Add hidraw backend for FreeBSD by aokblast · Pull Request #730 · libusb/hidapi

aokblast · 2025-03-27T09:16:51Z

FreeBSD support hidraw in Kernel from 13.0.
By using libusb only, we can only see the HID device from usb. To address this, we implement hidraw backend for FreeBSD.

Just like Linux use libudev to handle usb specified HID stuff (like Manufacture), we use libusb to handle it.

Sponsored-by: FreeBSD Foundation

aokblast · 2025-03-27T09:19:11Z

Currently, some stuff like the Report Descriptor parser and error registry routine are copied from Linux and I think they are platform independent. Can we create a common directory or hidraw directory in code then put them inside?

Have tested by the hidtest program.

Youw

No more comments

aokblast · 2025-03-27T14:17:41Z

Thanks for @Youw your review:).

Then, What is your opinion about this?

Currently, some stuff like the Report Descriptor parser and error registry routine are copied from Linux and I think they are platform independent. Can we create a common directory or hidraw directory in code then put them inside?

Have tested by the hidtest program.

Youw · 2025-03-27T14:33:01Z

Thanks for @Youw your review:).

Then, What is your opinion about this?

Currently, some stuff like the Report Descriptor parser and error registry routine are copied from Linux and I think they are platform independent. Can we create a common directory or hidraw directory in code then put them inside?
Have tested by the hidtest program.

I thinjk that is a good idea, but I don't think it really is nesessary to do so in scope of this PR.
There are really lots of stuff which I'd like to share among beckends, and I think it is going to be some refactoring after all.

mcuee · 2025-03-28T01:50:28Z

Nice. This will address the following issue.

FreeBSD hidraw backend to replace libusb backend #543

aokblast · 2025-03-28T02:10:47Z

Oops. I forget we have udev-devd stuff. Maybe we should use udev also?

Youw · 2025-03-28T10:27:32Z

Oops. I forget we have udev-devd stuff. Maybe we should use udev also?

I lost context here. What for? Seem like you have all the functionality implemented already. Aren't you?

aokblast · 2025-03-29T07:55:43Z

Oops. I forget we have udev-devd stuff. Maybe we should use udev also?

I lost context here. What for? Seem like you have all the functionality implemented already. Aren't you?

Yes, all functionality is fully implemented. I am just thinking if we should use libudev make hidapi more portable.

mcuee · 2025-03-30T02:00:25Z

First test under FreeBSD 14.1 Release, under a physical machine (Chuwi mini PC, Intel J4125 CPU, 8GB RAM, 256GB SSD)

There are a few compiler warnings.

mcuee@freebsd14:~/build/hidapi_pr730 $ uname -a
FreeBSD freebsd14 14.1-RELEASE FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC amd64

mcuee@freebsd14:~/build/hidapi_pr730 $ cc -v
FreeBSD clang version 18.1.5 (https://github.com/llvm/llvm-project.git llvmorg-18.1.5-0-g617a15a9eac9)
Target: x86_64-unknown-freebsd14.1
Thread model: posix
InstalledDir: /usr/bin

mcuee@freebsd14:~/build/hidapi_pr730 $ make
make  all-recursive
Making all in freebsd
  CC       hid.lo
hid.c:396:24: warning: passing 'uint8_t[255]' (aka 'unsigned char[255]') to parameter of type 'const char *' converts between pointers to integer types where one is of the unique plain 'char' type and the other is not [-Wpointer-sign]
  396 |                 mbstowcs(namebuffer, buffer, sizeof(namebuffer));
      |                                      ^~~~~~
/usr/include/stdlib.h:107:64: note: passing argument to parameter here
  107 | size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
      |                                                                 ^
hid.c:603:1: warning: non-void function does not return a value [-Wreturn-type]
  603 | }
      | ^
hid.c:937:7: warning: passing 'const char *' to parameter of type 'void *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
  937 |         free(dev->device_path);
      |              ^~~~~~~~~~~~~~~~
/usr/include/stdlib.h:101:18: note: passing argument to parameter here
  101 | void     free(void *);
      |                     ^
3 warnings generated.
  CCLD     libhidapi-hidraw.la
Making all in libusb
  CC       hid.lo
  CCLD     libhidapi-libusb.la
Making all in hidtest
  CC       test.o
  CCLD     hidtest-libusb
  CCLD     hidtest-hidraw

aokblast · 2025-03-30T02:06:02Z

Fix it:). Forget to fix the warning.

mcuee · 2025-03-30T02:06:06Z

Somehow hidtest-hidraw will seg fault with the Microchip Simple HID example.

mcuee@freebsd14:~/build/hidapi_pr730 $ sudo ./hidtest/hidtest-hidraw
hidapi test/example tool. Compiled with hidapi version 0.15.0, runtime version 0.15.0.
Compile-time version matches runtime version of hidapi.

Segmentation fault
mcuee@freebsd14:~/build/hidapi_pr730 $ sudo ./hidtest/hidtest-libusb
hidapi test/example tool. Compiled with hidapi version 0.15.0, runtime version 0.15.0.
Compile-time version matches runtime version of hidapi.

