This page will document how to demonstrate an end to end full duplex BLE voice/audio solution using two CC26x2 devices.
In this demo, data flows bidirectionally between a streamer (GATT server) and a receiver (GATT client) device. This means both devices must act as both a GATT client and a GATT server.
The peripheral_bidirectional_audio project is a modified version of
simple_peripheral from the BLE5-Stack component of the CC26x2 SDK.
The theory and steps required to run the demo are described in the readme
inside the central_bidirectional_audio folder of this repo.
In the bidirectional audio demo, the peripheral device is intended to be headless and run on a battery. However, there is display and menu support built in for debugging purposes.
You can use the menu system to change the audio input/output configuration on the fly. However, these must be configured before audio streaming starts. Once audio streaming starts, the configuration is locked until streaming stops.
The support options are:
- MIC_ONBOARD: use the microphone on the CC3200_AUDBOOST
- LINE_IN: Use an input device connected to LINE_IN connector on CC3200_AUDBOOST
- LINE_OUT: Sound is routed to LINE_OUT connector on the CC3200_AUDBOOST, line level
- HEADPHONE: Sound is routed to LINE_OUT connector, headphone level