6.9. Audio V2 Speaker SYNC

6.9.1. Overview

This example project shows USB Audio V2 speaker device, that uses feedback endpoints for synchronization.

  • PC sees a CherryUSB speaker via Device Manager

6.9.2. Project Configuration

  • In the CMakeLists.txt file, configure the type of audio playback device according to requirements. The default playback uses DAO.

  • If using the onboard Audio Codec chip, the Audio Codec type is automatically matched with the hardware based on the feature settings in boards/<board_name>/<board_name>.yaml (feature: board_codec_xxxx) by default. To specify an audio codec type, set the following in CMakeLists.txt: set(CONFIG_CODEC_NAME “wm8960”).

6.9.3. Board Setting

  • Connect a USB port on PC to the PWR DEBUG port on the development board with a USB Type-C cable

  • Connect a USB port on PC to one of USB port on the development board with a USB Type-C cable

  • According to project configuration, connect speaker to DAO interface if using DAO as player, connect headphone to headphone interface if using audio codec as player.

6.9.4. Running the example

  • Download the program and run. The computer can automatically recognize and install the USB audio driver and enumerate a device with a speaker device.

  • Select the speaker device as the default player, and the PC will play audio through the DAO interface