Device Found
  type: 04f2 0760
  path: 0-3:1.0
  serial_number: (null)
  Manufacturer: Chicony
  Product:      USB Keyboard
  Release:      100
  Interface:    0
  Usage (page): 0x0 (0x0)
  Bus type: 1 (USB)

  Report Descriptor: (65 bytes)
0x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x05, 0x07, 0x19, 0xe0, 
0x29, 0xe7, 0x15, 0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 
0x81, 0x02, 0x95, 0x01, 0x75, 0x08, 0x81, 0x01, 0x95, 0x03, 
0x75, 0x01, 0x05, 0x08, 0x19, 0x01, 0x29, 0x03, 0x91, 0x02, 
0x95, 0x05, 0x75, 0x01, 0x91, 0x01, 0x95, 0x06, 0x75, 0x08, 
0x15, 0x00, 0x26, 0xff, 0x00, 0x05, 0x07, 0x19, 0x00, 0x2a, 
0xff, 0x00, 0x81, 0x00, 0xc0, 
Device Found
  type: 04f2 0760
  path: 0-3:1.1
  serial_number: (null)
  Manufacturer: Chicony
  Product:      USB Keyboard
  Release:      100
  Interface:    1
  Usage (page): 0x0 (0x0)
  Bus type: 1 (USB)

  Report Descriptor: (127 bytes)
0x06, 0x01, 0x00, 0x09, 0x80, 0xa1, 0x01, 0x85, 0x01, 0x19, 
0x81, 0x29, 0x83, 0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 
0x01, 0x81, 0x02, 0x95, 0x01, 0x75, 0x05, 0x81, 0x01, 0xc0, 
0x05, 0x0c, 0x09, 0x01, 0xa1, 0x01, 0x85, 0x03, 0x15, 0x00, 
0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x19, 0xb5, 0x29, 0xb8, 
0x09, 0xcd, 0x09, 0xe2, 0x09, 0xe9, 0x09, 0xea, 0x81, 0x02, 
0x0a, 0x83, 0x01, 0x0a, 0x8a, 0x01, 0x0a, 0x92, 0x01, 0x0a, 
0x94, 0x01, 0x0a, 0x21, 0x02, 0x1a, 0x23, 0x02, 0x2a, 0x25, 
0x02, 0x81, 0x02, 0x0a, 0x26, 0x02, 0x0a, 0x27, 0x02, 0x0a, 
0x2a, 0x02, 0x95, 0x03, 0x81, 0x02, 0x95, 0x05, 0x81, 0x01, 
0xc0, 0x06, 0x00, 0xff, 0x09, 0x01, 0xa1, 0x01, 0x85, 0x02, 
0x25, 0x01, 0x15, 0x00, 0x75, 0x01, 0x95, 0x08, 0x1a, 0xf1, 
0x00, 0x2a, 0xf8, 0x00, 0x81, 0x02, 0xc0, 
Device Found
  type: 1ea7 0064
  path: 0-4:1.0
  serial_number: (null)
  Manufacturer: (null)
  Product:      2.4G Mouse
  Release:      200
  Interface:    0
  Usage (page): 0x0 (0x0)
  Bus type: 1 (USB)

  Report Descriptor: (105 bytes)
0x06, 0xb5, 0xff, 0x09, 0x01, 0xa1, 0x01, 0x85, 0xb5, 0x09, 
0x02, 0x15, 0x00, 0x26, 0xff, 0x00, 0x75, 0x08, 0x95, 0x07, 
0x81, 0x02, 0x09, 0x02, 0x15, 0x00, 0x26, 0xff, 0x00, 0x75, 
0x08, 0x95, 0x07, 0x91, 0x02, 0xc0, 0x05, 0x01, 0x09, 0x02, 
0xa1, 0x01, 0x85, 0x02, 0x09, 0x01, 0xa1, 0x00, 0x05, 0x09, 
0x19, 0x01, 0x29, 0x08, 0x15, 0x00, 0x25, 0x01, 0x95, 0x08, 
0x75, 0x01, 0x81, 0x02, 0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 
0x16, 0x01, 0xf8, 0x26, 0xff, 0x07, 0x75, 0x0c, 0x95, 0x02, 
0x81, 0x06, 0x09, 0x38, 0x15, 0x81, 0x25, 0x7f, 0x75, 0x08, 
0x95, 0x01, 0x81, 0x06, 0x05, 0x0c, 0x0a, 0x38, 0x02, 0x95, 
0x01, 0x81, 0x06, 0xc0, 0xc0, 
Device Found
  type: 04d8 003f
  path: 0-2:1.0
  serial_number: (null)
  Manufacturer: Microchip Technology Inc.
  Product:      Simple HID Device Demo
  Release:      2
  Interface:    0
  Usage (page): 0x0 (0x0)
  Bus type: 1 (USB)

  Report Descriptor: (28 bytes)
0x06, 0x00, 0xff, 0x09, 0x01, 0xa1, 0x01, 0x19, 0x01, 0x29, 
0x40, 0x15, 0x01, 0x25, 0x40, 0x75, 0x08, 0x95, 0x40, 0x81, 
0x00, 0x19, 0x01, 0x29, 0x40, 0x91, 0x00, 0xc0, 
Manufacturer String: Microchip Technology Inc.
Product String: Simple HID Device Demo
Unable to read serial number string
Serial Number String: (0) 
  Report Descriptor: (28 bytes)
0x06, 0x00, 0xff, 0x09, 0x01, 0xa1, 0x01, 0x19, 0x01, 0x29, 
0x40, 0x15, 0x01, 0x25, 0x40, 0x75, 0x08, 0x95, 0x40, 0x81, 
0x00, 0x19, 0x01, 0x29, 0x40, 0x91, 0x00, 0xc0, 
Device Found
  type: 04d8 003f
  path: 0-2:1.0
  serial_number: (null)
  Manufacturer: Microchip Technology Inc.
  Product:      Simple HID Device Demo
  Release:      2
  Interface:    0
  Usage (page): 0x1 (0xff00)
  Bus type: 1 (USB)

Indexed String 1: Microchip Technology Inc.
Unable to send a feature report: hid_error is not implemented yet
Unable to get a feature report: hid_error is not implemented yet
waiting...
waiting...
waiting...
waiting...
waiting...
waiting...
waiting...
waiting...
waiting...
waiting...
read() timeout

mcuee · 2025-03-30T02:10:28Z

Fix it:). Forget to fix the warning.

