Set the manufacturer data value used when advertising.
BLE.setManufacturerData(data, length)
Nothing
// begin initialization
if (!BLE.begin()) {
Serial.println("starting Bluetooth® Low Energy module failed!");
while (1);
}
byte data[5] = { 0x01, 0x02, 0x03, 0x04, 0x05};
BLE.setManufacturerData(data, 5);
// ...
// start advertising
BLE.advertise();