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@indiejoseph
Created August 1, 2013 08:46
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SenseCloud - Arduino code
#include <SPI.h>
#include <Ethernet.h>
// 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(192,168,1,123); // Device IP
IPAddress myDns(8,8,8,8); // DNS Server
float tempc = 0; // temperature variables
int port = 5000; // Server port
// initialize the library instance:
EthernetClient client;
char server[] = "cloud.sensebox.co";
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 = (long)3*1000; // delay between updates, in milliseconds
void setup() {
// start serial port:
Serial.begin(9600);
// give the ethernet module time to boot up:
delay(1000);
// start the Ethernet connection using a fixed IP address and DNS server:
Ethernet.begin(mac, ip, myDns);
// print the Ethernet board/shield's IP address:
Serial.print("My IP address: ");
Serial.println(Ethernet.localIP());
}
void loop() {
// 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)) {
httpRequest();
}
// 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 httpRequest() {
tempc = analogRead(A8); //read the value from the sensor
tempc = tempc * 0.48828125; //convert the analog data to temperature
delay(1000);
// if there's a successful connection:
if (client.connect(server, port)) {
Serial.println("connecting...");
// send the HTTP PUT request:
String data = "{\"datastreams\": [{";
data += " \"name\": \"temperature\",";
data += " \"value\": ";
data += (int)tempc;
data += ",";
data += " \"unit\": \"Celsius\",";
data += " \"unit_symbol\": \"C\",";
data += " \"tags\": \"test\"";
data += "}]}";
Serial.println(tempc);
Serial.println(data);
tempc = 0;
client.println("POST /api/apps/temp/datastreams HTTP/1.1");
client.println("X-Device-Key: 42bc4a155b047ad001225bdacd1fbaa4");
client.println("X-App-Key: 25317badef4e07d09d523069f0ebacf9");
client.println( "Content-Type: application/json" );
client.println( "Connection: close" );
client.print( "Content-Length: " );
client.println( data.length() );
client.println();
client.print( data );
client.println();
// note the time that the connection was made:
lastConnectionTime = millis();
}
else {
// if you couldn't make a connection:
Serial.println("connection failed");
Serial.println("disconnecting.");
client.stop();
}
}
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