Revision 15:a557a4c85e54, committed 2021-01-11

Comitter:

mchheta

Date:

Mon Jan 11 17:48:18 2021 +0000

Parent:

14:d71b1aa3c8bf

Commit message:

This is for Monil's Thesis Project at IAC-IUPUI

Changed in this revision

--- a/SDFileSystem.lib	Tue Feb 23 03:50:39 2016 +0000
+++ b/SDFileSystem.lib	Mon Jan 11 17:48:18 2021 +0000
@@ -1,1 +1,1 @@
-http://developer.mbed.org/users/mbed_official/code/SDFileSystem/#7b35d1709458
+https://os.mbed.com/users/mchheta/code/SDFileSystem/#bb63540d8676

--- a/main.cpp	Tue Feb 23 03:50:39 2016 +0000
+++ b/main.cpp	Mon Jan 11 17:48:18 2021 +0000
@@ -1,106 +1,798 @@
 
-#include "mbed.h"           
-#include "RA8875.h"         
-#include "Keypad.h"
+#include "mbed.h"
+#include <math.h>
+#include <string.h>
+#include "SDFileSystem.h" 
+#include <iostream>
+#include <string>
+#include "rtos.h"
+# define FileName "/sd/Backup.txt"
+using namespace std;
+
+
+SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");                                  //SD card
+Serial pc(USBTX, USBRX );                                                       //Serial Communication
+Serial esp(PTC17, PTC16); // tx, rx (Wifi)
+AnalogIn Port[]={PTB2,PTB3,PTB10, PTB11, PTC11, PTC10, PTC2, PTC0,PTC9, PTC8}; //Define sensor pins
+float PortVal[10], timeout, Port_Multiplier[11];
+char buf[1024], snd[1024], text[1024], cpyStr[1024], Port_Description[11][100];
+//char Board_specs[10][50];// Board_specs[1]= Board-id, Board_specs[2]=WIFI ssid, Board_specs[3]=Wifi-Password,Board_specs[4]=Database TableName. 
+char Board_specs[10][50]; //= {"IAC_Board3", "ENGR-IOT", "engr-iot",  "sensor_readings"};
+int  rTime,bufcnt,lineCnt,prtCnt,ended,Multiplier,Port_SensorID[11], brdspCnt=0, count = 0;
+char port[10][10] = {"Port_1","Port_2","Port_3","Port_4","Port_5","Port_6","Port_7","Port_8","Port_9","Port_10"};
+Timer t;
+int port_number;
+float port_value;
+//char ssid[32] = "iPhone";                                                     // enter WiFi router ssid inside the quotes
+//char pwd [32] = "sl197197";
+//char ssid[32] = "ENGR-IOT";                                                     // enter WiFi router ssid inside the quotes
+//char pwd [32] = "engr-iot";
+//char ssid[32] = "BatCave";                                                     // enter WiFi router ssid inside the quotes
+//char pwd [32] = "bringyourownbeer232";
+char ssid[32] ;                                                     // enter WiFi router ssid inside the quotes
+char pwd [32] ;
+char wifiIP[32];
+
+void SendCMD(),getreply(), TCP_Boardspecs(), TCP_IPSend(), TCP_DataSend(), SDcrdRead(), Backup(char*),SendBackupData();
+char readConfigText();
+float UnitConversion(int Sens_ID);
+char *SensorName(int Sens_ID);
+ FILE * fp;
+ FILE * fp2;
+ 
+ DigitalOut Relay1(PTD2), Relay2(PTD0), Relay3(PTC4), Relay4(PTC12);
+ time_t seconds = time(NULL);
+
+ 
+/*This function parses the SD Card Config File*/
+
+void SDcrdRead(void){
+    //FILE * fp;
+    
+    printf("\r\nReading from SD card...\r\n\n\n");
+    fp = fopen("/sd/IAC_Config_File.txt", "rb");
+    if (fp != NULL) {        
+        readConfigText();        
+        fclose(fp);
+        printf(" \r\n\r\n\r\nRead Successfully!\r\n\r\n\r\n");
+        printf(" \r\n\r\n\r\n ---- Config File ---- \r\n\r\n\r\n");
