File size: 2,085 Bytes
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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/
*/
#include <Bridge.h>
#include <SpacebrewYun.h>
// 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);
}
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