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      1 /*
      2  * Author: Stefan Andritoiu <stefan.andritoiu (at) intel.com>
      3  * Copyright (c) 2015 Intel Corporation.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining
      6  * a copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sublicense, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be
     14  * included in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 //NOT TESTED!!!
     26 public class DS1307Sample {
     27 
     28 	static {
     29 		try {
     30 			System.loadLibrary("javaupm_ds1307");
     31 		} catch (UnsatisfiedLinkError e) {
     32 			System.err.println("error in loading native library");
     33 			System.exit(-1);
     34 		}
     35 	}
     36 
     37 	static private void printTime(upm_ds1307.DS1307 rtc) {
     38 		System.out.print("The time is: " + rtc.getMonth() + "/" + rtc.getDayOfMonth() + "/"
     39 				+ rtc.getYear() + " " + rtc.getHours() + ":" + rtc.getMinutes() + ":"
     40 				+ rtc.getSeconds());
     41 
     42 		if (rtc.getAmPmMode()) {
     43 			if (rtc.getAmPmMode())
     44 				System.out.print(" PM");
     45 			else
     46 				System.out.print(" AM");
     47 		}
     48 
     49 		System.out.println();
     50 
     51 		if (rtc.getAmPmMode())
     52 			System.out.println("Clock is in AM/PM mode");
     53 		else
     54 			System.out.println("Clock is in 24h mode");
     55 
     56 	}
     57 
     58 	public static void main(String[] args) throws InterruptedException {
     59 		// ! [Interesting]
     60 		// Instantiate a DS1037 on I2C bus 0
     61 		upm_ds1307.DS1307 rtc = new upm_ds1307.DS1307(0);
     62 
     63 		// always do this first
     64 		System.out.println("Loading the current time...");
     65 		if (!rtc.loadTime()) {
     66 			System.err.println("rtc->loadTime() failed.");
     67 			System.exit(-1);
     68 		}
     69 
     70 		printTime(rtc);
     71 
     72 		// set the year as an example
     73 		System.out.println("setting the year to 50");
     74 		rtc.setYear(50);
     75 		rtc.setTime();
     76 
     77 		// reload the time and print it
     78 		rtc.loadTime();
     79 		printTime(rtc);
     80 
     81 		// ! [Interesting]
     82 	}
     83 }