+        printf("%s\n", text);
+        printf(" \r\n\r\n\r\n ---- End of Config File ---- \r\n\r\n\r\n");
+    } 
+    else {
+        printf("\nReading Failed!\r\n");
+    }
+
+}
+
+/*This function is used to rename a file in SD Card.*/
+
+int file_rename(const char *oldfname, const char *newfname) {
+    int retval = 0;
+    int ch;
+ 
+    FILE *fpold = fopen(oldfname, "r");   // src file
+    FILE *fpnew = fopen(newfname, "w");   // dest file
+    
+    while (1) {                   // Copy src to dest  
+        ch = fgetc(fpold);        // until src EOF read. 
+        if (ch == EOF) break;
+        fputc(ch, fpnew);  
+    }
+    
+    fclose(fpnew);
+    fclose(fpold);
+ 
+    fpnew = fopen(newfname, "r"); // Reopen dest to insure
+    if(fpnew == NULL) {           // that it was created.
+        retval = (-1);            // Return Error.
+    } 
+    else {
+        fclose(fpnew);  
+        remove(oldfname);         // Remove original file.
+        retval = (0);             // Return Success.
+    }
+    return (retval);
+}
+
+/*This function is used to copy contents of one file in SD card to another file in SD card*/
+
+int file_copy (const char *src, const char *dst) {
+    int retval,co = 0;
+    int ch;
+ 
+    FILE *fpsrc = fopen(src, "r");   // src file
+    FILE *fpdst = fopen(dst, "w");   // dest file
+    
+    while (1) {                  // Copy src to dest
+        ch = fgetc(fpsrc);       // until src EOF read.
+        if (ch == EOF) break;
+        if(co==1)co++;
+        else fputc(ch, fpdst);  
+    }
+    fclose(fpsrc);  
+    fclose(fpdst);
+  
+    fpdst = fopen(dst, "r");     // Reopen dest to insure
+    if(fpdst == NULL) {          // that it was created.
+        retval = (-1);           // Return error.
+    } 
+    else {
+        fclose(fpdst); 
+        retval = (0);            // Return success.
+    }
+    return (retval);
+}
+
+/* This function extracts essential information from SD Card Config file */
+char readConfigText()
+{
+    memset(buf, '\0', sizeof(buf));
+    t.start();
+    ended=0;
+    bufcnt=0;
+    lineCnt=0;
+    prtCnt =0;    
+    while(true) {        
+        char C = fgetc(fp);
+        //if(t.read() <= timeout) {
+        buf[bufcnt] = C; 
+        bufcnt++;           
+        //printf(buf);
+        if(feof(fp)){
+            break;        
+        }            
+        if(C == '\n'){
+            //buf[bufcnt] = '\0';
+            lineCnt++;                 
+            strcpy(snd,buf);
+            strcat(text,snd);
+            if(buf[0]=='B'){                
+                const char s[2] = ":";
+                char *token;
+               
+                /* get the first token */
+                token = strtok(buf, s);
+                /* get the other tokens there*/
+                while( token != NULL ) {
+                      brdspCnt++;
+                      strcpy(Board_specs[brdspCnt],token);
+                      printf( " Boardspec[%d] = %s\r\n\n",brdspCnt, Board_specs[brdspCnt] );
+                    
+                      token = strtok(NULL, s);
+                }
+                
+               
+                
+                
+            }
+            else if(buf[0]=='P'){
+                prtCnt++;                
