Arduino Yún Time Check

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1Process date;
2int hours, minutes, seconds;
3int lastSecond = -1;

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1void setup() {
2
3  Bridge.begin();
4
5  Serial.begin(9600);
6
7  while(!Serial);
8
9  Serial.println("Time Check");

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1if (!date.running())  {
2
3    date.begin("date");
4
5    date.addParameter("+%T");
6
7    date.run();
8
9  }
10}

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1void loop() {
2
3  if(lastSecond != seconds) {  // if a second has passed
4
5    if (hours <= 9) Serial.print("0");    // adjust for 0-9
6
7    Serial.print(hours);
8
9    Serial.print(":");
10
11    if (minutes <= 9) Serial.print("0");  // adjust for 0-9
12
13    Serial.print(minutes);
14
15    Serial.print(":");
16
17    if (seconds <= 9) Serial.print("0");  // adjust for 0-9
18
19    Serial.println(seconds);
20
21    if (!date.running())  {
22
23      date.begin("date");
24
25      date.addParameter("+%T");
26
27      date.run();
28
29    }
30
31  }

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1while (date.available()>0) {
2
3    String timeString = date.readString();
4
5    int firstColon = timeString.indexOf(":");
6
7    int secondColon= timeString.lastIndexOf(":");

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1String hourString = timeString.substring(0, firstColon);
2
3    String minString = timeString.substring(firstColon+1, secondColon);
4
5    String secString = timeString.substring(secondColon+1);

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1hours = hourString.toInt();
2
3    minutes = minString.toInt();
4
5    lastSecond = seconds;
6
7    seconds = secString.toInt();
8
9  }
10}

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1/*
2
3  Time Check
4
5 Gets the time from Linux via Bridge then parses out hours,
6
7 minutes and seconds using a YunShield/Yún.
8
9 created  27 May 2013
10
11 modified 21 June 2013
12
13 By Tom Igoe
14
15 This example code is in the public domain.
16
17 http://www.arduino.cc/en/Tutorial/TimeCheck
18
19 */
20
21#include <Process.h>
22
23Process date;                 // process used to get the date
24int hours, minutes, seconds;  // for the results
25int lastSecond = -1;          // need an impossible value for comparison
26
27void setup() {
28
29  Bridge.begin();        // initialize Bridge
30
31  SerialUSB.begin(9600);    // initialize serial
32
33  while (!Serial);              // wait for Serial Monitor to open
34
35  SerialUSB.println("Time Check");  // Title of sketch
36
37  // run an initial date process. Should return:
38
39  // hh:mm:ss :
40
41  if (!date.running()) {
42
43    date.begin("date");
44
45    date.addParameter("+%T");
46
47    date.run();
48
49  }
50}
51
52void loop() {
53
54  if (lastSecond != seconds) { // if a second has passed
55
56    // print the time:
57
58    if (hours <= 9) {
59
60      SerialUSB.print("0");  // adjust for 0-9
61
62    }
63
64    SerialUSB.print(hours);
65
66    SerialUSB.print(":");
67
68    if (minutes <= 9) {
69
70      SerialUSB.print("0");  // adjust for 0-9
71
72    }
73
74    SerialUSB.print(minutes);
75
76    SerialUSB.print(":");
77
78    if (seconds <= 9) {
79
80      SerialUSB.print("0");  // adjust for 0-9
81
82    }
83
84    SerialUSB.println(seconds);
85
86    // restart the date process:
87
88    if (!date.running()) {
89
90      date.begin("date");
91
92      date.addParameter("+%T");
93
94      date.run();
95
96    }
97
98  }
99
100  //if there's a result from the date process, parse it:
101
102  while (date.available() > 0) {
103
104    // get the result of the date process (should be hh:mm:ss):
105
106    String timeString = date.readString();
107
108    // find the colons:
109
110    int firstColon = timeString.indexOf(":");
111
112    int secondColon = timeString.lastIndexOf(":");
113
114    // get the substrings for hour, minute second:
115
116    String hourString = timeString.substring(0, firstColon);
117
118    String minString = timeString.substring(firstColon + 1, secondColon);
119
120    String secString = timeString.substring(secondColon + 1);
121
122    // convert to ints,saving the previous second:
123
124    hours = hourString.toInt();
125
126    minutes = minString.toInt();
127
128    lastSecond = seconds;          // save to do a time comparison
129
130    seconds = secString.toInt();
131
132  }
133
134}