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.

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.

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 Sponsored-by: Framework Laptop. Inc

aokblast · 2026-04-26T08:47:45Z

I just rebase and clean up the commit. All AI's feedback is fixed.

mcuee · 2026-04-26T10:45:48Z

Preparing to test with a physical machine, an Chuwi mini PC with Intel J4125 CPU.

mcuee@freebsd14:~/build/hidapitester $ uname -a
FreeBSD freebsd14 15.0-RELEASE-p2 FreeBSD 15.0-RELEASE-p2 GENERIC amd64

mcuee@freebsd14:~/build/hidapitester $ fxload -v -D vid=0x04b4,pid=0x8613 -t fx2lp -I ../fx2hid/fx2hid/fx2hid.hex
microcontroller type: fx2lp
single stage:  load on-chip memory
open RAM hexfile image ../fx2hid/fx2hid/fx2hid.hex
stop CPU
write on-chip, addr 0x0600 len  234 (0x00ea)
write on-chip, addr 0x09d1 len   10 (0x000a)
write on-chip, addr 0x0380 len  428 (0x01ac)
write on-chip, addr 0x0080 len  768 (0x0300)
write on-chip, addr 0x0033 len    3 (0x0003)
write on-chip, addr 0x09eb len    4 (0x0004)
write on-chip, addr 0x08b6 len   44 (0x002c)
write on-chip, addr 0x0931 len   20 (0x0014)
write on-chip, addr 0x0887 len   47 (0x002f)
write on-chip, addr 0x05b8 len   70 (0x0046)
write on-chip, addr 0x0945 len   17 (0x0011)
write on-chip, addr 0x0043 len    3 (0x0003)
write on-chip, addr 0x0053 len    3 (0x0003)
write on-chip, addr 0x0700 len  184 (0x00b8)
write on-chip, addr 0x09ef len    3 (0x0003)
write on-chip, addr 0x07b8 len   92 (0x005c)
write on-chip, addr 0x090a len   39 (0x0027)
write on-chip, addr 0x05fe len    2 (0x0002)
write on-chip, addr 0x09f3 len    4 (0x0004)
write on-chip, addr 0x09db len    8 (0x0008)
write on-chip, addr 0x099c len   18 (0x0012)
write on-chip, addr 0x09e3 len    8 (0x0008)
write on-chip, addr 0x09ae len   18 (0x0012)
write on-chip, addr 0x09f7 len    6 (0x0006)
write on-chip, addr 0x08e2 len   40 (0x0028)
write on-chip, addr 0x0956 len   24 (0x0018)
write on-chip, addr 0x06ea len   22 (0x0016)
write on-chip, addr 0x0986 len   22 (0x0016)
write on-chip, addr 0x0851 len   54 (0x0036)
write on-chip, addr 0x096e len   24 (0x0018)
write on-chip, addr 0x0814 len   61 (0x003d)
write on-chip, addr 0x09fd len   36 (0x0024)
write on-chip, addr 0x0000 len    3 (0x0003)
write on-chip, addr 0x052c len   12 (0x000c)
write on-chip, addr 0x09c0 len   17 (0x0011)
write on-chip, addr 0x0538 len  128 (0x0080)
write on-chip, addr 0x09f2 len    1 (0x0001)
... WROTE: 2477 bytes, 37 segments, avg 66
reset CPU

mcuee@freebsd14:~/build/hidapitester $ sudo lsusb
Bus /dev/usb Device /dev/ugen0.6: ID 0925:1234 Lakeview Research 
Bus /dev/usb Device /dev/ugen0.10: ID 05e3:0747 Genesys Logic, Inc. 
Bus /dev/usb Device /dev/ugen0.9: ID 0bda:8156 Realtek Semiconductor Corp. 
Bus /dev/usb Device /dev/ugen0.8: ID 05e3:0625 Genesys Logic, Inc. 
Bus /dev/usb Device /dev/ugen0.7: ID 13d3:3503 IMC Networks 
Bus /dev/usb Device /dev/ugen0.5: ID 03eb:2106 Atmel Corp. STK600 development board
Bus /dev/usb Device /dev/ugen0.4: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus /dev/usb Device /dev/ugen0.3: ID 25a7:fa61 Areson Technology Corp Elecom Co., Ltd MR-K013 Multicard Reader
Bus /dev/usb Device /dev/ugen0.2: ID 1ea7:0064 SHARKOON Technologies GmbH 2.4GHz Wireless rechargeable vertical mouse [More&Better]
Bus /dev/usb Device /dev/ugen0.1: ID 0000:0000  

mcuee@freebsd14:~/build/hidapitester $ sudo kldunload uhid
kldunload: can't find file uhid

mcuee@freebsd14:~/build/hidapitester $ ls -la /dev/hidraw*
crw-------  1 root operator  0x65 Apr 26 17:15 /dev/hidraw0
crw-------  1 root operator  0x6d Apr 26 17:15 /dev/hidraw1
crw-------  1 root operator  0x6e Apr 26 17:15 /dev/hidraw2
crw-------  1 root operator 0x1ba Apr 26 18:24 /dev/hidraw3

