Class Hierarchy   Compound List   File List   Compound Members   File Members  

---

systime.c File Reference

system time services. More...

Functions

• void systime_handler (void)

  system time handler for the 16bit timer OCIA irq. More...

• void systime_init (void)

  initialize system timer. More...

• void systime_shutdown (void)

  shutdown system timer. More...

• void systime_set_switcher (void* switcher)

  set task switcher vector. More...

• void systime_set_timeslice (unsigned char slice)

  set multitasking timeslice in ms. More...

Variables

• volatile time_t sys_time

  current system time in ms. More...

• unsigned char tm_timeslice

  task time slice.

• volatile unsigned char tm_current_slice

  current time remaining.

• void* tm_switcher_vector

  pointer to task switcher.

---

Detailed Description

system time services.

Author(s):

Markus L. Noga <noga@inrialpes.fr>

---

Function Documentation

void systime_handler (void)

system time handler for the 16bit timer OCIA irq.

this is the pulse of the system. task switcher and motor driver calls are initiated here.

void systime_init (void)

initialize system timer.

task switcher initialized to empty handler motors turned off

void systime_shutdown (void)

shutdown system timer.

will also stop task switching and motors.

void systime_set_switcher (void * switcher)

set task switcher vector.

Parameters:

switcher - the switcher

void systime_set_timeslice (unsigned char slice)

set multitasking timeslice in ms.

Parameters:

slice - the timeslice. must be at least 5ms.

---

Variable Documentation

volatile time_t sys_time

current system time in ms.

Warning:

This is a 32 bit value which will overflow after 49.7 days of continuous operation.

---

-0.1.7 is released under Mozilla Public License. Original code © 1998-1999 by Markus L. Noga.