Fireduino WiFi Server
更新时间：2017-08-08 阅读：13670
Fireduino WiFi Server
Fireduino SDK 为WiFi 提供了一套完善的API，该组API兼容Arduino WiFi Shield 示例。
Fireduino WiFi Server 流程
相对于客户端的实现，服务器端的实现稍复杂一点。
第一步：
创建一个 WiFiServer 对象，其参数为表监听的端口号，接着调用对象函数begin函数告诉Server对象开始进行监听客户端的连接。
第二步：
如果客户端连接入服务器端上时，可以通过server对象函数available获取连入的客户端对象。在此客户端对象进行数据收发。
第三步：
完成数据传输后可以调用客户端对象 stop 函数 结束传输与关闭传输的TCP通道。
示例程序 -- Telnet
#include <WiFi.h> char ssid[] = "yourNetwork"; // your network SSID (name) char pass[] = "secretPassword"; // your network password int status = WL_IDLE_STATUS; WiFiServer server(23); boolean alreadyConnected = false; // whether or not the client was connected previously void setup() { //Initialize serial and wait for port to open: Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } // check for the presence of the shield: if (WiFi.status() == WL_NO_SHIELD) { Serial.println("WiFi shield not present"); // don't continue: while (true); } String fv = WiFi.firmwareVersion(); if (fv != "1.1.0") { Serial.println("Please upgrade the firmware"); } // attempt to connect to Wifi network: while (status != WL_CONNECTED) { Serial.print("Attempting to connect to SSID: "); Serial.println(ssid); // Connect to WPA/WPA2 network. Change this line if using open or WEP network: status = WiFi.begin(ssid, pass); // wait 10 seconds for connection: delay(10000); } // start the server: server.begin(); // you're connected now, so print out the status: printWifiStatus(); } void loop() { // wait for a new client: WiFiClient client = server.available(); // when the client sends the first byte, say hello: if (client) { if (!alreadyConnected) { // clead out the input buffer: client.flush(); Serial.println("We have a new client"); client.println("Hello, client!"); alreadyConnected = true; } if (client.available() > 0) { // read the bytes incoming from the client: char thisChar = client.read(); // echo the bytes back to the client: server.write(thisChar); // echo the bytes to the server as well: Serial.write(thisChar); } } } void printWifiStatus() { // print the SSID of the network you're attached to: Serial.print("SSID: "); Serial.println(WiFi.SSID()); // print your WiFi shield's IP address: IPAddress ip = WiFi.localIP(); Serial.print("IP Address: "); Serial.println(ip); // print the received signal strength: long rssi = WiFi.RSSI(); Serial.print("signal strength (RSSI):"); Serial.print(rssi); Serial.println(" dBm"); }
