29 lines
1.3 KiB
ReStructuredText
Executable file
29 lines
1.3 KiB
ReStructuredText
Executable file
ESP-IDF A2DP-SINK demo
|
|
======================
|
|
|
|
Demo of A2DP audio sink role
|
|
|
|
This is the demo for user to use ESP_APIs to create a GATT Server.
|
|
|
|
Options choose step:
|
|
1. make menuconfig.
|
|
2. enter menuconfig "Component config", choose "Bluetooth"
|
|
3. enter menu Bluetooth, choose "Classic Bluetooth" and do not choose "Release DRAM from Classic BT controller"
|
|
4. choose your options.
|
|
|
|
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:
|
|
|
|
+-----------+--------------+
|
|
| ESP pin | I2S signal |
|
|
+===========+==============+
|
|
| GPIO22 | LRCK |
|
|
+-----------+--------------+
|
|
| GPIO25 | DATA |
|
|
+-----------+--------------+
|
|
| GPIO26 | BCK |
|
|
+-----------+--------------+
|
|
|
|
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.
|
|
|
|
|
|
After the program started, other bluetooth devices such as smart phones can discover this device named "ESP_SPEAKER", and after connection is established, audio data can be transmitted and there will occur a count of audio data packets printed.
|