Thanks. The compiler warnings are gone.

The Segfault issue is still there though.

cederom · 2026-04-19T17:31:23Z

@Youw
Just wondering if it is worth asking Github Copilot to review this PR.

Although some reluctance it seems to provide reasonable and constructive review at least there will be some hints :-)

aokblast · 2026-04-20T09:33:49Z

I don't see any huge change over behavior. The comments from AI are just missing boundary checks.

aokblast · 2026-04-23T10:26:31Z

Forcing the device to run in Full Speed mode and now this PR works.


mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo usbconfig

ugen0.1: <OHCI root HUB Apple> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA)

ugen0.2: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (80mA)



mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo lsusb

Bus /dev/usb Device /dev/ugen0.2: ID 0925:1234 Lakeview Research 

Bus /dev/usb Device /dev/ugen0.1: ID 0000:0000  



mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo lsusb -vvv -d 0925:1234



Bus /dev/usb Device /dev/ugen0.2: ID 0925:1234 Lakeview Research 

Device Descriptor:

  bLength                18

  bDescriptorType         1

  bcdUSB               1.10

  bDeviceClass            0 (Defined at Interface level)

  bDeviceSubClass         0 

  bDeviceProtocol         0 

  bMaxPacketSize0        64

  idVendor           0x0925 Lakeview Research

  idProduct          0x1234 

  bcdDevice            0.00

  iManufacturer           1 CYPRESS

  iProduct                2 EZ-USB FX2 HID USBHIDIO

  iSerial                 0 

  bNumConfigurations      1

  Configuration Descriptor:

    bLength                 9

    bDescriptorType         2

    wTotalLength           41

    bNumInterfaces          1

    bConfigurationValue     1

    iConfiguration          3 

    bmAttributes         0x80

      (Bus Powered)

    MaxPower               80mA

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        0

      bAlternateSetting       0

      bNumEndpoints           2

      bInterfaceClass         3 Human Interface Device

      bInterfaceSubClass      0 No Subclass

      bInterfaceProtocol      0 None

      iInterface              0 

        HID Device Descriptor:

          bLength                 9

          bDescriptorType        33

          bcdHID               1.10

          bCountryCode            0 Not supported

          bNumDescriptors         1

          bDescriptorType        34 Report

          wDescriptorLength      52

          Report Descriptor: (length is 52)

            Item(Global): Usage Page, data= [ 0xa0 0xff ] 65440

                            (null)

            Item(Local ): Usage, data= [ 0x01 ] 1

                            (null)

            Item(Main  ): Collection, data= [ 0x01 ] 1

                            Application

            Item(Local ): Usage, data= [ 0x02 ] 2

                            (null)

            Item(Main  ): Collection, data= [ 0x00 ] 0

                            Physical

            Item(Global): Usage Page, data= [ 0xa1 0xff ] 65441

                            (null)

            Item(Local ): Usage, data= [ 0x03 ] 3

                            (null)

            Item(Local ): Usage, data= [ 0x04 ] 4

                            (null)

            Item(Global): Logical Minimum, data= [ 0x80 ] 128

            Item(Global): Logical Maximum, data= [ 0x7f ] 127

            Item(Global): Physical Minimum, data= [ 0x00 ] 0

            Item(Global): Physical Maximum, data= [ 0xff ] 255

            Item(Global): Report Size, data= [ 0x08 ] 8

            Item(Global): Report Count, data= [ 0x80 ] 128

            Item(Main  ): Input, data= [ 0x02 ] 2

                            Data Variable Absolute No_Wrap Linear

                            Preferred_State No_Null_Position Non_Volatile Bitfield

            Item(Local ): Usage, data= [ 0x05 ] 5

                            (null)

            Item(Local ): Usage, data= [ 0x06 ] 6

                            (null)

            Item(Global): Logical Minimum, data= [ 0x80 ] 128

            Item(Global): Logical Maximum, data= [ 0x7f ] 127

            Item(Global): Physical Minimum, data= [ 0x00 ] 0

            Item(Global): Physical Maximum, data= [ 0xff ] 255

            Item(Global): Report Size, data= [ 0x08 ] 8

            Item(Global): Report Count, data= [ 0x80 ] 128

            Item(Main  ): Output, data= [ 0x02 ] 2

                            Data Variable Absolute No_Wrap Linear

                            Preferred_State No_Null_Position Non_Volatile Bitfield

            Item(Main  ): End Collection, data=none

            Item(Main  ): End Collection, data=none

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x81  EP 1 IN

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0040  1x 64 bytes

        bInterval               5

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x01  EP 1 OUT

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0040  1x 64 bytes

        bInterval               5

Device Status:     0x0002

  (Bus Powered)

