public List <string> GetDevicesList()
{
List <string> devices = new List <string>();
this.DevicePath = string.Empty;
myUSB.CT_HidGuid();
myUSB.CT_SetupDiGetClassDevs();
bool?result = null;
bool resultb = false;
int device_count = 0;
int size = 0;
int requiredSize = 0;
int numberOfDevices = 0;
//search the device until you have found it or no more devices in list
while (result.HasValue == false || result.Value == true)
{
//open the device
result = myUSB.CT_SetupDiEnumDeviceInterfaces(device_count);
//get size of device path
resultb = myUSB.CT_SetupDiGetDeviceInterfaceBuffer(ref requiredSize, 0);
size = requiredSize;
//get device path
resultb = myUSB.CT_SetupDiGetDeviceInterfaceDetail(ref requiredSize, size);
//is this the device i want?
string deviceID = this.VID;
if (myUSB.DevicePathName.IndexOf(deviceID) > 0)
{
//create HID Device Handel
resultb = myUSB.CT_CreateFile(myUSB.DevicePathName);
// Check the serial Number
myUSB.CT_HidD_GetHIDSerialNumber(out string device_sn);
myUSB.CT_CloseFile();
if (device_sn != "")
{
devices.Add(device_sn);
}
numberOfDevices++;
}
device_count++;
}
myUSB.CT_SetupDiDestroyDeviceInfoList();
return(devices);
}
bool SearchDevice()
{
this.DevicePath = string.Empty;
myUSB.CT_HidGuid(); // Get the GUID of the HID device Class
myUSB.CT_SetupDiGetClassDevs(); // Get the device information set
bool?result = null;
bool resultb = false;
int device_count = 0;
int size = 0;
int requiredSize = 0;
// Reset the IsConnected to false
this.IsConnected = false;
//search the device until you have found it or no more devices in list
while (!result.HasValue || result.Value == true)
{
//
//if (result == false)
// break;
//open the device
result = myUSB.CT_SetupDiEnumDeviceInterfaces(device_count);
//get size of device path
resultb = myUSB.CT_SetupDiGetDeviceInterfaceBuffer(ref requiredSize, 0);
size = requiredSize;
//get device path
resultb = myUSB.CT_SetupDiGetDeviceInterfaceDetail(ref requiredSize, size);
if (resultb == false)
{
int err = Marshal.GetLastWin32Error();
}
this.DevicePath = myUSB.DevicePathName;
//is this the device i want?
string deviceID = this.VID + "&" + this.PID;
if (this.DevicePath.ToLower().IndexOf(deviceID.ToLower()) > 0)
{
//create HID Device Handel
resultb = myUSB.CT_CreateFile(this.DevicePath);
// Check the serial Number
myUSB.CT_HidD_GetHIDSerialNumber(out string device_sn);
if (this.SerialNumber == null || this.SerialNumber == string.Empty || device_sn == this.SerialNumber)
{
IntPtr myPtrToPreparsedData = default(IntPtr);
if (myUSB.CT_HidD_GetPreparsedData(myUSB.hHidFile, ref myPtrToPreparsedData))
{
bool code = myUSB.CT_HidP_GetCaps(myPtrToPreparsedData);
int reportLength = myUSB.myHIDP_CAPS.InputReportByteLength;
//we have found our device so stop searching
this.IsConnected = true;
this.SerialNumber = device_sn;
}
break;
}
else
{
myUSB.CT_CloseFile();
}
}
device_count++;
}
myUSB.CT_SetupDiDestroyDeviceInfoList();
//return state
return(this.IsConnected);
}
