main.c

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/***
 * This file is part of OpenHome, an open source home automation system.
 * Copyright (C) 2003 Jan Klötzke
 *
 * 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) any later version.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <avr/io.h>
#include <avr/signal.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include <inttypes.h>
#include "main/keys.h"
#include "main/lcd.h"
#include "main/rom.h"
#include "net/link.h"
#include "net/transport.h"
#include "net/application.h"
#include "net/presentation.h"
#include "delay.h"
#include "main/menu.h"
#include "main/dcf77.h"

static uint8_t timer_flag, timer;
static uint16_t backlight;

INTERRUPT(SIG_OUTPUT_COMPARE2)
{       
        timer++;
        timer_flag++;
        keys_sense_keys();
        
        // manage backlight
        if (keys_key_pressed()) {
                backlight = 10000;
                lcd_enable_backlight();
        }
        if (backlight > 0) {
                backlight--;
                if (backlight == 0) lcd_disable_backlight();
        }
}

void print_hex(uint8_t value, uint8_t x, uint8_t y)
{
        uint8_t buf[3];
        uint8_t hex[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
        
        buf[0] = hex[value >> 4];
        buf[1] = hex[value & 0x0f];
        buf[2] = 0x00;
        lcd_print(x, y, 0, buf);
}



void print_time(void)
{
        struct snt_time_stamp t;
        
        dcf_get_time(&t);
        print_hex(t.hour, 0, 0);
        print_hex(t.minute, 10, 0);
        print_hex(t.second, 20, 0);
}


int main(void)
{
        // configure io-pins
        PORTE = 0x05;
        DDRD  = 0xff;
        DDRE  = 0x3e;
        
        // init subsystems
        sei();
        lcd_init();
        lnk_init();
        app_init();
        dcf_init();
        
        // configure timer 2 to 1ms
        // use compare match, prescaler to CLK/64
        OCR2 = 0x5d;
        TCCR2 = _BV(CTC2) | _BV(CS21) | _BV(CS20);
        sbi(TIMSK, OCIE2);

        keys_set_leds(0xff);

        lcd_activate();
        lcd_disable_backlight();
        
        menu_init();
        
        for (;;) {
                while (timer_flag) {
                        timer_flag--;
                        tsp_check_timeout();
                }
                lnk_process();
                tsp_process();
                app_process();
                menu_process();
                dcf_process();
                
                if (timer == 0) print_time();
        }
        return 0;
}

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