mcuee@freebsd14:~/build/hidapitester $ gmake
cc -I/usr/local/include -I ../hidapi/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi/libusb/hid.c -o ../hidapi/libusb/hid.o
cc -I/usr/local/include -I ../hidapi/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi/libusb/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester --list
1EA7/0064: (null) - 2.4G Mouse
25A7/FA61: Compx - 2.4G Receiver
25A7/FA61: Compx - 2.4G Receiver
0925/1234: CYPRESS - EZ-USB FX2 HID USBHIDIO

mcuee@freebsd14:~/build/hidapitester $ sudo chmod 666 /dev/hidraw3

mcuee@freebsd14:~/build/hidapitester $ ./hidapitester_freebsd_hidraw_pr730  --list
0925/1234: (null) - CYPRESS EZ-USB FX2 HID USBHIDIO

mcuee@freebsd14:~/build/hidapitester $ ./hidapitester_freebsd_hidraw_pr730 --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/hidraw3

mcuee@freebsd14:~/build/hidapitester $ sudo usbconfig
ugen0.1: <XHCI root HUB Intel> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
ugen0.2: <2.4GHz Wireless rechargeable vertical mouse [More&Better] SHARKOON Technologies GmbH> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.3: <Elecom Co., Ltd MR-K013 Multicard Reader Areson Technology Corp> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.4: <Hub Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
ugen0.5: <STK600 development board Atmel Corp.> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (500mA)
ugen0.7: <product 0x3503 IMC Networks> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.8: <USB3.2 Hub Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
ugen0.9: <USB 10/100/1G/2.5G LAN Realtek Semiconductor Corp.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (64mA)
ugen0.10: <USB Storage Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (224mA)
ugen0.6: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (80mA)

mcuee@freebsd14:~/build/hidapitester $ sudo lsusb -vvv -d 0925:1234

Bus /dev/usb Device /dev/ugen0.6: 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

mcuee · 2026-04-26T10:54:34Z

Test log.

Edit: this test is not using the latest push today but previous version. I will test that later.

Interestingly it works every other time. Looks like there may be a data toggle related issues.

Supposedly EZ-USB FX2LP can handle data toggle bit automatically.

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd clean
rm -f ../hidapi_pr730/freebsd/hid.o hidapitester.o
rm -f hidapitester
mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd 
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@freebsd14:~/build/hidapitester $ cp hidapitester hidapitester_hidraw_pr730 

mcuee@freebsd14:~/build/hidapitester $ ls -la
total 243
drwxr-xr-x   7 mcuee mcuee    21 Apr 26 18:50 .
drwxr-xr-x  24 mcuee mcuee    28 Sep 13  2025 ..
drwxr-xr-x   8 mcuee mcuee    15 Apr 26 17:18 .git
drwxr-xr-x   3 mcuee mcuee     3 Sep 29  2024 .github
-rw-r--r--   1 mcuee mcuee   577 Apr 26 17:18 .gitignore
drwxr-xr-x   2 mcuee mcuee     4 Apr 26 17:18 .vscode
-rw-r--r--   1 mcuee mcuee  1940 Apr 26 17:18 CMakeLists.txt
-rw-r--r--   1 mcuee mcuee 35149 Sep 29  2024 LICENSE
-rw-r--r--   1 mcuee mcuee  2323 Sep 29  2024 Makefile
-rw-r--r--   1 mcuee mcuee  2329 Mar 30  2025 Makefile_pr728
-rw-r--r--   1 mcuee mcuee  2329 Mar 30  2025 Makefile_pr730
-rw-r--r--   1 mcuee mcuee  2330 Mar 30  2025 Makefile_pr730_hidraw_freebsd
-rw-r--r--   1 mcuee mcuee  8328 Apr 26 17:18 README.md
drwxr-xr-x   2 mcuee mcuee     8 Sep 29  2024 docs
-rw-r--r--   1 mcuee mcuee 21029 Apr 26 17:18 hidapitester.c
-rwxr-xr-x   1 mcuee mcuee 43360 Apr 26 18:50 hidapitester_hidraw_pr730
-rwxr-xr-x   1 mcuee mcuee 55560 Apr 26 17:19 hidapitester_libusb_git
-rwxr-xr-x   1 mcuee mcuee 56256 Apr 26 18:42 hidapitester_libusb_pr728
-rwxr-xr-x   1 mcuee mcuee 55560 Apr 26 18:42 hidapitester_libusb_pr730
-rw-r--r--   1 mcuee mcuee  1525 Mar 31  2025 test.txt
drwxr-xr-x   6 mcuee mcuee     6 Sep 29  2024 test_hardware

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730  --vidpi
d 0925:1234 --o
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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730  --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 · 2026-04-26T10:59:51Z

The above is not the issue of this PR though. libusb backend has the same issue. So does PR #728.

