Arduino 利用Ethernet傳送及接收

今天要說的不算是照門只說程式，如果有什麼問題還請大家指教

ps 有任何的電子學的問題及關於電子學，我一律沒辦法回答大家(我不是很專業也怕誤人子弟)


測試環境及版本
OSX 10.8.3
Arduino 1.0.4


設備
Mega2560
Ethernet with PoE module

要注意幾個，宣告幾個變數
mac         為你設備的mac號
ip            你這台Ethernet的ip你可以自行設定(網段要一樣才收得到, ip不可跟其他設備衝突)
remote    你想要傳送的ip位置
Listen(x) 你x可以設定你想監聽的port號


EthernetSend()    -  傳送到指定位置
- Deliver()：

client.print("GET /");

要設在client起始接著GET /斜線後面接你的目標網址
例如你可以設定成

client.print("GET /save.php?a=123&b=456");

EthernetListen()  -  監聽目標
當去瀏覽這個網頁就會啟動function
裡面的Request為回傳網頁資訊包含瀏覽的路徑, get/post, ....
接下的Control是針對瀏覽路徑知道要怎麼Control 設備(LED亮/滅)


github: https://github.com/jiunjiun/Arduino_Ethernet


下面為程式碼

	#include <Ethernet.h>
	#include <SPI.h>
	byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}; // 乙太網路
	IPAddress ip(192, 168, 0, 30); // local IP
	IPAddress remote(192, 168, 0, 130); // remote IP
	EthernetServer Listen(80); // server
	EthernetClient client; // client
	int time = 0;
	String Request;
	void setup() {
	Ethernet.begin(mac, ip);
	Listen.begin();
	Serial.print("server is at ");
	Serial.println(Ethernet.localIP());
	}
	void loop() {
	EthernetSend();
	EthernetListen();
	}
	void EthernetSend() {
	if(time == 5) {
	Deliver();
	time = 0;
	}
	time++;
	}
	void Deliver() {
	Serial.println("connecting...");
	if (client.connect(remote, 80)) {
	Serial.println("connected");
	client.print("GET /"); //
	client.print("/");
	client.println(" HTTP/1.0");
	client.println();
	client.stop();
	client.flush();
	Serial.println("send!!");
	} else {
	Serial.println("connection failed");
	}
	}
	void EthernetListen() {
	// Listen for incoming clients
	EthernetClient client = Listen.available();
	if (client) {
	Serial.println("new client");
	// an http request ends with a blank line
	boolean currentLineIsBlank = true;
	while (client.connected()) {
	if (client.available()) {
	char c = client.read();
	Request += c;
	if (c == '\n' && currentLineIsBlank) {
	Control(Request);
	Serial.println(Request);
	Request = "";
	break;
	}
	if (c == '\n') {
	// you're starting a new line
	currentLineIsBlank = true;
	} else if (c != '\r') {
	// you've gotten a character on the current line
	currentLineIsBlank = false;
	}
	}
	}
	client.stop();
	Serial.println("client disonnected");
	}
	}
	void Control(String Request) {
	if(Request.indexOf("/do_something1") > -1) {
	//do something 1 ....
	} else if(Request.indexOf("/do_something2") > -1) {
	//do something 2 ....
	}
	}

view raw Arduino_Ethernet.ino hosted with ❤ by GitHub