main.cpp

00001 #include "mbed.h"
00002 #include "ESP8266.h"
00003 #include <string>
00004 #include <stdio.h>
00005 #include "GroveEarbudSensor.h"
00006 #define APIKEY SJYFHXQEDBQ75N91    //Put "Write key" of your channel in thingspeak.com 
00007 #define IP "184.106.153.149"       // IP Address of "api.thingspeak.com\"
00008 #define WIFI_SSID "vivo 1601"
00009 #define WIFI_PASS "bschitta"
00010 
00011 
00012 char snd[255],rcv[1000],snd_Data[255];
00013 float hrt;
00014 
00015 ESP8266 esp(PTC17, PTC16, 115200); // baud rate for wifi
00016 Serial pc(USBTX, USBRX);
00017 
00018 // callback for receiving heartrate values 
00019 void heartrateCallback(float heartrate,void *data) 
00020 {
00021          printf("Callback: heartrate = %.1f\r\n",heartrate);
00022 }  
00023 
00024 // Blinky
00025 DigitalOut led(LED1);
00026 
00027 // Our sensor as an InterruptIn
00028 InterruptIn sensor(D2);
00029 
00030 GroveEarbudSensor earbud(&sensor); 
00031 
00032 void esp_initialize(void);
00033 void esp_send(void);
00034 
00035 int main(void)
00036 {   
00037 pc.baud(115200);
00038     esp_initialize();
00039     
00040     // announce
00041     printf("Grove Earbud Sensor Example v1.0.0\r\n");
00042     
00043     // allocate the earbud sensor
00044     printf("Allocating earbud sensor instance...\r\n");
00045     
00046      // register our callback function     
00047      printf("registering callback...\r\n");     
00048      earbud.registerCallback(heartrateCallback); 
00049     
00050     // begin main loop
00051     printf("Beginning main loop...\r\n");
00052     while (true) 
00053     {
00054         // blink... 
00055         led = !led; 
00056         wait(1);
00057            
00058     // we can also call directly 
00059     printf("Direct: heartrate = %.1f\r\n", earbud.getHeartRate());
00060     
00061     esp_send();
00062     }
00063 }
00064 
00065 void esp_initialize(void)
00066 {
00067     //AT+CWJAP="vivo 1601","bschitta" ;
00068     
00069     pc.printf("Initializing ESP\r\n");
00070     pc.printf("Reset ESP\r\n");
00071     esp.Reset();                   //RESET ESP
00072     esp.RcvReply(rcv, 400);        //receive a response from ESP
00073     wait(2);
00074 
00075     strcpy(snd,"AT");
00076     esp.SendCMD(snd);
00077     pc.printf(snd);
00078     esp.RcvReply(rcv, 400);
00079     pc.printf(rcv);
00080     wait(2);
00081 
00082     strcpy(snd,"AT+CWMODE=1");
00083     esp.SendCMD(snd);
00084     pc.printf(snd);
00085     wait(2);
00086 
00087     strcpy(snd,"AT+CWJAP=\"");
00088     strcat(snd,WIFI_SSID);
00089     strcat(snd,"\",\"");
00090     strcat(snd,WIFI_PASS);
00091     strcat(snd,"\"");
00092 
00093     esp.SendCMD(snd);
00094     pc.printf(snd);
00095     wait(5);
00096     esp.RcvReply(rcv, 400);
00097     pc.printf("\n %s \n", rcv);
00098 
00099     strcpy(snd,"AT+CIPMUX=1");
00100     esp.SendCMD(snd);
00101     pc.printf(snd);
00102     esp.RcvReply(rcv, 400);
00103     pc.printf("\n %s \n", rcv);
00104 }
00105 
00106 void esp_send(void)
00107 {
00108     //ESP updates the Status of Thingspeak channel//
00109 
00110     strcpy(snd,"AT+CIPSTART=");
00111     strcat(snd,"\"TCP\",\"");
00112     strcat(snd,IP);
00113     strcat(snd,"\",80");
00114 
00115     esp.SendCMD(snd);
00116     pc.printf("Send\r\n%s",snd);
00117     esp.RcvReply(rcv, 1000);
00118     pc.printf("Receive\r\n%s",rcv);
00119     wait(2);
00120 
00121     hrt = earbud.getHeartRate();
00122     pc.printf("Sending this information to thingspeak.com \r\n");
00123     sprintf(snd,"GET https://api.thingspeak.com/update?api_key=SJYFHXQEDBQ75N91&field1=%f\r\n", hrt);
00124     //wait(5);
00125     //https://api.thingspeak.com/update?api_key=SJYFHXQEDBQ75N91&field1=%f\r\n", hrt
00126 
00127     int i=0;
00128     for(i=0; snd[i]!='\0'; i++);
00129     i++;
00130     char cmd[255];
00131 
00132     sprintf(cmd,"AT+CIPSEND=%d",i);           //Send Number of open connection and Characters to send
00133     esp.SendCMD(cmd);
00134     pc.printf("Send\r\n%s",cmd);
00135     while(i<=20 || rcv == ">")
00136     {
00137         esp.RcvReply(rcv, 1000);
00138         wait(100);
00139         i++;
00140     }
00141     pc.printf("Receive\r\n%s",rcv);
00142 
00143     esp.SendCMD(snd);       //Post value to thingspeak channel
00144     pc.printf("Send\r\n%s",snd);
00145 
00146     while(i<=20 || rcv == "OK") 
00147     {
00148         esp.RcvReply(rcv, 1000);
00149         wait(100);
00150         i++;
00151     }
00152     pc.printf("Receive\r\n%s",rcv);
00153     
00154 }
00155 
00156