public static string GetOneCom()
{
if (SerialPortTran.IsTheDevice(FirstCom))
{
return(FirstCom);
}
{
string[] sValues = SerialPort.GetPortNames(); // keyCom.GetValueNames();
foreach (string sValue in sValues)
{
if (sValue != FirstCom)
{
try
{
bool b = SerialPortTran.IsTheDevice(sValue);
if (b)
{
FirstCom = sValue;
return(sValue);
}
}
catch (Exception ex) {
_tracing.Error(ex, "failed to try connect and send test ." + sValue);
}
}
}
}
return("");
}
public static Dictionary <string, string> GetComList()
{
Dictionary <string, string> result = new Dictionary <string, string>();
RegistryKey keyCom = Registry.LocalMachine.OpenSubKey("Hardware\\DeviceMap\\SerialComm");
if (keyCom != null)
{
string[] sSubKeys = keyCom.GetValueNames();
foreach (string sName in sSubKeys)
{
string sValue = (string)keyCom.GetValue(sName);
try {
bool b = SerialPortTran.IsTheDevice(sValue);
if (b)
{
result.Add(sValue, sName);
}
}
catch (Exception ex)
{
_tracing.Error(ex, "failed to GetComList ." + sValue);
}
}
}
return(result);
}
public static bool IsTheDevice(string port)
{
SerialPortTran spt;
try
{
SerialPortFixer.Execute(port);
spt = new SerialPortTran(port, false);
spt.SPWrite(Utils.HexToByte("681600000A"));
string result = "";
Thread.Sleep(100);
result = spt.spReadOnce();
spt.sp.Close();
if (result.StartsWith("6817"))
{
return(true);
}
}
catch
{
return(false);
}
finally
{
}
return(false);
}
private static Dictionary <string, string> test2()
{
Dictionary <string, string> result = new Dictionary <string, string>();
string[] spname = SerialPort.GetPortNames();
if (spname.Length > 0)
{
foreach (string spName in spname)
{
result.Add(spName, spName);//得到所有串口号
try
{
bool b = SerialPortTran.IsTheDevice(spName);
}
catch { }
}
}
return(result);
}