Too many arguments to function 'int digitalRead(uint8_t)'

Projects Programming
1

So i got this error today while trying to upload the code, I'm not quite sure what exactly means or what I can I do to fix it. I feel like this might be something pretty obvious but i can't find the problem, tried google and that didn't help a lot either. Would appreciate the help!

 const int sensorPin = A0;
const float baselineTemp = 20.0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600); // opens a serial port
  for(int pinNumber = 2; pinNumber<5; pinNumber++){  
  pinMode(pinNumber, OUTPUT);
  digitalWrite(pinNumber, LOW);
  }

}

void loop() {
  // put your main code here, to run repeatedly:
int sensorVal = analogRead(sensorPin);
Serial.print(" Sensor Value ");
Serial.print(sensorVal);
// Convert the ADC reading to voltage
float voltage = (sensorVal/1024.0)*5.0;
Serial.print(" ,Volts: ");
Serial.print(voltage);
Serial.print(" , degrees C: ");
// convert the voltage to temperature in degrees
float temperature = (voltage - .5) * 100;
Serial.print(temperature);
if(temperature < baselineTemp+2){
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  }else if(temperature >= baselineTemp+2 && temperature < baselineTemp+4){
    digitalRead(2,HIGH);
    digitalRead(3,LOW);
    digitalRead(4,LOW);
  }else if(temperature >= baselineTemp+4 && temperature < baselineTemp+6){
    digitalRead(2,HIGH);
    digitalRead(3,HIGH);
    digitalRead(4,LOW);  <---- THIS IS THE ERROR LINE
  } else if(temperature >= baselineTemp+2 && temperature < baselineTemp+6){
    digitalWrite(2,HIGH);
    digitalWrite(3,HIGH);
    digitalWrite(4,HIGH);
  }
  delay(1);
}
2 
    digitalRead(2,HIGH);
    digitalRead(3,LOW);
    digitalRead(4,LOW);

Notice the difference between that and

val = digitalRead(inPin);     // read the input pin
3

evanmars:

    digitalRead(2,HIGH);

digitalRead(3,LOW);
    digitalRead(4,LOW);




Notice the difference between that and

val = digitalRead(inPin);    // read the input pin

******, you're so right! I feel really embarrassed right now. Last time i code with only 3 hours of sleep one me. Thanks for pointing that out!

Moderator edit: language.

4

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