private static void GenerateSerialInfo()
{
string[] installedPortNames = PortHelper.GetPorts();
bool nullModemPresent = false;
string portName1 = null, portName2 = null, loopbackPortName = null;
Array.Sort(installedPortNames);
Console.WriteLine("Installed ports : " + string.Join(",", installedPortNames));
IList <string> openablePortNames = CheckPortsCanBeOpened(installedPortNames);
Console.WriteLine("Openable ports : " + string.Join(",", openablePortNames));
// Find any pair of ports which are null-modem connected
// If there is a pair like this, then they take precedence over any other way of identifying two available ports
for (var firstIndex = 0; firstIndex < openablePortNames.Count && !nullModemPresent; firstIndex++)
{
for (var secondIndex = firstIndex + 1; secondIndex < openablePortNames.Count && !nullModemPresent; secondIndex++)
{
var firstPortName = openablePortNames[firstIndex];
var secondPortName = openablePortNames[secondIndex];
if (SerialPortConnection.VerifyConnection(firstPortName, secondPortName))
{
// We have a null modem port
portName1 = firstPortName;
portName2 = secondPortName;
nullModemPresent = true;
Console.WriteLine("Null-modem connection from {0} to {1}", firstPortName, secondPortName);
}
}
}
if (!nullModemPresent)
{
// If we don't have a null-modem connection - check for a loopback connection
foreach (var portName in openablePortNames)
{
if (SerialPortConnection.VerifyLoopback(portName))
{
portName1 = loopbackPortName = portName;
break;
}
}
if (portName1 == null)
{
portName1 = openablePortNames.FirstOrDefault();
}
portName2 = openablePortNames.FirstOrDefault(name => name != portName1);
}
s_localMachineSerialInfo = new LocalMachineSerialInfo(portName1, portName2, loopbackPortName, nullModemPresent);
}
private static void GenerateSerialInfo()
{
string[] availablePortNames = PortHelper.GetPorts();
Debug.WriteLine("total ports : " + availablePortNames.Length);
bool nullModemPresent = false;
string portName1 = null, portName2 = null, loopbackPortName = null;
for (int i = 0; i < availablePortNames.Length; ++i)
{
SerialPort com = new SerialPort(availablePortNames[i]);
try
{
com.Open();
com.Close();
if (null == portName1)
{
portName1 = availablePortNames[i];
}
else if (null == portName2)
{
portName2 = availablePortNames[i];
break;
}
}
catch (Exception) { }
}
if (null != portName1 && SerialPortConnection.VerifyLoopback(portName1))
{
loopbackPortName = portName1;
}
if (null != portName2)
{
if (null == loopbackPortName && SerialPortConnection.VerifyLoopback(portName2))
{
loopbackPortName = portName2;
}
nullModemPresent = SerialPortConnection.VerifyConnection(portName1, portName2);
}
s_localMachineSerialInfo = new LocalMachineSerialInfo(portName1, portName2, loopbackPortName, nullModemPresent);
}
private static void GenerateSerialInfo()
{
string[] installedPortNames = PortHelper.GetPorts();
bool nullModemPresent = false;
string portName1 = null, portName2 = null, loopbackPortName = null;
Array.Sort(installedPortNames);
PrintInfo("Installed ports : " + string.Join(",", installedPortNames));
IList <string> openablePortNames = CheckPortsCanBeOpened(installedPortNames);
PrintInfo("Openable ports : " + string.Join(",", openablePortNames));
// Find any pair of ports which are null-modem connected
// If there is a pair like this, then they take precedence over any other way of identifying two available ports
for (int firstIndex = 0; firstIndex < openablePortNames.Count && !nullModemPresent; firstIndex++)
{
for (int secondIndex = firstIndex + 1; secondIndex < openablePortNames.Count && !nullModemPresent; secondIndex++)
{
string firstPortName = openablePortNames[firstIndex];
string secondPortName = openablePortNames[secondIndex];
if (SerialPortConnection.VerifyConnection(firstPortName, secondPortName))
{
// We have a null modem port
portName1 = firstPortName;
portName2 = secondPortName;
nullModemPresent = true;
PrintInfo("Null-modem connection from {0} to {1}", firstPortName, secondPortName);
}
}
}
if (!nullModemPresent)
{
// If we don't have a null-modem connection - check for a loopback connection
foreach (string portName in openablePortNames)
{
if (SerialPortConnection.VerifyLoopback(portName))
{
portName1 = loopbackPortName = portName;
break;
}
}
if (portName1 == null)
{
portName1 = openablePortNames.FirstOrDefault();
}
portName2 = openablePortNames.FirstOrDefault(name => name != portName1);
}
// See Github issues #15961, #16033, #20764 - hardware tests are currently insufficiently stable on master CI
if (loopbackPortName == null && !nullModemPresent)
{
// We don't have any supporting hardware - disable all the tests which would use just an open port
PrintInfo("No support hardware - not using serial ports");
portName1 = portName2 = null;
}
PrintInfo("First available port name : " + portName1);
PrintInfo("Second available port name : " + portName2);
PrintInfo("Loopback port name : " + loopbackPortName);
PrintInfo("NullModem present : " + nullModemPresent);
s_localMachineSerialInfo = new LocalMachineSerialInfo(portName1, portName2, loopbackPortName, nullModemPresent);
if (portName1 != null)
{
// Measure how big a packet we need to write to be sure to see blocking behaviour at a port
try
{
s_flowControlCapabilities = SerialPortConnection.MeasureFlowControlCapabilities(portName1);
}
catch (Exception e)
{
PrintInfo(e.ToString());
}
PrintInfo("{0}: Flow capabilities {1}", portName1, s_flowControlCapabilities);
}
}
