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kernel driver problem for program using libusb

Altera_Forum
Honored Contributor II
‎02-28-2010 07:16 AM
1,079 Views

Hello everyone, 

 

this is one part of my pc coding which use libusb-win32. 

 

for (bus = usb_get_busses(); bus; bus = bus->next) 

{ 

for (dev = bus->devices; dev; dev = dev->next) 

{ 

if (dev->descriptor.idvendor == 0x0471) 

{ 

udev = usb_open(dev); 

printf ("success opening!\n");} 

else 

printf("can't open descriptor.idvendor == 0x0471\n"); 

} 

} 

 

the 0x0471 is define in my firmware coding:DeviceDescriptor[4]=0x0471; 

For my pc coding, it can't open dev->descriptor.idvendor == 0x0471; 

what shall i do to make it success openning 0x0471？ Does i need include the related defined device descriptor in my firmware coding to my pc coding? 

 

your help will be very much appreciated!! 

 

Thanks and regards, 

Summer
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