4.10 audio

This example demonstrates how to use the Linux API to control the input and output of audio,please refer to the source code for detail.

Hardware Preparation:

• Hardware debugging environment to see chapter2.

Software Preparation:

• Linux Kernel 4.1.18
• audio_test application

Test Steps:

• Copy cross compiled <WORKDIR>/Examples/audio/audio_test to /usr/bin directory of the MYD-AM335x series development board.Plug the headset into the audio output port, enter the audio input to the audio input port, enter the following command at the Linux terminal:
  

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  # audio_test rate set to 21999, expected 22000 Init capture successfully, rate: 21999, period_size: 128 rate set to 21998, expected 21999 Period size: 128 frames, buffer size: 256 bytes