[sane-devel] usb_set_interface and usb_claim_interface

[Tamkang]

Hello,
 sorry that I was wrong about libusb function, the right one is usb_set_configuration(), I saw in sanei_usb the place of usb_set_configuration is before usb_claim_interface being used, but when I saw in sane-backend for 1.0.16 , the sm3600 was usb_claim_interface first after that is usb_set_configuration , so I follow that way, after that I don't exactly understand why, but for now is already works, I will going to change and to use sanei_usb.h .
 
 and I see the chip is SQ113
 <device descriptor of 0x05da/0x3021 at 001:009 (Prolific Technology Inc. USB Scanner               )>
 bLength               18
 bDescriptorType       1
 bcdUSB                2.00
 bDeviceClass          0
 bDeviceSubClass       0
 bDeviceProtocol       0
 bMaxPacketSize0       64
 idVendor              0x05DA
 idProduct             0x3021
 bcdDevice             1.00
 iManufacturer         1 (Prolific Technology Inc.)
 iProduct              2 (USB Scanner               )
 iSerialNumber         0 ()
 bNumConfigurations    1
  <configuration 0>
  bLength              9
  bDescriptorType      2
  wTotalLength         39
  bNumInterfaces       1
  bConfigurationValue  1
  iConfiguration       0 ()
  bmAttributes         192 (Self-powered)
  MaxPower             100 mA
   <interface 0>
    <altsetting 0>
    bLength            9
    bDescriptorType    4
    bInterfaceNumber   0
    bAlternateSetting  0
    bNumEndpoints      3
    bInterfaceClass    255
    bInterfaceSubClass 255
    bInterfaceProtocol 255
    iInterface         0 ()
     <endpoint 0>
     bLength           7
     bDescriptorType   5
     bEndpointAddress  0x01 (out 0x01)
     bmAttributes      2 (bulk)
     wMaxPacketSize    512
     bInterval         0 ms
     bRefresh          0
     bSynchAddress     0
     <endpoint 1>
     bLength           7
     bDescriptorType   5
     bEndpointAddress  0x82 (in 0x02)
     bmAttributes      2 (bulk)
     wMaxPacketSize    512
     bInterval         0 ms
     bRefresh          0
     bSynchAddress     0
     <endpoint 2>
     bLength           7
     bDescriptorType   5
     bEndpointAddress  0x83 (in 0x03)
     bmAttributes      3 (interrupt)
     wMaxPacketSize    1
     bInterval         3 ms
     bRefresh          0
     bSynchAddress     0
 
 <trying to find out which USB chip is used>
     checking for GT-6801 ...
     this is not a GT-6801 (bDeviceClass = 0)
     checking for GT-6816 ...
     this is not a GT-6816 (bcdUSB = 0x200)
     checking for GT-8911 ...
     this is not a GT-8911 (check 2, bcdUSB = 0x200)
     checking for MA-1017 ...
     this is not a MA-1017 (bDeviceClass = 0, bInterfaceClass = 255)
     checking for MA-1015 ...
     this is not a MA-1015 (bDeviceClass = 0)
     checking for MA-1509 ...
     this is not a MA-1509 (bDeviceClass = 0)
     checking for LM983[1,2,3] ...
     this is not a LM983x (bcdUSB = 0x200)
     checking for GL646 ...
     this is not a GL646 (bDeviceClass = 0, bInterfaceClass = 255)
     checking for GL646_HP ...
     this is not a GL646_HP (bDeviceClass = 0, bInterfaceClass = 255)
     checking for GL660+GL646 ...
     this is not a GL660+GL646 (bDeviceClass = 0, bInterfaceClass = 255)
     checking for GL841 ...
     this is not a GL841 (bDeviceClass = 0, bInterfaceClass = 255)
     checking for ICM532B ...
     this is not a ICM532B (check 1, bDeviceClass = 0, bInterfaceClass = 255)
     checking for PV8630/LM9830 ...
     this is not a PV8630/LM9830 (bcdUSB = 0x200)
     checking for M011 ...
     this is not a M011 (bDeviceClass = 0)
     checking for RTS8822L-01H ...
     this is not a RTS8822L-01H (bEndpointAddress = 0x1, bmAttributes = 0x2, wMaxPacketSize = 0x200, bInterval = 0x0)
     checking for rts8858c ...
     this is not a rts8858c (bcdUSB = 0x200)
     checking for SQ113 ...
 <This USB chip looks like a SQ113>
 
 found USB scanner (vendor=0x05da [Prolific Technology Inc.], product=0x3021 [USB Scanner               ], chip=SQ113) at libusb:001:009
 
 
 

		
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