Can you provide a sample app with only FlutterBleLib plugin?

[ghost]

Hi, i am new to Flutter and Dart. I find it difficult to understand the usage of FlutterBleLib using the sample app.
There is lots of code about Bloc and rxDart which is difficult to read. Can you provide a sample app without design patten or unrelated plugins?

[mikolak]

Hi!

Creating a new simplified sample app will take time.

For the time being, you can start with just two files:
Initialisation https://github.com/Polidea/FlutterBleLib/blob/develop/example/lib/devices_list/devices_bloc.dart#L52

Scanning for peripherals:
https://github.com/Polidea/FlutterBleLib/blob/develop/example/lib/devices_list/devices_bloc.dart#L111
(same file)

Most of operations on a connected peripheral
https://github.com/Polidea/FlutterBleLib/blob/develop/example/lib/test_scenarios/peripheral_test_operations.dart

[leech001]

Still, if it is not difficult, I would like to see a simple example of using the library.

[sonnny]

See link below simple example, assumed you know device name, service and char uuid, use nrf connect to find out. It just writes to the device.

link for simple ble write example

[JasonEdinburgh]

@sonnny link http://sayaw.net/flutter/another_ble.html is broken

[sonnny]

@JasonEdinburgh good link http://orasna.com/flutter/another_ble.html

This is a basic example.

[JasonEdinburgh]

Thank you @sonnny

But I need something that shows how to catch the exceptions that are thrown when calling peripheral.connect etc.

My current code does this to initiate a connection and send/receive via characteristics (nordic uart service), but I occasionally get unhandled exceptions. I am not sure yet if they originate in other threads/isolates.

` try {
_connectPressed = true;
Peripheral peripheral = myPeripherals[widget.deviceId];
await peripheral.connect(timeout: Duration(seconds: 2)).catchError((theError) {
print("Caught Error in peripheral.connect ($theError)");
return;
});
print("connected");
await peripheral.discoverAllServicesAndCharacteristics(transactionId: "discovery").catchError((theError) {
print("Caught Error in peripheral.discoverAllServicesAndCharacteristics ($theError)");
return;
});
print("discoverAllServicesAndCharacteristics completed");
await peripheral.services().catchError((theError) {
print("Caught Error in peripheral.services ($theError)");
return;
});
await peripheral.writeCharacteristic(NUS_SERVICE_UUID, WRITE_TO_DEVICE_CHARACTERISTIC_UUID, dataToSend, withResponse).catchError((theError) {
print("Caught Error in peripheral.writeCharacteristic ($theError)");
return;
});

    peripheral.monitorCharacteristic(NUS_SERVICE_UUID, READ_FROM_DEVICE_CHARACTERISTIC_UUID).listen((characteristicWithValue) {
      talkToDevice(characteristicWithValue, peripheral);
    }).onError((theError) {
      print("Caught Error in peripheral.monitorCharacteristic ($theError)");
      return;
    });

} catch (ex, st) {
print("exception caught ${ex.toString()} at $st");
} finally {
print("finally setting _connectPressed = false");
_connectPressed = false;
}`

[ride4sun]

Is there any progress on this issue?