Diff: main.cpp

Revision:

0:0a8dbe4c0447

diff -r 000000000000 -r 0a8dbe4c0447 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 22 19:21:04 2019 +0000
@@ -0,0 +1,172 @@
+#include "mbed.h"
+#include "ESP8266.h"               
+#include <string>
+#include <stdio.h>
+// Grove Earbud Sensor include
+#include "GroveEarbudSensor.h"
+
+#define APIKEY SQ43V2ERAB2S42I3    //Put "Write key" of your channel in thingspeak.com 
+#define IP "184.106.153.149"       // IP Address of "api.thingspeak.com\"
+#define WIFI_SSID "ATTwXwjd7i"     // Home WIFI ID
+#define WIFI_PASS "cmvbfbjrw=+w"   // Home WIFI PASS WORD
+
+Serial pc(USBTX,USBRX);
+
+ESP8266 esp(PTC17, PTC16, 115200); // baud rate for wifi
+
+char snd[255],rcv[1000],snd_Data[255];           //snd= string used to send command to ESP 8266 wii and  rcv = string used to receive response from ESP8266 wifi module 
+
+void esp_initialize(void); // Function used to initialize ESP8266 wifi module 
+void esp_send(void);       // Function used to connect with thingspeak.com and update channel using ESP8266 wifi module 
+
+// Our sensor as an InterruptIn
+InterruptIn sensor(D2);
+
+// callback for receiving heartrate values
+void heartrateCallback(float heartrate,void *data) {
+    printf("Callback: heartrate = %.1f\r\n",heartrate);
+}
+
+// allocate the earbud sensor
+GroveEarbudSensor earbud(&sensor); 
+
+float RateofHeart; // Define Global variable for Heatrate detection
+
+
+
+DigitalOut heater(A1); // Set DigitalOut port for Alcohol Sensor
+AnalogIn Asensor(A0); // Set AnalogIn port for Alcohol Sensor
+
+float value = 0.0f; // Define Global variable for Alcohol detection
+
+
+int main(void) 
+{
+    
+    pc.baud(115200);           // Baud rate used for communicating with Tera-term on PC
+    
+    heater = 1;
+    
+    pc.printf("START\r\n");  // Starting point
+    
+    esp_initialize();
+    
+    // register our callback function
+    earbud.registerCallback(heartrateCallback);  
+
+    while (1) 
+    {   
+    
+        wait(5);
+
+        esp_send(); //Excute Send function to deliver detected data to Thingspeak website
+        
+    }
+}
+
+
+void esp_initialize(void) // This is the Initialization function as we defined above.
+{    
+    pc.printf("Initializing ESP\r\n"); 
+      
+    pc.printf("Reset ESP\r\n"); 
+    esp.Reset();                   //RESET ESP
+    esp.RcvReply(rcv, 400);        //receive a response from ESP
+    //pc.printf(rcv);          //Print the response onscreen 
+    wait(2);
+    
+    strcpy(snd,"AT");
+    esp.SendCMD(snd);  // Sends command to ESP8266. Receives the command string
+    pc.printf(snd);
+    //wait(2);
+    esp.RcvReply(rcv, 400);       // Receive reply until no character is received after a given timeout in miliseconds
+    pc.printf(rcv);      
+    wait(0.1);
+    
+    strcpy(snd,"AT+CWMODE=1");
+    esp.SendCMD(snd);
+    pc.printf(snd);
+    wait(2);
+
+    strcpy(snd,"AT+CWJAP=\"");
+    strcat(snd,WIFI_SSID);        // Send WIFI Account ID
+    strcat(snd,"\",\"");
+    strcat(snd,WIFI_PASS);        // Send WIFI Password
+    strcat(snd,"\"");
+    
+    esp.SendCMD(snd);
+    pc.printf(snd);
+    wait(5);
+    esp.RcvReply(rcv, 400);       
+    pc.printf("\n %s \n", rcv); 
+    
+    strcpy(snd,"AT+CIPMUX=0");
+    esp.SendCMD(snd);
+    pc.printf(snd);
+    //wait(2);
+    esp.RcvReply(rcv, 400);       
+    pc.printf("\n %s \n", rcv); 
+
+}
+
+
+void esp_send(void) // This is the Initialization function as we defined above.
+{
+    //Get the rate of Heart by earbud,getHeartRate function
+    RateofHeart = earbud.getHeartRate();
+    
+    //Set the pulse value to 0 to get the data
+    heater = 0;
+    //Get the value of Alcohol rate sensed by Alcohol sensor
+    value = 1-Asensor;
+    
+    
+    
+    //ESP updates the Status of Thingspeak channel//
+    
+    strcpy(snd,"AT+CIPSTART=");
+    strcat(snd,"\"TCP\",\"");
+    strcat(snd,IP);
+    strcat(snd,"\",80");
+    
+    esp.SendCMD(snd); 
+    pc.printf("S\r\n%s",snd);
+    //wait(2);                                                    
+    esp.RcvReply(rcv, 1000);
+    pc.printf("R\r\n%s",rcv);
+    wait(1);
+    
+    pc.printf("Alcohol concentration is: %2.2f\n", value); // Print out the Alcohol concentration on the Tera Term 
+    pc.printf("heart rate is: %f\r\n", RateofHeart); // Print out the Heart Rate on the Tera Term 
+    sprintf(snd,"GET https://api.thingspeak.com/update?api_key=SQ43V2ERAB2S42I3&field1=%f&field2=%f\r\n",RateofHeart);
+    //Transfer Heart rate and Alcohol concentration to designated Thingspeak ID and display on field 1 chart and field 2 chart
+    
+    
+    int i=0;
+    for(i=0;snd[i]!='\0';i++);
+    i++;
+    char cmd[255];
+    
+    sprintf(cmd,"AT+CIPSEND=%d",i);                                       //Send Number of open connection and Characters to send 
+    esp.SendCMD(cmd);
+    pc.printf("S\r\n%s",cmd);
+    while(i<=20 || rcv == ">")
+    {
+        esp.RcvReply(rcv, 1000);
+        wait(100);
+        i++;
+    }
+    pc.printf("R\r\n%s",rcv);
+    
+    esp.SendCMD(snd);                                                      //Post value to thingspeak channel
+    pc.printf("S\r\n%s",snd);
+    
+    while(i<=20 || rcv == "OK")
+    {
+        esp.RcvReply(rcv, 1000);
+        wait(100);
+        i++;
+    }
+    pc.printf("R\r\n%s",rcv);
+    
+}
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