/*
 * time.c
 *
 *  Created on: 20.05.2014
 *      Author: wn
 */
#include <msp430g2553.h>
#include <isr_compat.h>
#include <stdint.h>

#include "time.h"


volatile unsigned long timestamp;
Uptime uptime;

ISR(TIMER0_A0, TA0_ISR) {
  static uint8_t state = 0;

  timestamp++;

  switch (state) {
  case 0:
    P1OUT = BIT0;
    state = 1;
    break;
  case 1:
    P1OUT = BIT6;
    state = 0;
    break;
  default:
    state = 0;
  }
}


void timeInit() {
  timestamp = 0;

  P1DIR |= BIT6 | BIT0;
  P1OUT = 0;

  TACCR0 = 1024;
  TACCTL0 = CCIE;
  TACTL = MC_1 | ID_3 | TASSEL_1 | TACLR;
}


unsigned long millis() {
  return timestamp;
}


Uptime::Uptime() : m_seconds(0), m_minutes(0), m_hours(0), m_days(0) {

}


void Uptime::incOneSecond() {
  m_seconds++;
  if (m_seconds >= 60) {
    m_seconds -= 60;
    m_minutes++;
    if (m_minutes >= 60) {
      m_minutes -= 60;
      m_hours++;
      if (m_hours >= 24) {
        m_hours -= 24;
        m_days++;
      }
    }
  }
}