diff options
Diffstat (limited to 'libraries/Ethernet/examples/WebClientRepeating')
| -rw-r--r-- | libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino | 111 | 
1 files changed, 111 insertions, 0 deletions
| diff --git a/libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino b/libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino new file mode 100644 index 0000000..650f74e --- /dev/null +++ b/libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino @@ -0,0 +1,111 @@ +/* +  Repeating Web client +  + This sketch connects to a a web server and makes a request + 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 DNS, by assigning the Ethernet client with a MAC address, + IP address, and DNS address. +  + Circuit: + * Ethernet shield attached to pins 10, 11, 12, 13 +  + created 19 Apr 2012 + by Tom Igoe +  + http://arduino.cc/en/Tutorial/WebClientRepeating + 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}; +// fill in an available IP address on your network here, +// for manual configuration: +IPAddress ip(10,0,0,20); + +// fill in your Domain Name Server address here: +IPAddress myDns(1,1,1,1); + +// initialize the library instance: +EthernetClient client; + +char server[] = "www.arduino.cc"; + +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 = 60L*1000L;  // delay between updates, in milliseconds +						  // the "L" is needed to use long type numbers + +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() { +  // if there's a successful connection: +  if (client.connect(server, 80)) { +    Serial.println("connecting..."); +    // send the HTTP PUT request: +    client.println("GET /latest.txt HTTP/1.1"); +    client.println("Host: www.arduino.cc"); +    client.println("User-Agent: arduino-ethernet"); +    client.println("Connection: close"); +    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(); +  } +} + + + + | 
