// Set the alert-level characteristic on the remote device
public async Task UART_Transmit(string user_input, int inputlength)
{
// try-catch block protects us from the race where the device disconnects
// just after we've determined that it is connected.
try
{
// use the converter class to convert the string into bytes
byte[] data = UART_Data_Converter.TX(user_input, inputlength);
await tx_characteristic.WriteValueAsync(data.AsBuffer(), GattWriteOption.WriteWithoutResponse);
}
catch (Exception)
{
// ignore exception
}
}
/// <summary>
/// Invoked when Windows receives data from your Bluetooth device.
/// </summary>
/// <param name="sender">The GattCharacteristic object whose value is received.</param>
/// <param name="args">The new characteristic value sent by the device.</param>
private void Characteristic_ValueChanged(GattCharacteristic sender, GattValueChangedEventArgs args)
{
var data = new byte[args.CharacteristicValue.Length];
DataReader.FromBuffer(args.CharacteristicValue).ReadBytes(data);
// Process the raw data received from the device.
var astring = UART_Data_Converter.RX(data);
var value = new UARTElement
{
sent_text = astring
};
lock (datapoints)
{
datapoints.Add(value);
}
if (ValueChangeCompleted != null)
{
ValueChangeCompleted(value);
}
}
