main.cpp

00001 #include "mbed.h"
00002 #include "STM32F4_RNG.h"
00003 #include "DHT.h"
00004 #include "BMP180.h"
00005 Serial pc(USBTX, USBRX);
00006 Serial esp(D8, D2); // tx D8, rx D2
00007 DigitalOut reset(D4);
00008 Timer t;
00009 
00010 STM32F4_RNG RANDOM1;
00011 
00012 int mycount,ended,timeout;
00013 char buf[1024];
00014 char snd[255];
00015 char ssid[32] = "King5";     // enter WiFi router ssid inside the quotes
00016 char pwd [32] = "88888888"; // enter WiFi router password inside the quotes
00017 
00018 char apiKey[32] = "UADVBX13ELBYAO7M";
00019 
00020 unsigned long ranval;
00021 
00022 #define TEMPVAL 23
00023 #define HUMIVAL 67
00024 #define RAYVAL 45
00025 #define PREVAL 340
00026 
00027 int tempVal = 23;
00028 int humiVal = 67;
00029 int rayVal = 45;
00030 int pressVal = 340;
00031 unsigned long randVal;
00032 unsigned char shortrandVal= 0;
00033 float fhumi,ftemp,fray,fpress;
00034 
00035 
00036 void SendCMD(),getreply(),ESPconfig(),ESPsetbaudrate(),HTTPConfig(),PostData();
00037 AnalogIn analog_value(A0);
00038 
00039 
00040 
00041 DHT devDht(D7,DHT11);
00042 BMP180 bmp180(PB_14, PB_13);
00043 
00044 
00045 
00046 int main()
00047 {
00048     reset=0; //hardware reset for 8266
00049     pc.baud(115200);  // set what you want here depending on your terminal program speed
00050     pc.printf("\f\n\r-------------ESP8266 Hardware Rese444t-------------\n\r");
00051     wait(0.5);
00052     reset=1;
00053     timeout=2;
00054     getreply();
00055     esp.baud(115200);   // change this to the new ESP8266 baudrate if it is changed at any time.
00056     //ESPsetbaudrate();   //******************  include this routine to set a different ESP8266 baudrate  ******************
00057     //ESPconfig();        //******************  include Config to set the ESP8266 configuration  ***********************
00058     
00059 
00060     HTTPConfig();
00061     
00062  
00063     // continuosly get AP list and IP
00064     while(1)
00065     {
00066        //pc.printf("get data from server\r\n");
00067 
00068      
00069        PostData();
00070        
00071         
00072  
00073     }
00074 
00075 }
00076 // Sets new ESP8266 baurate, change the esp.baud(xxxxx) to match your new setting once this has been executed
00077 void ESPsetbaudrate()
00078 {
00079     strcpy(snd, "AT+CIOBAUD=115200\r\n");   // change the numeric value to the required baudrate
00080     SendCMD();
00081 }
00082 //  +++++++++++++++++++++++++++++++++ This is for ESP8266 config only, run this once to set up the ESP8266 +++++++++++++++
00083 void ESPconfig()
00084 {
00085 
00086 }
00087 void SendCMD()
00088 {
00089     esp.printf("%s", snd);
00090 }
00091 void getreply()
00092 {
00093     memset(buf, '\0', sizeof(buf));
00094     t.start();
00095     ended=0;
00096     mycount=0;
00097     while(!ended) {
00098         if(esp.readable()) {
00099             buf[mycount] = esp.getc();
00100             mycount++;
00101         }
00102         if(t.read() > timeout) {
00103             ended = 1;
00104             t.stop();
00105             t.reset();
00106         }
00107     }
00108     buf[mycount]=0;
00109     pc.printf("At respon:%s\r\n",buf);
00110     
00111     
00112 }
00113 
00114 void HTTPConfig()
00115 {
00116     pc.printf("\n---------- Get Version ----------\r\n");
00117     strcpy(snd,"AT+GMR\r\n");
00118     SendCMD();
00119     timeout=4;
00120     getreply();
00121     pc.printf(buf);
00122     wait(3);  
00123     // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
00124     pc.printf("\n---------- Setting Mode ----------\r\n");
00125     strcpy(snd, "AT+CWMODE_DEF=1\r\n");
00126     SendCMD();
00127     timeout=4;
00128     getreply();
00129     pc.printf(buf);
00130     wait(2);  
00131     
00132     pc.printf("\n---------- Connecting to AP ----------\r\n");
00133     pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
00134     strcpy(snd, "AT+CWJAP_DEF=\"");
00135     strcat(snd, ssid);
00136     strcat(snd, "\",\"");
00137     strcat(snd, pwd);
00138     strcat(snd, "\"\r\n");
00139     SendCMD();
00140     timeout=10;
00141     getreply();
00142     pc.printf(buf);
00143     wait(5);
00144   
00145     pc.printf("\n-----------set to auto connect -----\r\n");
00146     strcpy(snd,"AT+CWAUTOCONN=1\r\n");
00147     SendCMD();
00148     timeout=4;
00149     getreply();
00150     pc.printf(buf);
00151     wait(2); 
00152  
00153      pc.printf("\n-----------set sigle connect -----\r\n");
00154     strcpy(snd,"AT+CIPMUX=0\r\n");
00155     SendCMD();
00156     timeout=4;
00157     getreply();
00158     pc.printf(buf);
00159     wait(2); 
00160  
00161     pc.printf("\n------------connect to server --------\r\n");
00162     strcpy(snd,"AT+CIPSTART=\"TCP\",\"api.thingspeak.com\",80\r\n");  
00163     SendCMD();
00164     timeout=4;
00165     getreply();
00166     pc.printf(buf);
00167     wait(2); 
00168   
00169  
00170     pc.printf("\n------------set to touchuan --------\r\n");  
00171     strcpy(snd,"AT+CIPMODE=1\r\n");
00172     SendCMD();
00173     timeout=4;
00174     getreply();
00175     pc.printf(buf);
00176     wait(2); 
00177     
00178     pc.printf("\n-----------starting send--------\r\n");
00179     strcpy(snd,"AT+CIPSEND\r\n");       
00180     SendCMD();
00181     timeout=4;
00182     getreply();
00183     pc.printf(buf);
00184     wait(2); 
00185     
00186     
00187 
00188     
00189 }
00190 char postStr[256];
00191 void PostData()
00192 {
00193        int len;
00194         
00195         
00196         if(devDht.readData() == ERROR_NONE)
00197         {
00198             fhumi = devDht.ReadHumidity();
00199             ftemp = devDht.ReadTemperature(CELCIUS);
00200             pc.printf("temp:%4.1f\thumi:%4.1f\n",ftemp,fhumi);
00201         }      
00202         fray = analog_value.read()*3300;
00203         
00204         bmp180.normalize(); 
00205         fpress = bmp180.read_pressure();
00206         //pressVal = bmp180.read_temperature();
00207        
00208        wait(2); 
00209        //len = sprintf(snd,"GET https://api.thingspeak.com/update?api_key=07A5WIB5QT14WRGV&field1=%d&field2=%d&field3=%d&field4=%d\r\n",tempVal,humiVal,pressVal,rayVal); 
00210        len = sprintf(snd,"GET https://api.thingspeak.com/update?api_key=07A5WIB5QT14WRGV&field1=%.1f&field2=%.1f&field3=%.1f&field4=%.2f\r\n",ftemp,fhumi,fpress,fray); 
00211        
00212        SendCMD(); 
00213  
00214        timeout=10;
00215        getreply();
00216        pc.printf(buf);
00217        
00218        pc.printf("\r\n%s",snd);
00219        wait(28);     
00220     
00221 }
00222