  Remote Wakeup Enabled



mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo ./hidapitester_freebsd_libusb_pr730 --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input

Opening device, vid/pid: 0x0925/0x1234

Writing output report of 129-bytes...wrote 129 bytes:

 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F

 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F

 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F

 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F

 80

Reading up to 129-byte input report, 250 msec timeout...read 64 bytes:

 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20

 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40

 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 00

Closing device

mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo ./hidapitester_freebsd_hidraw_pr730 --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input

Opening device, vid/pid: 0x0925/0x1234

Writing output report of 129-bytes...wrote 129 bytes:

 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F

 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F

 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F

 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F

 80

Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:

 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20

 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40

 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60

 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80

 00

Closing device

Hi. I just take a look at this again. Could you please try to make your payload 128bytes?

mcuee · 2026-04-24T10:32:09Z

Hi. I just take a look at this again. Could you please try to make your payload 128bytes?

@aokblast

Yes, I will try to carry out some tests over the weekend and report the results from FreeBSD 15.0 release.

mcuee · 2026-04-25T04:16:31Z

Here are the latest test results under FreeBSD 15.0 release.

mcuee@freebsdvm:~/build/hidapitester $ gmake -f Makefile_pr730 clean
rm -f ../hidapi_pr730/freebsd/hid.o hidapitester.o
rm -f hidapitester
mcuee@freebsdvm:~/build/hidapitester $ gmake -f Makefile_pr730
cc -I/usr/local/include -I ../hidapi_pr730/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi_pr730/freebsd/hid.c -o ../hidapi_pr730/freebsd/hid.o
cc -I/usr/local/include -I ../hidapi_pr730/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi_pr730/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi_pr730/freebsd/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread
mcuee@freebsdvm:~/build/hidapitester $ cp ./hidapitester ./hidapitester_pr730_hidraw

mcuee@freebsdvm:~/build/hidapitester $ diff -u Makefile_pr730 Makefile_pr730_libusb
--- Makefile_pr730      2026-04-25 11:50:25.193243000 +0800
+++ Makefile_pr730_libusb       2026-04-25 12:09:01.784542000 +0800
@@ -80,11 +80,11 @@

 endif

-########### FreeBSD (hidraw)
+########### FreeBSD (libusb)
 ifeq "$(OS)" "freebsd"

 CFLAGS += -I/usr/local/include
-OBJS = $(HIDAPI_DIR)/freebsd/hid.o
+OBJS = $(HIDAPI_DIR)/libusb/hid.o
 LIBS += -L/usr/local/lib -lusb -liconv -pthread
 EXE=

mcuee@freebsdvm:~/build/hidapitester $ gmake -f Makefile_pr730_libusb clean
rm -f ../hidapi_pr730/libusb/hid.o hidapitester.o
rm -f hidapitester
mcuee@freebsdvm:~/build/hidapitester $ gmake -f Makefile_pr730_libusb
cc -I/usr/local/include -I ../hidapi_pr730/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi_pr730/libusb/hid.c -o ../hidapi_pr730/libusb/hid.o
cc -I/usr/local/include -I ../hidapi_pr730/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi_pr730/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi_pr730/libusb/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread
mcuee@freebsdvm:~/build/hidapitester $ cp hidapitester hidapitester_pr730_libusb

mcuee@freebsdvm:~/build/hidapitester $ uname -a
FreeBSD freebsdvm 15.0-RELEASE-p4 FreeBSD 15.0-RELEASE-p4 releng/15.0-n281010-8ef0ed690df2 GENERIC amd64

mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo sysctl hw.usb.usbhid.enable=1
Password:
hw.usb.usbhid.enable: 0 -> 1

mcuee@freebsd15vboxvm:~/build/hidapitester $ sudo kldunload uhid

mcuee@freebsdvm:~/build/hidapitester $ sudo kldload hidraw

mcuee@freebsdvm:~/build/hidapitester $ ls -la /dev/hidraw0
crw-------  1 root operator 0x66 Apr 25 11:52 /dev/hidraw0

mcuee@freebsdvm:~/build/hidapitester $ sudo chmod 666 /dev/hidraw0

mcuee@freebsdvm:~/build/hidapitester $ ./hidapitester_pr730_hidraw --list
0925/1234: (null) - CYPRESS EZ-USB FX2 HID USBHIDIO
mcuee@freebsdvm:~/build/hidapitester $ ./hidapitester_pr730_hidraw --vidpid 0925:1234 --list
0925/1234: (null) - CYPRESS EZ-USB FX2 HID USBHIDIO
mcuee@freebsdvm:~/build/hidapitester $ ./hidapitester_pr730_hidraw --vidpid 0925:1234 --list-detail
0925/1234: (null) - CYPRESS EZ-USB FX2 HID USBHIDIO
  vendorId:      0x0925
  productId:     0x1234
  usagePage:     0xFFA0
  usage:         0x0001
  serial_number: (null)
  interface:     0
  path: /dev/hidraw0

mcuee@freebsdvm:~/build/hidapitester $ sudo usbconfig
ugen1.1: <EHCI root HUB Intel> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
ugen0.1: <OHCI root HUB Apple> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA)
ugen1.2: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (80mA)

