627ceebef3
* ws2812: Fix number of nops for AVR at 8 MHz When trying to calculate the number of nops for AVR running at 8 MHz, the value of `w3` is expected to be negative; however, because `F_CPU` is defined in tmk_core/avr.mk with the `UL` suffix, the preprocessor performs its calculations using `unsigned long`, getting a very large positive number instead of the expected negative number; this then results in generating code with a huge number of nops. Fix the broken calculations by performing a comparison before subtraction, so that the unsigned number wraparound does not occur. The keyboard which triggers the problem is `handwired/promethium`; the buggy code silently compiles, but the resulting timings would be completely wrong. * ws2812: Clean up the code after the 8 MHz fix Remove old code which was unsuccessfully trying to clamp negative w1, w2 and w3 values to 0, and set w1_nops, w2_nops and w3_nops directly. |
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|---|---|---|
| .github | ||
| .vscode | ||
| api_data | ||
| bin | ||
| docs | ||
| drivers | ||
| keyboards | ||
| layouts | ||
| lib | ||
| platforms/chibios | ||
| quantum | ||
| tests | ||
| tmk_core | ||
| users | ||
| util | ||
| .clang-format | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .travis.yml | ||
| book.json | ||
| bootloader.mk | ||
| build_full_test.mk | ||
| build_json.mk | ||
| build_keyboard.mk | ||
| build_layout.mk | ||
| build_test.mk | ||
| CODE_OF_CONDUCT.md | ||
| common.mk | ||
| common_features.mk | ||
| disable_features.mk | ||
| Dockerfile | ||
| Doxyfile | ||
| doxygen-todo | ||
| LICENSE | ||
| license_GPLv2.md | ||
| license_GPLv3.md | ||
| license_Modified_BSD.md | ||
| Makefile | ||
| message.mk | ||
| nose2.cfg | ||
| readme.md | ||
| requirements-dev.txt | ||
| requirements.txt | ||
| secrets.tar.enc | ||
| setup.cfg | ||
| shell.nix | ||
| show_options.mk | ||
| testlist.mk | ||
| Vagrantfile | ||
Quantum Mechanical Keyboard Firmware
This is a keyboard firmware based on the tmk_keyboard firmware with some useful features for Atmel AVR and ARM controllers, and more specifically, the OLKB product line, the ErgoDox EZ keyboard, and the Clueboard product line.
Documentation
The docs are powered by Docsify and hosted on GitHub. They are also viewable offline; see Previewing the Documentation for more details.
You can request changes by making a fork and opening a pull request, or by clicking the "Edit this page" link at the bottom of any page.
Supported Keyboards
The project also includes community support for lots of other keyboards.
Maintainers
QMK is developed and maintained by Jack Humbert of OLKB with contributions from the community, and of course, Hasu. The OLKB product firmwares are maintained by Jack Humbert, the Ergodox EZ by ZSA Technology Labs, the Clueboard by Zach White, and the Atreus by Phil Hagelberg.
Official Website
qmk.fm is the official website of QMK, where you can find links to this page, the documentation, and the keyboards supported by QMK.