Wifi.cpp

00001 #include "Wifi.h"
00002 
00003 Wifi::Wifi(PinName tx, PinName rx, PinName rst) 
00004     : esp(tx, rx), reset(rst), led1(LED1), led2(LED2), led3(LED3), led4(LED4) {
00005         ssid = "GTother";     // enter WiFi router ssid inside the quotes
00006         pwd = "GeorgeP@1927"; // enter WiFi router password inside the quotes
00007 }
00008 void dev_recv()
00009 {
00010     led1 = !led1;
00011     while(esp.readable()) {
00012         pc.putc(esp.getc());
00013     }
00014 }
00015  
00016 void pc_recv()
00017 {
00018     led4 = !led4;
00019     while(pc.readable()) {
00020         esp.putc(pc.getc());
00021     }
00022 } 
00023 void Wifi::ESPsetbaudrate() {
00024     strcpy(snd, "AT+CIOBAUD=115200\r\n");   // change the numeric value to the required baudrate
00025     SendCMD();
00026 }
00027 void Wifi::ESPconfig() {
00028     wait(5);
00029     pc.printf("\f---------- Starting ESP Config ----------\r\n\n");
00030         strcpy(snd,".\r\n.\r\n");
00031     SendCMD();
00032         wait(1);
00033     pc.printf("---------- Reset & get Firmware ----------\r\n");
00034     strcpy(snd,"node.restart()\r\n");
00035     SendCMD();
00036     timeout=5;
00037     getreply();
00038     pc.printf(buf);
00039  
00040     wait(2);
00041  
00042     pc.printf("\n---------- Get Version ----------\r\n");
00043     strcpy(snd,"print(node.info())\r\n");
00044     SendCMD();
00045     timeout=4;
00046     getreply();
00047     pc.printf(buf);
00048  
00049     wait(3);
00050  
00051     // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
00052     pc.printf("\n---------- Setting Mode ----------\r\n");
00053     strcpy(snd, "wifi.setmode(wifi.STATION)\r\n");
00054     SendCMD();
00055     timeout=4;
00056     getreply();
00057     pc.printf(buf);
00058  
00059     wait(2);
00060  
00061    
00062  
00063     pc.printf("\n---------- Listing Access Points ----------\r\n");
00064     strcpy(snd, "function listap(t)\r\n");
00065         SendCMD();
00066         wait(1);
00067         strcpy(snd, "for k,v in pairs(t) do\r\n");
00068         SendCMD();
00069         wait(1);
00070         strcpy(snd, "print(k..\" : \"..v)\r\n");
00071         SendCMD();
00072         wait(1);
00073         strcpy(snd, "end\r\n");
00074         SendCMD();
00075         wait(1);
00076         strcpy(snd, "end\r\n");
00077         SendCMD();
00078         wait(1);
00079         strcpy(snd, "wifi.sta.getap(listap)\r\n");
00080     SendCMD();
00081     wait(1);
00082         timeout=15;
00083     getreply();
00084     pc.printf(buf);
00085  
00086     wait(2);
00087  
00088     pc.printf("\n---------- Connecting to AP ----------\r\n");
00089     pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
00090     strcpy(snd, "wifi.sta.config(\"");
00091     strcat(snd, ssid);
00092     strcat(snd, "\",\"");
00093     strcat(snd, pwd);
00094     strcat(snd, "\")\r\n");
00095     SendCMD();
00096     timeout=10;
00097     getreply();
00098     pc.printf(buf);
00099  
00100     wait(5);
00101  
00102     pc.printf("\n---------- Get IP's ----------\r\n");
00103     strcpy(snd, "print(wifi.sta.getip())\r\n");
00104     SendCMD();
00105     timeout=3;
00106     getreply();
00107     pc.printf(buf);
00108  
00109     wait(1);
00110  
00111     pc.printf("\n---------- Get Connection Status ----------\r\n");
00112     strcpy(snd, "print(wifi.sta.status())\r\n");
00113     SendCMD();
00114     timeout=5;
00115     getreply();
00116     pc.printf(buf);
00117  
00118     pc.printf("\n\n\n  If you get a valid (non zero) IP, ESP8266 has been set up.\r\n");
00119     pc.printf("  Run this if you want to reconfig the ESP8266 at any time.\r\n");
00120     pc.printf("  It saves the SSID and password settings internally\r\n");
00121     wait(10);
00122         
00123         
00124           pc.printf("\n---------- Setting up http server ----------\r\n");
00125     strcpy(snd, "srv=net.createServer(net.TCP)\r\n");
00126         SendCMD();
00127         wait(1);
00128         strcpy(snd, "srv:listen(80,function(conn)\r\n");
00129         SendCMD();
00130         wait(1);
00131         strcpy(snd, "conn:on(\"receive\",function(conn,payload)\r\n");
00132         SendCMD();
00133         wait(1);
00134         strcpy(snd, "print(payload)\r\n");
00135         SendCMD();
00136         wait(1);
00137         
00138         strcpy(snd, "conn:send(\"<!DOCTYPE html>\")\r\n");
00139         SendCMD();
00140       wait(1);
00141         
00142         strcpy(snd, "conn:send(\"<html>\")\r\n");
00143         SendCMD();
00144       wait(1);
00145         
00146         strcpy(snd, "conn:send(\"<h1> Hi James, NodeMcu.</h1>\")\r\n");
00147       SendCMD();
00148         wait(1);
00149         
00150         strcpy(snd, "conn:send(\"<h2> test</h2>\")\r\n");
00151         SendCMD();
00152         wait(1);
00153         
00154         strcpy(snd, "conn:send(\"</html>\")\r\n");
00155     SendCMD();
00156     wait(1);
00157         
00158         strcpy(snd, "end)\r\n");
00159     SendCMD();
00160     wait(1);
00161         
00162         strcpy(snd, "conn:on(\"sent\",function(conn) conn:close() end)\r\n");
00163     SendCMD();
00164     wait(1);
00165         strcpy(snd, "end)\r\n");
00166     SendCMD();
00167     wait(1);
00168         timeout=17;
00169     getreply();
00170     pc.printf(buf);
00171         pc.printf("\r\nDONE");   
00172 }
00173 void Wifi::SendCMD() {
00174     esp.printf("%s", snd);
00175 }
00176 void Wifi::getreply() {
00177     memset(buf, '\0', sizeof(buf));
00178     t.start();
00179     ended=0;
00180     count=0;
00181     while(!ended) {
00182         if(esp.readable()) {
00183             buf[count] = esp.getc();
00184             count++;
00185         }
00186         if(t.read() > timeout) {
00187             ended = 1;
00188             t.stop();
00189             t.reset();
00190         }
00191     }   
00192 }
00193 
00194 void Wifi::setupPage() {
00195     reset=0; //hardware reset for 8266
00196     pc.baud(9600);  // set what you want here depending on your terminal program speed
00197     pc.printf("\f\n\r-------------ESP8266 Hardware Reset-------------\n\r");
00198     wait(0.5);
00199     reset=1;
00200     timeout=2;
00201     getreply();
00202  
00203     esp.baud(9600);   // change this to the new ESP8266 baudrate if it is changed at any time.
00204  
00205     //ESPsetbaudrate();   //******************  include this routine to set a different ESP8266 baudrate  ******************
00206  
00207     ESPconfig();        //******************  include Config to set the ESP8266 configuration  ***********************
00208  
00209     pc.attach(&pc_recv, Serial::RxIrq);
00210     esp.attach(&dev_recv, Serial::RxIrq);
00211     
00212     // continuosly get AP list and IP
00213 }
00214