I'm using an RTC DS1307 to keep track of time for long periods. It seems to be stuck in a function. I'm using the RTClib suggested by adafruit. 

How can I get it unstuck and get values returned? Are there any debugging or troubleshooting tips that would be helpful?

Referencing this excerpt for the code I'm running.

```
void setup () {
  while (!Serial); // for Leonardo/Micro/Zero

  Serial.begin(57600);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (! rtc.isrunning()) { //// **Where I think my code errors.**
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
  }
}

```

This is the example code modified slightly to increase logging, included with RTClib. It's for the DS1307. 

Currently the output from the serial port is as follows:

> 
> RTC is found.
> 
> 
> 

I changed the code to the below:

```
    // Date and time functions using a DS1307 RTC connected via I2C and Wire lib
    #include <Wire.h>
    #include "RTClib.h"

    RTC_DS1307 rtc;

    char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

    void setup () {
      while (!Serial); // for Leonardo/Micro/Zero

      Serial.begin(9600);
      if (! rtc.begin()) {
        Serial.println("Couldn't find RTC");
        while (1);
      } else {
        Serial.println("RTC is found.");
      }

      if (! rtc.isrunning()) {
        Serial.println("RTC is NOT running!");
        // following line sets the RTC to the date & time this sketch was compiled
        // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
        // This line sets the RTC with an explicit date & time, for example to set
        // January 21, 2014 at 3am you would call:
        // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
      } else {
        Serial.println("RTC is RUNNING.");
      }
    }

    void loop () {
        DateTime now = rtc.now();

        Serial.print(now.year(), DEC);
        Serial.print('/');
        Serial.print(now.month(), DEC);
        Serial.print('/');
        Serial.print(now.day(), DEC);
        Serial.print(" (");
        Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
        Serial.print(") ");
        Serial.print(now.hour(), DEC);
        Serial.print(':');
        Serial.print(now.minute(), DEC);
        Serial.print(':');
        Serial.print(now.second(), DEC);
        Serial.println();

        Serial.print(" since midnight 1/1/1970 = ");
        Serial.print(now.unixtime());
        Serial.print("s = ");
        Serial.print(now.unixtime() / 86400L);
        Serial.println("d");

        // calculate a date which is 7 days and 30 seconds into the future
        DateTime future (now + TimeSpan(7,12,30,6));

        Serial.print(" now + 7d + 30s: ");
        Serial.print(future.year(), DEC);
        Serial.print('/');
        Serial.print(future.month(), DEC);
        Serial.print('/');
        Serial.print(future.day(), DEC);
        Serial.print(' ');
        Serial.print(future.hour(), DEC);
        Serial.print(':');
        Serial.print(future.minute(), DEC);
        Serial.print(':');
        Serial.print(future.second(), DEC);
        Serial.println();

        Serial.println();
        delay(3000);
    }

```