public void AddUsage(string connectionId, string portName, SerialPort serialPort)
{
if (string.IsNullOrWhiteSpace(connectionId))
{
throw new ArgumentException($"{nameof(connectionId)} cannot be empty", nameof(connectionId));
}
if (string.IsNullOrWhiteSpace(portName))
{
throw new ArgumentException($"{nameof(portName)} cannot be empty", nameof(portName));
}
if (serialPort == null)
{
throw new ArgumentNullException(nameof(serialPort));
}
if (ExistsFor(connectionId, portName))
{
throw new ArgumentException($"{nameof(connectionId)} {connectionId} is already using port {portName}");
}
PortUsage newUsage = new PortUsage(connectionId, portName, serialPort);
portUsages.Add(newUsage);
}
public void Send(string connectionId, string textToSend)
{
log.Trace($"SerialPortManager attempting send of \\{textToSend}\\.");
if (!_portUsages.ExistsFor(connectionId))
{
log.Trace($"Connection {connectionId} has no open port, and therefore nothing can be sent.");
throw new InvalidOperationException($"Connection {connectionId} has no open port, and therefore nothing can be sent.");
}
PortUsage pu = _portUsages.FromConnectionId(connectionId);
log.Trace($"sending to port {pu.PortName}");
pu.SerialPort.Write(textToSend);
log.Trace($"SerialPortManager sent \\{textToSend}\\ to port {pu.PortName}.");
}
private void _serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
SerialPort sp = (SerialPort)sender;
string data = sp.ReadExisting();
log.Trace("Received : " + data);
PortUsage pu = _portUsages.FromPort(sp);
pu.InputAccumulator += data;
if (pu.InputAccumulator.Contains(sp.NewLine))
{
log.Trace("Sent : " + pu.InputAccumulator);
int eol = pu.InputAccumulator.IndexOf(sp.NewLine);
string line = pu.InputAccumulator.Substring(0, eol + 1);
eol = pu.InputAccumulator.LastIndexOf(sp.NewLine);
pu.InputAccumulator = pu.InputAccumulator.Substring(eol + 1);
_hubContext.Clients.Client(pu.ConnectionId).dataReceived(sp.PortName, line);
}
}
public void RemoveUsage(string connectionId, string portName)
{
if (string.IsNullOrWhiteSpace(connectionId))
{
throw new ArgumentException($"{nameof(connectionId)} cannot be empty", nameof(connectionId));
}
if (string.IsNullOrWhiteSpace(portName))
{
throw new ArgumentException($"{nameof(portName)} cannot be empty", nameof(portName));
}
if (!ExistsFor(connectionId, portName))
{
throw new ArgumentException($"{nameof(connectionId)} {connectionId} is not using port {portName}");
}
PortUsage itemToRemove = portUsages.Single(pu => pu.ConnectionId == connectionId && pu.PortName == portName);
itemToRemove.Dispose();
portUsages.Remove(itemToRemove);
}