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Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. If see any errors or have any comments, let us know.

Class | Serial
Name |

### peek()

Examples |
    int val;

    void setup() {
      Serial.begin(9600);
    }

    void loop() {
      if ( Serial.available() > 0) {
        val = Serial.peek();
        Serial.print("Next byte available is: ");
        Serial.println(val);
      }
    }
Description | Returns the value of the next byte available without doing a reading.
Syntax |
    serial.peek()
Parameters |

serial | The hardware serial port, it can be Serial, Serial1 or if available Serial 2, Serial3.

Returns | int: The value for the next byte of data available or -1 if no data is available.
Usage | Application

Updated on July 07, 2011 11:08:54pm PDT