PetteriAimonen opened a new pull request, #11186: URL: https://github.com/apache/nuttx/pull/11186
## Summary Previous `adjtime()` implementation was limited to adjusting system timer tick period. This commit reimplements the internals to use a kernel watchdog timer. Platform-independent part of the code now works also for adjusting hires RTC and tickless timer rate. Currently there are no in-tree architecture implementations for high-res RTC nor tickless timer adjustments, but the API is now available. Other improvements: - Support query of remaining adjustment by passing NULL to first argument of adjtime(). This matches Linux behavior. - Improve resolution available for architecture driver, previously limited to 1 microsecond per tick. Now 1 nanosecond per second on API level. For ARM SysTick based drivers the hardware resolution is 1 clock cycle per tick. ## Impact User code facing API is unchanged. Architecture code API has changed: `up_adj_timer_period()` is replaced by `up_adjtime()`. The in-tree implementations for STM32 and SAMv7 architectures have been updated to match. ## Testing Tested on custom STM32F407 board in classic systick configuration, and also with `CONFIG_RTC_HIRES=y` against custom RTC driver. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
