запуск платы Arduino по таймеру в случае сбоя RTC

Я пытаюсь запустить мою программу, либо таймер Arduino или RTC. псевдокод выглядит так

Если RTC не удалось
да: прочитайте время Arduino
еще: прочитайте время rtc

Мы можем определить, есть ли ошибка в RTC, так что мой вопрос в том, как запустить плату Arduino на время Arduino. От того, где она остановилась.

main.c

    #include "glob.h"#include "rtc.h"#include "config.h"
void setup()
{
Serial.begin(9600);
rtcSetup();
}
void loop()
{
getRTCDateTime();
convertUTCtoLocal();
Print_Date();
Print_Time();
RTC_Error_Check();
Serial.println("................................");
delay(1000);
}

void Print_Date(){
Serial.print("Local Date:");
Serial.print(local_day);
Serial.print("/");
Serial.print(local_month);
Serial.print("/");
Serial.println(local_year);
}
void Print_Time()
{ Serial.print("local_time is:");
Serial.print(local_h);
Serial.print("-");
Serial.print(local_m);
Serial.print("-");
Serial.println(local_s);}

config.h

#ifndef CONFIG_H
#define CONFIG_H

#define DEFAULT_TIMEZONE 5.5;//
#define USER_DATA //User set time in UTC
#define USER_DAY 3;
#define USER_MONTH 1;
#define USER_YEAR 2013;
#define USER_H 7;// MAKE IT AS 14
#define USER_M 32;// MAKE IT AS 30  FOR SETTING TIME TO 9.0
#define USER_S 0;
#endif

rtc.h

#ifndef RTC_H
#define RTC_Hvoid rtcSetup();
void getRTCDateTime();

#endif

rtc_c

#include "glob.h"#include "rtc.h"
#include "Wire.h"
void rtcSetup(){
Wire.begin();
}

#define DS1307_ADDRESS 0x68
byte zero = 0x00; //workaround for issue #527

void getRTCDateTime()
{

// Reset the register pointer
Wire.beginTransmission(DS1307_ADDRESS);
Wire.write(zero);
Wire.endTransmission();

Wire.requestFrom(DS1307_ADDRESS, 7);s = bcdToDec(Wire.read());
m = bcdToDec(Wire.read());
h = bcdToDec(Wire.read() & 0b111111); //24 hour time
wkDay = bcdToDec(Wire.read()); //0-6 -> sunday - Saturday
dd = bcdToDec(Wire.read());
mm = bcdToDec(Wire.read());}void rtc_write(){

Wire.beginTransmission(DS1307_ADDRESS);
Wire.write(zero); //stop Oscillator

Wire.write(decToBcd(s));
Wire.write(decToBcd(m));
Wire.write(decToBcd(h));
Wire.write(decToBcd(wkDay));
Wire.write(decToBcd(dd));
Wire.write(decToBcd(mm));
Wire.write(decToBcd(getLastTwoDigOfYear(yy)));

Wire.write(zero); //start

Wire.endTransmission();}

byte decToBcd(byte val){
// Convert normal decimal numbers to binary coded decimal
return ( (val/10*16) + (val%10) );
}

byte bcdToDec(byte val)  {
// Convert binary coded decimal to normal decimal numbers
return ( (val/16*10) + (val%16) );
}

int getLastTwoDigOfYear(int y){
return(y%1000);
}

void getuserdate()
{
byte s = 45; //0-59
byte m =47; //0-59
byte h =15; //0-23
byte wkDay =2; //1-7
byte dd =20;byte mm =       3; //1-12
byte yy  =       13; //0-99

}

calc.h

#ifndef CALC_H
#define CALC_Hvoid calcTime();
void convertSecondsToLocalHMS(int secs);
void convertUTCtoLocal();

static int MNTH_DAYS[12]={
31,28,31,30,31,30,31,31,30,31,30,31};

#endif

calc_time.c

#include"timecalc.h"
#include"config.h"#include "glob.h"#include "rtc.h"#include "Time.h"#include<math.h>

static long tzone_offset_s = tzone*3600UL;void calcTime(){
#ifndef USER_DATA

getRTCDateTime();

#else
getDefaultDateTime();
#endifconvertUTCtoLocal();
hdec = local_h + float(local_m)/60;//hours in decimal

}void getDefaultDateTime(){

Serial.println("DEFAULT DATE AND TIME IS USING");
latitude = DEFAULT_LATITUDE;
longitude = DEFAULT_LONGITUDE;
mm = USER_MONTH;
yy = USER_YEAR;
dd = USER_DAY;
h = USER_H;
m = USER_M;
s = USER_S;
}

void convertUTCtoLocal(){

long no_s_day_start= h*3600UL + m*60 + s; //no of seconds since day start
long day_change_cutoff_s = 86400UL-tzone_offset_s;//max utc before changing date

long additional_s;//additional seconds after day change

local_year = yy;

if(no_s_day_start>day_change_cutoff_s){
if(dd+1 > MNTH_DAYS[mm-1]){
local_day = 1;
if(mm==12){
local_month=1;
local_year = yy+1;
}
else
local_month = mm+1;
}
else{
local_day=dd+1;
local_month=mm;
}

additional_s = no_s_day_start - day_change_cutoff_s;
convertSecondsToLocalHMS(additional_s);

}
else{
local_day = dd;
local_month = mm;
convertSecondsToLocalHMS(no_s_day_start+tzone_offset_s);
}}void convertSecondsToLocalHMS(long secs){

local_h = secs/3600; //hour
local_m=(secs%3600)/60;//min
local_s = secs - local_h*3600UL - local_m*60;
}int sign(int v)
{
return v >= 0 ? 1 : -1;
}

diag.h

#ifndef DIAG_H
#define DIAG_H

static int Error_count;
static int RTC_ERROR;
void RTC_Error_Check();
static int ph;
static int pm;
static int ps;
static int start_time;
static int p_time;
static int rtcwrite_count;

#endif

diag.c

#include"glob.h"#include"rtc.h"#include"diag.h"void RTC_Error_Check()
{
int count=0;
Serial.println("take reading fun called");
ph=h;
pm=m;
ps=s;
RTC_ERROR=Check_RTC();
if(RTC_ERROR=0)
{
Error_count=0;
}else
{
Error_count=Error_count+1;
}

if(Error_count==6)
{
Get_Ard_time();ps=ps+1;
}}

void Get_Ard_time()
{
ph=h;
pm=m;
ps=s;
start_time=(3600*h)+(60*m)+s;

Serial.println("start time is:");
Serial.println(start_time);
Serial.println("previous time is:");
Serial.println(p_time);
if(start_time==p_time)
{
h=ph;

m=pm;

s=ps;
if(s>59)
{s=0;
m=m+1;
}
if(m>59)
{ m=0;
h=h+1;
}
if(h>23)
{
h=0;}
rtcWrite();
p_time=start_time;
}else
{
getRTCDateTime();

}

}