Properties of RX and TX characteristics are not set according to Nordic’s UART Service specifications

[damir-krkljes]

After experiencing problems connecting Arduino MKR WiFi 1010 to the Serial Bluetooth Terminal application on Android using the SerialPassthrough example, I did some research. It turns out that the properties of characteristics are not set according to specs.

After changes in HardwareBLESerial.h the problem was solved. The changes are:

Instead: BLECharacteristic receiveCharacteristic = BLECharacteristic("6E400002-B5A3-F393-E0A9-E50E24DCCA9E", BLEWriteWithoutResponse, BLE_ATTRIBUTE_MAX_VALUE_LENGTH);

Should be: BLECharacteristic receiveCharacteristic = BLECharacteristic("6E400002-B5A3-F393-E0A9-E50E24DCCA9E", BLEWrite, BLE_ATTRIBUTE_MAX_VALUE_LENGTH);

Instead: BLECharacteristic transmitCharacteristic = BLECharacteristic("6E400003-B5A3-F393-E0A9-E50E24DCCA9E", BLENotify, BLE_ATTRIBUTE_MAX_VALUE_LENGTH);

Should be: BLECharacteristic transmitCharacteristic = BLECharacteristic("6E400003-B5A3-F393-E0A9-E50E24DCCA9E", BLERead | BLENotify, BLE_ATTRIBUTE_MAX_VALUE_LENGTH);

Anyway, thanks for the library.