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Add open-drain GPIO support. #15282

Merged
merged 6 commits into from
Dec 27, 2021
Merged

Add open-drain GPIO support. #15282

merged 6 commits into from
Dec 27, 2021

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tzarc
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@tzarc tzarc commented Nov 23, 2021

Description

Adds support for open-drain outputs.

Types of Changes

  • Core
  • Bugfix
  • New feature
  • Enhancement/optimization
  • Keyboard (addition or update)
  • Keymap/layout/userspace (addition or update)
  • Documentation

Checklist

  • My code follows the code style of this project: C, Python
  • I have read the PR Checklist document and have made the appropriate changes.
  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • I have read the CONTRIBUTING document.
  • I have added tests to cover my changes.
  • I have tested the changes and verified that they work and don't break anything (as well as I can manage).

@tzarc tzarc requested a review from a team November 23, 2021 19:39
@drashna drashna requested a review from a team November 23, 2021 19:55
@tzarc tzarc marked this pull request as draft November 23, 2021 21:11
sigprof
sigprof reviewed Nov 23, 2021
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platforms/avr/gpio.h
@@ -25,7 +25,9 @@ typedef uint8_t pin_t;
#define setPinInput(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
#define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinInputLow(pin) _Static_assert(0, "AVR processors cannot implement an input as pull low")
#define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinOutputPushPull(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinOutputOpenDrain(pin) _Static_assert(0, "AVR platform does not implement an open-drain output")
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Technically it is possible to implement an open-drain output on AVR — set the PORTx bit to 0, then write the inverted output value to the DDRx bit. The problem is that it requires either some conditional code in the writePin() implementation, or a separate set of macros like writeOpenDrainPin(), writeOpenDrainPinHigh(), writeOpenDrainPinLow() (with bad consequences if you use a wrong kind of macro for the chosen pin mode).

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Yep, but nobody has asked for it, and nobody's using it. Figured it'd be a problem for another day.

@tzarc tzarc marked this pull request as ready for review November 28, 2021 01:54
sigprof
sigprof reviewed Dec 9, 2021
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platforms/chibios/gpio.h Outdated
#define setPortBitInput(pin, bit) palSetPadMode(PAL_PORT(pin), (bit), PAL_MODE_INPUT)
#define setPortBitInputHigh(pin, bit) palSetPadMode(PAL_PORT(pin), (bit), PAL_MODE_INPUT_PULLUP)
#define setPortBitInputLow(pin, bit) palSetPadMode(PAL_PORT(pin), (bit), PAL_MODE_INPUT_PULLDOWN)
#define setPortBitOutput(pin, bit) palSetPadMode(PAL_PORT(pin), (bit), PAL_MODE_OUTPUT_PUSHPULL)
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Hmm, looks like the implementation of setPortBitOutputPushPull() and setPortBitOutputOpenDrain() is missing here?

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As discussed on Discord, given that it's not in use anywhere but one keyboard, and it has its own implementation of the port-based GPIO functions, the port-related operations have been removed for the time being until we work out a proper solution for them.

@tzarc
Remove port GPIO implementations as the only board that uses it has i…
d33a2d1 
…ts own internal defs anyway. Will wait for first-class handling of ports in core before reimplementing.
@tzarc tzarc merged commit 6e40dfa into qmk:develop Dec 27, 2021
@tzarc tzarc deleted the open-drain-outputs branch December 27, 2021 00:52
@tzarc tzarc mentioned this pull request Dec 27, 2021
Merged
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roccojiang added a commit to roccojiang/qmk_firmware that referenced this pull request Feb 26, 2022
@roccojiang @tzarc
@qmk-bot @wheredoesyourmindgo @KarlK90 @xia0 @fauxpark @drashna @zvecr @rubienr @SmollChungus @uqs @vectorstorm @daskygit @chadaustin @nomis @jaygreco @ViToni @peepeetee @yfuku
Target develop branch instead of master (#10)
a8a626d 
* Start `develop` for 2022q1.

