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+/*
+  ReadATweet
+
+  Demonstrates retrieving the most recent Tweet from a user's home timeline 
+  using the Temboo Arduino Yun SDK.
+
+  Check out the latest Arduino & Temboo examples and support docs at http://www.temboo.com/arduino
+
+  A Temboo account and application key are necessary to run all Temboo examples. 
+  If you don't already have one, you can register for a free Temboo account at 
+  http://www.temboo.com
+
+  In order to run this sketch, you'll need to register an application using
+  the Twitter dev console at https://dev.twitter.com. After creating the 
+  app, you'll find OAuth credentials for that application under the "OAuth Tool" tab. 
+  Substitute these values for the placeholders below. 
+
+  This example assumes basic familiarity with Arduino sketches, and that your Yun 
+  is connected to the Internet.
+
+  Looking for social APIs? We've got Facebook, Google+, Instagram, Tumblr and more.
+  
+  This example code is in the public domain.
+*/
+
+#include <Bridge.h>
+#include <Console.h>
+#include <FileIO.h>
+#include <HttpClient.h>
+#include <Process.h>
+#include "TembooAccount.h" // contains Temboo account information
+                           // as described in the footer comment below
+
+/*** SUBSTITUTE YOUR VALUES BELOW: ***/
+
+const String TWITTER_ACCESS_TOKEN = "your-twitter-access-token";
+const String TWITTER_ACCESS_TOKEN_SECRET = "your-twitter-access-token-secret";
+const String TWITTER_CONSUMER_KEY = "your-twitter-consumer-key";
+const String TWITTER_CONSUMER_SECRET = "your-twitter-consumer-secret";
+
+int numRuns = 0;   // execution count, so this sketch doesn't run forever
+int maxRuns = 10;  // the max number of times the Twitter HomeTimeline Choreo should run
+
+void setup() {
+  Serial.begin(9600);
+  
+  // for debugging, wait until a serial console is connected
+  delay(4000);
+  while(!Serial);
+  Bridge.begin();
+}
+
+void loop()
+{
+  // while we haven't reached the max number of runs...
+  if (numRuns < maxRuns) {
+
+    // print status
+    Serial.println("Running ReadATweet - Run #" + String(numRuns++) + "...");
+
+    // define the Process that will be used to call the "temboo" client            
+    Process HomeTimelineChoreo;
+    
+    // invoke the Temboo client
+    HomeTimelineChoreo.begin("temboo");
+    
+    // set Temboo account credentials
+    HomeTimelineChoreo.addParameter("-a");
+    HomeTimelineChoreo.addParameter(TEMBOO_ACCOUNT);
+    HomeTimelineChoreo.addParameter("-u");
+    HomeTimelineChoreo.addParameter(TEMBOO_APP_KEY_NAME);
+    HomeTimelineChoreo.addParameter("-p");
+    HomeTimelineChoreo.addParameter(TEMBOO_APP_KEY);
+    
+    // tell the Temboo client which Choreo to run (Twitter > Timelines > HomeTimeline)
+    HomeTimelineChoreo.addParameter("-c");
+    HomeTimelineChoreo.addParameter("/Library/Twitter/Timelines/HomeTimeline");
+
+    // set the required choreo inputs
+    // see https://www.temboo.com/library/Library/Twitter/Timelines/HomeTimeline/
+    // for complete details about the inputs for this Choreo
+
+    HomeTimelineChoreo.addParameter("-i");
+    HomeTimelineChoreo.addParameter("Count:1");  // the max number of Tweets to return from each request
+   
+    // add the Twitter account information
+    HomeTimelineChoreo.addParameter("-i");
+    HomeTimelineChoreo.addParameter("AccessToken:" + TWITTER_ACCESS_TOKEN);
+    HomeTimelineChoreo.addParameter("-i");
+    HomeTimelineChoreo.addParameter("AccessTokenSecret:" + TWITTER_ACCESS_TOKEN_SECRET);
+    HomeTimelineChoreo.addParameter("-i");
+    HomeTimelineChoreo.addParameter("ConsumerSecret:" + TWITTER_CONSUMER_SECRET);
+    HomeTimelineChoreo.addParameter("-i");
+    HomeTimelineChoreo.addParameter("ConsumerKey:" + TWITTER_CONSUMER_KEY);
+   
+    // next, we'll define two output filters that let us specify the 
+    // elements of the response from Twitter that we want to receive.
+    // see the examples at http://www.temboo.com/arduino
+    // for more on using output filters
+   
+    // we want the text of the tweet
+    HomeTimelineChoreo.addParameter("-o");
+    HomeTimelineChoreo.addParameter("tweet:/[1]/text:Response");
+    
+    // and the name of the author
+    HomeTimelineChoreo.addParameter("-o");
+    HomeTimelineChoreo.addParameter("author:/[1]/user/screen_name:Response");
+
+
+    // tell the Process to run and wait for the results. The 
+    // return code (rc) will tell us whether the Temboo client 
+    // was able to send our request to the Temboo servers
+    unsigned int rc = HomeTimelineChoreo.run();
+    
+    // a response code of 0 means success; print the API response
+    if(rc == 0) {
+      
+      String author; // a String to hold the tweet author's name
+      String tweet; // a String to hold the text of the tweet
+
+
+      // choreo outputs are returned as key/value pairs, delimited with 
+      // newlines and record/field terminator characters, for example:
+      // Name1\n\x1F
+      // Value1\n\x1E
+      // Name2\n\x1F
+      // Value2\n\x1E      
+      
+      // see the examples at http://www.temboo.com/arduino for more details
+      // we can read this format into separate variables, as follows:
+      
+      while(HomeTimelineChoreo.available()) {
+        // read the name of the output item
+        String name = HomeTimelineChoreo.readStringUntil('\x1F');
+        name.trim();
+
+        // read the value of the output item
+        String data = HomeTimelineChoreo.readStringUntil('\x1E');
+        data.trim();
+
+        // assign the value to the appropriate String
+        if (name == "tweet") {
+          tweet = data;
+        } else if (name == "author") {
+          author = data;
+        }
+      }
+     
+      Serial.println("@" + author + " - " + tweet);
+    
+    } else {
+      // there was an error
+      // print the raw output from the choreo
+      while(HomeTimelineChoreo.available()) {
+        Serial.print((char)HomeTimelineChoreo.read());
+      }
+    }
+
+    HomeTimelineChoreo.close();
+  }
+
+  Serial.println("Sleeping...");
+  Serial.println("");
+  delay(90000); // sleep 90 seconds between HomeTimeline calls
+}
+
+/*
+  IMPORTANT NOTE: TembooAccount.h:
+
+  TembooAccount.h is a file referenced by this sketch that contains your Temboo account information. 
+  You need to create this file. To do so, make a new tab in Arduino, call it TembooAccount.h, and 
+  include the following variables and constants:
+
+  #define TEMBOO_ACCOUNT "myTembooAccountName"  // your Temboo account name 
+  #define TEMBOO_APP_KEY_NAME "myFirstApp"  // your Temboo app key name
+  #define TEMBOO_APP_KEY  "xxx-xxx-xxx-xx-xxx"  // your Temboo app key
+
+  The same TembooAccount.h file settings can be used for all Temboo SDK sketches.
+
+  You can find your Temboo App Key information on the Temboo website, 
+  under My Account > Application Keys
+
+  Keeping your account information in a separate file means you can save it once, 
+  then just distribute the main .ino file without worrying that you forgot to delete your credentials.
+*/