mcuee@freebsdvm:~/build/hidapitester $ sudo lsusb -vvv -d 0925:1234

Bus /dev/usb Device /dev/ugen1.2: ID 0925:1234 Lakeview Research
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0925 Lakeview Research
  idProduct          0x1234
  bcdDevice            0.00
  iManufacturer           1 CYPRESS
  iProduct                2 EZ-USB FX2 HID USBHIDIO
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          3
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               80mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
          Report Descriptor: (length is 52)
            Item(Global): Usage Page, data= [ 0xa0 0xff ] 65440
                            (null)
            Item(Local ): Usage, data= [ 0x01 ] 1
                            (null)
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Local ): Usage, data= [ 0x02 ] 2
                            (null)
            Item(Main  ): Collection, data= [ 0x00 ] 0
                            Physical
            Item(Global): Usage Page, data= [ 0xa1 0xff ] 65441
                            (null)
            Item(Local ): Usage, data= [ 0x03 ] 3
                            (null)
            Item(Local ): Usage, data= [ 0x04 ] 4
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x80 ] 128
            Item(Main  ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Local ): Usage, data= [ 0x05 ] 5
                            (null)
            Item(Local ): Usage, data= [ 0x06 ] 6
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x80 ] 128
            Item(Main  ): Output, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main  ): End Collection, data=none
            Item(Main  ): End Collection, data=none
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         4
  bNumConfigurations      1
can't get debug descriptor: Input/output error
Device Status:     0x0002
  (Bus Powered)
  Remote Wakeup Enabled

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_git_libusb --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,
9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58
,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,
106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 64 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr728_libusb --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,
8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,
58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,10
5,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_libusb --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,
8,9,10
58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,10
5,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 64 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ ./hidapitester_pr730_hidraw --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 0 bytes:
Closing device

mcuee · 2026-04-25T04:20:52Z

Summary of the above test for the EZ-USB FX2LP modified Generic HID example with 128 Bytes report size (high speed USB device).

libusb backend from git (same for PR Add hidraw backend for FreeBSD #730) will only be able to get 64 bytes Input Report. This is a known issue.

HID reports of more than 64 bytes and libusb backend #274

PR Properly determine libusb read size for large reports (Fixes #274) #728 fixed the above issue and it is able to read back 128 bytes Input Report

Properly determine libusb read size for large reports (Fixes #274) #728

Somehow FreeBSD hidraw backend does not work in this case.

mcuee · 2026-04-25T04:29:07Z

Sanity check under Windows, with latest hidapi git.

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

PS C:\work\libusb\hidapitester> .\hidapitester_git_libusb.exe --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 64 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00
Closing device

PS C:\work\libusb\hidapitester> .\hidapitester_pr728_libusb_new.exe --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

aokblast · 2026-04-25T08:31:37Z

Sanity check under Windows, with latest hidapi git.

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

PS C:\work\libusb\hidapitester> .\hidapitester_git_libusb.exe --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 64 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00
Closing device

PS C:\work\libusb\hidapitester> .\hidapitester_pr728_libusb_new.exe --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

Does output of payload less than 128 bytes work? FreeBSD check if the device can handle the report by checking the size in report descriptor. You report descriptor shows that we can only handle 128 bytes.

wulf7 · 2026-04-25T08:51:33Z

Does output of payload less than 128 bytes work? FreeBSD check if the device can handle the report by checking the size in report descriptor. You report descriptor shows that we can only handle 128 bytes.

usbhid allocates internal buffers based on report size. They are 128 bytes long in that case. 129 bytes wont fit them.

There is a difference between input and output unnumbered reports.
In Linux and hidraw after than leading byte of output unnumbered report is stripped so it becomes a 128 byte. But input reports still go AS IS.

mcuee · 2026-04-25T08:57:18Z

Does output of payload less than 128 bytes work? FreeBSD check if the device can handle the report by checking the size in report descriptor. You report descriptor shows that we can only handle 128 bytes.

This is under Linux.

Linux hidraw backend does not work if I send 64 bytes payload.
Linux libusb backend does work if I send 64 bytes payload.

mcuee  ~/build/cypress  16:48  cyusb_linux
QSocketNotifier: Can only be used with threads started with QThread

(cyusb_linux:26002): Gdk-CRITICAL **: 16:48:33.678: gdk_wayland_window_set_dbus_properties_libgtk_only: assertion 'GDK_IS_WAYLAND_WINDOW (window)' failed
Found Hex format file
Releasing FX2 CPU from reset

mcuee  …/hidapitester   main ?    v15.2.0  16:54  sudo ./hidapitester_git_hidraw --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

mcuee  …/hidapitester   main ?    v15.2.0  16:54  sudo ./hidapitester_git_hidraw --vidpid 0925:1234 --open --buflen 256 -l 65 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 65-bytes...wrote 65 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40
Reading up to 65-byte input report, 250 msec timeout...read 0 bytes:
Closing device

mcuee  …/hidapitester   main ?    v15.2.0  16:54  sudo ./hidapitester_git_libusb --vidpid 0925:1234 --open --buflen 256 -l 65 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 65-bytes...wrote 65 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40
Reading up to 65-byte input report, 250 msec timeout...read 64 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 00
Closing device

wulf7 · 2026-04-25T09:03:44Z

Ouch. It seems that input is really 128 bytes no 129.

mcuee · 2026-04-25T09:11:20Z

Ouch. It seems that input is really 128 bytes no 129.

That should be the correct one.