* Added cancel_key_lock function (qmk#15321)

* [Core] Remove matrix_is_modified() and debounce_is_active() (qmk#15349)

* [Keyboard] Added Wakizashi 40 (qmk#15336)

Co-authored-by: Ryan <fauxpark@gmail.com>

* Change default USB Polling rate to 1kHz (qmk#15352)

* [Keyboard] Convert ergoinu to SPLIT_KEYBOARD (qmk#15305)

* Implement MAGIC_TOGGLE_CONTROL_CAPSLOCK (qmk#15368)

* Convert not_so_minidox to SPLIT_KEYBOARD (qmk#15306)

* Convert ai03/orbit to SPLIT_KEYBOARD (qmk#15340)

* Tidy up existing i2c_master implementations (qmk#15376)

* Move chibios defines out of header

* Make some avr defines internal

* Generalize Unicode defines (qmk#15409)

* Add missing define for unicode common (qmk#15416)

* Remove Deprecated USB Polling comment from vusb.c (qmk#15420)

* Expand rotational range for PMW3360 Optical Sensor (qmk#15431)

* Add support for 21.11.x, remove 21.6.x as ChibiOS "canceled" it. (qmk#15435)

* added missing audio_off_user() callback (qmk#15457)

Co-authored-by: Raoul Rubien <raoul.rubienr@gmail.com>

* [Core] Don't send keyboard reports that propagate no changes to the host  (qmk#14065)

* Migrate serial_uart usages to UART driver (qmk#15479)

* Migrate Thermal Printer feature to UART driver

* Migrate 40percentclub UT47 to UART driver

* Migrate Centromere to UART driver

* Migrate Chimera Ergo to UART driver

* Migrate Chimera Let's Split to UART driver

* Migrate Chimera Ortho to UART driver

* Migrate Chimera Ortho Plus to UART driver

* Migrate Comet46 to UART driver

* Migrate Palm USB converter to UART driver

* Migrate Sun USB converter to UART driver

* Migrate Dichotomy to UART driver

* Migrate Honeycomb to UART driver

* Migrate Mitosis to UART driver

* Migrate Redox W to UART driver

* Migrate Uni660 to UART driver

* Migrate Telophase to UART driver

* Fix build failure for UT47 (qmk#15483)

* Use the PR title rather than parsing the commit message. (qmk#15537)

* Migrate RN42 to UART driver and refactor (qmk#15492)

* [CI] Format code according to conventions (qmk#15541)

* Documentation Typo fix (qmk#15538)

* Fix some typos, especially the sensor name. (qmk#15557)

* Add open-drain GPIO support. (qmk#15282)

* Add open-drain GPIO support.

* `qmk format-c`

* Wording.

* Remove port GPIO implementations as the only board that uses it has its own internal defs anyway. Will wait for first-class handling of ports in core before reimplementing.

* Fixes potential wpm sampling overflow, along with code comment fixes (qmk#15277)

Co-authored-by: Trevor Powell <trevor@vectorstorm.com.au>

* Add a clarification to an error message (qmk#15207)

Makes this a bit more foolproof.

See qmk#15202

* [Core] Split support for pointing devices. (qmk#15304)

* Draft implementation

* formatting

* fix combined buttons

* remove pimoroni throttle

* sync pointing on a throttle loop with checksum

* no longer used

* doh

Co-authored-by: Drashna Jaelre <drashna@live.com>

* switch pimoroni to a cpi equivalent

* add cpi support

* allow user modification of seperate mouse reports

* a little tidy up

* add *_RIGHT defines.

* docs

* doxygen comments

* basic changelog

* clean up pimoroni

* small doc fixes

* Update docs/feature_pointing_device.md

Co-authored-by: Drashna Jaelre <drashna@live.com>

* performance tweak if side has usb

* Don't run init funtions on wrong side

* renamed some variables for consistency

* fix pimoroni typos

* Clamp instead of OR

* Promote combined values to uint16_t

* Update pointing_device.c

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

* Format code according to conventions (qmk#15588)

* Make (un)register code functions weak (qmk#15285)

* Defer pin operations to gpio.h (qmk#15589)

* Add sym_defer_pr debouncer type (qmk#14948)

* Durgod: Increase scan rate by using wait_us GPT timer (qmk#14091)

Lower the tick rate from 10kHz to 1kHz (otherwise all the extra interrupts
reduce the achievable scan rate). Enable the WAIT_US_TIMER using GPT TIM3.

Observed scan rate on the K320 is increased from 625Hz to 2090-2120Hz.

* Format code according to conventions (qmk#15590)

* Fixup line endings

* More GPIO compilation fixes. (qmk#15592)

* Custom matrix lite support for split keyboards (qmk#14674)

* Custom matrix lite support for split keyboards

* WIP: matrix -> matrix_common refactor

* Move matrix_post_scan() to matrix_common.c

* Refactor `bootloader_jump()` implementations (qmk#15450)

* Refactor `bootloader_jump()` implementations

* Fix tests?

