/* Wifi Pachube sensor client with Strings This sketch connects an analog sensor to Pachube (http://www.pachube.com) using a Arduino Wifi shield. This example is written for a network using WPA encryption. For WEP or WPA, change the Wifi.begin() call accordingly. This example has been updated to use version 2.0 of the Pachube.com API. To make it work, create a feed with a datastream, and give it the ID sensor1. Or change the code below to match your feed. This example uses the String library, which is part of the Arduino core from version 0019. Circuit: * Analog sensor attached to analog in 0 * Wifi shield attached to pins 10, 11, 12, 13 created 16 Mar 2012 modified 23 Apr 2012 by Tom Igoe This code is in the public domain. */ #include #include #define APIKEY "YOUR API KEY GOES HERE" // replace your pachube api key here #define FEEDID 00000 // replace your feed ID #define USERAGENT "My Arduino Project" // user agent is the project name char ssid[] = "yourNetwork"; // your network SSID (name) char pass[] = "secretPassword"; // your network password int status = WL_IDLE_STATUS; // initialize the library instance: WiFiClient client; // if you don't want to use DNS (and reduce your sketch size) // use the numeric IP instead of the name for the server: //IPAddress server(216,52,233,122); // numeric IP for api.pachube.com char server[] = "api.pachube.com"; // name address for pachube API unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds boolean lastConnected = false; // state of the connection last time through the main loop const unsigned long postingInterval = 10*1000; //delay between updates to Pachube.com void setup() { // start serial port: Serial.begin(9600); // attempt to connect to Wifi network: while ( status != WL_CONNECTED) { Serial.print("Attempting to connect to SSID: "); Serial.println(ssid); status = WiFi.begin(ssid, pass); // wait 10 seconds for connection: delay(10000); } // you're connected now, so print out the status: printWifiStatus(); } void loop() { // read the analog sensor: int sensorReading = analogRead(A0); // convert the data to a String to send it: String dataString = "sensor1,"; dataString += sensorReading; // you can append multiple readings to this String if your // pachube feed is set up to handle multiple values: int otherSensorReading = analogRead(A1); dataString += "\nsensor2,"; dataString += otherSensorReading; // if there's incoming data from the net connection. // send it out the serial port. This is for debugging // purposes only: if (client.available()) { char c = client.read(); Serial.print(c); } // if there's no net connection, but there was one last time // through the loop, then stop the client: if (!client.connected() && lastConnected) { Serial.println(); Serial.println("disconnecting."); client.stop(); } // if you're not connected, and ten seconds have passed since // your last connection, then connect again and send data: if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) { sendData(dataString); } // store the state of the connection for next time through // the loop: lastConnected = client.connected(); } // this method makes a HTTP connection to the server: void sendData(String thisData) { // if there's a successful connection: if (client.connect(server, 80)) { Serial.println("connecting..."); // send the HTTP PUT request: client.print("PUT /v2/feeds/"); client.print(FEEDID); client.println(".csv HTTP/1.1"); client.println("Host: api.pachube.com"); client.print("X-PachubeApiKey: "); client.println(APIKEY); client.print("User-Agent: "); client.println(USERAGENT); client.print("Content-Length: "); client.println(thisData.length()); // last pieces of the HTTP PUT request: client.println("Content-Type: text/csv"); client.println("Connection: close"); client.println(); // here's the actual content of the PUT request: client.println(thisData); } else { // if you couldn't make a connection: Serial.println("connection failed"); Serial.println(); Serial.println("disconnecting."); client.stop(); } // note the time that the connection was made or attempted: lastConnectionTime = millis(); } void printWifiStatus() { // print the SSID of the network you're attached to: Serial.print("SSID: "); Serial.println(WiFi.SSID()); // print your WiFi shield's IP address: IPAddress ip = WiFi.localIP(); Serial.print("IP Address: "); Serial.println(ip); // print the received signal strength: long rssi = WiFi.RSSI(); Serial.print("signal strength (RSSI):"); Serial.print(rssi); Serial.println(" dBm"); }