Edit: this test is not using the latest push today but previous version. I will test that later.

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr728  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr728  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr728  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr728  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_git  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_git  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_git  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_git  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730  --vidpi
d 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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730  --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 · 2026-04-26T11:15:19Z

Using the latest git push of this PR #730.

mcuee@freebsd14:~/build $ git clone https://github.com/aokblast/hidapi.git -b use_hid_raw hidapi_pr730_new
Cloning into 'hidapi_pr730_new'...
remote: Enumerating objects: 3537, done.
remote: Counting objects: 100% (4/4), done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 3537 (delta 0), reused 3 (delta 0), pack-reused 3533 (from 1)
Receiving objects: 100% (3537/3537), 3.30 MiB | 8.42 MiB/s, done.
Resolving deltas: 100% (2290/2290), done.

mcuee@freebsd14:~/build $ cd hidapitester/

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_new clean
rm -f ../hidapi_pr730_new/libusb/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_new 
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi_pr730_new/libusb/hid.c -o ../hidapi_pr730_new/libusb/hid.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi_pr730_new/libusb/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread

mcuee@freebsd14:~/build/hidapitester $ cp ./hidapitester ./hidapitester_libusb_pr730_new

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_new clean
rm -f ../hidapi_pr730_new/libusb/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd_new clean
rm -f ../hidapi_pr730_new/freebsd/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd_new 
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi_pr730_new/freebsd/hid.c -o ../hidapi_pr730_new/freebsd/hid.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi_pr730_new/freebsd/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread

mcuee@freebsd14:~/build/hidapitester $ cp ./hidapitester ./hidapitester_hidraw_pr730_new

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd_new clean
rm -f ../hidapi_pr730_new/freebsd/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ ls
CMakeLists.txt				hidapitester.c
LICENSE					hidapitester_hidraw_pr730
Makefile				hidapitester_hidraw_pr730_new
Makefile_pr728				hidapitester_libusb_git
Makefile_pr730				hidapitester_libusb_pr728
Makefile_pr730_hidraw_freebsd		hidapitester_libusb_pr730
Makefile_pr730_hidraw_freebsd_new	hidapitester_libusb_pr730_new
Makefile_pr730_new			test.txt
README.md				test_hardware
docs

As expected, no changing of the test results.

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --vidpid 0925:1234
--o
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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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 · 2026-04-26T11:44:16Z

Now I will continue the 128bytes FX2HID mod firmware testing.

Unfortunately this PR does not work.

PR #728 also does not seems to work either. Strange.

mcuee@freebsd14:~/build/hidapitester $ sudo fxload -v -D vid=0x04b4,pid=0x8613 -t fx2lp -I ../fx2hid/fx2hid_128bytes_report/fx2hid_128bytes/fx2hid.hex
microcontroller type: fx2lp
single stage:  load on-chip memory
open RAM hexfile image ../fx2hid/fx2hid_128bytes_report/fx2hid_128bytes/fx2hid.hex
stop CPU
write on-chip, addr 0x0600 len  234 (0x00ea)
write on-chip, addr 0x09e5 len   10 (0x000a)
write on-chip, addr 0x0380 len  428 (0x01ac)
write on-chip, addr 0x0080 len  768 (0x0300)
write on-chip, addr 0x0033 len    3 (0x0003)
write on-chip, addr 0x09ff len    7 (0x0007)
write on-chip, addr 0x07b8 len   92 (0x005c)
write on-chip, addr 0x0851 len   59 (0x003b)
write on-chip, addr 0x05fe len    2 (0x0002)
write on-chip, addr 0x0a07 len    4 (0x0004)
write on-chip, addr 0x09ef len    8 (0x0008)
write on-chip, addr 0x09b0 len   18 (0x0012)
write on-chip, addr 0x09f7 len    8 (0x0008)
write on-chip, addr 0x09c2 len   18 (0x0012)
write on-chip, addr 0x0a0b len    6 (0x0006)
write on-chip, addr 0x091d len   40 (0x0028)
write on-chip, addr 0x096a len   24 (0x0018)
write on-chip, addr 0x06ea len   22 (0x0016)
write on-chip, addr 0x099a len   22 (0x0016)
write on-chip, addr 0x088c len   54 (0x0036)
write on-chip, addr 0x0982 len   24 (0x0018)
write on-chip, addr 0x0814 len   61 (0x003d)
write on-chip, addr 0x0a11 len   36 (0x0024)
write on-chip, addr 0x08f1 len   44 (0x002c)
write on-chip, addr 0x08c2 len   47 (0x002f)
write on-chip, addr 0x0945 len   20 (0x0014)
write on-chip, addr 0x05b8 len   70 (0x0046)
write on-chip, addr 0x0959 len   17 (0x0011)
write on-chip, addr 0x0043 len    3 (0x0003)
write on-chip, addr 0x0053 len    3 (0x0003)
write on-chip, addr 0x0700 len  184 (0x00b8)
write on-chip, addr 0x0000 len    3 (0x0003)
write on-chip, addr 0x052c len   12 (0x000c)
write on-chip, addr 0x09d4 len   17 (0x0011)
write on-chip, addr 0x0538 len  128 (0x0080)
write on-chip, addr 0x0a06 len    1 (0x0001)
... WROTE: 2497 bytes, 36 segments, avg 69
reset CPU

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr728  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr728  --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

Interestingly hidapi git libusb backend (same as PR#730 libusb backend works a bit better and returns 64 bytes of data. But there is an offset of 64 bytes.

