public void Close()
{
if (_hPort != IntPtr.Zero)
{
RS232.ClosePort(_hPort);
_hPort = IntPtr.Zero;
}
}
public void Open()
{
_hPort = RS232.OpenPort(_portNum, new RS232Config
{
BaudRate = 115200,
DataBits = 8,
Parity = Parity.None,
StopBits = StopBits.One,
});
RS232.Purge(_hPort);
}
private async Task TransmitLoopAsync(CancellationToken ct)
{
ct.ThrowIfCancellationRequested();
// transmit led on/off commands
while (true)
{
// Send LED ON command [1] with 0 delimiter
Console.WriteLine("tx: LED ON");
RS232.Write(_hPort, new byte[] { 1, 0 });
await Task.Delay(BlinkInterval / 2, ct).ConfigureAwait(false);
// Send LED OFF command [2] with 0 delimiter
Console.WriteLine("tx: LED OFF");
RS232.Write(_hPort, new byte[] { 2, 0 });
await Task.Delay(BlinkInterval / 2, ct).ConfigureAwait(false);
}
}
protected virtual void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
// TODO: dispose managed state (managed objects)
}
// TODO: free unmanaged resources (unmanaged objects) and override finalizer
if (_hPort != IntPtr.Zero)
{
RS232.ClosePort(_hPort);
_hPort = IntPtr.Zero;
}
// TODO: set large fields to null
_disposedValue = true;
}
}
private async Task RecieveLoopAsync(CancellationToken ct)
{
ct.ThrowIfCancellationRequested();
var rxBuffer = new byte[RxBufferSize];
while (true)
{
await Task.Delay(PollInterval, ct).ConfigureAwait(false);
var n = RS232.Read(_hPort, rxBuffer);
if (n == 0)
{
continue;
}
var s = Encoding.ASCII.GetString(rxBuffer, 0, n);
Console.WriteLine("rx: " + s);
}
}
