Part LVII. Common Clock Services

Jonathan Larmour

eCosCentric Limited

Table of Contents

193. Overview
193.1. Introduction
193.2. Functionality
193.3. Concepts and structure
194. Dependencies
194.1. HAL
194.2. Kernel
194.3. Wallclock (RTC)
194.4. C library and POSIX layers
195. Configuration
196. API reference
cyg_clock_get_systime() — Retrieve the current system time
cyg_clock_get_systime_res — Obtain the resolution of the system clock
cyg_clock_set_systime() — Sets the system clock to the supplied time
cyg_clock_sync_wallclock() — Force the wallclock to be updated from system time
cyg_clock_adjust_systime() — Adjust the system time
Time change notification — Registering and deregistering for notification of changes to system time
cyg_clock_sysclock_handle() — Return a handle to the system clock
Time conversions — Converting between clock ticks and calendar time