* Rename `atmel-samba` to `md-boot`

* [Keymap] Add vitoni keymap for GMMK Pro (ISO) (qmk#15006)

* [Keymap] Add vitoni layout for GMMK Pro (ISO)

Keymap has layered cursor keys similar to laptop keyboards.

* Configure RGB defaults for startup

* Configure encoder to change value/brightness on FN layer

* Remove FN layer and add dedicated RGB layer

* Make RGB layer sticky (using TG) to avoid holding FN while configuring RGB

* Add RGB indicators for active layers

* Add RGB indicator for active RESET mode

Signed-off-by: Victor Toni <victor.toni@gmail.com>

* Configure idle / USB suspend settings

* Add RGB fade in when resuming after suspend

* Add RGB fade out before suspend

* Add fade out before idle

* Add breathe effect when idle

* Convert some more boards to Matrix Lite (qmk#15489)

* Fix for SPI write timing in PMW3360 driver (qmk#15519)

Timing does not match Pixart documentation for this sensor (may have been carried forward from adns9800).
Not aware of any issues coming from this currently.
It should only cause issues when writing to multiple registers in succession which currently only happens during initialization for the PMW3360.
This should prevent future issues with write operations if other features of the sensor are added.

* Format code according to conventions (qmk#15593)

* pwm3360 driver cleanup and diff reduction to adns9800 (qmk#15559)

* Diff reduction between ADNS9800 and PMW3360 drivers.

They are very similar devices. This (somewhat) unreadable diff is
essentially a no-op, but it makes a `vimdiff` between the 2 drivers much
more readable.

* Cleanup pwm3360 driver some more.

Remove redundant calls to spi_start() and spi_stop(), as pmw3360_write()
will already call these.

* [Core] Fix bug and code regression for Split Common (qmk#15603)

* Format code according to conventions (qmk#15604)

* [Bug] Include missing string.h include (qmk#15606)

* move bm65hsrgb_iso and bm68hsrgb to rev1/ (qmk#15132)

* Move to organization folder (qmk#15481)

* move directory

* fix

* move wings42 to dailycraft

* Adjust wings42 to work with organization folder.

* [Keyboard] Update Tractyl Manuform to use Split Pointing Device Sync

* [Keyboard] Update grs_70ec to use newer custom matrix (qmk#15609)

* [Keyboard] Fix compiler issue with tractyl manuform 4x6 (qmk#15646)

* Fix split pointing for analog joystick (qmk#15691)

Co-authored-by: Nick Brassel <nick@tzarc.org>

* Format code according to conventions (qmk#15693)

* Update pmw3360 comments to match the datasheet better, fix delays. (qmk#15682)

* move @yangdigi 's keyboards to a YDKB folder (qmk#15681)

* Format code according to conventions (qmk#15705)

Co-authored-by: Nick Brassel <nick@tzarc.org>
Co-authored-by: QMK Bot <hello@qmk.fm>
Co-authored-by: wheredoesyourmindgo <moemanchu@icloud.com>
Co-authored-by: Stefan Kerkmann <karlk90@pm.me>
Co-authored-by: xiao <307671+xia0@users.noreply.github.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Dipl.-Ing. Raoul Rubien, BSc <rubienr@sbox.tugraz.at>
Co-authored-by: Raoul Rubien <raoul.rubienr@gmail.com>
Co-authored-by: SmollChungus <38044391+SmollChungus@users.noreply.github.com>
Co-authored-by: uqs <uqs@FreeBSD.org>
Co-authored-by: vectorstorm <github@gridbug.org>
Co-authored-by: Trevor Powell <trevor@vectorstorm.com.au>
Co-authored-by: Hugo Osvaldo Barrera <hugo@barrera.io>
Co-authored-by: Dasky <32983009+daskygit@users.noreply.github.com>
Co-authored-by: Chad Austin <chad@chadaustin.me>
Co-authored-by: Simon Arlott <70171+nomis@users.noreply.github.com>
Co-authored-by: Jay Greco <jayv.greco@gmail.com>
Co-authored-by: Victor Toni <ViToni@users.noreply.github.com>
Co-authored-by: Alabastard-64 <96358682+Alabastard-64@users.noreply.github.com>
Co-authored-by: peepeetee <43021794+peepeetee@users.noreply.github.com>
Co-authored-by: yfuku <30647434+yfuku@users.noreply.github.com>
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