WaveForm

wave.ino

#include <SPI.h>
#include <Ethernet.h>



// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:

byte mac[] = { "Your MAC" };
IPAddress server(216,52,233,120);
IPAddress ip( "Your IP" );


unsigned int randomdata = 0;

EthernetClient client;


#define WEBSITE     "api.xively.com"
#define API_key     "Your APIKey"
#define feedID      "Your FeedID"

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
  }
  
  // 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 Randomize()
{

  randomdata = (randomdata == 0) ? 50 : 0;
}


void loop() {
  
  
  Randomize();
  

  
  // Prepare JSON for Xively & get length
  int length = 0;
  String data = "";
 
  data = data + "\n" + "{\"version\":\"1.0.0\",\"datastreams\" : [ {\"id\" : \"WaveForm\",\"current_value\" : \"" + String(randomdata) + "\"}]}";
  
  length = data.length();


  if (client.connect(server, 80)) {

        Serial.println("Client Connected");
        if (client.connected()) 
        {
               Serial.println("Connected!");
              client.println("PUT /v2/feeds/" + String(feedID) + ".json HTTP/1.0");
              client.println("Host: api.xively.com");
              client.println("X-ApiKey: " + String(API_key));
              client.println("Content-Length: " + String(length));
              client.print("Connection: close");
              client.println();
              client.print(data);
              client.println();
              digitalWrite(STAT1, LOW); //Blink stat LED 
       } 
       else {
              Serial.println(F("Connection failed"));
              client.stop();
              return;
       }      
       
       while (client.connected()) {    
          while (client.available()) {
            char c = client.read();
            // Serial.print(c);
            }            
         client.stop();
      }      
      
      delay(1000);     
   }
   else {
     Serial.println("Client Failure");
   }

  
}