/// <summary>
/// SendCommand
/// Asynchronous task to write to GPS through UART
/// </summary>
/// <param name="cmdString"></param>
/// <returns>async Task</returns>
private async Task SendCommandAsync(string cmdString)
{
try
{
//Launch the WriteAsync task to perform the write
Task <UInt32> storeAsyncTask;
if (cmdString.Length != 0)
{
// Load the text from the sendText input text box to the dataWriter object
DataWriterObject.WriteString(cmdString);
// Launch an async task to complete the write operation
storeAsyncTask = DataWriterObject.StoreAsync().AsTask();
UInt32 bytesWritten = await storeAsyncTask;
if (bytesWritten != cmdString.Length)
{
throw new Exception("Bytes written does not match command length");
}
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(string.Format("Error writing to GPS: {0}", ex.Message));
}
}
/// <summary>
/// DisconnectFromUART
/// Disconnects from the UART
/// </summary>
public void DisconnectFromUART()
{
if (null != DataReaderObject)
{
DataReaderObject.Dispose();
}
if (null != DataWriterObject)
{
DataWriterObject.Dispose();
}
if (null != SerialPort)
{
SerialPort.Dispose();
SerialPort = null;
}
}
/// <summary>
/// DisconnectFromUART
/// Disconnects from the UART
/// </summary>
public void DisconnectFromUART()
{
StopReading();
if (null != DataReaderObject)
{
//DataReaderObject.DetachStream();
//DataReaderObject.DetachBuffer();
DataReaderObject.Dispose();
}
if (null != DataWriterObject)
{
DataWriterObject.Dispose();
}
if (null != SerialPort)
{
SerialPort.Dispose();
SerialPort = null;
}
}
/// <summary>
/// SendCommand
/// Asynchronous task to write to GPS through UART
/// </summary>
/// <param name="command"></param>
/// <returns>async Task</returns>
private async Task SendCommandAsync(byte[] command)
{
//Launch the storeAsync task to perform the write
Task <UInt32> storeAsyncTask;
if (command.Length != 0)
{
// Load the text from the sendText input text box to the dataWriter object
DataWriterObject.WriteBytes(command);
// Launch an async task to complete the write operation
storeAsyncTask = DataWriterObject.StoreAsync().AsTask();
UInt32 bytesWritten = await storeAsyncTask;
if (bytesWritten != command.Length)
{
throw new Exception("Bytes written does not match command length");
}
}
}
