Support of Bluetooth headphones
datenzar opened this issue · comments
Instead of using the Headphone Jack, the ESP32 could also stream the sound to Bluetooth headphones. Unfortunately according to this ticket, it's not integrated into the ESP32 Arduino library but maybe someone has an idea. If I find the time, maybe I will work on it myself.
Feedback welcome!
It should work with this library: https://github.com/pschatzmann/ESP32-A2DP.git
So far I've just been testing a2dp-sink and it turned out it's critical because auf lack of memory. What could (probably) improve this situation is to use PSRAM (available on boards that make use of ESP32-WROVER). But to be honest I'd prefer to have a solution that runs on ESP32-WROOM as well. When I was out for a run last week I had an idea: adding a new modification-card that toggles between "normal" output and a2dp-sink (or in your case stream-server, respectively). However, would be necessary to delete+free the instance dynamically, that's not used at that time, in order to save memory.
So far it's just an idea. Didn't put any efforts on it, yet.
Thanks for the link, I will check it out!
You're right regarding memory. Either work hard on using it most efficiently or use a board with more PSRAM. I will test the library when I find time.
At least a2dp-sink, it runs really fine (didn't test anything else so far). Just did a test yesterday and all code, that was necessary, is:
`
#include <Arduino.h>
#include "BluetoothA2DPSink.h"
BluetoothA2DPSink a2dp_sink;
#define I2S_DOUT 25
#define I2S_BCLK 26
#define I2S_LRC 27
void setup() {
i2s_pin_config_t pin_config = {
.bck_io_num = I2S_BCLK,
.ws_io_num = I2S_LRC,
.data_out_num = I2S_DOUT,
.data_in_num = I2S_PIN_NO_CHANGE
};
a2dp_sink.set_pin_config(pin_config);
a2dp_sink.start("a2dp-sink");
}
void loop() {
}
`
BTsink is fully integrated now. Guess "your feature" needs support by the creator of the bt-lib. Here's an interesting discussion where he's been involved: pschatzmann/ESP32-A2DP#11
I don't use ESP8266Audio but in the end should be the same.