Set the advertised service UUID used when advertising.
BLE.setAdvertisedServiceUuid(uuid)
Nothing
// begin initialization
if (!BLE.begin()) {
Serial.println("starting Bluetooth® Low Energy module failed!");
while (1);
}
BLE.setAdvertisedServiceUuid(“19B10000-E8F2-537E-4F6C-D104768A1214");
// ...
// start advertising
BLE.advertise();