qmk_firmware/keyboards/planck
Stefan Kerkmann 3f5dc47296
[Core] Use polled waiting on ChibiOS platforms that support it (#17607)
* 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
2022-07-11 15:17:05 +02:00
..
ez
keymaps Merge remote-tracking branch 'origin/master' into develop 2022-07-02 12:18:55 +00:00
light
rev1
rev2
rev3
rev4
rev5
rev6
rev6_drop [Core] Use polled waiting on ChibiOS platforms that support it (#17607) 2022-07-11 15:17:05 +02:00
thk
config.h
info.json
planck.c
planck.h
readme.md

Planck

Planck

A compact 40% (12x4) ortholinear keyboard kit made and sold by OLKB and Massdrop. More info on qmk.fm

Keyboard Maintainer: Jack Humbert
Hardware Supported: Planck PCB rev1, rev2, rev3, rev4, rev5, rev6; Planck Light, Planck EZ
Hardware Availability: OLKB.com, Massdrop, Ergodox (Planck EZ)

Make example for this keyboard (after setting up your build environment):

make planck/rev4:default

Install examples:

make planck/rev5:default:dfu         # For Planck rev5 or earlier and Planck Light
make planck/rev6:default:dfu-util    # For Planck rev6

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.