Example 1
#include<WiFi.h>
const char *ssid = "Charlie Testing AP";
const char *password = "12345678";
WiFiServer server(80);
void setup()
{
Serial.begin(115200);
Serial.println();
Serial.print("Setting soft-AP ... ");
IPAddress softLocal(192,168,128,1);
IPAddress softGateway(192,168,128,1);
IPAddress softSubnet(255,255,255,0);
WiFi.softAPConfig(softLocal, softGateway, softSubnet);
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();
Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());
}
void loop()
{
WiFiClient client = server.available();
if (client)
{
Serial.println("\n[Client connected]");
while (client.connected())
{
// read line by line what the client (web browser) is requesting
if (client.available())
{
client.println(prepareHtmlPage());
break;
}
}
delay(1); // give the web browser time to receive the data
// close the connection:
client.stop();
Serial.println("[Client disonnected]");
}
}
// prepare a web page to be send to a client (web browser)
String prepareHtmlPage()
{
String htmlPage =
String("HTTP/1.1 200 OK\r\n") +
"Content-Type: text/html\r\n" +
"Connection: close\r\n" + // the connection will be closed after completion of the response
"Refresh: 5\r\n" + // refresh the page automatically every 5 sec
"\r\n" +
"<!DOCTYPE HTML>" +
"<html>" +
"Analog input: " + String(analogRead(A0)) +
"</html>" +
"\r\n";
return htmlPage;
}
打印：
*******************************************************************
Example 2:
#include<WiFi.h>
const char *ssid = "Charlie Testing AP";
const char *password = "12345678";
WiFiServer server(80);
void setup()
{
Serial.begin(115200);
Serial.println();
Serial.print("Setting soft-AP ... ");
IPAddress softLocal(192,168,128,1);
IPAddress softGateway(192,168,128,1);
IPAddress softSubnet(255,255,255,0);
WiFi.softAPConfig(softLocal, softGateway, softSubnet);
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();
Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());
}
void loop() {
// 监听客户端传来的数据
WiFiClient client = server.available();
if (client) {
Serial.println("new client");
// 一个Http请求结尾必须带有回车换行
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// 如果收到空白行，说明http请求结束，并发送响应消息
if (c == '\n' && currentLineIsBlank) {
// 发送标准的HTTP响应
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
// 添加一个meta刷新标签, 浏览器会每5秒刷新一次
// 如果此处刷新频率设置过高，可能会出现网页的卡死的状况
client.println("<meta http-equiv=\"refresh\" content=\"5\">");
// 输出每个模拟口读到的值
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
int sensorReading = analogRead(analogChannel);
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(sensorReading);
client.println("<br />");
}
client.println("</html>");
break;
}
if (c == '\n') {
// 已经开始一个新行
currentLineIsBlank = true;
}
else if (c != '\r') {
// 在当前行已经得到一个字符
currentLineIsBlank = false;
}
}
}
// 等待浏览器接收数据
delay(1);
// 断开连接
client.stop();
Serial.println("client disonnected");
}
}
// prepare a web page to be send to a client (web browser)
String prepareHtmlPage()
{
String htmlPage =
String("HTTP/1.1 200 OK\r\n") +
"Content-Type: text/html\r\n" +
"Connection: close\r\n" + // the connection will be closed after completion of the response
"Refresh: 5\r\n" + // refresh the page automatically every 5 sec
"\r\n" +
"<!DOCTYPE HTML>" +
"<html>" +
"Analog input: " + String(analogRead(A0)) +
"</html>" +
"\r\n";
return htmlPage;
}
打印：
analog input 0 is 4095
analog input 1 is 0
analog input 2 is 4095
analog input 3 is 0
analog input 4 is 4095
analog input 5 is 0
后台串口打印：（该打印是 前台web 给后台发送的数据）
new client
GET / HTTP/1.1
Host: 192.168.4.1
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Referer:
http://192.168.4.1/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
client disonnected
*******************************************************************
Example 3
web通信
通过url带参数
#include <WiFi.h>
//////////////////////
// WiFi Definitions //
//////////////////////
const char WiFiAPPSK[] = "12345678";
/////////////////////
// Pin Definitions //
/////////////////////
const int LED_PIN = 5; // Thing's onboard, green LED
const int ANALOG_PIN = A0; // The only analog pin on the esp8266
const int DIGITAL_PIN = 12; // Digital pin to be read
WiFiServer server(80);
void setup()
{
initHardware();
setupWiFi();
server.begin();
}
void loop()
{
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
// Match the request
int val = -1; // We'll use 'val' to keep track of both the
// request type (read/set) and value if set.