+                if (prtCnt<10){                    
+                    Port_SensorID[prtCnt]=int(buf[9]-'0');
+                    Port_Multiplier[prtCnt]= UnitConversion(Port_SensorID[prtCnt]);
+                    char *senStr = SensorName(Port_SensorID[prtCnt]);
+                    strcpy(Port_Description[prtCnt],senStr);                   
+                    
+                    printf("%d  %0.2f    %s\r\n",Port_SensorID[prtCnt],Port_Multiplier[prtCnt],Port_Description[prtCnt]);
+                }
+                else{
+                    Port_SensorID[prtCnt]=int(buf[10]-'0');
+                    Port_Multiplier[prtCnt]= UnitConversion(Port_SensorID[prtCnt]);
+                    char *senStr = SensorName(Port_SensorID[prtCnt]);
+                    strcpy(Port_Description[prtCnt],senStr);
+                    
+                    printf("%d  %0.2f    %s\r\n",Port_SensorID[prtCnt],Port_Multiplier[prtCnt],Port_Description[prtCnt]);
+                }
+                    
+            }
+            //printf(text); 
+            memset(buf, '\0', sizeof(buf));
+            bufcnt = 0;
+        }        
+        
+    }
+    
+    printf("\r\n End of text file \r\n");
+    printf("\r\nLine Count %d\r\n",lineCnt);
+}
+
+/*This function returns the multiplying factor for sensor. It helps converting raw value to standard units. Sensor ID is available in SD Card */
+
+float UnitConversion(int Sens_ID){
+    switch (Sens_ID){
+        case 0 :    
+            Multiplier = 0.0;
+            break;
+        case 1 :    
+            Multiplier = 2000.0;
+            break;
+        case 2 :
+            Multiplier = 140;
+            break;
+        case 3 :
+            Multiplier = 27.85;
+            break;
+        case 4 :
+            Multiplier = 50.0;
+            break;
+        case 5 :
+            Multiplier = 50.0;
+            break;
+        case 6 :
+            Multiplier = 240.0;
+            break;
+        case 7 :
+            Multiplier = 100.0;
+            break;
+        case 8 :
+            Multiplier = 100;
+            break;       
+        }
+    return Multiplier;
+}
+
+/* This function returns name of the sensor based on Sensor ID */
+char *SensorName(int Sens_ID){
+    
+    static char *strng ;
+    //memset(strng, '\0', sizeof(strng));
+    
+    switch (Sens_ID){
+        case 0 :
+            strng = "Null";
+            break;
+        case 1 :
+            strng = "Carbondioxide(ppm)";
+            break;
+        case 2 :
+            strng = "Current(0-100)Amps";
+            break;
+        case 3 :
+            strng = "Current(0-20)Amps";
+            break;
+        case 4 :
+            strng = "Temperature(0-50)Degree-Celsius";
+            break;
+        case 5 :
+            strng = "Temperature(0-50)Degree-Celsius";
+            break;
+        case 6 :
+            strng = "Pressure(PSIG)";
+            break;
+        case 7 :
+            strng = "Humidity(Percentage)";
+            break;
+        case 8 :
+            strng = "Compressed-Airflow(Percentage)";
+            break;       
+        }
+    return strng;
+}
+
+/*This function is used to send command to Wi-Fi module.  */
+void SendCMD()
+{
+    esp.printf("%s", snd);
+}
 
