read()

Description

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

Syntax

Serial.read()

Parameters

None

Returns

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

Example

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);
  }
}
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