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-/*
- Cosm sensor client with Strings
-
- This sketch connects an analog sensor to Cosm (http://www.cosm.com)
- using a Wiznet Ethernet shield. You can use the Arduino Ethernet shield, or
- the Adafruit Ethernet shield, either one will work, as long as it's got
- a Wiznet Ethernet module on board.
-
- This example has been updated to use version 2.0 of the Cosm.com API.
- To make it work, create a feed with two datastreams, and give them the IDs
- sensor1 and sensor2. 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
- * Ethernet shield attached to pins 10, 11, 12, 13
-
- created 15 March 2010
- modified 9 Apr 2012
- by Tom Igoe with input from Usman Haque and Joe Saavedra
-
- http://arduino.cc/en/Tutorial/CosmClientString
- This code is in the public domain.
-
- */
-
-#include <SPI.h>
-#include <Ethernet.h>
-
-
-/#define APIKEY "YOUR API KEY GOES HERE" // replace your Cosm api key here
-#define FEEDID 00000 // replace your feed ID
-#define USERAGENT "My Project" // user agent is the project name
-
-
-// assign a MAC address for the ethernet controller.
-// fill in your address here:
- byte mac[] = {
- 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
-
-// fill in an available IP address on your network here,
-// for manual configuration:
-IPAddress ip(10,0,1,20);
-
-// initialize the library instance:
-EthernetClient 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(216,52,233,121); // numeric IP for api.cosm.com
-//char server[] = "api.cosm.com"; // name address for Cosm 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 Cosm.com
-
-void setup() {
- // Open serial communications and wait for port to open:
- Serial.begin(9600);
- while (!Serial) {
- ; // wait for serial port to connect. Needed for Leonardo only
- }
-
-
- // give the ethernet module time to boot up:
- delay(1000);
- // start the Ethernet connection:
- if (Ethernet.begin(mac) == 0) {
- Serial.println("Failed to configure Ethernet using DHCP");
- // DHCP failed, so use a fixed IP address:
- Ethernet.begin(mac, ip);
- }
-}
-
-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
- // Cosm 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.cosm.com");
- client.print("X-CosmApiKey: ");
- 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();
-}
-