[136] | 1 | /*
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| 2 | Time Check
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| 3 |
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| 4 | Gets the time from Linux via Bridge then parses out hours,
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| 5 | minutes and seconds for the Arduino using an Arduino Y炭n.
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| 6 |
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| 7 | created 27 May 2013
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| 8 | modified 21 June 2013
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| 9 | By Tom Igoe
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| 10 |
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| 11 | This example code is in the public domain.
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| 12 |
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| 13 | http://arduino.cc/en/Tutorial/TimeCheck
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| 14 |
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| 15 | */
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| 16 |
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| 17 |
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| 18 | #include <Process.h>
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| 19 |
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| 20 | Process date; // process used to get the date
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| 21 | int hours, minutes, seconds; // for the results
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| 22 | int lastSecond = -1; // need an impossible value for comparison
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| 23 |
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| 24 | void setup() {
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| 25 | Bridge.begin(); // initialize Bridge
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| 26 | Serial.begin(9600); // initialize serial
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| 27 |
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| 28 | while (!Serial); // wait for Serial Monitor to open
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| 29 | Serial.println("Time Check"); // Title of sketch
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| 30 |
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| 31 | // run an initial date process. Should return:
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| 32 | // hh:mm:ss :
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| 33 | if (!date.running()) {
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| 34 | date.begin("date");
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| 35 | date.addParameter("+%T");
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| 36 | date.run();
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| 37 | }
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| 38 | }
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| 39 |
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| 40 | void loop() {
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| 41 |
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| 42 | if (lastSecond != seconds) { // if a second has passed
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| 43 | // print the time:
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| 44 | if (hours <= 9) Serial.print("0"); // adjust for 0-9
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| 45 | Serial.print(hours);
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| 46 | Serial.print(":");
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| 47 | if (minutes <= 9) Serial.print("0"); // adjust for 0-9
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| 48 | Serial.print(minutes);
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| 49 | Serial.print(":");
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| 50 | if (seconds <= 9) Serial.print("0"); // adjust for 0-9
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| 51 | Serial.println(seconds);
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| 52 |
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| 53 | // restart the date process:
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| 54 | if (!date.running()) {
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| 55 | date.begin("date");
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| 56 | date.addParameter("+%T");
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| 57 | date.run();
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| 58 | }
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| 59 | }
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| 60 |
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| 61 | //if there's a result from the date process, parse it:
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| 62 | while (date.available() > 0) {
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| 63 | // get the result of the date process (should be hh:mm:ss):
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| 64 | String timeString = date.readString();
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| 65 |
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| 66 | // find the colons:
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| 67 | int firstColon = timeString.indexOf(":");
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| 68 | int secondColon = timeString.lastIndexOf(":");
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| 69 |
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| 70 | // get the substrings for hour, minute second:
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| 71 | String hourString = timeString.substring(0, firstColon);
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| 72 | String minString = timeString.substring(firstColon + 1, secondColon);
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| 73 | String secString = timeString.substring(secondColon + 1);
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| 74 |
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| 75 | // convert to ints,saving the previous second:
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| 76 | hours = hourString.toInt();
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| 77 | minutes = minString.toInt();
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| 78 | lastSecond = seconds; // save to do a time comparison
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| 79 | seconds = secString.toInt();
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| 80 | }
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| 81 |
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| 82 | }
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