Subversion Repositories idreammicro-avr

/**************************************************************************//**
 * \brief DS1307 RTC library - Demonstration program
 * \author Copyright (C) 2011  Julien Le Sech - www.idreammicro.com
 * \version 1.0
 * \date 20090501
 *
 * This file is part of the iDreamMicro library.
 *
 * This library is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see http://www.gnu.org/licenses/
 ******************************************************************************/

/**************************************************************************//**
 * \file demo_ds1307.c
 ******************************************************************************/

/******************************************************************************
 * Header file inclusions.
 ******************************************************************************/

#include <deuligne/deuligne.h>
#include <ds1307/ds1307.h>
#include <twi/twi.h>
#include <usart/usart0.h>
#include <useful/datetime.h>

#include <avr/io.h>
#include <util/delay.h>

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/******************************************************************************
 * Private function prototypes.
 ******************************************************************************/

/**************************************************************************//**
 * \fn static void clock__transmit_string(const char* p_string)
 *
 * \brief Transmit a string through USART.
 *
 * \param[in]   p_string  String to transmit.
 ******************************************************************************/
static
void
clock__transmit_string
(
    const char* p_string
);

/******************************************************************************
 * Main function.
 ******************************************************************************/

/**************************************************************************//**
 * \fn int main(void)
 *
 * \brief Main function.
 *
 * \return 0
 ******************************************************************************/
int main(void)
{
    // Initialize USART0.
    usart0__initialize(NULL);

    // Enable transmitter.
    usart0__enable_transmitter();

    // Initialize TWI.
    twi__initialize(DS1307__CLOCK_RATE);

    // Initialize RTC.
    ds1307__initialize();

    // Declare some variables.
    datetime__time_t time;
    ds1307__hour_mode_t hour_mode;
    datetime__date_t date;

    // Initialize Deuligne and configure display.
    deuligne__initialize();
    deuligne__set_display(true, false, false);

    // Switch on backlight.
    deuligne__switch_on_backlight();

    for (;;)
    {
        // Get RTC time.
        ds1307__get_time(&time, &hour_mode);

        // Get RTC date.
        ds1307__get_date(&date);

        char str_date[] = "dd/mm/yy";
        snprintf
        (
            str_date,
            strlen(str_date) + 1,
            "%02u/%02u/%02u",
            date.date,
            date.month,
            date.year
        );

        char str_time[] = "hh:mm:ss";
        snprintf
        (
            str_time,
            strlen(str_time) + 1,
            "%02u:%02u:%02u",
            time.hours,
            time.minutes,
            time.seconds
        );

        clock__transmit_string(&(str_date[0]));
        usart0__transmit_byte(' ');
        clock__transmit_string(&(str_time[0]));
        usart0__transmit_byte('\n');

        deuligne__set_cursor_position(DEULIGNE__DISPLAY_LINE_1, 0);
        deuligne__write_string(str_date);

        deuligne__set_cursor_position(DEULIGNE__DISPLAY_LINE_2, 0);
        deuligne__write_string(str_time);

        _delay_ms(1000);
    }

    return 0;
}

/******************************************************************************
 * Private function definitions.
 ******************************************************************************/

/**************************************************************************//**
 * \fn static void clock__transmit_string(const char* p_string)
 *
 * \brief Transmit a string through USART.
 *
 * \param[in]   p_string  String to transmit.
 ******************************************************************************/
static
void
clock__transmit_string
(
    const char* p_string
){
    // Check the preconditions.
    assert(NULL != p_string);

    while (*p_string != '\0')
    {
        usart0__transmit_byte(*p_string);
        p_string++;
    }
}