File content as of revision 4:217a562d8950:

#include "mbed.h"
#include <string>
#include "ESP8266.h"
////////////////
ESP8266 esp(D8, D2, 9600);
Serial pc(D1, D0);

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);
    wait(2);

    pc.printf("Receiving Wifi List\r\n");
    esp.GetList(rcv);
    pc.printf("%s", rcv);

    //pc.printf("Setting Wifi\r\n");
//    esp.SetWiFi("ESP8266-MIND", "mindkafuu");
//    esp.RcvReply(rcv, 1000);
//    pc.printf("%s", rcv);
//    wait(4);

    pc.printf("Connecting to AP\r\n");
    esp.Join("BIN11_2G", "789789BN"); // Replace MyAP and MyPasswd with your SSID and password
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(8);

    pc.printf("Check Connected\r\n");
    esp.check();
    esp.RcvReply(rcv, 400);
    pc.printf("%s", rcv);
    wait(2);

    pc.printf("Check Wifi\r\n");
    esp.look();
    esp.RcvReply(rcv, 400);
    pc.printf("%s", rcv);
    wait(2);

    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 80\r\n");
    esp.StartServerMode(80);
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(4);
    
    while(1) {
        esp.CheckIP();
        esp.RcvReply(rcv, 5000);
        pc.printf("%s", rcv);
        wait(2);
    }
}