* Use polled waiting on platforms that support it
Due to context switching overhead waiting a very short amount of time on
a sleeping thread is often not accurate and in fact not usable for timing
critical usage i.e. in a driver. Thus we use polled waiting for ranges
in the us range on platforms that support it instead. The fallback is
the thread sleeping mechanism.
This includes:
* ARM platforms with CYCCNT register (ARMv7, ARMv8) this is
incremented at CPU clock frequency
* GD32VF103 RISC-V port with CSR_MCYCLE register this is incremented at
CPU clock frequency
* RP2040 ARMv6 port which uses the integrated timer peripheral which is
incremented with a fixed 1MHz frequency
* Use wait_us() instead of chSysPolledDelayX
...as it is powered by busy waiting now.
* Add chibios waiting methods test bench
QMK runs on a diverse range of keyboards. Some of these keyboards are well maintained and see constant community contributions, while others are part of the repository for historical reasons.
Official QMK Keyboards
Ortholinear Keyboards - Jack Humbert
What makes OLKB keyboards shine is a combo of lean aesthetics, compact size, and killer tactile feel. These are available through olkb.com as well as through Massdrop from time to time, as easy to assemble kits.
Planck — A 40% DIY powerhouse of customizability and modification capability. It's a lean, mean, typing machine.
ErgoDox EZ — A powerful split mechanical keyboard.
Planck EZ — A 40% DIY powerhouse of customizability and modification capability. It's a lean, mean, typing machine, which ships fully assembled with a two-year warranty.
Community-supported QMK Keyboards
These keyboards are part of the QMK repository, but their manufacturers are not official maintainers of the repository.
Since there are too many to list here and keep updated, please see the folder listing instead.
3f5dc47296