Hid joystick interface #4226

a-chol · 2018-10-24T11:30:27Z

This implements a joystick feature, including a joystick_task function called from tmk, specific keycodes for joystick buttons and a usb hid interface for v-usb and lufa.
I tested the v-usb backend, as I have a compatible board, but only provide a compilable-but-untested implementation for lufa. Runtime tests of this backend is appreciated.
In order to test, you have to add JOYSTICK_ENABLE = yes to your rules.mk and

#define JOYSTICK_BUTTON_COUNT 8
#define JOYSTICK_AXES_COUNT 2

in your config.h

Any feedback is appreciated.

closes #3903

docs/feature_joystick.md

quantum/joystick.h

quantum/quantum_keycodes.h

tmk_core/protocol/lufa/lufa.c

drashna · 2018-10-24T15:13:31Z

It looks like this is added to VUSB and LUFA but not chibios, or arm_atsam. Is there a reason why, other than a lack of hardware?

quantum/quantum_keycodes.h

a-chol · 2018-10-25T06:19:26Z

I'm AFK for a few days so I'll apply your suggestions when I come back.
I only implemented VUSB and Lufa mostly for hardware reasons. Giving Lufa a shot was a way to bring in more feedback and there is no reason to spare the others.

a-chol · 2018-10-25T09:29:29Z

By the way, if anyone else has the hardware and feels like giving it a try, please.do. I'm not sure of the process of collaborating on a pull request on github though, maybe submitting a PR to my fork?

drashna · 2018-10-25T16:47:37Z

Also, don't forget that if you're adding a feature page, you'll need to link it in /docs/_summary.md and /docs/_sidebar.md

docs/feature_joystick.md

a-chol · 2018-11-30T23:38:28Z

I just pushed an untested implementation of the hid joystick interface for chibios. It builds with the chibios_test keyboard, but lacks the analog read function. I couldn't find a simple function like the analogRead from the drivers/avr folder. It can still be usefull as is though.
So far, there is an implementation for AVR v-usb (tested), AVR LUFA (untested) and ARM chibios (untested).
If anyone can give this a try on any of those untested platforms, it would be of great help.

drashna · 2018-12-02T01:24:04Z

What about ATSAM? (massdrop boards)

a-chol · 2018-12-02T13:46:17Z

I can give it a try but without the hardware to test, it's really hit-or-miss. I'm afraid that pushing incomplete implementation in this PR requires it to be validated before merging, which in the end postpones the merge for other protocols.
Unless we manage to have a tester for each protocol, I don't see that PR being merged anytime soon.

drashna · 2018-12-06T03:45:19Z

Also, it looks like you have a merge conflict here.

drashna · 2019-01-25T20:52:30Z

It looks like there are some merge conflicts that need to be resolved

a-chol · 2019-01-30T10:31:48Z

The merge conflicts are resolved.
The feature is reaching completion. I've validated the adc reading code with my own keyboard, properly reading and mapping the inputs to the int8 value range.
Axis configuration now supports defining the input, output and ground pins to configure. When configured, the pin configuration is saved, then restored so that the qmk matrix scan, relying on input pins not changing, works properly.
Axis configuration also support defining calibration values using a low, resting and high raw adc reference values. Sometimes the resting position doesn't return the middle value of the extreme positions, but it is essential that the resting position return a value of 0 once mapped to the hid range, so a piecewise transfer function between raw adc values and the hid output range was required.
Beside these changes, I implemented the reading code in a function called from a weak linkage function, so that any keyboard can redefine the adc reading procedure and still call the original quantum code (for reading a qwic device for instance).

ADC reading is supported for AVR only for now. I think it would be more valuable for the project to merge it as is and rely on subsequent pull requests to implement the missing parts for other controllers.

edit: I've completed the documentation as well, but I could go a little deeper in the circuitry segment. As far as I understand, it should be possible to connect an analog device to any keyboard, but my experience and knowledge is limited to my own keyboard, so validation from an experienced electronician would be required.

drashna · 2019-02-05T18:39:57Z

This is ready to go, correct?

a-chol · 2019-02-05T22:45:16Z

I just pushed some documentation fixes, I confirm it's ready to go!

drashna · 2019-03-27T02:36:31Z

There are some merge conflicts here. If you could resolve these?

a-chol · 2019-04-04T20:42:09Z

Conflicts are resolved. It's pretty cool to be able to do so from github directly!

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

4sStylZ · 2020-09-14T14:25:45Z

Hi there, I just want to say thank's to everyone involved in this PR !
That's a very cool feature. I will test it soon !

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

The analog joystick feature does not compile accross all platforms (see qmk#4226 (review)) All joystick related code is put between #if JOYSTICK_AXES_COUNT > 0 This also reduces the size of the compiled code when you only want to use joystick buttons. \### How to reproduce bug: 1. `qmk new-keyboard` 2. select the MCU `GD32VF103` (other options don't matter) 3. `rules.mk` Add `JOYSTICK_ENABLE = yes` 4. `config.h` : Add ```c #define JOYSTICK_BUTTON_COUNT 1 #define JOYSTICK_AXES_COUNT 0 ``` 5. (optional) Change a key to `JS_BUTTON0` in keymap 6. run `qmk compile` against new keyboard Errors will show related to the ADC. \### Disclaimer 1. I do not have the proper HW to debug on all keyboards, but it does work from the RP2040 branch which has a similar problem See qmk#14877 (comment) 2. I guess `ifeq ($(shell expr $(JOYSTICK_AXES_COUNT) \> 0), 1)` ain't so pretty, but it didn't work with `#ifneq ($(JOYSTICK_AXES_COUNT), 0) ??

