سلام به همه امروز سورس راه hotspot برای #ESP8266 براتون اماده کردم.
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>

//SSID and Password to your ESP Access Point
const char* ssid = "ESPWebServer";
const char* password = "12345678";

ESP8266WebServer server(80); //Server on port 80

//==============================================================
// This rutine is exicuted when you open its IP in browser
//==============================================================
void handleRoot() {
server.send(200, "text/plain", "hello from esp8266!");
}

//===============================================================
// SETUP
//===============================================================
void setup(void){
Serial.begin(9600);
Serial.println("");
WiFi.mode(WIFI_AP); //Only Access point
WiFi.softAP(ssid, password); //Start HOTspot removing password will disable security

IPAddress myIP = WiFi.softAPIP(); //Get IP address
Serial.print("HotSpt IP:");
Serial.println(myIP);

server.on("/", handleRoot); //Which routine to handle at root location

server.begin(); //Start server
Serial.println("HTTP server started");
}
//===============================================================
// LOOP
//===============================================================
void loop(void){
server.handleClient(); //Handle client requests
}
بعد از ران کردن این کد esp در سریال مانیتورینگ به شما یک ip خواهد داد که با وارد کردن ان در مرورگر خود قادر به مشاهده ی webserver راه اندازی شده توس esp در گوشی و یا سیستم خود هستید.


🌺🌺 با تشکر از مهندس
@MehdiYasinzade

#include <Wire.h>

void setup() { Wire.begin(); //creates a Wire object

// set I/O pins to outputs
Wire.beginTransmission(0x20); //begins talking to the slave device
Wire.write(0x00); //selects the IODIRA register
Wire.write(0x00); //this sets all port A pins to outputs
Wire.endTransmission(); //stops talking to device
Wire.beginTransmission(0x20);//begins talking again to slave device
Wire.write(0x01); //selects the IODIRB register
Wire.write(0x00); // sets all port B pins to outputs
Wire.endTransmission(); //ends communication with slave device
}

void loop()
{
Wire.beginTransmission(0x20); //starts talking to slave device
Wire.write(0x12); //selects the GPIOA pins
Wire.write(00000011); // turns on pins 0 and 1 of GPIOA
Wire.endTransmission(); //ends communication with the device
Wire.beginTransmission(0x20); //starts talking to slave device
Wire.write(0x13); //selects the GPIOB pins
Wire.write(00000001); //turns on pin 0 of GPIOA
Wire.endTransmission();//ends communication with the device
}