main.c

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 * Copyright (C) 2015 Sensorian
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 * This file is part of Sensorian.                                          *
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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>        
#include "MCP79410.h"
#include "Utilities.h"
#include "i2c.h"

int main(int argc, char **argv)
{
    I2C_Initialize(MCP79410_ADDRESS);           //Initialize I2C and setup chip address
    
    if(MCP79410_IsRunning())    //If clock is already running stop it 
    {
        MCP79410_DisableOscillator();       
    }   
    MCP79410_Initialize();      //Initialize RTCC with system time and date 
    
    MCP79410_ClearInterruptFlag(ZERO);
    
    RTCC_Struct *current_time = (RTCC_Struct *) malloc(sizeof(RTCC_Struct));
    RTCC_Struct *alarm_time = (RTCC_Struct *) malloc(sizeof(RTCC_Struct));  
    RTCC_Struct user_alarm = {0, 28, 0, 0, 0, 0, 0};            //Change minutes value for match
    alarm_time = &user_alarm;
    
    MCP79410_SetAlarmTime(alarm_time,ZERO);             //Set alarm time
    MCP79410_SetAlarmMatch(MINUTES_MATCH,ZERO);         //Alarm ZERO will trigger on minutes match
    MCP79410_SetAlarmMFPPolarity(LOWPOL,ZERO);          //Configure Alarm pin polarity as HIGH
    MCP79410_SetMFP_Functionality(ALARM_INTERRUPT);     //Set alaram interrupt
    
    PinLevel_t pval = ReadPinStatus(MPL_PIN);
    printf("MPL pin level is %d\r\n",(unsigned char)pval);
            
    while(1)
    {
        AlarmStatus_t s = MCP79410_GetAlarmStatus(ZERO);        //Check alarm status 
        printf("Alarm interrupt status %d\r\n",(unsigned int)s);
        if(s != 0)
        {
            //Read alarm pin
            pval = ReadPinStatus(MPL_PIN);          //This works only when the RTCC operates from battery input. Otherwise the MPF pin will read 0 despite the 
            printf("MPL pin level is %d\r\n",(unsigned char)pval);  //fact that the interrupt will be active
            delay_ms(1000);
        }
        current_time = MCP79410_GetTime();
        printf("now: %d-%d-%d %d:%d:%d\n", current_time->year, current_time->month, current_time->date, current_time->hour, current_time->min, current_time->sec);      
        delay_ms(1000);
    }
    
    I2C_Close();                //Return I2C pins to default status

    return 0;
}