if (req.indexOf("/led/0") != -1)
val = 0; // Will write LED low
else if (req.indexOf("/led/1") != -1)
val = 1; // Will write LED high
else if (req.indexOf("/read") != -1)
val = -2; // Will print pin reads
// Otherwise request will be invalid. We'll say as much in HTML
// Set GPIO5 according to the request
if (val >= 0)
digitalWrite(LED_PIN, val);
client.flush();
// Prepare the response. Start with the common header:
String s = "HTTP/1.1 200 OK\r\n";
s += "Content-Type: text/html\r\n\r\n";
s += "<!DOCTYPE HTML>\r\n<html>\r\n";
// If we're setting the LED, print out a message saying we did
if (val >= 0)
{
s += "LED is now ";
s += (val)?"high":"low";
}
else if (val == -2)
{ // If we're reading pins, print out those values:
s += "Analog Pin = ";
s += String(analogRead(ANALOG_PIN));
s += "<br>"; // Go to the next line.
s += "Digital Pin 12 = ";
s += String(digitalRead(DIGITAL_PIN));
}
else
{
s += "Invalid Request.<br> Try /led/1, /led/0, or /read.";
}
s += "</html>\n";
// Send the response to the client
client.print(s);
delay(1);
Serial.println("Client disonnected");
// The client will actually be disconnected
// when the function returns and 'client' object is detroyed
}
void setupWiFi()
{
WiFi.mode(WIFI_AP);
// Do a little work to get a unique-ish name. Append the
// last two bytes of the MAC (HEX'd) to "Thing-":
String AP_NameString = "ESP8266 Thing ";
char AP_NameChar[AP_NameString.length() + 1];
memset(AP_NameChar, AP_NameString.length() + 1, 0);
for (int i=0; i<AP_NameString.length(); i++)
AP_NameChar
= AP_NameString.charAt(i);
WiFi.softAP(AP_NameChar, WiFiAPPSK);
Serial.println();
Serial.print ( "IP address: " );
Serial.println ( WiFi.softAPIP() );
}
void initHardware()
{
Serial.begin(115200);
pinMode(DIGITAL_PIN, INPUT_PULLUP);
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, LOW);
// Don't need to set ANALOG_PIN as input,
// that's all it can be.
}
*******************************************************************
Example 4
web 调试:
#include<WiFi.h>
const char *ssid = "Charlie Testing AP";
const char *password = "12345678";
WiFiServer server(80);
String readString="";
int Light=2;
int Sensor=A0;
WiFiClient client;
void setup()
{
Serial.begin(115200);
Serial.println();
Serial.print("Setting soft-AP ... ");
IPAddress softLocal(192,168,128,1);
IPAddress softGateway(192,168,128,1);
IPAddress softSubnet(255,255,255,0);
WiFi.softAPConfig(softLocal, softGateway, softSubnet);
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();
Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());
}
void loop() {
// 监听连入的客户端
client = server.available();
if (client) {
Serial.println("new client");
boolean currentLineIsBlank = false;
while (client.connected()) {
Serial.println("\n #####zf connected");
if (client.available()) {
Serial.println("\n #####zf available");
char c = client.read();
readString += c;
if (c == '\n') {
Serial.println("\n #####zf get nnnnn");
Serial.println(readString);
//检查收到的信息中是否有”on”，有则开灯
if(readString.indexOf("?on") >0) {
digitalWrite(Light, HIGH);
Serial.println("Led On");
break;
}
//检查收到的信息中是否有”off”，有则关灯
if(readString.indexOf("?off") >0) {
digitalWrite(Light, LOW);
Serial.println("Led Off");
break;
}
//检查收到的信息中是否有”getBrightness”，有则读取光敏模拟值，并返回给浏览器
if(readString.indexOf("?getBrightness") >0) {
client.println(analogRead(Sensor));
