0
const int pingPin = 7;
const int ledPin = 11;
const int ledPin2 = 10;
int ledLevel = 0;
int ledLevel2 = 255;
int constraint = 0;
void setup()
{
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}
void loop()
{
long duration, inches, cm;
pinMode(pingPin, OUTPUT);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);
constraint = constrain(duration, 500, 8000);
ledLevel = map(constraint, 500, 8000, 255, 0);
if (ledLevel < 192) {
analogWrite(ledPin, ledLevel);
ledLevel2 = ledLevel2 - 255;
} else if (ledlevel >= 192) {
analogWrite(ledPin, ledLevel);
analogWrite(ledPin2, ledLevel2);
}
Serial.println(duration);
delay(100);
}
這是我的arduino代碼,當有人開始走向超聲波傳感器時,它會打開一個led,當他們獲得3/4的方式打開第二個led時。當我嘗試編譯它時出現「'ledLevel'未在此範圍內聲明」,並突出顯示else if語句。arduino else if語句錯誤
哦,我的天哪!我覺得很愚蠢!非常感謝。 – Michaelslec
適合所有人,大聲笑。請註冊並標記爲答案。 –