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_git  --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:
 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 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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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:
 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 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 · 2026-04-26T12:08:19Z

Unfortunately I am not so sure how to force it to Full Speed mode using the physical machine.

mcuee@freebsd14:~/build/hidapitester $ sudo fxload -v -D vid=0x04b4,pid=0x8613 -t fx2lp -I ../fx2hid/fx2hid_128bytes_report/fx2hid_128bytes/fx2hid.hex
microcontroller type: fx2lpmicrocontroller type: fx2lp
single stage:  load on-chip memory
open RAM hexfile image ../fx2hid/fx2hid_128bytes_report/fx2hid_128bytes/fx2hid.hex
stop CPU
write on-chip, addr 0x0600 len  234 (0x00ea)
write on-chip, addr 0x09e5 len   10 (0x000a)
write on-chip, addr 0x0380 len  428 (0x01ac)
write on-chip, addr 0x0080 len  768 (0x0300)
write on-chip, addr 0x0033 len    3 (0x0003)
write on-chip, addr 0x09ff len    7 (0x0007)
write on-chip, addr 0x07b8 len   92 (0x005c)
write on-chip, addr 0x0851 len   59 (0x003b)
write on-chip, addr 0x05fe len    2 (0x0002)
write on-chip, addr 0x0a07 len    4 (0x0004)
write on-chip, addr 0x09ef len    8 (0x0008)
write on-chip, addr 0x09b0 len   18 (0x0012)
write on-chip, addr 0x09f7 len    8 (0x0008)
write on-chip, addr 0x09c2 len   18 (0x0012)
write on-chip, addr 0x0a0b len    6 (0x0006)
write on-chip, addr 0x091d len   40 (0x0028)
write on-chip, addr 0x096a len   24 (0x0018)
write on-chip, addr 0x06ea len   22 (0x0016)
write on-chip, addr 0x099a len   22 (0x0016)
write on-chip, addr 0x088c len   54 (0x0036)
write on-chip, addr 0x0982 len   24 (0x0018)
write on-chip, addr 0x0814 len   61 (0x003d)
write on-chip, addr 0x0a11 len   36 (0x0024)
write on-chip, addr 0x08f1 len   44 (0x002c)
write on-chip, addr 0x08c2 len   47 (0x002f)
write on-chip, addr 0x0945 len   20 (0x0014)
write on-chip, addr 0x05b8 len   70 (0x0046)
write on-chip, addr 0x0959 len   17 (0x0011)
write on-chip, addr 0x0043 len    3 (0x0003)
write on-chip, addr 0x0053 len    3 (0x0003)
write on-chip, addr 0x0700 len  184 (0x00b8)
write on-chip, addr 0x0000 len    3 (0x0003)
write on-chip, addr 0x052c len   12 (0x000c)
write on-chip, addr 0x09d4 len   17 (0x0011)
write on-chip, addr 0x0538 len  128 (0x0080)
write on-chip, addr 0x0a06 len    1 (0x0001)
... WROTE: 2497 bytes, 36 segments, avg 69
reset CPU
mcuee@freebsd14:~/build/hidapitester $ sudo usbconfig
ugen0.1: <XHCI root HUB Intel> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
ugen0.2: <2.4GHz Wireless rechargeable vertical mouse [More&Better] SHARKOON Technologies GmbH> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.3: <Elecom Co., Ltd MR-K013 Multicard Reader Areson Technology Corp> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.4: <Hub Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
ugen0.5: <STK600 development board Atmel Corp.> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (500mA)
ugen0.7: <product 0x3503 IMC Networks> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.8: <USB3.2 Hub Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
ugen0.9: <USB 10/100/1G/2.5G LAN Realtek Semiconductor Corp.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (64mA)
ugen0.10: <USB Storage Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (224mA)
ugen0.6: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (80mA)

I already applied the changes to /boot/loader.conf and reboot the machine.

mcuee@freebsd14:~/build/hidapitester $ sudo cat /boot/loader.conf
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
cryptodev_load="YES"
zfs_load="YES"
hidraw_load="YES"
hw.usb.ehci.no_hs="1"

mcuee · 2026-04-26T12:15:00Z

The following bootloader.conf does not work either even after the reboot.

