Problem with Keychron K3V2 usb connection

[seyahdoo]

I was having issues with SonixQMK on my Keychron K3V2, when i plug the keyboard to my machine it was sometimes not working completely and i had to replug it several times to get it to work.

While I was investigating this, I found that commit ff55126 has broken this keyboards usb behaviour. It is consistently working correctly on d5e4fb2 but it does not work on ff55126.

Please do investigate further.

[seyahdoo]

I tried doing this once again and I could not reproduce this behaviour. I belive it was caused by something else. It still occurs on latest SonixQMK sn32_master (a46e96cdd01cffc32d369c9317808799166f1ace) though.

I worked around this problem with adding "EEPROM_RESET" keycode to my keymap, If the keyboard does not work when I plug it in, I just press "EEPROM_RESET" and it connects after that.

[seyahdoo]

And then I worked around having to press Fn+Space everytime I plug in with adding eeconfig_init(); on keyboard_post_init_user. Now it works everytime I plug in the keyboard.

void keyboard_post_init_user(void) {
    eeconfig_init();
}

[dexter93]

Hi there. Investigation is ongoing. It seems to be host USB controller related, depending on platform. Could you please report back on your system specs? And if it is still present with the latest commits? Thanks

[seyahdoo]

Hello @dexter93, thanks for spending time on this issue. You can find my pc specs down below. If you need any additional information, please do ask here.

my specs are;
ASUS G14 GA401QM-HZ242T
AMD Ryzen 9 5900HS with Radeon Graphics
RTX 3060 (Laptop)

[seyahdoo]

Also good to note:
https://seyahdoo.com/blog/qmk-on-keychron-k3v2/
https://github.com/seyahdoo/k3-v2-optical-qmk

[dexter93]

Hello @dexter93, thanks for spending time on this issue. You can find my pc specs down below. If you need any additional information, please do ask here.

my specs are; ASUS G14 GA401QM-HZ242T AMD Ryzen 9 5900HS with Radeon Graphics RTX 3060 (Laptop)

Looks to be consistent, affecting AMD hosts. The eeprom workaround is a new find, and might explain some things. Can you please try #define NO_USB_STARTUP_CHECK on the latest fork head (sn32_develop) and see if the behavior changes?

[seyahdoo]

Now that i have looked at the code again, my latest firmware Im using on my keyboard is using #define NO_USB_STARTUP_CHECK and not using eeconfig_init();. I will recompile with latest sn32 develop now.

[seyahdoo]

tried with latest sn32 develop, it does work with #define NO_USB_STARTUP_CHECK defined

[seyahdoo]

tried with latest sn32 develop, and #define NO_USB_STARTUP_CHECK not defined, and it does not work 6/7 times when you plug in. When it didnt work on the first plug in, It did work after "EEPROM_RESET" keycode.

[dexter93]

tried with latest sn32 develop, and #define NO_USB_STARTUP_CHECK not defined, and it does not work 6/7 times when you plug in. When it didnt work on the first plug in, It did work after "EEPROM_RESET" keycode.

Interesting results. Can you please also expand this test by adding this SonixQMK#48 ?

[seyahdoo]

[seyyid@DESKTOP-UMH0T25 ~]$ qmk compile -kb keychron/k3/rgb/optical_iso -km iso_seyahdoo
Ψ Compiling keymap with make --jobs=1 keychron/k3/rgb/optical_iso:iso_seyahdoo


