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Klipper is a 3d-printer firmware
a6a6b21e4d
Change TIMER_MIN_TRY_TICKS from 2us to 90 instructions. On newer chips 2us is a large amount of time - for example on the 520Mhz stm32h723 it would be 1040 instructions. Using a large time can result in "busy waiting" in the irq handler when the cpu may be better spent running tasks. The armcm_timer.c code is used on most ARM cortex-M chips and on all of these chips the SysTick timer should be tied directly to the instruction counter. This change should be safe because it should not take more than 90 instructions to reschedule the timer on any of these chips. Also, all of these chips should be able to exit the irq handler and reenter it in less than 90 instructions allowing more time for tasks to run if the next timer is more than 90 timer ticks in the future. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> |
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| config | ||
| docs | ||
| klippy | ||
| lib | ||
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| src | ||
| test | ||
| .gitignore | ||
| COPYING | ||
| Makefile | ||
| README.md | ||
Welcome to the Klipper project!
The Klipper firmware controls 3d-Printers. It combines the power of a general purpose computer with one or more micro-controllers. See the features document for more information on why you should use the Klipper software.
Start by installing Klipper software.
Klipper software is Free Software. See the license or read the documentation. We depend on the generous support from our sponsors.