mcuee@freebsd14:~/build/hidapitester $ uname -a
FreeBSD freebsd14 15.0-RELEASE-p6 FreeBSD 15.0-RELEASE-p6 GENERIC amd64

mcuee@freebsd14:~/build/hidapitester $ sudo cat /boot/loader.conf
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
cryptodev_load="YES"
zfs_load="YES"
hidraw_load="YES"
#hw.usb.ehci.no_hs="1"
hint.ehci.0.disabled="1"
hint.ehci.1.disabled="1"

mcuee@freebsd14:~/build/hidapitester $ sudo kldstat
Id Refs Address                Size Name
 1  140 0xffffffff80200000  1f4dad0 kernel
 2    1 0xffffffff8214f000     79b0 hidraw.ko
 3    1 0xffffffff82157000   620c10 zfs.ko
 4    1 0xffffffff82778000     8808 cryptodev.ko
 5    1 0xffffffff831e5000     3570 fdescfs.ko
 6    1 0xffffffff83200000   210318 i915kms.ko
 7    2 0xffffffff83411000    8a190 drm.ko
 8    1 0xffffffff831e9000     22b8 iic.ko
 9    2 0xffffffff831ec000     4120 linuxkpi_video.ko
10    3 0xffffffff831f1000     7358 dmabuf.ko
11    3 0xffffffff831f9000     3378 lindebugfs.ko
12    1 0xffffffff8349c000     b480 ttm.ko
13    1 0xffffffff831fd000     21e8 hcons.ko
14    3 0xffffffff834a8000     30a8 hidmap.ko
15    1 0xffffffff834ac000     21e8 hms.ko
16    1 0xffffffff834af000     21e8 hsctrl.ko
17    1 0xffffffff834b2000     4250 ichsmb.ko
18    1 0xffffffff834b7000     2178 smbus.ko
19    1 0xffffffff834ba000     6210 ig4.ko
20    1 0xffffffff834c1000    32320 linux.ko
21    2 0xffffffff834f4000     6d98 mqueuefs.ko
22    4 0xffffffff834fb000     ce68 linux_common.ko
23    1 0xffffffff83508000    2e3f0 linux64.ko
24    1 0xffffffff83537000     2278 pty.ko
25    1 0xffffffff8353a000     73c0 linprocfs.ko
26    1 0xffffffff83542000     440c linsysfs.ko
27    1 0xffffffff83547000     58c0 ng_ubt.ko
28    7 0xffffffff8354d000     abb8 netgraph.ko
29    3 0xffffffff83558000     a330 ng_hci.ko
30    4 0xffffffff83563000     2670 ng_bluetooth.ko
31    1 0xffffffff83566000     8580 if_ure.ko
32    1 0xffffffff8356f000     31d0 uether.ko
33    1 0xffffffff83573000     e4a8 ng_l2cap.ko
34    1 0xffffffff83582000    1c0c8 ng_btsocket.ko
35    1 0xffffffff8359f000     3908 ng_socket.ko
36    1 0xffffffff835a3000     4860 nullfs.ko
37    1 0xffffffff835a8000     2a80 mac_ntpd.ko

mcuee@freebsd14:~/build/hidapitester $ sudo usbconfig
ugen0.1: <XHCI root HUB Intel> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
ugen0.2: <2.4GHz Wireless rechargeable vertical mouse [More&Better] SHARKOON Technologies GmbH> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.3: <Elecom Co., Ltd MR-K013 Multicard Reader Areson Technology Corp> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.4: <Hub Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
ugen0.5: <STK600 development board Atmel Corp.> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (500mA)
ugen0.6: <EZ-USB FX2 HID USBHIDIO Lakeview Research> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (80mA)
ugen0.7: <product 0x3503 IMC Networks> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.8: <USB3.2 Hub Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
ugen0.9: <USB 10/100/1G/2.5G LAN Realtek Semiconductor Corp.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (64mA)
ugen0.10: <USB Storage Genesys Logic, Inc.> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (224mA)

aokblast · 2026-04-27T06:11:29Z

Using the latest git push of this PR #730.

mcuee@freebsd14:~/build $ git clone https://github.com/aokblast/hidapi.git -b use_hid_raw hidapi_pr730_new
Cloning into 'hidapi_pr730_new'...
remote: Enumerating objects: 3537, done.
remote: Counting objects: 100% (4/4), done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 3537 (delta 0), reused 3 (delta 0), pack-reused 3533 (from 1)
Receiving objects: 100% (3537/3537), 3.30 MiB | 8.42 MiB/s, done.
Resolving deltas: 100% (2290/2290), done.

mcuee@freebsd14:~/build $ cd hidapitester/

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_new clean
rm -f ../hidapi_pr730_new/libusb/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_new 
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi_pr730_new/libusb/hid.c -o ../hidapi_pr730_new/libusb/hid.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi_pr730_new/libusb/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread

mcuee@freebsd14:~/build/hidapitester $ cp ./hidapitester ./hidapitester_libusb_pr730_new