The report ID 00 for the output report is not really on the wire. It is more needed because of Windows native HID API.
The report ID 00 is also not on the wire.

wulf7 · 2026-04-25T09:34:52Z

Strange. I have just tested FreeBSD hidraw on MBP8,1 with USB touchpad. Touching of surface with all 10 fingers gave me 338bytes packets successfully received.

mcuee · 2026-04-25T09:50:24Z

Strange. I have just tested FreeBSD hidraw on MBP8,1 with USB touchpad. Touching of surface with all 10 fingers gave me 338bytes packets successfully received.

Good one. Do you have any High Speed USB HID device?

As I mentioned before, "forcing the device to run in Full Speed mode and now this PR works". So your device is most likely a Full Speed USB device.

Add hidraw backend for FreeBSD #730 (comment)

Latest version of VirtualBox does not seem to allow me to disable EHCI support so I can not carry out the test. I am not so sure if I still have working USB 1.1 Hub to try.

mcuee · 2026-04-25T09:53:13Z

On the other hand, High Speed USB HID device is probably rare. In that case, we may still want to merge this PR first and then debug the issue later.

Maybe it has nothing to do with this PR but rather the hidraw (usbhid driver) of FreeBSD.

wulf7 · 2026-04-25T11:27:57Z

Good one. Do you have any High Speed USB HID device?

It is Full Speed device.

wulf7 · 2026-04-25T11:32:32Z

Latest version of VirtualBox does not seem to allow me to disable EHCI support so I can not carry out the test. I am not so sure if I still have working USB 1.1 Hub to try.

man ehci tells us about hw.usb.ehci.no_hs loader tunable that disables High Speed.
Try to add hw.usb.ehci.no_hs="1" to /boot/loader.conf and reboot after than

mcuee · 2026-04-25T11:39:07Z

Going back to original FX2HID example from Jan Axelson, this PR still does not work.
http://janaxelson.com/hidpage.htm
http://janaxelson.com/files/fx2hid.zip
fx2hid.zip

No issues under Windows.

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:1234 --open --buflen 64 -l 3 --send-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 2 bytes:
 01 02 00
Closing device

No issues under FreeBSD with the libusb backend.

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_libusb --vidpid 0925:1234 --open --buflen 64 -l 3 --send-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 2 bytes:
 01 02 00
Closing device

This PR still does not work.

mcuee@freebsdvm:~/build/hidapitester $ sudo kldload hidraw

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --list
0925/1234: CYPRESS - CYPRESS EZ-USB FX2 HID USBHIDIO

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --vidpid 0925:1234 --open --buflen 64 -l 3 --send-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 0 bytes:
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --vidpid 0925:1234 --open --buflen 64 -l 2 --sen
d-output 1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 2-bytes...wrote 2 bytes:
 01 02
Reading up to 2-byte input report, 250 msec timeout...read 0 bytes:
Closing device

mcuee · 2026-04-25T11:39:57Z

Latest version of VirtualBox does not seem to allow me to disable EHCI support so I can not carry out the test. I am not so sure if I still have working USB 1.1 Hub to try.

man ehci tells us about hw.usb.ehci.no_hs loader tunable that disables High Speed. Try to add hw.usb.ehci.no_hs="1" to /boot/loader.conf and reboot after than

Thanks for the tip. I will try this soon.

mcuee · 2026-04-25T12:16:09Z

man ehci tells us about hw.usb.ehci.no_hs loader tunable that disables High Speed. Try to add hw.usb.ehci.no_hs="1" to /boot/loader.conf and reboot after than

Somehow this does not work. The device is still enumerated as a high speed USB device.

mcuee@freebsdvm:~/build/hidapitester $ sudo cat /boot/loader.conf
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
zfs_load="YES"
hw.usb.ehci.no_hs="1"

mcuee@freebsdvm:~/build/hidapitester $ sudo reboot
Connection to 127.0.0.1 closed by remote host.
Connection to 127.0.0.1 closed.

PS C:\work> ssh mcuee@127.0.0.1 -p 3224
(mcuee@127.0.0.1) Password for mcuee@freebsdvm:
Last login: Sat Apr 25 19:58:23 2026 from 10.0.2.2
FreeBSD 15.0-RELEASE-p4 (GENERIC) releng/15.0-n281010-8ef0ed690df2

Welcome to FreeBSD!
...
...

mcuee@freebsdvm:~ $ cd build/

mcuee@freebsdvm:~/build $ cd hidapitester/

mcuee@freebsdvm:~/build/hidapitester $ sudo kldload hidraw

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --list
0925/1234: CYPRESS - CYPRESS EZ-USB FX2 HID USBHIDIO

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_libusb --vidpid 0925:1234 --open --buflen 64 -l 3 --sen
d-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 2 bytes:
 01 02 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --vidpid 0925:1234 --open --buflen 64 -l 3 --sen
d-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 0 bytes:
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo usbconfig list
ugen1.1: <EHCI root HUB Intel> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
ugen0.1: <OHCI root HUB Apple> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA)
ugen1.2: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (80mA)

