mirror of
https://github.com/arduino/Arduino.git
synced 2024-12-13 23:48:46 +01:00
125 lines
3.6 KiB
Plaintext
125 lines
3.6 KiB
Plaintext
/*
|
|
Pachube sensor client with Strings
|
|
|
|
This sketch connects an analog sensor to Pachube (http://www.pachube.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 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
|
|
updated 4 Sep 2010
|
|
by Tom Igoe
|
|
|
|
This code is in the public domain.
|
|
|
|
*/
|
|
|
|
#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};
|
|
// assign an IP address for the controller:
|
|
byte ip[] = {
|
|
192,168,1,20 };
|
|
byte gateway[] = {
|
|
192,168,1,1};
|
|
byte subnet[] = {
|
|
255, 255, 255, 0 };
|
|
|
|
// The address of the server you want to connect to (pachube.com):
|
|
byte server[] = {
|
|
173,203,98,29 };
|
|
|
|
// initialize the library instance:
|
|
Client client(server, 80);
|
|
|
|
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 int postingInterval = 10000; //delay between updates to Pachube.com
|
|
|
|
void setup() {
|
|
// start the ethernet connection and serial port:
|
|
Ethernet.begin(mac, ip);
|
|
Serial.begin(9600);
|
|
// give the ethernet module time to boot up:
|
|
delay(1000);
|
|
}
|
|
|
|
void loop() {
|
|
// read the analog sensor:
|
|
int sensorReading = analogRead(A0);
|
|
// convert the data to a String to send it:
|
|
String dataString = String(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 += ",";
|
|
dataString += String(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()) {
|
|
Serial.println("connecting...");
|
|
// send the HTTP PUT request.
|
|
// fill in your feed address here:
|
|
client.print("PUT /api/YOUR_FEED_HERE.csv HTTP/1.1\n");
|
|
client.print("Host: www.pachube.com\n");
|
|
// fill in your Pachube API key here:
|
|
client.print("X-PachubeApiKey: YOUR_KEY_HERE\n");
|
|
client.print("Content-Length: ");
|
|
client.println(thisData.length(), DEC);
|
|
|
|
// last pieces of the HTTP PUT request:
|
|
client.print("Content-Type: text/csv\n");
|
|
client.println("Connection: close\n");
|
|
|
|
// here's the actual content of the PUT request:
|
|
client.println(thisData);
|
|
|
|
// note the time that the connection was made:
|
|
lastConnectionTime = millis();
|
|
}
|
|
else {
|
|
// if you couldn't make a connection:
|
|
Serial.println("connection failed");
|
|
}
|
|
}
|