//---#+************************************************************************
//---NOTATION:
//- bool searchDevice()
//-
//--- DESCRIPTION:
//-- tries to find the device with specified vendorID and productID
// Autor: F.L.
//-*************************************************************************+#*
/// <summary>
/// Searches the device with soecified vendor and product id an connect to it.
/// </summary>
/// <returns></returns>
private bool searchDevice()
{
//no device found yet
bool deviceFound = false;
this.deviceCount = 0;
this.devicePath = string.Empty;
myUSB.CT_HidGuid();
myUSB.CT_SetupDiGetClassDevs();
int result = -1;
int resultb = -1;
int device_count = 0;
int size = 0;
int requiredSize = 0;
//search the device until you have found it or no more devices in list
while (result != 0)
{
//open the device
result = myUSB.CT_SetupDiEnumDeviceInterfaces(device_count);
//get size of device path
resultb = myUSB.CT_SetupDiGetDeviceInterfaceDetail(ref requiredSize, 0);
size = requiredSize;
//get device path
resultb = myUSB.CT_SetupDiGetDeviceInterfaceDetailx(ref requiredSize, size);
//is this the device i want?
string deviceID = this.vendorID + "&" + this.productID;
if (myUSB.DevicePathName.IndexOf(deviceID) > 0)
{
//yes it is
//store device information
this.deviceCount = device_count;
this.devicePath = myUSB.DevicePathName;
deviceFound = true;
//init device
myUSB.CT_SetupDiEnumDeviceInterfaces(this.deviceCount);
size = 0;
requiredSize = 0;
resultb = myUSB.CT_SetupDiGetDeviceInterfaceDetail(ref requiredSize, size);
resultb = 0;
resultb = myUSB.CT_SetupDiGetDeviceInterfaceDetailx(ref requiredSize, size);
resultb = 0;
//create HID Device Handel
resultb = myUSB.CT_CreateFile(this.devicePath);
//we have found our device so stop searching
break;
}
device_count++;
}
//set connection state
this.setConnectionState(deviceFound);
//return state
return(this.getConnectionState());
}
