Part LVI. Common Clock Services

Jonathan Larmour

eCosCentric Limited

Table of Contents

190. Overview
190.1. Introduction
190.2. Functionality
190.3. Concepts and structure
191. Dependencies
191.1. HAL
191.2. Kernel
191.3. Wallclock (RTC)
191.4. C library and POSIX layers
192. Configuration
193. 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