Generates a square wave of the specified frequency from the Esplora's onboard buzzer. A duration can be specified in milliseconds, otherwise the wave continues until a call to Esplora.noTone().
Only one tone can be generated at a time. If a tone is already playing, the call will set its frequency.
Use of the tone() function will interfere with fading the red LED.
frequency: the frequency of the tone in hertz - unsigned int
duration: the duration of the tone in milliseconds (optional) - unsigned long
Corrections, suggestions, and new documentation should be posted to the Forum.
The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.