Projects/Incomplete/Webserver/Lib/uip/conf/clock-arch.c

   1 #include "global-conf.h"
   2 #include <stdint.h>
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <avr/interrupt.h>
   6 #include <avr/io.h>
   7 #include <avr/sfr_defs.h>
   8
   9 #include "clock-arch.h"
  10
  11 //Counted time
  12 volatile clock_time_t clock_datetime = 0;
  13
  14 //Overflow interrupt
  15 ISR(TIMER1_COMPA_vect)
  16 {
  17         clock_datetime += 1;
  18 }
  19
  20 //Initialise the clock
  21 void clock_init()
  22 {
  23         OCR1A  = ((F_CPU / 1024) / 100);
  24         TCCR1A = (1 << WGM12);
  25         TCCR1B = ((1 << CS12) | (1 << CS10));
  26         TIMSK1 = (1 << OCIE1A);
  27 }
  28
  29 //Return time
  30 clock_time_t clock_time()
  31 {
  32         clock_time_t time;
  33
  34         cli();
  35                 time = clock_datetime;
  36         sei();
  37
  38         return time;
  39 }