-#include "MyFont18x32.h"
-#include "BPG_Arial08x08.h"
-#include "BPG_Arial10x10.h"
-#include "BPG_Arial20x20.h"
-#include "BPG_Arial31x32.h"
-#include "BPG_Arial63x63.h"
+/*This function is used to receieve response from the Wi-Fi module */
+void getreply()
+{
+    memset(buf, '\0', sizeof(buf));
+    t.start();
+    ended=0;
+    count=0;
+    while(!ended) {
+        if(esp.readable()) {
+            buf[count] = esp.getc();
+            count++;
+        }
+        if(t.read() > timeout) {
+            ended = 1;
+            t.stop();
+            t.reset();
+        }
+    }
+}
+
+/* This function is used to configure Wi-Fi module. It also connects to the internet */
+void ESPconfig()
+{
+    wait(1);
+    strcpy(snd,"AT\r\n");
+    SendCMD();
+    wait(1);
+    strcpy(snd,"AT\r\n");
+    SendCMD();
+    wait(1);
+    strcpy(snd,"AT\r\n");
+    SendCMD();
+    timeout=1;
+    getreply();
+    wait(1);
+    pc.printf("\f---------- Starting ESP Config ----------\r\n\n");
+
+    pc.printf("---------- Reset & get Firmware ----------\r\n");
+    strcpy(snd,"AT+RST\r\n");
+    SendCMD();
+    timeout=5;
+    getreply();
+    pc.printf(buf);
+
+    wait(1);
+
+    pc.printf("\n---------- Get Version ----------\r\n");
+    strcpy(snd,"AT+GMR\r\n");
+    SendCMD();
+    timeout=4;
+    getreply();
+    pc.printf(buf);
+
+    wait(1);
+
+    // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
+    pc.printf("\n---------- Setting Mode ----------\r\n");
+    strcpy(snd, "AT+CWMODE=1\r\n");
+    SendCMD();
+    timeout=4;
+    getreply();
+    //getEspReply();
+    pc.printf(buf);
+
+    wait(2);
+
+    // set CIPMUX to 0=Single,1=Multi
+    pc.printf("\n---------- Setting Connection Mode ----------\r\n");
+    strcpy(snd, "AT+CIPMUX=1\r\n");
+    SendCMD();
+    timeout=4;
+    getreply();
+    //getEspReply();
+    pc.printf(buf);
+
+    wait(2);
+
+    /*pc.printf("\n---------- Listing Access Points ----------\r\n");
+    strcpy(snd, "AT+CWLAP\r\n");
+    SendCMD();
+    timeout=15;
+    getreply();
+    pc.printf(buf);
+
+    wait(2);*/
+
+    pc.printf("\n---------- Connecting to AP ----------\r\n");
+    pc.printf("ssid = %s   pwd = %s\r\n",Board_specs[2],Board_specs[3]);//,ssid,pwd);
+    strcpy(snd, "AT+CWJAP=\"");
+    strcat(snd, Board_specs[2]);
+    strcat(snd, "\",\"");/* Here (\") denotes inverted commas in strings */
+    strcat(snd, Board_specs[3]);
+    strcat(snd, "\"\r\n");
+    pc.printf(snd);
+    SendCMD();
+    timeout=10;
+    getreply();
+    //getEspReply();
+    pc.printf(buf);
+    
+
+    wait(5);
+
+    pc.printf("\n---------- Get IP's ----------\r\n");
+    strcpy(snd, "AT+CIFSR\r\n");
+    SendCMD();
+    timeout=3;
+    getreply();
+    pc.printf(buf);
+    memset(text, '\0', sizeof(text));
+    strcpy(text,buf);
+    //const char s[2] = ",";
+    char *token2;
+   
+    /* get the first token */
+    token2 = strtok(text, "\"");
+    token2 = strtok(NULL, "\"");
+    strcpy(wifiIP,token2);
+    //token2 = strtok(NULL, "\"");
+    pc.printf("\n\n%s\n\n",wifiIP);
+    //const char* ipData = string(buf);
+    //const char* msg="Hello World!"; 
+    //pc.printf(ipData);
+
+    wait(1);
+
+    pc.printf("\n---------- Get Connection Status ----------\r\n");
+    strcpy(snd, "AT+CIPSTATUS\r\n");
+    SendCMD();
+    timeout=5;
+    //getEspReply();
+    getreply();
+    pc.printf(buf);
 