QMK Firmware 0.7.101
Making keychron/k3/rgb/optical_iso with keymap iso_seyahdoo

arm-none-eabi-gcc.exe (GCC) 10.1.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiling: keyboards/keychron/k3/../../../drivers/led/sn32/matrix_sn32f24xx.c                       [OK]
Compiling: keyboards/keychron/k3/k3.c                                                               [OK]
Compiling: keyboards/keychron/k3/rgb/optical_iso/optical_iso.c                                      [OK]
Compiling: keyboards/keychron/k3/keymaps/iso_seyahdoo/keymap.c                                      [OK]
Compiling: quantum/quantum.c                                                                        [OK]
Compiling: quantum/send_string.c                                                                    [OK]
Compiling: quantum/bitwise.c                                                                        [OK]
Compiling: quantum/led.c                                                                            [OK]
Compiling: quantum/action.c                                                                         [OK]
Compiling: quantum/action_layer.c                                                                   [OK]
Compiling: quantum/action_macro.c                                                                   [OK]
Compiling: quantum/action_tapping.c                                                                 [OK]
Compiling: quantum/action_util.c                                                                    [OK]
Compiling: quantum/eeconfig.c                                                                       [OK]
Compiling: quantum/keyboard.c                                                                       [OK]
Compiling: quantum/keymap_common.c                                                                  [OK]
Compiling: quantum/keycode_config.c                                                                 [OK]
Compiling: quantum/sync_timer.c                                                                     [OK]
Compiling: quantum/logging/debug.c                                                                  [OK]
Compiling: quantum/logging/sendchar.c                                                               [OK]
Compiling: quantum/logging/print.c                                                                  [OK]
Compiling: quantum/bootmagic/bootmagic_lite.c                                                       [OK]
Compiling: quantum/bootmagic/magic.c                                                                [OK]
Compiling: quantum/debounce/sym_defer_g.c                                                           [OK]
Compiling: quantum/main.c                                                                           [OK]
Compiling: lib/printf/printf.c                                                                      [OK]
Compiling: drivers/eeprom/eeprom_driver.c                                                           [OK]
Compiling: platforms/chibios/eeprom_sn32.c                                                          [OK]
Compiling: quantum/color.c                                                                          [OK]
Compiling: quantum/rgb_matrix/rgb_matrix.c                                                          [OK]
Compiling: quantum/rgb_matrix/rgb_matrix_drivers.c                                                  [OK]
Compiling: lib/lib8tion/lib8tion.c                                                                  [OK]
Compiling: drivers/led/sn32/rgb_matrix_sn32f24xb.c                                                  [OK]
Compiling: quantum/process_keycode/process_rgb.c                                                    [OK]
Compiling: quantum/led_tables.c                                                                     [OK]
Compiling: quantum/process_keycode/process_magic.c                                                  [OK]
Compiling: quantum/dip_switch.c                                                                     [OK]
Compiling: quantum/process_keycode/process_grave_esc.c                                              [OK]
Compiling: quantum/process_keycode/process_space_cadet.c                                            [OK]
Assembling: lib/chibios/os/common/startup/ARMCMx/compilers/GCC/crt0_v6m.S                           [OK]
Assembling: lib/chibios/os/common/startup/ARMCMx/compilers/GCC/vectors.S                            [OK]
Assembling: lib/chibios/os/common/ports/ARMCMx/compilers/GCC/chcoreasm_v6m.S                        [OK]
Compiling: tmk_core/protocol/host.c                                                                 [OK]
Compiling: tmk_core/protocol/report.c                                                               [OK]
Compiling: tmk_core/protocol/usb_device_state.c                                                     [OK]
Compiling: tmk_core/protocol/usb_util.c                                                             [OK]
Compiling: platforms/chibios/platform.c                                                             [OK]
Compiling: platforms/chibios/suspend.c                                                              [OK]
Compiling: platforms/chibios/timer.c                                                                [OK]
Compiling: platforms/chibios/bootloader.c                                                           [OK]
Compiling: tmk_core/protocol/chibios/usb_main.c                                                     [OK]
Compiling: tmk_core/protocol/chibios/chibios.c                                                      [OK]
Compiling: tmk_core/protocol/usb_descriptor.c                                                       [OK]
Compiling: tmk_core/protocol/chibios/usb_driver.c                                                   [OK]
Compiling: tmk_core/protocol/chibios/usb_util.c                                                     [OK]
Compiling: lib/chibios/os/oslib/src/chmboxes.c                                                      [OK]
Compiling: lib/chibios/os/oslib/src/chmemcore.c                                                     [OK]
Compiling: lib/chibios/os/oslib/src/chmemheaps.c                                                    [OK]
Compiling: lib/chibios/os/oslib/src/chmempools.c                                                    [OK]
Compiling: lib/chibios/os/oslib/src/chpipes.c                                                       [OK]
Compiling: lib/chibios/os/oslib/src/chobjcaches.c                                                   [OK]
Compiling: lib/chibios/os/oslib/src/chdelegates.c                                                   [OK]
Compiling: lib/chibios/os/oslib/src/chfactory.c                                                     [OK]
Compiling: lib/chibios/os/common/startup/ARMCMx/compilers/GCC/crt1.c                                [OK]
