BLEPeripheralServer.onOnCharacteristicReadRequest(function callback)

onOnCharacteristicReadRequest这个应该是onCharacteristicReadRequest，多了个on

同样的下面几个函数也是

• BLEPeripheralServer.offOnCharacteristicReadRequest
• BLEPeripheralServer.offOnCharacteristicWriteRequest
• BLEPeripheralServer.onOnCharacteristicReadRequest
• BLEPeripheralServer.onOnCharacteristicWriteRequest