Pairing the Radio - K7MDL2/IC-705-BLE-Serial-Example GitHub Wiki

Pairing is simple, and will auto-reconnect as long you do not delete the Pairing from the radio.

See the SD card Wiki page if you want to use a config.ini file to configure the BT Classic target radio BT address. Otherwise ensure you have edited the default BT address in the code. A BLE address does not need to be specified.

1. Open the IC-705 Pairing Reception menu
2. Reset the M5Stack CPU module
3. On boot up the CPU will pair with the radio.
4. The Pairing Reception menu will close quickly. For BT classic you will see a confirmation code request dialog on the radio side. The device name (such as BT705 CIV Decoder) will show as connected in the Pairing/Connect menu.
5. To delete the device, touch the device name, disconnect, then long touch the device name, delete the pairing.

The radio specs says the 705 is using BT4.2 so requires the ESP32 be in compatibility mode to support both BT classic and BLE, which the 705 does. BT5 is not the same as BT4.2 and earlier. Will be interesting to try with BLE dongles on my IC-905 and other radios like the 9700.