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Code to run WiFi in AP mode while running a simple webserver at the same time on an ESP32 Feather Board from Adafruit
#include <WiFi.h>
WiFiServer server(80);
const int LED_PIN = 13;
void setup()
{
initHardware();
setupWiFi();
Serial.println("Starting WebServer");
server.begin();
Serial.println("Webserver Started");
}
void loop()
{
webserverLoop();
}
void initHardware() {
pinMode(LED_PIN, OUTPUT);
Serial.begin(9600);
}
void setupWiFi() {
Serial.println("Setting WiFi Mode: WIFI_AP");
WiFi.mode(WIFI_AP);
Serial.println("Starting AP...");
bool success = WiFi.softAP("esp32", "12345678");
if(success) {
Serial.println("AP Started");
Serial.println(WiFi.softAPIP());
} else {
Serial.println("AP Setup Failed");
}
}
void webserverLoop() {
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 the LED on pin 13 on.<br>");
client.print("Click <a href=\"/L\">here</a> to turn the LED on pin 13 off.<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_PIN, HIGH); // GET /H turns the LED on
}
if (currentLine.endsWith("GET /L")) {
digitalWrite(LED_PIN, LOW); // GET /L turns the LED off
}
}
}
// close the connection:
client.stop();
Serial.println("Client Disconnected.");
}
}
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