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_new clean
rm -f ../hidapi_pr730_new/libusb/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd_new clean
rm -f ../hidapi_pr730_new/freebsd/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd_new 
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c ../hidapi_pr730_new/freebsd/hid.c -o ../hidapi_pr730_new/freebsd/hid.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" -c hidapitester.c -o hidapitester.o
cc -I/usr/local/include -I ../hidapi_pr730_new/hidapi -DHIDAPITESTER_VERSION=\"""v0.5""\" ../hidapi_pr730_new/freebsd/hid.o hidapitester.o -o hidapitester -L/usr/local/lib -lusb -liconv -pthread

mcuee@freebsd14:~/build/hidapitester $ cp ./hidapitester ./hidapitester_hidraw_pr730_new

mcuee@freebsd14:~/build/hidapitester $ gmake -f Makefile_pr730_hidraw_freebsd_new clean
rm -f ../hidapi_pr730_new/freebsd/hid.o hidapitester.o
rm -f hidapitester

mcuee@freebsd14:~/build/hidapitester $ ls
CMakeLists.txt				hidapitester.c
LICENSE					hidapitester_hidraw_pr730
Makefile				hidapitester_hidraw_pr730_new
Makefile_pr728				hidapitester_libusb_git
Makefile_pr730				hidapitester_libusb_pr728
Makefile_pr730_hidraw_freebsd		hidapitester_libusb_pr730
Makefile_pr730_hidraw_freebsd_new	hidapitester_libusb_pr730_new
Makefile_pr730_new			test.txt
README.md				test_hardware
docs

As expected, no changing of the test results.

mcuee@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --vidpid 0925:1234
--o
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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_hidraw_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --vidpid 0925:1234
--o
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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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@freebsd14:~/build/hidapitester $ sudo ./hidapitester_libusb_pr730_new  --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

This looks like a firmware bug, right?

mcuee · 2026-04-27T06:38:55Z

This looks like a firmware bug, right?

Not really in this particular case.

More like a FreeBSD USB bug to me since other Operating Systems have no issues.

Also EZ-USB FX2LP is supposed to handle data toggle correctly from HW side.

BTW, this original FW comes from Jan Axelson, no modification from my side.

If possible, please get the cheap EZ-FX2LP board from online store and try yourself.

mcuee · 2026-04-27T06:43:32Z

For anyone interested in High Speed USB development and testing, EZ-USB FX2LP is highly recommended. The board is pretty cheap to get from 3rd party vendors (cheap clone of CY3689 EZ-USB FX2LP Discovery Kit)
https://www.infineon.com/assets/row/public/documents/24/44/infineon-cy3689-ez-usb-fx2lp-discovery-kit-quick-start-guide-usermanual-en.pdf

For anyone interested in Super Speed USB development and testing, EZ-USB FX3 is highly recommended. The board is not that cheap but still manageable. It used to be at around US$50 but now it is at US$90.15.
https://www.infineon.com/evaluation-board/cyusb3kit-003

mcuee · 2026-04-27T14:55:36Z

I am stilll using VirtualBox VM under Windows 11 for this test, but I have switched the VM back to the default USB configuration (OHCI + EHCI).

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

Then I use my trusted modified Generic PIC USB HID example (modified from the Lakeview Research Generic HID example to add Input/Output/Feature report IDs). It is a Full Speed USB device.

It was mentioned in the following discussion.
#590

FW source code and old libusb test codes are here.
https://github.com/mcuee/picusb/tree/master/lvr_genhid_mod

The device works well under Windows.

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:7001 --open --buflen 64 -l 3 --send-output 2,1,2  --read-input
Opening device, vid/pid: 0x0925/0x7001
Writing output report of 3-bytes...wrote 3 bytes:
 02 01 02
Reading up to 3-byte input report, 250 msec timeout...read 3 bytes:
 01 01 02
Closing device

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:7001 --open --buflen 64 -l 3 --send-feature 3,7,8  --read-feature 4
Opening device, vid/pid: 0x0925/0x7001
Writing 3-byte feature report...wrote 3 bytes:
 03 07 08
Reading 3-byte feature report, report_id 4...read 3 bytes:
 04 07 08
Closing device

It also works fine with this PR under FreeBSD VM.

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --vidpid 0925:7001 --open --buflen 64 -l 3 --send-output 2,5,6  --read-input
Opening device, vid/pid: 0x0925/0x7001
Writing output report of 3-bytes...wrote 3 bytes:
 02 05 06
Reading up to 3-byte input report, 250 msec timeout...read 3 bytes:
 01 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --vidpid 0925:7001 --open --buflen 64 -l 3 --send-output 2,5,6  --read-input
Opening device, vid/pid: 0x0925/0x7001
Writing output report of 3-bytes...wrote 3 bytes:
 02 05 06
Reading up to 3-byte input report, 250 msec timeout...read 3 bytes:
 01 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --open --buflen 64 -l 3 --send-feature 3,5,6  --read-feature 4
Opening device, vid/pid:0x0000/0x0000, usagePage/usage: 0/0
Device opened
Writing 3-byte feature report...wrote 3 bytes:
 03 05 06
Reading 3-byte feature report, report_id 4...read 3 bytes:
 04 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --open --buflen 64 -l 3 --send-feature 3,5,6  --read-feature 4
Opening device, vid/pid:0x0000/0x0000, usagePage/usage: 0/0
Device opened
Writing 3-byte feature report...wrote 3 bytes:
 03 05 06
Reading 3-byte feature report, report_id 4...read 3 bytes:
 04 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo lsusb -d 0925:7001 -vvv

