rtc.h

Go to the documentation of this file.

/* declarations for low-frequency timer */
/* Copyright (C) 2009 Holger Dietze
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) version 3.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License along
 *   with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef RTC_H
#define RTC_H

#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <avr/io.h>

void hl_rtc_init_osc (void);

void hl_rtc_init (void);

void hl_sleep_for_tick (uint16_t ms);

#define F_RTC_OSC (32768)

typedef struct hl_time_s {
  uint32_t seconds;
  uint32_t useconds;
  uint16_t ticks;
} hl_time_t;

hl_time_t hl_get_current_time (void);

uint16_t hl_get_timer_ticks (void);

inline void hl_wakeup_memory (void)
{
  XMCRB &= ~_BV(XMM1); /* assume XMM2:0 = 010 */
}

#endif