| /* | |
| Spacebrew String | |
| Demonstrates how to create a sketch that sends and receives strings | |
| to and from Spacebrew. Every time string data is received it | |
| is output to the Serial monitor. | |
| Make sure that your Yún is connected to the internet for this example | |
| to function properly. | |
| The circuit: | |
| - No circuit required | |
| created 2013 | |
| by Julio Terra | |
| This example code is in the public domain. | |
| More information about Spacebrew is available at: | |
| http://spacebrew.cc/ | |
| */ | |
| // create a variable of type SpacebrewYun and initialize it with the constructor | |
| SpacebrewYun sb = SpacebrewYun("spacebrewYun Strings", "String sender and receiver"); | |
| // create variables to manage interval between each time we send a string | |
| long last_time = 0; | |
| int interval = 2000; | |
| void setup() { | |
| // start the serial port | |
| SerialUSB.begin(57600); | |
| // for debugging, wait until a serial console is connected | |
| delay(4000); | |
| while (!SerialUSB) { | |
| ; | |
| } | |
| // start-up the bridge | |
| Bridge.begin(); | |
| // configure the spacebrew object to print status messages to serial | |
| sb.verbose(true); | |
| // configure the spacebrew publisher and subscriber | |
| sb.addPublish("speak", "string"); | |
| sb.addSubscribe("listen", "string"); | |
| // register the string message handler method | |
| sb.onStringMessage(handleString); | |
| // connect to cloud spacebrew server at "sandbox.spacebrew.cc" | |
| sb.connect("sandbox.spacebrew.cc"); | |
| } | |
| void loop() { | |
| // monitor spacebrew connection for new data | |
| sb.monitor(); | |
| // connected to spacebrew then send a string every 2 seconds | |
| if (sb.connected()) { | |
| // check if it is time to send a new message | |
| if ((millis() - last_time) > interval) { | |
| sb.send("speak", "is anybody out there?"); | |
| last_time = millis(); | |
| } | |
| } | |
| } | |
| // handler method that is called whenever a new string message is received | |
| void handleString(String route, String value) { | |
| // print the message that was received | |
| SerialUSB.print("From "); | |
| SerialUSB.print(route); | |
| SerialUSB.print(", received msg: "); | |
| SerialUSB.println(value); | |
| } | |