Bus /dev/usb Device /dev/ugen0.2: ID 0925:7001 Lakeview Research
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x0925 Lakeview Research
  idProduct          0x7001
  bcdDevice            0.01
  iManufacturer           1 Lakeview Research
  iProduct                2 Generic HID
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    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               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      45
          Report Descriptor: (length is 45)
            Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
                            (null)
            Item(Local ): Usage, data= [ 0x01 ] 1
                            (null)
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Global): Logical Minimum, data= [ 0x00 ] 0
            Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Global): Report ID, data= [ 0x01 ] 1
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Input, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            Item(Global): Report ID, data= [ 0x02 ] 2
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Output, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            Item(Global): Report ID, data= [ 0x03 ] 3
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Feature, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            Item(Global): Report ID, data= [ 0x04 ] 4
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Feature, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            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               1
      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               1
can't get device qualifier: Input/output error
can't get debug descriptor: Input/output error
Device Status:     0x0001
  Self Powered

aokblast · 2026-04-28T08:11:18Z

EZ-USB FX2LP

Just buy a EZ-USB FX2LP. I spend two days on configuring stm32h750 + usb3320 and it fails. I think there are some design flaws on stm32h750 as some pin output doesn't follow the ulpi standard.

See: https://community.st.com/t5/stm32-mcus-embedded-software/stm32h750-usb3300-no-signals-on-ulpi/td-p/225293?fbclid=IwY2xjawRdSk5leHRuA2FlbQIxMABicmlkETF1eVg0M2d2OENpV1lWdnpjc3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHr4fjotlcri4aRfLeR3qxxa3_rOWLG8XdiaZHQXLlSejiReV3U-u7F052oj-_aem_DLqIO7VIk_LDjl6YhWkqEw

aokblast · 2026-05-18T16:27:09Z

I am stilll using VirtualBox VM under Windows 11 for this test, but I have switched the VM back to the default USB configuration (OHCI + EHCI).

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

Then I use my trusted modified Generic PIC USB HID example (modified from the Lakeview Research Generic HID example to add Input/Output/Feature report IDs). It is a Full Speed USB device.

It was mentioned in the following discussion. #590

FW source code and old libusb test codes are here. https://github.com/mcuee/picusb/tree/master/lvr_genhid_mod

The device works well under Windows.

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:7001 --open --buflen 64 -l 3 --send-output 2,1,2  --read-input
Opening device, vid/pid: 0x0925/0x7001
Writing output report of 3-bytes...wrote 3 bytes:
 02 01 02
Reading up to 3-byte input report, 250 msec timeout...read 3 bytes:
 01 01 02
Closing device

PS C:\work\libusb\hidapitester> .\hidapitester_git_winapi.exe --vidpid 0925:7001 --open --buflen 64 -l 3 --send-feature 3,7,8  --read-feature 4
Opening device, vid/pid: 0x0925/0x7001
Writing 3-byte feature report...wrote 3 bytes:
 03 07 08
Reading 3-byte feature report, report_id 4...read 3 bytes:
 04 07 08
Closing device

It also works fine with this PR under FreeBSD VM.

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --vidpid 0925:7001 --open --buflen 64 -l 3 --send-output 2,5,6  --read-input
Opening device, vid/pid: 0x0925/0x7001
Writing output report of 3-bytes...wrote 3 bytes:
 02 05 06
Reading up to 3-byte input report, 250 msec timeout...read 3 bytes:
 01 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --vidpid 0925:7001 --open --buflen 64 -l 3 --send-output 2,5,6  --read-input
Opening device, vid/pid: 0x0925/0x7001
Writing output report of 3-bytes...wrote 3 bytes:
 02 05 06
Reading up to 3-byte input report, 250 msec timeout...read 3 bytes:
 01 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --open --buflen 64 -l 3 --send-feature 3,5,6  --read-feature 4
Opening device, vid/pid:0x0000/0x0000, usagePage/usage: 0/0
Device opened
Writing 3-byte feature report...wrote 3 bytes:
 03 05 06
Reading 3-byte feature report, report_id 4...read 3 bytes:
 04 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo ./hidapitester_pr730_hidraw_new  --open --buflen 64 -l 3 --send-feature 3,5,6  --read-feature 4
Opening device, vid/pid:0x0000/0x0000, usagePage/usage: 0/0
Device opened
Writing 3-byte feature report...wrote 3 bytes:
 03 05 06
Reading 3-byte feature report, report_id 4...read 3 bytes:
 04 05 06
Closing device