-#include "SDFileSystem.h" 
-#include "FATFileSystem.h" 
+    pc.printf("\n\n\n  If you get a valid (non zero) IP, ESP8266 has been set up.\r\n");
+    pc.printf("  Run this if you want to reconfig the ESP8266 at any time.\r\n");
+    pc.printf("  It saves the SSID and password settings internally\r\n");
+    wait(1);
+    TCP_Boardspecs();
+}
+void reconnect()
+{
+    pc.printf("\n---------- Connecting to AP ----------\r\n");
+    pc.printf("ssid = %s   pwd = %s\r\n",Board_specs[2],Board_specs[3]);//,ssid,pwd);
+    strcpy(snd, "AT+CWJAP=\"");
+    strcat(snd, Board_specs[2]);
+    strcat(snd, "\",\"");/* Here (\") denotes inverted commas in strings */
+    strcat(snd, Board_specs[3]);
+    strcat(snd, "\"\r\n");
+    pc.printf(snd);
+    SendCMD();
+    timeout=1;
+    getreply();
+    //getEspReply();
+    pc.printf(buf);
+}
+
+
+/* This function sends information to the server. The information consits of which sensor is connected to each port, board_id and Boot time */
+void TCP_Boardspecs(){
+    
+    pc.printf("\n---------- Start TCP_IP Connection with WAMP ----------\r\n");    
+    strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"134.68.70.220\",80\r\n");
+    //strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"192.168.1.2\",8181\r\n");     
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf(buf);
+
+    //wait();
+    
+    
+    
+    pc.printf("\n---------- Set TCP Data frame ----------\r\n");
+    memset(text, '\0', sizeof(text));
+    sprintf(text, "GET /IAC_BoardSpecs_DataLoad.php?boardId=IAC_%s&wifiIP=%s&Port1Sensor=%s&Port2Sensor=%s&Port3Sensor=%s&Port4Sensor=%s&Port5Sensor=%s&Port6Sensor=%s&Port7Sensor=%s&Port8Sensor=%s&Port9Sensor=%s&Port10Sensor=%s\r\n",Board_specs[1],wifiIP,Port_Description[1],Port_Description[2],Port_Description[3],Port_Description[4],Port_Description[5],Port_Description[6],Port_Description[7],Port_Description[8],Port_Description[9],Port_Description[10]);
+    int sz = strlen(text);
+    pc.printf("\n\n%d\r\n",sz);
+    sprintf(snd, "AT+CIPSEND=4,%d\r\n",sz);
+    //strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"184.106.153.149\",80\r\n") 
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf(buf);
+    
+
+    //wait(0.5);
+    
+    pc.printf("\n---------- Send Data frame ----------\r\n");
+    
+    strcpy(snd,text);
+    pc.printf(snd);    
+    
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf(buf);  
+    
+
+    //wait(1);
+    
+    pc.printf("\n---------- Close TCP/IP Connection ----------\r\n");
+    strcpy(snd, "AT+CIPCLOSE=5\r\n");
+    SendCMD(); 
+    timeout=0.1;
+    getreply();
+    pc.printf(buf);
+
+    //wait(2); 
+    
+    
+}
+
+/*This function sends sensor data to the server. Once the sensor data is read, this function is used to send the data to the server */
+void TCP_DataSend(){
+    
+    char buffer[32];
+    pc.printf("\n---------- Start TCP_IP Connection with WAMP ----------\r\n");    
+    strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"134.68.70.220\",80\r\n");
+    SendCMD(); 
+    timeout=0.1;
+    getreply();
+    pc.printf(buf);
+    pc.printf("\n---------- Set TCP Data frame ----------\r\n");
+    memset(text, '\0', sizeof(text));
+    
+    
+    
+    sprintf(text, "GET /Sensor_readings.php?Board_ID=IAC_%s&Port_ID=%s&Value=%0.2f&MCTime=%u\r\n", Board_specs[1], port[port_number], port_value,(unsigned int)seconds);
+    int sz1 = strlen(text);
+    pc.printf("\n\n%d\r\n",sz1);
+    sprintf(snd, "AT+CIPSEND=4,%d\r\n",sz1);
+    SendCMD();
+    pc.printf("\r \n\nGetting Reply\n\r\n"); 
+    timeout=0.1;
+    getreply();
+    pc.printf(buf);
+      
+    pc.printf("\n---------- Send Data frame ----------\r\n");
+    strcpy(snd,text);
+    pc.printf(snd); 
+    pc.printf("\n\n Getting Reply\n\r\n");      
+    SendCMD(); 
+    timeout=0.2;
+    getreply();
+    pc.printf(buf);
+    
+    /*If the response from wi-fi module is an error, the sensor data is stored as backup data in SD card. It also attempts to reconnect to the server */
+     if(strstr(buf,"ERROR")!=0 ||strstr(buf,"busy")!=0 || strstr(buf,"404 Not Found")!=0)
+    {
+        Backup(snd);
+        //ESPconfig();
+        reconnect();
+    }
+    
+    /*Based on the server response, actuation of relay is done here */
+    if(strstr(buf,"Relay 1=on")!=0)
+        Relay1=1;
+    else if(strstr(buf,"Relay 1=off")!=0)
+        Relay1=0;
+    
+    if(strstr(buf,"Relay 2=on")!=0)
+        Relay2=1;
+    else if(strstr(buf,"Relay 2=off")!=0)
+        Relay2=0;
+    
+    if(strstr(buf,"Relay 3=on")!=0)
+        Relay3=1;
+    else if(strstr(buf,"Relay 3=off")!=0)
+        Relay3=0;
+    
+    if(strstr(buf,"Relay 4=on")!=0)
+        Relay4=1;
+    else if(strstr(buf,"Relay 4=off")!=0)
+        Relay4=0;
+        
+    /* get the first token */
+   
+
+    //wait(1);
+
+    pc.printf("\n---------- Close TCP/IP Connection ----------\r\n");
+    strcpy(snd, "AT+CIPCLOSE=5\r\n");
+    SendCMD(); 
+    timeout=0.1;
+    //getreply();
+    pc.printf(buf);
+    
+    /*If the response from the server is as expected, the command attempts to send backup data from the SD Card */
+ if(strstr(buf,"Relay")!=0)
+ {
+        //for(int i=0;i<10;i++)
+        //{
+            SendBackupData();  
+        //}
+    }
+}
 
