Lego NXT brick communication error with libusb

[Rene Ladan]

Op 13-12-2010 11:51, Hans Petter Selasky schreef:
> On Sunday 12 December 2010 23:40:54 Rene Ladan wrote:
>> Hi,
>>
>> I am writing a port [1] to control the Lego NXT brick with ROS, but when
>> I run a test program it fails (permissions for the USB device are 666).
>> This is on:
>>
> 
> What dmesg is shown? Are other [kernel] drivers hooking into the USB 
> interfaces used by your user-land driver?
> 
dmesg shows just:
ugen3.2: <vendor 0x0694> at usbus3
Vendor 0x0694 is Lego.

I don't have other drivers hooking into the USB device I think:
% kldstat -v | grep usb
		276 usbus/uhub
		275 uhub/usb_linux
		273 uss820/usbus
		272 musbotg/usbus
		271 at91_udp/usbus
		270 xhci/usbus
		269 ehci/usbus
		268 uhci/usbus
		267 ohci/usbus

> What is output from usbconfig -d X.Y dump_device_desc dump_curr_config_desc
> 
Attached.

Rene
-- 
http://www.rene-ladan.nl/

GPG fingerprint = ADBC ECCD EB5F A6B4 549F  600D 8C9E 647A E564 2BFC
(subkeys.pgp.net)
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ugen3.2: <product 0x0002 vendor 0x0694> at usbus3, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x0000 
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0008 
  idVendor = 0x0694 
  idProduct = 0x0002 
  bcdDevice = 0x0000 
  iManufacturer = 0x0000  <no string>
  iProduct = 0x0000  <no string>
  iSerialNumber = 0x0001  <0016530CA81C>
  bNumConfigurations = 0x0001 


 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x0020 
    bNumInterfaces = 0x0001 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x00c0 
    bMaxPower = 0x0000 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0001  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000