mcuee@freebsdvm:~/build/hidapitester $ sudo lsusb -d 0925:7001 -vvv

Bus /dev/usb Device /dev/ugen0.2: ID 0925:7001 Lakeview Research
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x0925 Lakeview Research
  idProduct          0x7001
  bcdDevice            0.01
  iManufacturer           1 Lakeview Research
  iProduct                2 Generic HID
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    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               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      45
          Report Descriptor: (length is 45)
            Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
                            (null)
            Item(Local ): Usage, data= [ 0x01 ] 1
                            (null)
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Global): Logical Minimum, data= [ 0x00 ] 0
            Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Global): Report ID, data= [ 0x01 ] 1
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Input, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            Item(Global): Report ID, data= [ 0x02 ] 2
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Output, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            Item(Global): Report ID, data= [ 0x03 ] 3
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Feature, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            Item(Global): Report ID, data= [ 0x04 ] 4
            Item(Local ): Usage, data= [ 0x00 ] 0
                            (null)
            Item(Main  ): Feature, data= [ 0x02 0x01 ] 258
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Buffered Bytes
            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               1
      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               1
can't get device qualifier: Input/output error
can't get debug descriptor: Input/output error
Device Status:     0x0001
  Self Powered

Hi,

I received the EXUSB FX2 last week. I spent the weekend setting up the toolchain, since the SDK is very outdated and Infineon no longer maintains or provides the download link. I’ve fixed the firmware now.

The issue turned out to be quite simple: you forgot to arm EP1OUT the first time. To fix it, add:

EP1OUTBC = anynumber;

at the end of TD_Init().

sudo   ./hidapitester   --open-path /dev/hidraw4 --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. path: /dev/hidraw4
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

aokblast · 2026-05-19T07:58:14Z

@mcuee I also did some experiments. FX2 is packet-based, which means if you set MPS = 64 and the report size = 128, it will not work correctly when the device wants to send a short packet (< 64 bytes). The reason is the following:

xHCI assumes there will be 2 packets (128 / 64), so it sends the following sequence to the device:

IN token with size = 64
Device replies with 64 bytes
Host ACK
Another IN token with size = 64
Device replies with another 64 bytes
Host ACK

This completes a full cycle for receiving a 128-byte report from the device.

However, if the device sends a short packet, the sequence becomes:

IN token with size = 64
Device replies with a short packet (< 64 bytes)
Host ACK
Another IN token with size = 64
Device never replies, so xHCI never completes the transfer

As a result, the receive operation eventually hangs and fails.

mcuee · 2026-05-19T08:52:01Z

@aokblast

Thanks a lot for the updates. Let me digest and check again.

The issue turned out to be quite simple: you forgot to arm EP1OUT the first time

You are absolute right here. I have seen strange issues previously with random data for the initial run. I am not the author of the origina FX2HID code. The original auther is Jan Axelson (author of the book "USB Complete").

I also did some experiments. FX2 is packet-based, which means if you set MPS = 64 and the report size = 128, it will not work correctly when the device wants to send a short packet (< 64 bytes).

I am not so sure about this one. Different OS may be different as well. Let me check.

mcuee · 2026-05-19T08:57:27Z

@aokblast

I have some modified EZ-USB FX2HID firmware as well. I am not a programmer myself, please check as well. Thanks.

HIDAPI testing device with known good firmware, including using Virtual HID device for CI Testing #590

Modified version of the fx2hid firmware mods (with bug fixes in TD_Init function)
fx2hid_64bytes.zip
fx2hid_128bytes_report.zip
fx2hid_512bytes_packet.zip
fx2hid_512bytes_report.zip
fx2hid_1024bytes_packet.zip

Common files from Cypress
Target.zip

mcuee · 2026-05-19T09:05:16Z

@aokblast

Infineon/Cypress CY3689 and CY3684 download links (you need to register). The clones are mostly copy of CY3689.
https://www.infineon.com/products/universal-serial-bus/usb-2-0-peripheral-controllers/ez-usb-fx2lp-fx2g2-usb-2-0

mcuee · 2026-05-21T01:59:05Z

xHCI assumes there will be 2 packets (128 / 64), so it sends the following sequence to the device:

@aokblast

BTW, EZ-USB FX2LP is a High Speed USB device, do you mean to say EHCI and not xHCI?

I also did some experiments. FX2 is packet-based, which means if you set MPS = 64 and the report size = 128, it will not work correctly when the device wants to send a short packet (< 64 bytes).

Another thing, I have tested different firmwares. So you may get confused here.

Some of the firwares only have 2 bytes HID reports, like the original FX2HID example (High Speed USB, which also works under Full Speed USB).
Some of the firmwars only have 3 bytes HID reports, like the following USB PIC example (Full Speed USB). I have not tested the later mod with 32Bytes/64Bytes reports.
https://github.com/mcuee/picusb/tree/master/lvr_genhid_mod
Then I have the modified FX2HID with 64Bytes/128Bytes/512Bytes/1024Bytes firmware. But the 512B/1024B firmware are not well tested across different OS. There may be more bugs inside.

I will carry out tests under FreeBSD over the weekend.

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