esp-idf/examples/bluetooth/a2dp_sink/README.md

ESP-IDF A2DP-SINK demo
======================

Demo of A2DP audio sink role

This is the demo for user to use ESP_APIs to use Advanced Audio Distribution Profile in receiving audio stream

Options choose step:
    1. make menuconfig.
    2. enter menuconfig "Component config", choose "Bluetooth"
    3. enter menu Bluetooth, choose "Bluedroid Enable"
    4. enter menu Bluedroid Enable, choose "Classic Bluetooth"
    5. select "A2DP" and choose "SINK"

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.
component/bt: clean up the A2DP sink example 2017-03-18 04:02:54 -04:00			`ESP-IDF A2DP-SINK demo`
			`======================`
component/bt: add new example for A2DP 1. add new example for A2DP and the related btif layer source code is ported 2. modification on osi_alarm_new API to support periodic timer 3. enable macro BTA_AR_INCLUDED, BTA_AV_INCLUDED, BTA_AV_SINK_INCLUDED 4. The A2DP example cannot work and can only be built successfuly 2016-11-04 03:08:30 -04:00
			`Demo of A2DP audio sink role`

component/bt: implement A2DP source 1. Modified symbol names of A2DP sink APIs include: - esp_a2d_data_cb_t --> esp_a2d_sink_data_cb_t - esp_a2d_register_data_callback --> esp_a2d_sink_register_data_callback 2017-12-25 06:39:37 -05:00			`This is the demo for user to use ESP_APIs to use Advanced Audio Distribution Profile in receiving audio stream`
component/bt: clean up the A2DP sink example 2017-03-18 04:02:54 -04:00
			`Options choose step:`
			`1. make menuconfig.`
			`2. enter menuconfig "Component config", choose "Bluetooth"`
component/bt: implement A2DP source 1. Modified symbol names of A2DP sink APIs include: - esp_a2d_data_cb_t --> esp_a2d_sink_data_cb_t - esp_a2d_register_data_callback --> esp_a2d_sink_register_data_callback 2017-12-25 06:39:37 -05:00			`3. enter menu Bluetooth, choose "Bluedroid Enable"`
			`4. enter menu Bluedroid Enable, choose "Classic Bluetooth"`
			`5. select "A2DP" and choose "SINK"`
component/bt: clean up the A2DP sink example 2017-03-18 04:02:54 -04:00
merge from master 2017-10-16 03:19:29 -04:00			`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.`


component/bt: clean up the A2DP sink example 2017-03-18 04:02:54 -04:00			`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.`