Reads incoming serial data. read() inherits from the Stream utility class.

Serial.read()

Arduino Mega only:
Serial1.read()
Serial2.read()
Serial3.read()

None

the first byte of incoming serial data available (or -1 if no data is available) - int

int incomingByte = 0;   // for incoming serial data
 
void setup() {
        Serial.begin(9600);     // opens serial port, sets data rate to 9600 bps
}
 
void loop() {
 
        // send data only when you receive data:
        if (Serial.available() > 0) {
                // read the incoming byte:
                incomingByte = Serial.read();
 
                // say what you got:
                Serial.print("I received: ");
                Serial.println(incomingByte, DEC);
        }
}

• begin()
• end()
• available()
• read()
• peek()
• parseInt()
• flush()
• print()
• println()
• write()
• SerialEvent()
• Stream.read()

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