@a-chol

* add support for hid gamepad interface add documentation for HID joystick Add joystick_task to read analog axes values even when no key is pressed or release. update doc Update docs/feature_joystick.md Manage pin setup and read to maintain matrix scan after analog read * Incorporates patches and changes to HID reporting There are some patches provided by @a-chol incorporated on this commit, and also some changes I made to the HID Report structure. The most interesting is the one dealing with number of buttons: Linux doesn't seem to care, but Windows requires the HID structure to be byte aligned (that's in the spec). So if one declares 8/16/32... buttons they should not have any issues, but this is what happens when you have 9 buttons: ``` bits |0|1|2|3|4|5|6|7| |*|*|*|*|*|*|*|*| axis 0 (report size 8) |*|*|*|*|*|*|*|*| ... |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| |*|*|*|*|*|*|*|*| axis 6 |*|*|*|*|*|*|*|*| first 8 buttons (report size 1) |*| | | | | | | | last of 9 buttons, not aligned ``` So for that I added a conditonal that will add a number of reports with size 1 to make sure it aligns to the next multiple of 8. Those reports send dummy inputs that don't do anything aside from aligning the data. Tested on Linux, Windows 10 and Street Fighter (where the joystick is recognized as direct-input) * Add save and restore of each pin used in reading joystick (AVR). Allow output pin to be JS_VIRTUAL_AXIS if the axis is connected to Vcc instead of an output pin from the MCU. Fix joystick report id Fix broken v-usb hid joystick interface. Make it more resilient to unusual settings (none multiple of eight button count, 0 buttons or 0 axes) Correct adc reading for multiple axes. Piecewise range conversion for uncentered raw value range. Input, output and ground pin configuration per axis. Documentation fixes * Fix port addressing for joystick analog read * The other required set of changes As per the PR, the changes still holding it up. Add onekey for testing. Fix ARM builds. Fix device descriptor when either axes or buttons is zero. Add compile-time check for at least one axis or button. Move definition to try to fix conflict. PR review comments. qmk cformat * avoid float functions to compute range mapping for axis adc reading * Remove V-USB support for now. Updated docs accordingly. * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/usb_descriptor.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add support for joystick adc reading for stm32 MCUs. Fix joystick hid report sending for chibios * Fix HID joystick report sending for ChibiOS. Add one analog axis to the onekey:joystick keymap. Fix pin state save and restore during joystick analog read for STM32 MCUs. * Update tmk_core/protocol/chibios/usb_main.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Update tmk_core/protocol/lufa/lufa.c Co-Authored-By: Ryan <fauxpark@gmail.com> * Add missing mcuconf.h and halconf.h to onekey:joystick keymap. Add suggested fixes from PR. * Switch saveState and restoreState signature to use pin_t type. onekey:joystick : add a second axis, virtual and programmatically animated. * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Update docs/feature_joystick.md Co-Authored-By: Ryan <fauxpark@gmail.com> * Add PR corrections * Remove halconf.h and mcuconf.h from onekey keymaps * Change ADC_PIN to A0 Co-authored-by: achol <allecooll@hotmail.com> Co-authored-by: José Júnior <jose.junior@gmail.com> Co-authored-by: a-chol <achol@notamail.com> Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Ryan <fauxpark@gmail.com>

mechmerlin reviewed Oct 24, 2018

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drashna added the enhancement label Oct 24, 2018

noroadsleft reviewed Oct 24, 2018

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a-chol mentioned this pull request Nov 3, 2018

HID Gamepad support #3903

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coredump reviewed Nov 28, 2018

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a-chol force-pushed the hid_joystick branch from 0072ac2 to 533ca73 Compare November 29, 2018 23:29

a-chol force-pushed the hid_joystick branch from 0e8c2e4 to 384dddb Compare December 6, 2018 20:08

a-chol force-pushed the hid_joystick branch from 3dc0c64 to 030f86c Compare January 30, 2019 08:23

drashna approved these changes Feb 6, 2019

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drashna requested review from skullydazed, fredizzimo and jackhumbert February 6, 2019 22:47

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skullydazed approved these changes Mar 22, 2019

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a-chol force-pushed the hid_joystick branch from eba9ccb to 97cdbf4 Compare April 11, 2019 22:03

a-chol force-pushed the hid_joystick branch from 97cdbf4 to 5939a44 Compare April 24, 2019 19:42

fauxpark mentioned this pull request Aug 6, 2020

Fix joystick compile issues #9949

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noroadsleft added the future_2020q3 label Aug 9, 2020

Leesam mentioned this pull request Sep 16, 2020

[Feature Request] Support higher resolution joystick analog values #10330

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seb-pau mentioned this pull request Sep 25, 2020

Joystick 16-bit support #10439

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a-chol mentioned this pull request May 10, 2021

Digitizer HID interface : absolute coordinates for mouse cursor #12851

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skullydazed mentioned this pull request Jun 25, 2021

[Feature Request] Documentation for using simple switches with JOYSTICK_ENABLE #13344

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amrsoll mentioned this pull request May 1, 2022

[Core][Bugfix] Joystick: Ignore axis-related code when axes count=0 #16983

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Hid joystick interface #4226

Hid joystick interface #4226

a-chol commented Oct 24, 2018 •

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Hid joystick interface #4226

Hid joystick interface #4226

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