Thanks Andrew and Charles for the responses. @Andrew: At least now I know I'm not crazy :)
I'm working with a USB driver for a joystick that uses libhid. If I ever have to rewrite it, I will definitely go down the HIDAPI route.
Much appreciated! ~ Chris On 4/19/2015 9:18 PM, Andrew Silverman wrote:
My recollection is that this is already a known bug that was never officially patched, as evidently libhid has long since been considered obsolete in favor of newer HID libraries (http://www.signal11.us/oss/hidapi/). I have the same change in my own code that still works with the existing library. -----Original Message----- From: libhid-discuss [mailto:libhid-discuss-bounces+andrewsi=microsoft....@lists.alioth.debian.org] On Behalf Of [email protected] Sent: Sunday, April 19, 2015 7:15 PM To: [email protected] Subject: [libhid-discuss] LIBHID: Latest SVN Trunk: hid_opening.c: hid_compare_usb_device(): product_id matched incorrectly Hi: I ran into a situation with libhid where a USB product ID of 0x0501 was matching on a USB device with a product ID of 0x0503. I narrowed it down in hid_compare_usb_device() to the line below: ----- ((dev->descriptor.idProduct & match->product_id) == match->product_id) ----- Tracing the values of the above, both match and dev descriptor, the values were showing correct (0x0501, 0x0503), but still evaluating as matched. If I change the above code to just: ----- (dev->descriptor.idProduct == match->product_id) ----- Then the product ID's match correctly, and only 0x0501 matches 0x0501. Any ideas on why 0x0503 would match 0x0501 on the original code? Actual hex codes were set/used in the passed HIDInterfaceMatcher struct. As a side note, the vendor ID did not experience this problem. Latest SVN trunk (2015-04-19). Thanks. ~ Chris _______________________________________________ libhid-discuss mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/libhid-discuss http://libhid.alioth.debian.org/
_______________________________________________ libhid-discuss mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/libhid-discuss http://libhid.alioth.debian.org/
