Notification callback is not being raise in any device and the instructions sent to the characteristics are not being written

[luissanchez0305]

Describe the bug The plugin is being used to connect a Bluetooth device to the mobile. It works up to setting the notification on the mobile device to check changes in the characteristics. I know this because the Bluetooth device starts blinking differently.

But when I try to write into a characteristic it's not raising the callback set on the notification. Secondly, the device should have a 3rd set of blinking when an instruction is written in a characteristic, which never happens.

For what is worth, I have set all the necessary code in a Android Java app and it works correctly, so the Bluetooth device is working correctly

To Reproduce Steps to reproduce the behavior:

1. Go to connect device and choose the device Instructions use up to here ´´´ // plugin initialize await BleClient.initialize()

// to connect the device await BleClient.connect(id, (deviceId) => this.onDisconnect(deviceId));

// to search in all the services and characteristics of the device and choose the right one await BleClient.getServices(id);

// to make sure there is no other notification set on the mobile device await BleClient.stopNotifications(deviceId, serviceId, characteristic);

// set the notification, this instruction change the blinking on the BT device, so it's working await BleClient.startNotifications( deviceId, serviceId, characteristicId, (value) => { console.log('current heart rate', value);

            console.log('raw', value);
            console.log('text', dataViewToText(value));
            console.log('hex', dataViewToHexString(value));
            console.log('numbers', dataViewToNumbers(value));
        }
    );

// send the instructions to the device const message = 'P : 2 , 3 , 5 , 6'; const arrayString = message.split(' '); const buffer = new ArrayBuffer(arrayString.length); const view = new DataView(buffer, 0); for (let i = 0; i < arrayString.length; i++) { let v; if ( typeof arrayString[i] === 'string' && arrayString[i].charAt(1) === 'x' ) { const hexString = arrayString[i]; const hex = hexString.replace(/^0x/, ''); v = hex.match(/[\dA-F]{2}/gi); } else if ( typeof arrayString[i] === 'number' ) { v = arrayString[i]; } else { v = new TextEncoder().encode(arrayString[i]); console.log('hex', arrayString[i], v); } view.setUint8(i,v); }

    await BleClient.disconnect(id);
    await BleClient.connect(id, (deviceId) => console.log('Disconnected from', deviceId));
    await BleClient.write(id, serviceUuid, characteristicUuid, view);

// 1st ERROR: the notification callback doesn't run

// 2nd ERROR: the notification callback doesn't run on another instruction and the 2nd blinking change never happens. Which give the idea that the written have never taken place ´´´

Expected behavior

1. Callback notification raise
2. BT device changes the set of blinking lights to acknowledge the instructions are being set correctly

Screenshots

Plugin version:

• "@capacitor-community/bluetooth-le": "^6.0.1"