File content as of revision 2:6738db3eb2ed:

#include "mbed.h"
#include <string>
#include "ESP8266.h"

ESP8266 esp(D8, D2, 9600);
Serial pc(D1, D0, 115200);

char snd[255], rcv[1000];

int main() {   
    pc.printf("Hello!! \n");
        
    pc.printf("Reset ESP\r\n");
    esp.Reset();
    esp.RcvReply(rcv, 400);
    pc.printf("%s", rcv);
    wait(2);
    
    pc.printf("Sending AT\r\n");
    strcpy(snd, "AT");
    esp.SendCMD(snd);
    esp.RcvReply(rcv, 400);
    pc.printf("%s", rcv);
    wait(2);
    
    pc.printf("Set mode to AP\r\n");
    esp.SetMode(3);
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    
    pc.printf("Receiving Wifi List\r\n");
    esp.GetList(rcv);
    pc.printf("%s", rcv);
    
    pc.printf("Connecting to AP\r\n");
    esp.Join("Mind", "00000000"); // Replace MyAP and MyPasswd with your SSID and password
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(2);
    
    pc.printf("Check Connect\r\n");
    esp.Check(rcv);
    esp.RcvReply(rcv, 200);
    pc.printf("%s", rcv);
    
    pc.printf("Getting IP\r\n");
    esp.GetIP(rcv);
    pc.printf("%s", rcv);
    
    pc.printf("Setting multiple connections\r\n");
    esp.SetMultiple();
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(4);
    
    pc.printf("Start server mode on port 81\r\n");
    esp.StartServerMode(9999);
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(4);
}