Bus /dev/usb Device /dev/ugen1.2: ID 0925:1234 Lakeview Research
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0925 Lakeview Research
  idProduct          0x1234
  bcdDevice            0.00
  iManufacturer           1 CYPRESS
  iProduct                2 EZ-USB FX2 HID USBHIDIO
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          3
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               80mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
          Report Descriptor: (length is 52)
            Item(Global): Usage Page, data= [ 0xa0 0xff ] 65440
                            (null)
            Item(Local ): Usage, data= [ 0x01 ] 1
                            (null)
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Local ): Usage, data= [ 0x02 ] 2
                            (null)
            Item(Main  ): Collection, data= [ 0x00 ] 0
                            Physical
            Item(Global): Usage Page, data= [ 0xa1 0xff ] 65441
                            (null)
            Item(Local ): Usage, data= [ 0x03 ] 3
                            (null)
            Item(Local ): Usage, data= [ 0x04 ] 4
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Main  ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Local ): Usage, data= [ 0x05 ] 5
                            (null)
            Item(Local ): Usage, data= [ 0x06 ] 6
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Main  ): Output, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main  ): End Collection, data=none
            Item(Main  ): End Collection, data=none
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         4
  bNumConfigurations      1
can't get debug descriptor: Input/output error
Device Status:     0x0002
  (Bus Powered)
  Remote Wakeup Enabled

Bus /dev/usb Device /dev/ugen0.1: ID 0000:0000
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x0000
  idProduct          0x0000
  bcdDevice            1.00
  iManufacturer           1 Apple
  iProduct                2 OHCI root HUB
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x40
      (Missing must-be-set bit!)
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval             255
Hub Descriptor:
  bLength              10
  bDescriptorType      41
  nNbrPorts            12
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
  bPwrOn2PwrGood        0 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00 0x00
  PortPwrCtrlMask    0x00 0x00
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0100 power
   Port 7: 0000.0100 power
   Port 8: 0000.0100 power
   Port 9: 0000.0100 power
   Port 10: 0000.0100 power
   Port 11: 0000.0100 power
   Port 12: 0000.0100 power
Device Status:     0x0001
  Self Powered

Bus /dev/usb Device /dev/ugen1.1: ID 0000:0000
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x0000
  idProduct          0x0000
  bcdDevice            1.00
  iManufacturer           1 Intel
  iProduct                2 EHCI root HUB
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x40
      (Missing must-be-set bit!)
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval             255
Hub Descriptor:
  bLength              10
  bDescriptorType      41
  nNbrPorts            12
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
    TT think time 8 FS bits
  bPwrOn2PwrGood      200 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00 0x00
  PortPwrCtrlMask    0x00 0x00
 Hub Port Status:
   Port 1: 0000.0501 highspeed power connect
   Port 2: 0000.0500 highspeed power
   Port 3: 0000.0500 highspeed power
   Port 4: 0000.0500 highspeed power
   Port 5: 0000.0500 highspeed power
   Port 6: 0000.0500 highspeed power
   Port 7: 0000.0500 highspeed power
   Port 8: 0000.0500 highspeed power
   Port 9: 0000.0500 highspeed power
   Port 10: 0000.0500 highspeed power
   Port 11: 0000.0500 highspeed power
   Port 12: 0000.0500 highspeed power
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0         0
  bNumConfigurations      0
can't get debug descriptor: Input/output error
Device Status:     0x0001
  Self Powered

mcuee · 2026-04-25T12:49:22Z

The following command seems to disable EHCI driver completely, but then somehow I cannot attach the FX2LP USB HID device. Only a generic Atmel STK600 can be attached.

mcuee@freebsdvm:~/build/hidapitester $ sudo cat /boot/loader.conf
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
zfs_load="YES"
hint.ehci.0.disabled="1"
hint.ehci.1.disabled="1"

mcuee@freebsdvm:~/build/hidapitester $ sudo reboot
Connection to 127.0.0.1 closed by remote host.
Connection to 127.0.0.1 closed.

PS C:\work> ssh mcuee@127.0.0.1 -p 3224
(mcuee@127.0.0.1) Password for mcuee@freebsdvm:
Last login: Sat Apr 25 20:26:59 2026 from 10.0.2.2
FreeBSD 15.0-RELEASE-p4 (GENERIC) releng/15.0-n281010-8ef0ed690df2

Welcome to FreeBSD!
...
...
mcuee@freebsdvm:~ $ sudo usbconfig list
ugen0.1: <OHCI root HUB Apple> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA)
ugen0.2: <STK600 development board Atmel Corp.> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (500mA)

mcuee@freebsdvm:~ $ sudo dmesg | grep usb
usbus0 on ohci0
usbus0: 12Mbps Full Speed USB v1.0
ugen0.1: <Apple OHCI root HUB> at usbus0
uhub0 on usbus0
uhub0: <Apple OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen0.2: <ATMEL STK600> at usbus0

mcuee · 2026-04-25T13:22:30Z

Okay, this seems to work.

PS C:\Program Files\Oracle\VirtualBox> .\VBoxManage modifyvm "freebsd" --usb-ohci on --usb-ehci off --usb-xhci off

Now it seems to work.

mcuee@freebsdvm:~/build/hidapitester $ sudo usbconfig list
ugen0.1: <OHCI root HUB Apple> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA)
ugen0.2: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (80mA)

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --vidpid 0925:1234 --open --buflen 64 -l 3 --send-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 2 bytes:
 01 02 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_libusb --vidpid 0925:1234 --open --buflen 64 -l 3 --sen
d-output 0,1,2  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 3-bytes...wrote 3 bytes:
 00 01 02
Reading up to 3-byte input report, 250 msec timeout...read 2 bytes:
 01 02 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo lsusb -d 0925:1234 -vvv

