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qmk_firmware/keyboards/preonic
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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
..
keymaps Merge remote-tracking branch 'origin/master' into develop 2022-07-02 12:41:05 +00:00
rev1 Tidy up NKRO_ENABLE rules (#15382) 2021-12-09 16:05:44 +11:00
rev2 Tidy up NKRO_ENABLE rules (#15382) 2021-12-09 16:05:44 +11:00
rev3 Add Encoder Map Swap Hands config for boards that support both features (#17294) 2022-06-03 12:12:15 +01:00
rev3_drop [Core] Use polled waiting on ChibiOS platforms that support it (#17607) 2022-07-11 15:17:05 +02:00
config.h Remove `NO_ACTION_MACRO` and `NO_ACTION_FUNCTION` from keyboard config.h (#16655) 2022-03-15 13:56:58 +00:00
info.json Remove width, height and key_count from info.json (#14274) 2021-09-12 14:04:56 +10:00
preonic.c Planck/Preonic - Enable default encoder behaviour on configurator (#16104) 2022-01-29 14:28:13 +00:00
preonic.h [Keyboard] Use old custom matrix for Drop Planck+Preonic (#14488) 2021-09-18 20:10:32 -07:00
readme.md
…

readme.md

Preonic

Preonic

A compact 50% (12x5) ortholinear keyboard kit made and sold by OLKB and Massdrop. More info on qmk.fm

Keyboard Maintainer: Jack Humbert
Hardware Supported: Preonic PCB rev1, rev2, rev3
Hardware Availability: OLKB.com, Massdrop

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

make preonic/rev2:default

Install examples:

make preonic/rev2:default:dfu         # For Preonic rev1 or rev2
make preonic/rev3:default:dfu-util    # For Preonic rev3

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