 
 
-//LocalFileSystem local("local");     // Because I want <PrintScreen>
-// Localfile system is not avail on K64F, but SD card is.
-SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
+/*This function is used to extract particular information from string. For example, information enclosed between < and > symbol will be extracted into a string */
+std::string extract(const std::string& str, char beg, char end)
+{
+    std::size_t begPos ;
+    if ( (begPos = str.find(beg)) != std::string::npos )
+    {
+        std::size_t endPos ;
+        if ( (endPos = str.find(end, begPos)) != std::string::npos && endPos != begPos+1 )
+            return str.substr(begPos+1, endPos-begPos-1) ;
+    }
 
-Serial pc(USBTX, USBRX);            // And a little feedback
+    return std::string() ;
+}
+
+/*This function is used to retrieve current time from the web */
+int retriveTime()
+{
+    
+    pc.printf("\n---------- Start TCP_IP Connection with WAMP ----------\r\n");    
+    strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"134.68.70.220\",80\r\n");
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf(buf);
 
-RA8875 lcd(PTD2, PTD3, PTD1, PTD0, NC, "tft");    // MOSI, MISO, SCK, /ChipSelect, /reset, name
-Keypad kp(lcd);                                  // Associate Virtual keypad with the RA8875 TFT
-
-
-void CalibrateTS(void)
-{
-    FILE * fh;
-    tpMatrix_t matrix;
-    RetCode_t r;
+    //wait();
+    
+    
+    
+    pc.printf("\n---------- Set TCP Data frame ----------\r\n");
+    memset(text, '\0', sizeof(text));
+    //sprintf(text, "GET /test1.php?\r\n");
+    sprintf(text, "GET /TimeQuery.php?\r\n");
+    int sz = strlen(text);
+    pc.printf("\n\n%d\r\n",sz);
+    sprintf(snd, "AT+CIPSEND=4,%d\r\n",sz);
+    //strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"184.106.153.149\",80\r\n") 
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf(buf);
+    
+    
+    pc.printf("\n---------- Send Data frame ----------\r\n");
+    
+    strcpy(snd,text);
+    pc.printf(snd);    
+    
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf("Start");
+    
+    
+    pc.printf(buf);  
+    pc.printf("End");
+    
+    string time = extract(buf,'>','<');
+    int rTime = atoi(time.c_str());
+    //int rtime = stoi(time);
+    pc.printf("Time = %d",rTime);
+    pc.printf("\n---------- Close TCP/IP Connection ----------\r\n");
+    strcpy(snd, "AT+CIPCLOSE=5\r\n");
  