Bus /dev/usb Device /dev/ugen0.2: ID 0925:1234 Lakeview Research
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0925 Lakeview Research
  idProduct          0x1234
  bcdDevice            0.00
  iManufacturer           1 CYPRESS
  iProduct                2 EZ-USB FX2 HID USBHIDIO
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          3
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               80mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
          Report Descriptor: (length is 52)
            Item(Global): Usage Page, data= [ 0xa0 0xff ] 65440
                            (null)
            Item(Local ): Usage, data= [ 0x01 ] 1
                            (null)
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Local ): Usage, data= [ 0x02 ] 2
                            (null)
            Item(Main  ): Collection, data= [ 0x00 ] 0
                            Physical
            Item(Global): Usage Page, data= [ 0xa1 0xff ] 65441
                            (null)
            Item(Local ): Usage, data= [ 0x03 ] 3
                            (null)
            Item(Local ): Usage, data= [ 0x04 ] 4
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Main  ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Local ): Usage, data= [ 0x05 ] 5
                            (null)
            Item(Local ): Usage, data= [ 0x06 ] 6
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Main  ): Output, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main  ): End Collection, data=none
            Item(Main  ): End Collection, data=none
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
Device Status:     0x0002
  (Bus Powered)
  Remote Wakeup Enabled

mcuee · 2026-04-25T13:28:35Z

Going back to the device with HID Input/Output report size of 128 bytes.

It seems to this PR will work fine as well.

Good thing -- PR #728 also works fine.

mcuee@freebsdvm:~/build/hidapitester $ sudo usbconfig list
ugen0.1: <OHCI root HUB Apple> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA)
ugen0.2: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (80mA)
mcuee@freebsdvm:~/build/hidapitester $ sudo lsusb -d 0925:1234 -vvv

Bus /dev/usb Device /dev/ugen0.2: ID 0925:1234 Lakeview Research
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0925 Lakeview Research
  idProduct          0x1234
  bcdDevice            0.00
  iManufacturer           1 CYPRESS
  iProduct                2 EZ-USB FX2 HID USBHIDIO
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          3
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               80mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
          Report Descriptor: (length is 52)
            Item(Global): Usage Page, data= [ 0xa0 0xff ] 65440
                            (null)
            Item(Local ): Usage, data= [ 0x01 ] 1
                            (null)
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Local ): Usage, data= [ 0x02 ] 2
                            (null)
            Item(Main  ): Collection, data= [ 0x00 ] 0
                            Physical
            Item(Global): Usage Page, data= [ 0xa1 0xff ] 65441
                            (null)
            Item(Local ): Usage, data= [ 0x03 ] 3
                            (null)
            Item(Local ): Usage, data= [ 0x04 ] 4
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x80 ] 128
            Item(Main  ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Local ): Usage, data= [ 0x05 ] 5
                            (null)
            Item(Local ): Usage, data= [ 0x06 ] 6
                            (null)
            Item(Global): Logical Minimum, data= [ 0x80 ] 128
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Physical Minimum, data= [ 0x00 ] 0
            Item(Global): Physical Maximum, data= [ 0xff ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x80 ] 128
            Item(Main  ): Output, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main  ): End Collection, data=none
            Item(Main  ): End Collection, data=none
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               5
Device Status:     0x0002
  (Bus Powered)
  Remote Wakeup Enabled

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw --vidpid 0925:1234 --open --buflen 256 -l 129 --send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128  --read-input
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr728_libusb --vidpid 0925:1234 --open --buflen 256 -l 129 --
send-output 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,3
9,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,7
9,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,11
4,115
Opening device, vid/pid: 0x0925/0x1234
Writing output report of 129-bytes...wrote 129 bytes:
 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
 80
Reading up to 129-byte input report, 250 msec timeout...read 128 bytes:
 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60
 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80
 00
Closing device

mcuee · 2026-04-25T13:29:39Z

@aokblast @wulf7 and @cederom

So basically this PR works with Full Speed USB HID device, but somehow it does not work with High Speed USB HID device. It may not be an issue with this PR, but rather the hidraw driver issue under FreeBSD.

mcuee · 2026-04-25T13:31:46Z

@Youw

I am still in favour of merging this PR after your review. The reason is that High Speed USB HID devices are not that common. But you can decide.

wulf7 · 2026-04-25T14:08:13Z

It may not be an issue with this PR, but rather the hidraw driver issue under FreeBSD.

It is definitely FreeBSD usbhid issue or may be bad interaction between FreeBSD and VBox.

mcuee · 2026-04-25T14:23:25Z

It may not be an issue with this PR, but rather the hidraw driver issue under FreeBSD.

It is definitely FreeBSD usbhid issue or may be bad interaction between FreeBSD and VBox.

I will test with a physical machine tomorrow.

aokblast · 2026-04-25T14:40:02Z

@aokblast @wulf7 and @cederom

So basically this PR works with Full Speed USB HID device, but somehow it does not work with High Speed USB HID device. It may not be an issue with this PR, but rather the hidraw driver issue under FreeBSD.

I will do a quick reviw from the AI comment again and do rebasing tomorrow.

aokblast · 2026-04-25T14:40:45Z

Ouch. It seems that input is really 128 bytes no 129.

That should be the correct one.

The report ID 00 for the output report is not really on the wire. It is more needed because of Windows native HID API. The report ID 00 is also not on the wire.

Ah yes. Sorry for missing this.

Youw self-requested a review March 27, 2025 10:33

Youw added enhancement New feature or request bsd FreeBSD, NetBSD, OpenBSD, etc labels Mar 27, 2025