BT631D Bluetooth 5.3 Module LE Audio Code Migration
LE Audio Code Migration Need tools
Current experimental platform and environment
Test platform: BT631D (NRF5340)
SDK version: NCS2.3.0
nRF5340 Bluetooth 5.3 Module Matter & LE Audio FSC-BT631D
Product Overview
Need to implement LE audio content
LC3 encoding and decoding
LE transmission encoding data
Support for multiple streaming functions
Support CIS unicast audio function
Support BIS broadcast audio function
Embed protocol stack contents
The execution sequence and flowchart are shown below
The gateway receives audio data from the audio source.
The gateway processes audio data in its application core and transmits data through the application layer:
The host sends the encoded audio data to the network kernel subsystem (controller).
The subsystem forwards audio data LE to the hardware radio and sends it to the headphone device.
The headphone receives encoded audio data on the network core.
The network kernel subsystem (controller) sends encoded audio data to the LE host on the headphone application core.
Headphones process audio data in their application cores, which transmit data through the application layer:
The decoded audio data is sent to the hardware audio output through I2S.
Attention points
Le audio is currently a new technology with few mature product solutions on the market, complex engineering, and many problems that need to be solved!
Summary
The LE audio code migration process is very complex, but the BT631D module testing results are relatively good after migration.
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