Question

我希望我的代码在代码的第一部分之后停止运行，并等到开关更改状态后再运行...我似乎找不到找到该命令的命令！任何帮助表示赞赏。我已将代码标记到一半，我希望将其停止。

int switchState = 0;
void setup() {
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(2,INPUT);
}

void loop() {
  switchState = digitalRead(2);
  if (switchState == LOW) {
    // The button is not pressed
    delay(250);
    digitalWrite(3, HIGH);
    delay(250);
    digitalWrite(4, HIGH);
    delay(250);
    digitalWrite(5, HIGH);
    delay(500);
    digitalWrite(3, LOW);
    delay(250);
    digitalWrite(4, LOW);
    delay(250);
    digitalWrite(5, LOW);
    delay(1000);
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, HIGH); // red LED
    digitalWrite(5, HIGH); // red LED
    delay(100);
    digitalWrite(3, LOW); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
    delay(100);
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, HIGH); // red LED
    digitalWrite(5, HIGH); // red LED
    delay(100);
    digitalWrite(3, LOW); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
    delay(100);
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, HIGH); // red LED
    digitalWrite(5, HIGH); // red LED
    delay(100);
    digitalWrite(3, LOW); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
    delay(100);
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, HIGH); // red LED
    digitalWrite(5, HIGH); // red LED
    delay(100);
    digitalWrite(3, LOW); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
    delay(1000);
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
// HERE IS WHERE I WANT TO HALT THE EXECUTION OF THE FIRST PART OF THE CODE
  }
  else {
    digitalWrite(3, LOW); // green LED
    digitalWrite(4, HIGH); // red LED
    digitalWrite(5, HIGH); // red LED
    delay(250); // wait quarter of a second
    digitalWrite(4, HIGH); // red LED
    digitalWrite(5, LOW); // red LED
    delay(250); // wait quarter of a second
  }

} // go back to beginning of loo

我希望我的代码在代码的第一部分之后停止运行，并等到开关更改状态后再运行...我似乎找不到找到该命令的命令！任何帮助表示赞赏。我已将代码标记到一半，我希望将其停止。

Answer 1

您可以通过最后一个状态变量轻松实现此目标：

int switchState = 0;
int lastSwitchState = 2;

void setup() {
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(2,INPUT);
}

void loop() {
  switchState = digitalRead(2);
  if (switchState != lastSwitchState) {  
    if (switchState == LOW) {
        // The button is not pressed
        delay(250);
        digitalWrite(3, HIGH);
        // ...
        // HERE IS WHERE I WANT TO HALT THE EXECUTION OF THE FIRST PART OF THE CODE
        lastSwitchState = switchState;
    } else {
        // ...  
        digitalWrite(5, LOW); // red LED
        delay(250); // wait quarter of a second
        lastSwitchState = switchState;
    }
  } else {
    // Implement powersave state or idle procedure  
  }
} // go back to beginning of the loop

此代码仅检查当前值是否等于最后一个值。如果它们不同，它只会执行您的核心代码。如果它们（switchState和lastSwitchState）相同，则可以输入节电过程或仅输入无限循环。因此，除非值已更改，否则循环将在下一次迭代时“暂停”。

Arduino-如何停止循环并等待下一个命令？

1 个答案: