【开热点】
ESP32具有WIFI功能,以下示例使用ESP32创建了一个wifi服务器,使用客户端连接到该服务器,遥控LED的亮灭。
/* WiFiAccessPoint.ino 创建了一个wifi热点并提供了一个web服务
Steps: 1. 连接到这个wifi "yourAp"
2. 访问 http://192.168.4.1/H 来开灯或者访问http://192.168.4.1/L 来关灯
OR Run raw TCP "GET /H" and "GET /L" on PuTTY terminal with 192.168.4.1 as IP address and 80 as port
*/
#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiAP.h>
// 热点设置你的wifi与密码
const char *ssid = "";
const char *password = "";
WiFiServer server(80);
void setup() {
pinMode(LED_BUILTIN, OUTPUT);//将LED引脚设置为输出模式
Serial.begin(115200);
Serial.println();
Serial.println("Configuring access point...");
// 配置wifi以及获取IP地址.
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();
Serial.println("Server started");
}
void loop() {
WiFiClient client = server.available(); // listen for incoming clients
if (client) { // if you get a client,
Serial.println("New Client."); // print a message out the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println();
// the content of the HTTP response follows the header:
client.print("Click <a href="/H">here</a> to turn ON the LED.<br>");
client.print("Click <a href="/L">here</a> to turn OFF the LED.<br>");
// The HTTP response ends with another blank line:
client.println();
// break out of the while loop:
break;
} else { // if you got a newline, then clear currentLine:
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}
// Check to see if the client request was "GET /H" or "GET /L":
if (currentLine.endsWith("GET /H")) {
digitalWrite(LED_BUILTIN, HIGH); // GET /H turns the LED on
}
if (currentLine.endsWith("GET /L")) {
digitalWrite(LED_BUILTIN, LOW); // GET /L turns the LED off