break;
}
//发送HTML文本
Serial.println("\n #####zf begin send html");
client.println(testSendHTML());
//client.println(prepareHtmlPage());
Serial.println("\n #####zf end send html");
break;
}
}
else
{
Serial.println("\n #####zf not ava");
}
}
delay(5);
client.stop();
Serial.println("client disonnected");
readString="";
}
}
// 用于输出HTML文本的函数
void SendHTML()
{
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html><head><meta charset=\"UTF-8\"><title>OpenJumper!Arduino Web Server</title><script type=\"text/javascript\">");
client.println("function send2arduino(){var xmlhttp;if (window.XMLHttpRequest)xmlhttp=new XMLHttpRequest();else xmlhttp=new ActiveXObject(\"Microsoft.XMLHTTP\");element=document.getElementById(\"light\");if (element.innerHTML.match(\"Turn on\")){element.innerHTML=\"Turn off\"; xmlhttp.open(\"GET\",\"?on\",true);}else{ element.innerHTML=\"Turn on\";xmlhttp.open(\"GET\",\"?off\",true); }xmlhttp.send();}");
client.println("function getBrightness(){var xmlhttp;if (window.XMLHttpRequest)xmlhttp=new XMLHttpRequest();else xmlhttp=new ActiveXObject(\"Microsoft.XMLHTTP\");xmlhttp.onreadystatechange=function(){if (xmlhttp.readyState==4 && xmlhttp.status==200)document.getElementById(\"brightness\").innerHTML=xmlhttp.responseText;};xmlhttp.open(\"GET\",\"?getBrightness\",true); xmlhttp.send();}window.setInterval(getBrightness,1000);</script>");
client.println("</head><body><div align=\"center\"><h1>Arduino Web Server</h1><div>brightness:</div><div id=\"brightness\">");
client.println(analogRead(Sensor));
client.println("</div><button id=\"light\" type=\"button\" onclick=\"send2arduino()\">Turn on</button><button type=\"button\" onclick=\"alert('OpenJumper Web Server')\">About</button></div></body></html>");
}
String testSendHTML()
{
String htmlPage =
String("HTTP/1.1 200 OK\r\n") +
"Content-Type: text/html\r\n" +
"Connection: close\r\n" + // the connection will be closed after completion of the response
"\r\n" +
"<!DOCTYPE HTML>" +
"<html><head><meta charset=\"UTF-8\"><title>OpenJumper!Arduino Web Server</title><script type=\"text/javascript\">" +
"function send2arduino(){var xmlhttp;if (window.XMLHttpRequest)xmlhttp=new XMLHttpRequest();else xmlhttp=new ActiveXObject(\"Microsoft.XMLHTTP\");element=document.getElementById(\"light\");if (element.innerHTML.match(\"Turn on\")){element.innerHTML=\"Turn off\"; xmlhttp.open(\"GET\",\"?on\",true);}else{ element.innerHTML=\"Turn on\";xmlhttp.open(\"GET\",\"?off\",true); }xmlhttp.send();}" +
"function getBrightness(){var xmlhttp;if (window.XMLHttpRequest)xmlhttp=new XMLHttpRequest();else xmlhttp=new ActiveXObject(\"Microsoft.XMLHTTP\");xmlhttp.onreadystatechange=function(){if (xmlhttp.readyState==4 && xmlhttp.status==200)document.getElementById(\"brightness\").innerHTML=xmlhttp.responseText;};xmlhttp.open(\"GET\",\"?getBrightness\",true); xmlhttp.send();}window.setInterval(getBrightness,1000);</script>" +
"</head><body><div align=\"center\"><h1>Arduino Web Server</h1><div>brightness:</div><div id=\"brightness\">" +
String(analogRead(Sensor)) +
"</div><button id=\"light\" type=\"button\" onclick=\"send2arduino()\">Turn on</button><button type=\"button\" onclick=\"alert('OpenJumper Web Server')\">About</button></div></body></html>";
return htmlPage;
}
显示页面：
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