qmk_userspace

26545 commits 2 branches 1 tag 294 MiB

Author SHA1 Message Date

Author	SHA1	Message	Date
Stefan Kerkmann	45ffe42f1a	[Fix] Make ChibiOS `_wait.h` independent of `quantum.h` (#17645 )	2022-07-12 21:54:33 +02:00
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
Joel Challis	2728603fe6	Move tmk_core/common/<plat> (#13918 )	2021-11-19 10:41:02 -08:00

Stefan Kerkmann

45ffe42f1a

[Fix] Make ChibiOS _wait.h independent of quantum.h (#17645 )

2022-07-12 21:54:33 +02:00

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

Joel Challis

2728603fe6

Move tmk_core/common/<plat> (#13918 )

2021-11-19 10:41:02 -08:00

Renamed from tmk_core/common/chibios/_wait.h (Browse further)

3 commits