[RTL8722CSM/RTL8722DM] Audio Codec – Output Sine Wave

Materials

  • Ameba D [RTL8722 CSM/DM] x 1

  • 3.5mm TRS/TRRS breakout x 1 (e.g., Adafruit 2791 / Sparkfun 11570)

Example

Procedure

Connect the 3.5mm connector to the RTL8722 board following the diagram.

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Open the example, 「Files」 -> 「Examples」 -> “AmebaAudioCodec” -> “OutputSineWave”.

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Upload the code and press the reset button on Ameba once the upload is finished.

Connect a pair of wired headphones to the 3.5mm audio jack and you should hear the generate single sinusoidal tone.