Object Transfer method

Hardware Arduino 101
1

Trying to understand how to use each of the services defined here: https://developer.bluetooth.org/gatt/services/Pages/ServicesHome.aspx

I noticed that all the bluetooth heart rate demos are including the service & a characteristic but the naming conventions seem very different from the methods defined on Bluetooth.org :

BLEService heartRateService("180D"); // BLE Heart Rate Service

BLECharacteristic heartRateChar

Can anyone provide an example on how to define these services?

2

Here is a definition of Nordic's UART service

// ==== create Nordic UART service =========
BLEService uartService = BLEService("6E400001B5A3F393E0A9E50E24DCCA9E");
// create characteristic
BLECharacteristic txCharacteristic = BLECharacteristic("6E400003B5A3F393E0A9E50E24DCCA9E", BLENotify , 20); // == RX on central (android app)
BLECharacteristic rxCharacteristic = BLECharacteristic("6E400002B5A3F393E0A9E50E24DCCA9E", BLEWriteWithoutResponse, 20); // == TX on central (android app)

void blePeripheralConnectHandler(BLECentral& central) {
// central connected event handler
parser.connect();
}

void blePeripheralDisconnectHandler(BLECentral& central) {
// central disconnected event handler
parser.closeConnection();
}

void rxCharacteristicWritten(BLECentral& central, BLECharacteristic& characteristic) {
int len = characteristic.valueLength();
const unsigned char data = characteristic.value();
parserCmd = parser.parse((const byte)data, len);
}

I am putting the finishing touches on a code generator Android app (pfodDesigner) that will generate custom menus for Arduino101 and other BLE cards and connect with pfodApp to display those menus and allow the user to operate buttons, sliders, sub-menus and log and plot data

see www.pfod.com.au for the current, non-BLE app and designer

3

You also need in the setup() {

// set advertised local name and service UUID
blePeripheral.setLocalName("101 BLE");
blePeripheral.setAdvertisedServiceUuid(uartService.uuid());

// add service and characteristic
blePeripheral.addAttribute(uartService);
blePeripheral.addAttribute(rxCharacteristic);
blePeripheral.addAttribute(txCharacteristic);

// assign event handlers for connected, disconnected to peripheral
blePeripheral.setEventHandler(BLEConnected, blePeripheralConnectHandler);
blePeripheral.setEventHandler(BLEDisconnected, blePeripheralDisconnectHandler);

// assign event handlers for characteristic
rxCharacteristic.setEventHandler(BLEWritten, rxCharacteristicWritten);

// begin initialization
blePeripheral.begin();

}

4

Hi !

How to use txCharacteristic in this case ?