Chronos Library

This library contains time management functions.

Supported Hardware

Functions Guide

Timelapse functions to measure the time between two events:

• chronos_tl_init : initializes the timelapse structure
• chronos_tl_start : to start the timelapse count
• chronos_tl_stop : to stop the timelapse count

Timeout functions to count time up to a timeout value:

• chronos_tout_start : starts counting ticks and sets the timeout.
• chronos_tout_is_expired : checks whether the timeout is expired or not (i.e. the number of ticks at this time is greater than the timeout or not)
• chronos_tout_refresh : restarts the count
• chronos_tout_set_timeout: sets the timeout

How to use

• Include lib-chronos.h in your main
• Create an instance of timelapse_t
• If you need to measure a certain period of time:
  • Use chronos_tl_init to initialize the structure for the timelapse
  • Use chronos_tl_start to start counting time and chronos_tl_stop to stop the count.
  • The timelapse_t structure (here timelapse_t instance) now contains the start tick (instance.start_tick), the end tick (instance.end_tick) and the time in ms between the two (instance.diff_ms) If you need to count time uo to a timeout value:
  • Use chronos_tout_start to set a timeout value and start counting.
  • Use chronos_tout_is_expired to check wether the count has surpassed the timeout value or not.
  • Use chronos_tout_refresh to restart the count.
  • Use chronos_tout_set_timeout to set a timeout without starting the count.
  • The timelapse_t structure (here timelapse_t instance) now contains the start tick (instance.start_tick), the end tick (instance.end_tick) and the timeout value (instance.timeout)