Projects/Webserver/Lib/uip/clock.c

   1 #include <stdint.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4
   5 #include <LUFA/Common/Common.h>
   6
   7 #include "clock.h"
   8
   9 //Counted time
  10 volatile clock_time_t clock_datetime = 0;
  11
  12 //Overflow interrupt
  13 ISR(TIMER1_COMPA_vect, ISR_BLOCK)
  14 {
  15         clock_datetime += 1;
  16 }
  17
  18 //Initialise the clock
  19 void clock_init()
  20 {
  21         OCR1A  = (((F_CPU / 1024) / 100) - 1);
  22         TCCR1B = ((1 << WGM12) | (1 << CS12) | (1 << CS10));
  23         TIMSK1 = (1 << OCIE1A);
  24 }
  25
  26 //Return time
  27 clock_time_t clock_time()
  28 {
  29         clock_time_t time;
  30
  31         GlobalInterruptDisable();
  32         time = clock_datetime;
  33         GlobalInterruptEnable();
  34
  35         return time;
  36 }
  37