main.cpp

00001 #include "mbed.h"
00002 
00003 Serial pc(USBTX, USBRX);
00004 Serial esp(p9,p10); // tx, rx 
00005 
00006 Timer t;
00007 
00008 int  count,ended,timeout;
00009 char buf[1024];
00010 char snd[255];
00011 
00012 char ssid[32] = "CWMWIFI";     // enter router ssid inside the quotes
00013 char pwd [32] = "CWM2016TT"; // enter router password inside the quotes
00014 
00015 void SendCMD(),getreply(),ESPconfig(),ESPsetbaudrate();
00016 
00017 
00018 int main() {
00019     
00020     pc.baud(115200);  // set what you want here depending on your terminal program speed
00021     esp.baud(115200);   // change this to the new ESP8266 baudrate if it is changed at any time.    
00022     
00023     //ESPsetbaudrate();   //******************  include this routine to set a different ESP8266 baudrate  ******************
00024 
00025     ESPconfig();        //******************  include Config to set the ESP8266 configuration  ***********************
00026     
00027    
00028    // contiuosly get AP list and IP
00029     while(1){
00030         pc.printf("\n---------- Listing Acces Points ----------\r\n");
00031         strcpy(snd, "AT+CWLAP\r\n");
00032         SendCMD();
00033         timeout=3;
00034         getreply();   
00035         pc.printf(buf);
00036 
00037         pc.printf("\n---------- Get IP's ----------\r\n"); 
00038         strcpy(snd, "AT+CIFSR\r\n");
00039         SendCMD();
00040         timeout=2;
00041         getreply(); 
00042         pc.printf(buf);
00043     }    
00044      
00045 }
00046 
00047 // Sets new ESP8266 baurate, change the esp.baud(xxxxx) to match your new setting once this has been executed
00048 void ESPsetbaudrate()
00049 {
00050     strcpy(snd, "AT+CIOBAUD=115200\r\n");   // change the numeric value to the required baudrate
00051     SendCMD();    
00052 }    
00053 
00054 //  +++++++++++++++++++++++++++++++++ This is for ESP8266 config only, run this once to set up the ESP8266 +++++++++++++++
00055 void ESPconfig()
00056 {
00057 
00058     pc.printf("---------- Starting ESP Config ----------\r\n\n");
00059     wait(2);
00060     pc.printf("---------- Reset & get Firmware ----------\r\n");
00061     strcpy(snd,"AT+RST\r\n");
00062     SendCMD();
00063     timeout=2;
00064     getreply();
00065     pc.printf(buf);
00066     
00067     wait(1);   
00068    
00069     pc.printf("\n---------- Get Version ----------\r\n");
00070     strcpy(snd,"AT+GMR\r\n");
00071     SendCMD();
00072     timeout=1;
00073     getreply();
00074     pc.printf(buf);    
00075     
00076     wait(1);
00077         
00078     // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
00079     pc.printf("\n---------- Setting Mode ----------\r\n");
00080     strcpy(snd, "AT+CWMODE=1\r\n");
00081     SendCMD();
00082     timeout=1;
00083     getreply();
00084     pc.printf(buf);
00085     
00086     wait(1);
00087     
00088     // set CIPMUX to 0=Single,1=Multi 
00089     pc.printf("\n---------- Setting Connection Mode ----------\r\n");
00090     strcpy(snd, "AT+CIPMUX=1\r\n"); 
00091     SendCMD();
00092     timeout=1;
00093     getreply();
00094     pc.printf(buf);
00095     
00096     wait(1);
00097     
00098     pc.printf("\n---------- Listing Acces Points ----------\r\n");
00099     strcpy(snd, "AT+CWLAP\r\n");
00100     SendCMD();
00101     timeout=3;
00102     getreply();   
00103     pc.printf(buf);
00104     
00105     wait(1);    
00106     
00107     pc.printf("\n---------- Connecting to AP ----------\r\n");
00108     pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
00109     strcpy(snd, "AT+CWJAP=\"");
00110     strcat(snd, ssid);
00111     strcat(snd, "\",\"");
00112     strcat(snd, pwd);
00113     strcat(snd, "\"\r\n");   
00114     SendCMD();
00115     timeout=8;
00116     getreply();    
00117     pc.printf(buf);
00118     
00119     wait(5);
00120     
00121     pc.printf("\n---------- Get IP's ----------\r\n"); 
00122     strcpy(snd, "AT+CIFSR\r\n");
00123     SendCMD();
00124     timeout=2;
00125     getreply(); 
00126     pc.printf(buf);
00127     
00128     wait(1);
00129     
00130     pc.printf("\n---------- Get Connection Status ----------\r\n"); 
00131     strcpy(snd, "AT+CIPSTATUS\r\n");
00132     SendCMD();
00133     timeout=2;
00134     getreply(); 
00135     pc.printf(buf);   
00136     
00137     pc.printf("\n\n\n  If you get a valid IP, ESP8266 has been set up.\r\n");
00138     pc.printf("  Run this if you want to reconfig the ESP8266 at any time.\r\n");
00139 } 
00140 
00141 void SendCMD()
00142 {    
00143     esp.printf("%s", snd);    
00144 } 
00145 
00146 void getreply()
00147 {    
00148     memset(buf, '\0', sizeof(buf));
00149     t.start();
00150     ended=0;count=0;
00151     while(!ended) {
00152         if(esp.readable()) {
00153             buf[count] = esp.getc();count++;
00154             }
00155         if(t.read() > timeout) {
00156                 ended = 1;t.stop();t.reset();
00157             }
00158         }   
00159 }              
00160