Arduino Twitter Клиент


Превод:  Т. Б.


Този пример Ви показва, как да отговорите на HTTP заявка чрез Ethernet shield.
Тази блокова схема се свързва към Twitter чрез Ethernet shield.
Той анализира върнатият XML файл, и търси в него следните два ТАГ-а <text> това tweet </text>

Вие може да използвате Arduino Ethernet Shield-да, или Adafruit Ethernet shild, но все един от двата
ще Ви свърши работа, докато има свързан към себе си Ethernet модул Wiznet.

+ Arduino Ethernet Shield
+ Shild-съвместим с Arduino платката

+ Акаунт в


*** изображението е проектирано чрез Fritzing. За повече примерни схеми, моля погледнете официялната страница на проекта „Fritzing project“.

В горното изображение, вашата Arduino платка трябва да се постави точно под „Ethernet shield“-да.



// Начало на кода

Twitter Client with Strings

This sketch connects to Twitter using an Ethernet shield. It parses the XML
returned, and looks for <text>this is a tweet</text>

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 DHCP routines in the Ethernet library which is part of the
Arduino core from version 1.0 beta 1

This example uses the String library, which is part of the Arduino core from
version 0019.

* Ethernet shield attached to pins 10, 11, 12, 13

created 21 May 2011
modified 9 Apr 2012
by Tom Igoe

This code is in the public domain.

#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[] = {
0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x01 };
IPAddress ip(192,168,1,20);

// initialize the library instance:
EthernetClient client;

const unsigned long requestInterval = 60000; // delay between requests

char serverName[] = „“; // twitter URL

boolean requested; // whether you’ve made a request since connecting
unsigned long lastAttemptTime = 0; // last time you connected to the server, in milliseconds

String currentLine = „“; // string to hold the text from server
String tweet = „“; // string to hold the tweet
boolean readingTweet = false; // if you’re currently reading the tweet

void setup() {
// reserve space for the strings:

// Open serial communications and wait for port to open:
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only

// attempt a DHCP connection:
Serial.println(„Attempting to get an IP address using DHCP:“);
if (!Ethernet.begin(mac)) {
// if DHCP fails, start with a hard-coded address:
Serial.println(„failed to get an IP address using DHCP, trying manually“);
Ethernet.begin(mac, ip);
Serial.print(„My address:“);
// connect to Twitter:

void loop()
if (client.connected()) {
if (client.available()) {
// read incoming bytes:
char inChar =;

// add incoming byte to end of line:
currentLine += inChar;

// if you get a newline, clear the line:
if (inChar == ‘\n’) {
currentLine = „“;
// if the current line ends with <text>, it will
// be followed by the tweet:
if ( currentLine.endsWith(„<text>“)) {
// tweet is beginning. Clear the tweet string:
readingTweet = true;
tweet = „“;
// if you’re currently reading the bytes of a tweet,
// add them to the tweet String:
if (readingTweet) {
if (inChar != ‘<‘) {
tweet += inChar;
else {
// if you got a „<“ character,
// you’ve reached the end of the tweet:
readingTweet = false;
// close the connection to the server:
else if (millis() – lastAttemptTime > requestInterval) {
// if you’re not connected, and two minutes have passed since
// your last connection, then attempt to connect again:

void connectToServer() {
// attempt to connect, and wait a millisecond:
Serial.println(„connecting to server…“);
if (client.connect(serverName, 80)) {
Serial.println(„making HTTP request…“);
// make HTTP GET request to twitter:
client.println(„GET /1/statuses/user_timeline.xml?screen_name=arduino&count=1 HTTP/1.1“);
// note the time of this connect attempt:
lastAttemptTime = millis();

// Край на кода