {
// 设置数码管引脚为输出模式
pinMode(segA, OUTPUT);
pinMode(segB, OUTPUT);
pinMode(segC, OUTPUT);
pinMode(segD, OUTPUT);
pinMode(segE, OUTPUT);
pinMode(segF, OUTPUT);
pinMode(segG, OUTPUT);
pinMode(segDP, OUTPUT);
// 设置位选引脚为输出模式
pinMode(digit1, OUTPUT);
pinMode(digit2, OUTPUT);
pinMode(digit3, OUTPUT);
pinMode(digit4, OUTPUT);
}
void loop() {
// 读取电位器电压
int potValue = analogRead(potPin);
// 将整数值转换为小数值
float voltage = potValue * 5.0 / 1023.0;
// 将电压值格式化为字符串
char voltageStr[6];
sprintf(voltageStr, "%.3f", voltage);
// 在数码管上显示电压值
for (int i = 0; i < 4; i++) {
// 设置位选引脚
digitalWrite(digit1, i == 0 ? LOW : HIGH);
digitalWrite(digit2, i == 1 ? LOW : HIGH);
digitalWrite(digit3, i == 2 ? LOW : HIGH);
digitalWrite(digit4, i == 3 ? LOW : HIGH);
// 显示相应数字
switch (voltageStr[i]) {
case '0':
digitalWrite(segA, HIGH);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, HIGH);
digitalWrite(segE, HIGH);
digitalWrite(segF, HIGH);
digitalWrite(segG, LOW);
digitalWrite(segDP, LOW);
break;
case '1':
digitalWrite(segA, LOW);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, LOW);
digitalWrite(segE, LOW);
digitalWrite(segF, LOW);
digitalWrite(segG, LOW);
digitalWrite(segDP, LOW);
break;
case '2':
digitalWrite(segA, HIGH);
digitalWrite(segB, HIGH);
digitalWrite(segC, LOW);
digitalWrite(segD, HIGH);
digitalWrite(segE, HIGH);
digitalWrite(segF, LOW);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '3':
digitalWrite(segA, HIGH);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, HIGH);
digitalWrite(segE, LOW);
digitalWrite(segF, LOW);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '4':
digitalWrite(segA, LOW);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, LOW);
digitalWrite(segE, LOW);
digitalWrite(segF, HIGH);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '5':
digitalWrite(segA, HIGH);
digitalWrite(segB, LOW);
digitalWrite(segC, HIGH);
digitalWrite(segD, HIGH);
digitalWrite(segE, LOW);
digitalWrite(segF, HIGH);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '6':
digitalWrite(segA, HIGH);
digitalWrite(segB, LOW);
digitalWrite(segC, HIGH);
digitalWrite(segD, HIGH);
digitalWrite(segE, HIGH);
digitalWrite(segF, HIGH);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '7':
digitalWrite(segA, HIGH);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, LOW);
digitalWrite(segE, LOW);
digitalWrite(segF, LOW);
digitalWrite(segG, LOW);
digitalWrite(segDP, LOW);
break;
case '8':
digitalWrite(segA, HIGH);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, HIGH);
digitalWrite(segE, HIGH);
digitalWrite(segF, HIGH);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '9':
digitalWrite(segA, HIGH);
digitalWrite(segB, HIGH);
digitalWrite(segC, HIGH);
digitalWrite(segD, HIGH);
digitalWrite(segE, LOW);
digitalWrite(segF, HIGH);
digitalWrite(segG, HIGH);
digitalWrite(segDP, LOW);
break;
case '.':
digitalWrite(segA, LOW);
digitalWrite(segB, LOW);
digitalWrite(segC, LOW);
digitalWrite(segD, LOW);
digitalWrite(segE, LOW);
digitalWrite(segF, LOW);
digitalWrite(segG, LOW);
digitalWrite(segDP, HIGH);
break;
}
// 等待一段时间
delay(2);
}
}
```
请注意,这只是一个简单的示例代码,可能需要根据具体硬件和需求进行修改。
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