void DVS128Interface::startReading(){
CUsbIo dev;
USB_DEVICE_DESCRIPTOR devDesc;
DWORD status;
bool found = false;
devList = CUsbIo::CreateDeviceList(&usbIoID);
if (devList == NULL){
printf("Unable to build a device list!\n");
}
// Open and query usb devices to find the right one
for (int i = 0; i < 127; i++){
status = dev.Open(i,devList,&usbIoID);
if ( status != USBIO_ERR_SUCCESS ) {
if ( status != USBIO_ERR_NO_SUCH_DEVICE_INSTANCE ){
fprintf(stdout,"UsbDev.Open returned with error 0x%08X\n",status);
}
break;
}
// Query device descriptor for comparison with PID and VID
status = dev.GetDeviceDescriptor(&devDesc);
if ( status == USBIO_ERR_SUCCESS ){
found = true;
if ( devDesc.iSerialNumber!=0 ){
dev.Close();
if (devDesc.idVendor == VID && devDesc.idProduct == PID){
fprintf(stdout,"Device found, starting reader.\n");
devIndex = i;
startReaderThread(devIndex);
break;
} else {
fprintf(stdout,"Device not recognized\n");
}
} else {
fprintf(stdout,"Querying device descriptor failed, status:0x%08X\n",status);
dev.Close();
}
}
if ( !found ) {
fprintf(stdout,"There are no USB devices attached to the USBIO driver.\n");
}
else
fprintf(stdout,"Device found...");
CUsbIo::DestroyDeviceList(devList);
}
}
void DVS128Interface::sendVendorRequest(UCHAR req, const char *buf, DWORD bufSize){
CUsbIo dev;
DWORD status;
// open the device
if(!dev.IsOpen()){
status = dev.Open(devIndex,devList,&usbIoID);
if ( status != USBIO_ERR_SUCCESS ) {
printf("Could not open device: %x",status);
return;
}
}
printf("Sending Vendor Request: %x\n", req);
USBIO_CLASS_OR_VENDOR_REQUEST request;
ZeroMemory(&request,sizeof(request));
request.Flags = 0;
request.Type = RequestTypeVendor;
request.Recipient = RecipientDevice;
request.RequestTypeReservedBits = 0;
request.Request = req;
request.Value = 4;
request.Index = 0;
status = dev.ClassOrVendorOutRequest(
buf,
bufSize,
&request
);
printf("Status: %x\n",status);
dev.Close();
}
static void CloseUsbDevice()
{
// Close the device
g_UsbDev.Close();
PRINT_IF_VERBOSE("CUsbIo::Close called\n");
}
