public EltradeFiscalDeviceResponsePackage Send(EltradeFiscalDeviceRequestPackage package)
{
if (ReferenceEquals(null, package))
{
throw new ArgumentNullException(nameof(package));
}
response = EltradeFiscalDeviceResponsePackage.Empty;
try
{
serialPort.DataReceived += Read;
var bytes = package.Build(true);
reading = true;
log.Debug($"0x{package.Command.ToString("x2").ToUpper()} => {package.GetType().Name} {package.DataString}");
serialPort.Write(bytes, 0, bytes.Length);
var wait = 0;
while (reading && wait++ < 500) // mynkow
{
Thread.Sleep(10); // KnowHow: https://social.msdn.microsoft.com/Forums/en-US/ce8ce1a3-64ed-4f26-b9ad-e2ff1d3be0a5/serial-port-hangs-whilst-closing?forum=Vsexpressvcs
}
serialPort.DataReceived -= Read;
if (response?.Data?.Length != 0)
{
log.Debug($"0x{response.Command.ToString("x2").ToUpper()} Response => {response.GetHumanReadableData()}");
}
}
catch (IOException ex)
{
log.Warn("Repopening port", ex);
response = null;//mynkow
Dispose();
FindFiscalDevicePort();
}
catch (Exception ex)
{
log.Error("PAFA!", ex);
response = null;//mynkow
throw;
}
return(response);
}
public void Commit()
{
while (requests.Count != 0)
{
var request = requests.Dequeue();
EltradeFiscalDeviceResponsePackage response = null;
var success = false;
for (int i = 0; i < 10; i++)
{
try
{
response = driver.Send(request.Request);
if (response is null)
{
continue;
}
success = true;
break;
}
catch (Exception)
{
Thread.Sleep(10);
}
}
if (success == false)
{
requests.Clear();
return;
}
if (request.Then is null)
{
continue;
}
var @continue = request.Then(response);
if (@continue == false)
{
requests.Clear();
}
}
}
private void Read(object sender, SerialDataReceivedEventArgs e)
{
var serialPortSender = sender as SerialPort;
var buffer = new byte[serialPortSender.ReadBufferSize];
while (reading)
{
try
{
buffer = new byte[serialPortSender.ReadBufferSize];
var readBytes = serialPortSender.Read(buffer, 0, serialPortSender.ReadBufferSize);
response = new EltradeFiscalDeviceResponsePackage(buffer.Take(readBytes).ToArray());
if (response.Printing)
{
Thread.Sleep(SynWaitMilliseconds);
continue;
}
else
{
reading = false;
}
}
catch (TimeoutException ex)
{
log.Error(ex.Message, ex);
response = null;//mynkow
}
catch (Exception ex)
{
log.Error(ex.Message, ex);
response = null;//mynkow
reading = false;
}
}
}
private bool CheckPortConnectivity(string portName, byte[] bytes)
{
log.Debug("Start CheckPortConnectivity");
if (string.IsNullOrEmpty(portName))
{
return(false);
}
try
{
if (ReferenceEquals(null, serialPort) || serialPort.PortName != portName)
{
if (serialPort?.PortName != portName)
{
log.Debug($"Disposing old port {serialPort?.PortName}");
serialPort?.Dispose();
}
log.Debug($"Creating serial port {portName}");
serialPort = new SerialPort(portName, 115200, Parity.None, 8, StopBits.One);
serialPort.ReadTimeout = 500;
serialPort.WriteTimeout = 500;
serialPort.Encoding = Encoding.ASCII;
serialPort.ErrorReceived += SerialPort_ErrorReceived;
}
var attempts = 0;
while (attempts < 5)
{
try
{
OpenPort();
serialPort.Write(bytes, 0, bytes.Length);
Thread.Sleep(SynWaitMilliseconds);
var buffer = new byte[serialPort.ReadBufferSize];
var readBytes = serialPort.Read(buffer, 0, serialPort.ReadBufferSize);
var response = new EltradeFiscalDeviceResponsePackage(buffer.Take(readBytes).ToArray()).GetHumanReadableData();
if (string.IsNullOrEmpty(response) == false)
{
lock (mutex)
{
lastWorkingPort = portName;
var responseElements = response.Split(',');
SerialNumber = responseElements[5];
FiscalNumber = responseElements[6];
log.Info($"---------- Fiscal device port {lastWorkingPort}, serial number {SerialNumber}, fiscal number {FiscalNumber} ----------");
}
log.Debug("End CheckPortConnectivity");
return(true);
}
attempts++;
}
catch (TimeoutException)
{
lock (mutex)
{
lastWorkingPort = string.Empty;
SerialNumber = string.Empty;
FiscalNumber = string.Empty;
}
log.Debug("End CheckPortConnectivity. Timeout.");
return(false);
}
catch (Exception ex)
{
log.Error(ex.Message, ex);
if (attempts >= 5)
{
log.Debug("End CheckPortConnectivity. Error.");
throw;
}
attempts++;
Thread.Sleep(200);
}
}
}
catch (Exception ex)
{
log.Error(ex.Message, ex);
}
log.Error($"Unable to find fiscal device on port {portName}. Check cable connection!");
return(false);
}