1 | /*
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2 | Spacebrew Range
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3 |
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4 | Demonstrates how to create a sketch that sends and receives analog
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5 | range value to and from Spacebrew. Every time the state of the
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6 | potentiometer (or other analog input component) change a spacebrew
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7 | message is sent. The sketch also accepts analog range messages from
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8 | other Spacebrew apps.
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9 |
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10 | Make sure that your Y炭n is connected to the internet for this example
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11 | to function properly.
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12 |
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13 | The circuit:
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14 | - Potentiometer connected to Y炭n. Middle pin connected to analog pin A0,
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15 | other pins connected to 5v and GND pins.
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16 |
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17 | created 2013
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18 | by Julio Terra
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19 |
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20 | This example code is in the public domain.
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21 |
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22 | More information about Spacebrew is available at:
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23 | http://spacebrew.cc/
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24 |
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25 | */
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26 |
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27 | #include <Bridge.h>
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28 | #include <SpacebrewYun.h>
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29 |
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30 | // create a variable of type SpacebrewYun and initialize it with the constructor
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31 | SpacebrewYun sb = SpacebrewYun("spacebrewYun Range", "Range sender and receiver");
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32 |
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33 | // variable that holds the last potentiometer value
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34 | int last_value = 0;
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35 |
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36 | // create variables to manage interval between each time we send a string
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37 | void setup() {
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38 |
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39 | // start the serial port
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40 | Serial.begin(57600);
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41 |
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42 | // for debugging, wait until a serial console is connected
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43 | delay(4000);
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44 | while (!Serial) { ; }
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45 |
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46 | // start-up the bridge
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47 | Bridge.begin();
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48 |
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49 | // configure the spacebrew object to print status messages to serial
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50 | sb.verbose(true);
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51 |
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52 | // configure the spacebrew publisher and subscriber
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53 | sb.addPublish("physical pot", "range");
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54 | sb.addSubscribe("virtual pot", "range");
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55 |
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56 | // register the string message handler method
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57 | sb.onRangeMessage(handleRange);
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58 |
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59 | // connect to cloud spacebrew server at "sandbox.spacebrew.cc"
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60 | sb.connect("sandbox.spacebrew.cc");
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61 | }
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62 |
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63 |
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64 | void loop() {
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65 | // monitor spacebrew connection for new data
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66 | sb.monitor();
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67 |
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68 | // connected to spacebrew then send a new value whenever the pot value changes
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69 | if ( sb.connected() ) {
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70 | int cur_value = analogRead(A0);
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71 | if ( last_value != cur_value ) {
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72 | sb.send("physical pot", cur_value);
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73 | last_value = cur_value;
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74 | }
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75 | }
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76 | }
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77 |
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78 | // handler method that is called whenever a new string message is received
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79 | void handleRange (String route, int value) {
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80 | // print the message that was received
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81 | Serial.print("From ");
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82 | Serial.print(route);
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83 | Serial.print(", received msg: ");
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84 | Serial.println(value);
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85 | }
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86 |
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