Delay (delay)
Busy-wait delay functions based on the clock source (clocksource), providing nanosecond, microsecond, and millisecond precision delays, suitable for short and precise wait scenarios.
Delayed Callback (delaycall)
A delayed callback mechanism based on the timer system, asynchronously executing a callback function after a specified number of milliseconds, without manual timer lifecycle management.
Wall Clock (wallclock)
System wall clock management module, maintaining time based on the clock source (clocksource), with RTC persistence, timezone conversion, and date-time read/write support.