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+/*
+  SendDataToGoogleSpreadsheet
+
+  Demonstrates appending a row of data to a Google spreadsheet using Temboo from an Arduino Yun.
+
+  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
+
+  Since this sketch uses a Google spreadsheet, you'll also need a 
+  Google account: substitute the placeholders below for your Google account values.
+
+  This example assumes basic familiarity with Arduino sketches, and that your 
+  Yun is connected to the Internet.
+
+  The columns in your spreadsheet must have labels for the Choreo to
+  work properly. It doesn't matter what the column labels actually are,
+  but there must be text in the first row of each column. This example
+  assumes there are two columns. The first column is the time (in milliseconds)
+  that the row was appended, and the second column is a sensor value.
+  In other words, your spreadsheet should look like:
+  
+  Time  |  Sensor Value  |     
+  ------+-----------------
+        |                |
+  
+  NOTE that the first time you run this sketch, you may receive a warning from
+  Google, prompting you to authorize access from a 3rd party system.
+  
+  Looking for another API to use with your Arduino Yun? We've got over 100 in our Library!
+
+  This example code is in the public domain.
+
+*/
+
+#include <Bridge.h>
+#include <Temboo.h>
+#include "TembooAccount.h" // contains Temboo account information, 
+                           // as described in the footer comment below
+
+
+/*** SUBSTITUTE YOUR VALUES BELOW: ***/
+
+// Note that for additional security and reusability, you could
+// use #define statements to specify these values in a .h file.
+
+const String GOOGLE_USERNAME = "your-google-username";
+const String GOOGLE_PASSWORD = "your-google-password";
+
+// the title of the spreadsheet you want to send data to
+// (Note that this must actually be the title of a Google spreadsheet
+// that exists in your Google Drive/Docs account, and is configured
+// as described above.)
+const String SPREADSHEET_TITLE = "your-spreadsheet-title";
+
+const unsigned long RUN_INTERVAL_MILLIS = 60000; // how often to run the Choreo (in milliseconds)
+
+// the last time we ran the Choreo 
+// (initialized to 60 seconds ago so the
+// Choreo is run immediately when we start up)
+unsigned long lastRun = (unsigned long)-60000;
+
+void setup() {
+  
+  // for debugging, wait until a serial console is connected
+  Serial.begin(9600);
+  delay(4000);
+  while(!Serial);
+
+  Serial.print("Initializing the bridge...");
+  Bridge.begin();
+  Serial.println("Done");
+}
+
+void loop()
+{
+  // get the number of milliseconds this sketch has been running
+  unsigned long now = millis();
+
+  // run again if it's been 60 seconds since we last ran
+  if (now - lastRun >= RUN_INTERVAL_MILLIS) {
+
+    // remember 'now' as the last time we ran the choreo
+    lastRun = now;
+    
+    Serial.println("Getting sensor value...");
+
+    // get the value we want to append to our spreadsheet
+    unsigned long sensorValue = getSensorValue();
+
+    Serial.println("Appending value to spreadsheet...");
+
+    // we need a Process object to send a Choreo request to Temboo
+    TembooChoreo AppendRowChoreo;
+
+    // invoke the Temboo client
+    // NOTE that the client must be reinvoked and repopulated with
+    // appropriate arguments each time its run() method is called.
+    AppendRowChoreo.begin();
+    
+    // set Temboo account credentials
+    AppendRowChoreo.setAccountName(TEMBOO_ACCOUNT);
+    AppendRowChoreo.setAppKeyName(TEMBOO_APP_KEY_NAME);
+    AppendRowChoreo.setAppKey(TEMBOO_APP_KEY);
+    
+    // identify the Temboo Library choreo to run (Google > Spreadsheets > AppendRow)
+    AppendRowChoreo.setChoreo("/Library/Google/Spreadsheets/AppendRow");
+    
+    // set the required Choreo inputs
+    // see https://www.temboo.com/library/Library/Google/Spreadsheets/AppendRow/ 
+    // for complete details about the inputs for this Choreo
+    
+    // your Google username (usually your email address)
+    AppendRowChoreo.addInput("Username", GOOGLE_USERNAME);
+
+    // your Google account password
+    AppendRowChoreo.addInput("Password", GOOGLE_PASSWORD);
+
+    // the title of the spreadsheet you want to append to
+    // NOTE: substitute your own value, retaining the "SpreadsheetTitle:" prefix.
+    AppendRowChoreo.addInput("SpreadsheetTitle", SPREADSHEET_TITLE);
+
+    // convert the time and sensor values to a comma separated string
+    String rowData(now);
+    rowData += ",";
+    rowData += sensorValue;
+
+    // add the RowData input item
+    AppendRowChoreo.addInput("RowData", rowData);
+
+    // run the Choreo and wait for the results
+    // The return code (returnCode) will indicate success or failure 
+    unsigned int returnCode = AppendRowChoreo.run();
+
+    // return code of zero (0) means success
+    if (returnCode == 0) {
+      Serial.println("Success! Appended " + rowData);
+      Serial.println("");
+    } else {
+      // return code of anything other than zero means failure  
+      // read and display any error messages
+      while (AppendRowChoreo.available()) {
+        char c = AppendRowChoreo.read();
+        Serial.print(c);
+      }
+    }
+
+    AppendRowChoreo.close();
+  }
+}
+
+// this function simulates reading the value of a sensor 
+unsigned long getSensorValue() {
+  return analogRead(A0);
+}
+
+/*
+  IMPORTANT NOTE: TembooAccount.h:
+
+  TembooAccount.h is a file referenced by this sketch that contains your Temboo account information.
+  You'll need to edit the placeholder version of TembooAccount.h included with this example sketch,
+  by inserting your own Temboo account name and app key information. The contents of the file should
+  look like:
+
+  #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
+
+  You can find your Temboo App Key information on the Temboo website, 
+  under My Account > Application Keys
+
+  The same TembooAccount.h file settings can be used for all Temboo SDK sketches.
+
+  Keeping your account information in a separate file means you can share the main .ino file without worrying 
+  that you forgot to delete your credentials.
+*/