Compiling: lib/chibios-contrib/os/common/ext/SONiX/SN32F2xx/system_SN32F240B.c                      [OK]
Compiling: lib/chibios/os/rt/src/chsys.c                                                            [OK]
Compiling: lib/chibios/os/rt/src/chdebug.c                                                          [OK]
Compiling: lib/chibios/os/rt/src/chtrace.c                                                          [OK]
Compiling: lib/chibios/os/rt/src/chvt.c                                                             [OK]
Compiling: lib/chibios/os/rt/src/chschd.c                                                           [OK]
Compiling: lib/chibios/os/rt/src/chthreads.c                                                        [OK]
Compiling: lib/chibios/os/rt/src/chtm.c                                                             [OK]
Compiling: lib/chibios/os/rt/src/chstats.c                                                          [OK]
Compiling: lib/chibios/os/rt/src/chregistry.c                                                       [OK]
Compiling: lib/chibios/os/rt/src/chsem.c                                                            [OK]
Compiling: lib/chibios/os/rt/src/chmtx.c                                                            [OK]
Compiling: lib/chibios/os/rt/src/chcond.c                                                           [OK]
Compiling: lib/chibios/os/rt/src/chevents.c                                                         [OK]
Compiling: lib/chibios/os/rt/src/chmsg.c                                                            [OK]
Compiling: lib/chibios/os/rt/src/chdynamic.c                                                        [OK]
Compiling: lib/chibios/os/common/ports/ARMCMx/chcore.c                                              [OK]
Compiling: lib/chibios/os/common/ports/ARMCMx/chcore_v6m.c                                          [OK]
Compiling: lib/chibios/os/hal/osal/rt-nil/osal.c                                                    [OK]
Compiling: lib/chibios/os/hal/src/hal.c                                                             [OK]
Compiling: lib/chibios/os/hal/src/hal_st.c                                                          [OK]
Compiling: lib/chibios/os/hal/src/hal_buffers.c                                                     [OK]
Compiling: lib/chibios/os/hal/src/hal_queues.c                                                      [OK]
Compiling: lib/chibios/os/hal/src/hal_flash.c                                                       [OK]
Compiling: lib/chibios/os/hal/src/hal_mmcsd.c                                                       [OK]
Compiling: lib/chibios/os/hal/src/hal_adc.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_can.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_crypto.c                                                      [OK]
Compiling: lib/chibios/os/hal/src/hal_dac.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_efl.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_gpt.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_i2c.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_i2s.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_icu.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_mac.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_mmc_spi.c                                                     [OK]
Compiling: lib/chibios/os/hal/src/hal_pal.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_pwm.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_rtc.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_sdc.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_serial.c                                                      [OK]
Compiling: lib/chibios/os/hal/src/hal_serial_usb.c                                                  [OK]
Compiling: lib/chibios/os/hal/src/hal_sio.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_spi.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_trng.c                                                        [OK]
Compiling: lib/chibios/os/hal/src/hal_uart.c                                                        [OK]
Compiling: lib/chibios/os/hal/src/hal_usb.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_wdg.c                                                         [OK]
Compiling: lib/chibios/os/hal/src/hal_wspi.c                                                        [OK]
Compiling: lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/GPIO/hal_pal_lld.c                    [OK]
Compiling: lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c                    lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c: In function 'usb_lld_serve_interrupt':
lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c:271:13: error: implicit declaration of function 'usb_serve_endpoints' [-Werror=implicit-function-declaration]
  271 |             usb_serve_endpoints(usbp, 0, true);
      |             ^~~~~~~~~~~~~~~~~~~
lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c: At top level:
lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c:319:6: error: conflicting types for 'usb_serve_endpoints' [-Werror]
  319 | void usb_serve_endpoints(USBDriver* usbp, usbep_t ep, bool in) {
      |      ^~~~~~~~~~~~~~~~~~~
lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c:271:13: note: previous implicit declaration of 'usb_serve_endpoints' was here
  271 |             usb_serve_endpoints(usbp, 0, true);
      |             ^~~~~~~~~~~~~~~~~~~
cc1.exe: all warnings being treated as errors
 [ERRORS]
 |
 |
 |
make[1]: *** [tmk_core/rules.mk:457: .build/obj_keychron_k3_rgb_optical_iso/lib/chibios-contrib/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.o] Error 1
Make finished with errors
make: *** [Makefile:478: keychron/k3/rgb/optical_iso:iso_seyahdoo] Error 1

trying only changing the /os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h file on sn32_master havent compiled. will try with that PRs commit now.

[seyahdoo]

tried again in a different way and it did compile on sn32_master with only /os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h change now. But the issue persists, with this firmware it only worked 7/50 times on first plugging.

[seyahdoo]

keep in mind that it also always works right after the flash, all the time, even with broken firmware.

[dexter93]

tried again in a different way and it did compile on sn32_master with only /os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h change now. But the issue persists, with this firmware it only worked 7/50 times on first plugging.

This PR needs rebasing to target sn32_develop and should be tested against that branch. The issue is known to affect only cold boot/usb replug conditions

[seyahdoo]

ok, will checkout to sn32_develop and try there