public async Task SetupNotifications(string bleDeviceId, Dictionary <string, string> telemetryMap)
{
BLEDevice = await BLEService.Connect(bleDeviceId);
TelemetryMap = telemetryMap;
foreach (var gatt in telemetryMap)
{
var telemetryField = gatt.Value;
var pair = new GattPair(gatt.Key);
var service = await BLEDevice.GetServiceAsync(pair.ServiceId);
if (service != null) // service could be null if mapping has old values related to other devices
{
var characteristic = await service.GetCharacteristicAsync(pair.CharacteristicId);
if (characteristic != null) // like above but for characteristic
{
if (telemetryField != null)
{
await BLEService.EnableNotification(characteristic);
}
else
{
await BLEService.DisableNotification(characteristic);
}
}
}
}
MessagingCenter.Send(new ResultMessage <IDevice>(BLEDevice), Constants.BLE_DEVICE_READY);
}
public async Task <bool> CheckServiceAndCharateristics()
{
if (this.BLEDevice == null || this.BLEDevice.State != Plugin.BLE.Abstractions.DeviceState.Connected)
{
return(false);
}
this.MTU = await BLEDevice.RequestMtuAsync(517);
var service = await BLEDevice.GetServiceAsync(uuid_service);
if (service == null)
{
return(false);
}
Charateristic = await service.GetCharacteristicAsync(uuid_characteristic);
if (Charateristic == null)
{
return(false);
}
return(true);
}
public async void LED1()
{
var service = await BLEDevice.GetServiceAsync(Guid.Parse("6E400001-B5A3-F393-E0A9-E50E24DCCA9E"));
var WriteCharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"));
var ReadCharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"));
//byte[] data = new byte[] { 0x31 };
if (WriteCharacteristic != null)
{
if (WriteCharacteristic.CanWrite)
{
byte[] data = new byte[] { 0x31 };
await WriteCharacteristic.WriteAsync(data);
//byte[] readdata = new byte;
if (ReadCharacteristic.CanRead)
{
byte[] readdata = await ReadCharacteristic.ReadAsync();
if (readdata == new byte[] { 0x31 })
{
byte[] confirm = new byte[] { 0x33 };
await WriteCharacteristic.WriteAsync(confirm);
await Task.Delay(1000);
await WriteCharacteristic.WriteAsync(new byte[] { 0x36 });
}
}
}
}
}
public async void LED4()
{
var service = await BLEDevice.GetServiceAsync(Guid.Parse("6E400001-B5A3-F393-E0A9-E50E24DCCA9E"));
var characteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"));
//var RXcharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"));
//byte[] data = new byte[] { 0x31 };
if (characteristic != null)
{
if (characteristic.CanWrite)
{
byte[] data = new byte[] { 0x35 };
await characteristic.WriteAsync(data);
}
}
}
public async void ReadTest()
{
var service = await BLEDevice.GetServiceAsync(Guid.Parse("6E400001-B5A3-F393-E0A9-E50E24DCCA9E"));
//var WriteCharacteristic = await service.Get();
//var ReadCharacteristic = await service.GetCharacteristicsAsync();
var WriteCharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"));
var ReadCharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"));
System.Diagnostics.Debug.WriteLine(ReadCharacteristic);
Debug.WriteLine("Write Characteristic = " + WriteCharacteristic);
System.Diagnostics.Debug.WriteLine("Read Characteristic CanRead = " + ReadCharacteristic.CanRead);
await WriteCharacteristic.WriteAsync(new byte[] { 0x31 });
ReadCharacteristic.ValueUpdated += (s, e) =>
{
Debug.WriteLine("New value : ", e.Characteristic.Value);
};
await ReadCharacteristic.StartUpdatesAsync();
if (ReadCharacteristic.CanRead)
{
var readdata = await ReadCharacteristic.ReadAsync();
System.Diagnostics.Debug.WriteLine(readdata);
if (readdata == new byte[] { 0x31 })
{
byte[] confirm = new byte[] { 0x33 };
await WriteCharacteristic.WriteAsync(confirm);
await Task.Delay(1000);
await WriteCharacteristic.WriteAsync(new byte[] { 0x36 });
}
}
}
/*
* public async void WriteToBLE()
* {
* var services = await BLEDevice.GetServicesAsync();
* Debug.WriteLine("Test");
* if (services == null)
* return;
*
* var characteristics = await services[0].GetCharacteristicsAsync();
* var characteristic = characteristics[0];
*
* if (characteristic != null)
* {
* if (characteristic.CanWrite)
* {
* byte[] buf = new byte[] { 0x31 };
* if (ledStatus)
* {
* //buf[1] = 0x31;
* await characteristic.WriteAsync(buf);
* }
* else
* {
* //buf[1] = 0x31;
* await characteristic.WriteAsync(buf);
* }
* ledStatus = !ledStatus;
* }
* }
*
* }*/
public async void LEDSON(int lednumber)
{
var service = await BLEDevice.GetServiceAsync(Guid.Parse("6E400001-B5A3-F393-E0A9-E50E24DCCA9E"));
var WriteCharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"));
var ReadCharacteristic = await service.GetCharacteristicAsync(Guid.Parse("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"));
//byte[] data = new byte[] { 0x31 };
byte[] ledbyte = BitConverter.GetBytes(lednumber);
Array.Reverse(ledbyte);
byte[] data = ledbyte;
if (WriteCharacteristic != null)
{
if (WriteCharacteristic.CanWrite)
{
//byte[] data = new byte[] { 0x31 };
await WriteCharacteristic.WriteAsync(data);
//byte[] readdata = new byte;
if (ReadCharacteristic.CanRead)
{
byte[] readdata = await ReadCharacteristic.ReadAsync();
if (readdata == new byte[] { 0x31 })
{
byte[] confirm = new byte[] { 0x33 };
await WriteCharacteristic.WriteAsync(confirm);
await Task.Delay(1000);
await WriteCharacteristic.WriteAsync(new byte[] { 0x36 });
}
}
}
}
}