// Opens a handle to the devTH device attached the HIDUSB.SYS driver
internal unsafe override bool Open(byte dev)
{
// If this object already has the driver open, close it.
if (_hDevice != CyConst.INVALID_HANDLE)
{
Close();
}
int Devices = DeviceCount;
if (Devices == 0)
{
return(false);
}
if (dev > (Devices - 1))
{
return(false);
}
string pathDetect;
_path = PInvoke.GetDevicePath(_drvGuid, dev);
pathDetect = _path;
if (pathDetect.Contains("&mi_00#") == true || pathDetect.Contains("hid#mshw0030&col01#") == true)
{
return(false);
}
_hDevice = PInvoke.GetDeviceHandle(_path, false, ref _Access);
if (_hDevice == CyConst.INVALID_HANDLE)
{
return(false);
}
_devNum = dev;
PInvoke.HidD_GetPreparsedData(_hDevice, ref PreParsedData);
PInvoke.HidD_GetAttributes(_hDevice, ref Attributes);
PInvoke.HidP_GetCaps(PreParsedData, ref _Capabilities);
_Inputs = new CyHidReport(HIDP_REPORT_TYPE.HidP_Input, _Capabilities, PreParsedData);
_Outputs = new CyHidReport(HIDP_REPORT_TYPE.HidP_Output, _Capabilities, PreParsedData);
_Features = new CyHidReport(HIDP_REPORT_TYPE.HidP_Feature, _Capabilities, PreParsedData);
PInvoke.HidD_FreePreparsedData(PreParsedData);
PreParsedData = null;
byte[] buffer = new byte[512];
fixed(byte *buf = buffer)
{
char *sChars = (char *)buf;
if (PInvoke.HidD_GetManufacturerString(_hDevice, buffer, 512))
{
_manufacturer = new string(sChars);
}
if (PInvoke.HidD_GetProductString(_hDevice, buffer, 512))
{
_product = new string(sChars);
}
if (PInvoke.HidD_GetSerialNumberString(_hDevice, buffer, 512))
{
_serialNumber = new string(sChars);
}
}
// Shortcut members.
_vendorID = Attributes.VendorID;
_productID = Attributes.ProductID;
_Version = Attributes.VersionNumber;
_Usage = _Capabilities.Usage;
_UsagePage = _Capabilities.UsagePage;
_driverName = "usbhid.sys";
return(true);
}
private string GetDevicePath(byte dev)
{
string dPath;
byte dCnt = 0;
//string s = "USBSTOR";
//byte[] sClass = new byte[s.Length+1];
//Encoding.ASCII.GetBytes(s,0,s.Length,sClass,0);
//dPath = PInvoke.GetDevicePath(Guid.Empty,0,sClass);
// First look for the devTH USBSTOR Disk
byte i = 0;
do
{
dPath = PInvoke.GetDevicePath(CyConst.DiskGuid, i);
if (dPath.IndexOf("\\usbstor#") > -1)
{
if (dev == dCnt)
{
_drvGuid = CyConst.DiskGuid;
return(dPath);
}
else
{
dCnt++;
}
}
i++;
}while (dPath.Length > 0);
// Next look for the devTH USBSTOR CD
i = 0;
do
{
dPath = PInvoke.GetDevicePath(CyConst.CdGuid, i);
if (dPath.IndexOf("\\usbstor#") > -1)
{
if (dev == dCnt)
{
_drvGuid = CyConst.CdGuid;
return(dPath);
}
else
{
dCnt++;
}
}
i++;
}while (dPath.Length > 0);
return("");
}