19 lines
No EOL
1 KiB
Markdown
19 lines
No EOL
1 KiB
Markdown
ESP-IDF A2DP-SINK demo
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Demo of A2DP audio sink role
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This is the demo of API implementing Advanced Audio Distribution Profile to receive an audio stream.
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For the I2S codec, pick whatever chip or board works for you; this code was written using a PCM5102 chip, but other I2S boards and chips will probably work as well. The default I2S connections are shown below, but these can be changed in menuconfig:
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| ESP pin | I2S signal |
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| :-------- | :----------- |
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| GPIO22 | LRCK |
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| GPIO25 | DATA |
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| GPIO26 | BCK |
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If the internal DAC is selected, analog audio will be available on GPIO25 and GPIO26. The output resolution on these pins will always be limited to 8 bit because of the internal structure of the DACs.
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After the program is started, other bluetooth devices such as smart phones can discover a device named "ESP_SPEAKER". Once a connection is established, audio data can be transmitted. This will be visible in the application log including a count of audio data packets. |