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+/*
+ Xively sensor client with Strings
+
+ This sketch connects an analog sensor to Xively,
+ using an Arduino Yún.
+
+ created 15 March 2010
+ updated 27 May 2013
+ by Tom Igoe
+
+ */
+
+// include all Libraries needed:
+#include <Process.h>
+#include "passwords.h" // contains my passwords, see below
+
+/*
+ NOTE: passwords.h is not included with this repo because it contains my passwords.
+ You need to create it for your own version of this application. To do so, make
+ a new tab in Arduino, call it passwords.h, and include the following variables and constants:
+
+ #define APIKEY "foo" // replace your pachube api key here
+ #define FEEDID 0000 // replace your feed ID
+ #define USERAGENT "my-project" // user agent is the project name
+ */
+
+
+// set up net client info:
+const unsigned long postingInterval = 60000; //delay between updates to xively.com
+unsigned long lastRequest = 0; // when you last made a request
+String dataString = "";
+
+void setup() {
+ // start serial port:
+ Bridge.begin();
+ Console.begin();
+
+ while(!Console); // wait for Network Console to open
+ Console.println("Xively client");
+
+ // Do a first update immediately
+ updateData();
+ sendData();
+ lastRequest = millis();
+}
+
+void loop() {
+ // get a timestamp so you can calculate reading and sending intervals:
+ long now = millis();
+
+ // if the sending interval has passed since your
+ // last connection, then connect again and send data:
+ if (now - lastRequest >= postingInterval) {
+ updateData();
+ sendData();
+ lastRequest = now;
+ }
+}
+
+void updateData() {
+ // convert the readings to a String to send it:
+ dataString = "Temperature,";
+ dataString += random(10) + 20;
+ // add pressure:
+ dataString += "\nPressure,";
+ dataString += random(5) + 100;
+}
+
+// this method makes a HTTP connection to the server:
+void sendData() {
+ // form the string for the API header parameter:
+ String apiString = "X-ApiKey: ";
+ apiString += APIKEY;
+
+ // form the string for the URL parameter:
+ String url = "https://api.xively.com/v2/feeds/";
+ url += FEEDID;
+ url += ".csv";
+
+ // Send the HTTP PUT request
+
+ // Is better to declare the Process here, so when the
+ // sendData function finishes the resources are immediately
+ // released. Declaring it global works too, BTW.
+ Process xively;
+ Console.print("\n\nSending data... ");
+ xively.begin("curl");
+ xively.addParameter("-k");
+ xively.addParameter("--request");
+ xively.addParameter("PUT");
+ xively.addParameter("--data");
+ xively.addParameter(dataString);
+ xively.addParameter("--header");
+ xively.addParameter(apiString);
+ xively.addParameter(url);
+ xively.run();
+ Console.println("done!");
+
+ // If there's incoming data from the net connection,
+ // send it out the Console:
+ while (xively.available()>0) {
+ char c = xively.read();
+ Console.write(c);
+ }
+
+}
+
+
+
+