Projects/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         TCCR1B = ((1 << WGM12) | (1 << CS12) | (1 << CS10));
  25         TIMSK1 = (1 << OCIE1A);
  26 }
  27
  28 //Return time
  29 clock_time_t clock_time()
  30 {
  31         clock_time_t time;
  32
  33         cli();
  34                 time = clock_datetime;
  35         sei();
  36
  37         return time;
  38 }