V0.5.1

apply a new resync method that is friendly to TWS headphones

V0.5.0

V0.5.0 Very Stable Version

1. fixed paired list storage bug
2. fixed noise bug
3. functional led light logic
4. functional pairing key logic

V0.3.0

1. It will not have noise anymore
2. remove useless i2s code
3. led will not flash

V0.2.0

Can save paired device info(link list) to Pico's storage.
Repower Pico W will try reconnecting the last device; if not, short-press the key to reconnect.
Long press the key will clear the list and start pairing a new device

V0.1.5

V0.1.5
You can reconnect the device. Short press the key when the LED does not blink will reconnect the last connected device.
But BTstack may not save data to Pico's storage. So the last connected device info will be lost if you power off the Pico.

V0.1

Support 44100 Hz sample rate.
Use usb_sound_card.c for the USB port
Use sbc codec
The buffer pool is unstable. If BT audio has noise, press the key to resync the buffer