i'm trying to integrate Metrologic Fusion MS3780 USB barcode
reader to
our system, and trying to make ugen IOCTL reads with
USB_DO_REQUEST
since i want the timeouts to work. i can read the data with
read() calls
but
it blocks.
is there a device does these kind of IOCTL reads so i can
setup
up the 'struct usb_ctl_request' correctly ??
// ioctl( fd, USB_DO_REQUEST, ( struct usb_ctl_request *)
...);
i have been getting errno: 22 which is "EINVAL: Invalid
Argument"
with my structure setups.
here is the dmesg,
ugen0: Metrologic Metrologic Scanner, rev 1.10/1.00, addr 2
here is the USB info for the device,
/**********************************/
usb device, idVendor: 0x0c2e, idProduct: 0x0720
Only Device Descriptor
bLength: 18, bDescriptorType: 1, bcdUSB:
0x0110,
bDeviceClass: 0, bDeviceSubClass: 0,
bDeviceProtocol: 0,
bMaxPacketSize0: 8, idVendor: 0x0c2e,
idProduct: 0x0720,
bcdDevice: 0x0100, iManufacture: 1,
iProduct: 2,
iSerialNumber: 0, bNumConfigurations: 1
Configuration(0) Descriptor
bLength: 9, bDescriptorType: 2,
wTotalLength: 41,
bNumInterfaces: 1, bConfigurationValue: 1,
iConfiguration: 3,
bmAttributes: 0x80, MaxPower: 150, extra:
(null),
extralen: 0
Bus Powered device configuration
Configuration(0)--Interaface(0) Descriptor
bLength: 9, bDescriptorType: 4,
bInterfaceNumber: 0,
bAlternateSetting: 0, bNumEndpoints: 2,
bInterfaceClass:
255,
bInterfaceSubClass: 0, bInterfaceProtocol:
0,
iInterface: 0,
extra: !^Q^A, extralen: 9
Configuration(0)--Interaface(0)--End Point(0) Descriptor
bLength: 7, bDescriptorType: 5,
bEndpointAddress: 0x02,
bmAttributes: 0x03, wMaxPacketSize: 8,
bInterval: 10,
bRefresh: 0, bSynchAddress: 0
Endpoint(2): INTERRUPT-OUT
Configuration(0)--Interaface(0)--End Point(1) Descriptor
bLength: 7, bDescriptorType: 5,
bEndpointAddress: 0x81,
bmAttributes: 0x03, wMaxPacketSize: 8,
bInterval: 10,
bRefresh: 0, bSynchAddress: 0
Endpoint(1): INTERRUPT-IN
/**********************************/
thanks .. halit ..
--
Halit Canbazoglu | Senior Engineer
510-621-2196(work) | 510-621-2020(fax)
halit vicor.com | VICOR, a Metavante Company
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