[libhid-discuss] usb_control_msg

[Jorgen Lundman]

Charles Lepple wrote:

> It depends what you want to accomplish - if you just want to make it 
> work, then feel free to dereference it. I can't guarantee that it will 
> stay that way forever, but I will try not to change it unnecessarily.
> 
> In an ideal world, the libhid functions would do everything you need 
> them to, but the HID devices people are trying to use with libhid are 
> way more diverse than we expected back when this project was started.
> 


That is fine for now. You are clearly not screaming in terror at using 
it that way so maybe it should work that way.

When just using libusb I can not even use usb_control_msg so it feels 
like there is some progress. But it seems it can not get the endpoints, 
and thusly can"t find 0x81.


   TRACE: hid_compare_usb_device(): comparing match specifications to 
USB device.
..
   TRACE: hid_compare_usb_device(): inspecting vendor ID...
   TRACE: hid_compare_usb_device(): match on vendor ID: 0x6993.
   TRACE: hid_compare_usb_device(): inspecting product ID...
   TRACE: hid_compare_usb_device(): match on product ID: 0xb001.
   TRACE: hid_compare_usb_device(): no custom matching function supplied.
  NOTICE: hid_find_usb_device(): found a matching USB device 
005/006-6993-b001-00-00[0].
   TRACE: hid_force_open(): claiming USB device 005/006-6993-b001-00-00[0].
WARNING: hid_os_force_claim(): code not tested on the Darwin platform!
   TRACE: hid_os_force_claim(): claiming USB device 
005/006-6993-b001-00-00[0]...
usb_claim_interface: called for interface 0
Interface 0 of device is 0x00001c73
claim_interface: Interface 0 of device from QueryInterface is 0x3033f0
libusb/darwin.c get_endpoints: building table of endpoints.
libusb/darwin.c get_endpoints: complete.
  NOTICE: hid_force_open(): successfully claimed USB device 
005/006-6993-b001-00-
00[0].
   TRACE: hid_init_parser(): initialising the HID parser for USB Device 
005/006-6993-b001-00-00[0]...



usb_control_msg: 33 9 512 3 0xbffff8ec 16 1600
hid_set_output_report failed with return code 16
   TRACE: hid_interrupt_read(): retrieving interrupt report from device 
005/006-6
993-b001-00-00[0] ...
libusb/darwin.c get_endpoints: building table of endpoints.
libusb/darwin.c get_endpoints: complete.
endponts 0, num 0
libusb/darwin.c ep_to_pipeRef: Converting ep address to pipeRef.
libusb/darwin.c ep_to_pipeRef:: No pipeRef found with endpoint address 0x81.
USB error: libusb/darwin.c usb_bulk_transfer: Invalid pipe reference
USB error: usb_bulk_read: An error occured during read (see messages above)
WARNING: hid_interrupt_read(): failed to get interrupt read from device 
005/006-
6993-b001-00-00[0]: usb_bulk_read: An error occured during read (see 
messages ab
ove)
hid_interrupt_read() => 21:libhid: interrupt read failed


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