-    r = lcd.TouchPanelCalibrate("Calibrate the touch panel", &matrix);
-    if (r == noerror) {
-        fh = fopen("/sd/tpcal.cfg", "wb");
-        if (fh) {
-            fwrite(&matrix, sizeof(tpMatrix_t), 1, fh);
-            fclose(fh);
-        } else {
-        }
-    } else {
-    }
+    SendCMD(); 
+    timeout=0.5;
+    getreply();
+    pc.printf(buf);
+    return rTime;
 }
- 
- 
-void InitTS(void)
+
+/*This function is responsible to open TCP/IP connection and send the backup data to server */ 
+void Senddta(char bckp[])
 {
-    FILE * fh;
-    tpMatrix_t matrix;
- 
-    fh = fopen("/sd/tpcal.cfg", "rb");
-    if (fh) {
-        fread(&matrix, sizeof(tpMatrix_t), 1, fh);
-        fclose(fh);
-        lcd.TouchPanelSetMatrix(&matrix);
-        pc.printf("Touch Panel calibration set\r\n");
-    } else {
-        CalibrateTS();
+ if(strlen(bckp)>1){
+  pc.printf("\n---------- Start TCP_IP Connection with WAMP ----------\r\n");    
+    strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"134.68.70.220\",80\r\n");
+    //strcpy(snd, "AT+CIPSTART=4,\"TCP\",\"149.165.231.70\",8660\r\n");
+    SendCMD(); 
+    timeout=0.1;
+    getreply();
+    pc.printf(buf);
+    pc.printf("\n---------- Set TCP Data frame ----------\r\n");
+    memset(text, '\0', sizeof(text));
+    
+    char buffer[32];
+        //strftime(buffer, 32,"%Y%m%d%H%M%S\n", localtime(&seconds));
+        //strftime(buffer, 32,"%s\n", localtime(&seconds));
+        //printf("Time as a custom formatted string = %s", buffer);
+     sprintf(text, bckp);
+    int sz1 = strlen(text);
+    pc.printf("\n\n%d\r\n",sz1);
+    sprintf(snd, "AT+CIPSEND=4,%d\r\n",sz1);
+    SendCMD();
+    pc.printf("\r \n\nGetting Reply\n\r\n"); 
+    timeout=0.2;
+    getreply();
+    pc.printf(buf);
+    pc.printf("\n---------- Send Backup Data frame ----------\r\n");
+    strcpy(snd,bckp);
+    pc.printf(snd); 
+    pc.printf("\n\n Getting Reply\n\r\n");      
+    SendCMD(); 
+    timeout=0.1;
+    getreply();
+    pc.printf(buf);
+    }
+    //else
+        //wait(0.15);
+}
+
+/*In case the firmware is unable to send data to the server, this function stores data into SD Card */
+void Backup(char text[])
+{       fclose(fp);
+        pc.printf("Appending data to data file \r\n");
+        //fp = fopen("/sd/Backup.txt", "a");
+        if((fp=fopen("/sd/Backup.txt","a")) == NULL){
+            pc.printf("Could not open file");
+            fclose(fp);
+            fp=fopen("/sd/Backup.txt","w");
+            fclose(fp);
+            }
+        fclose(fp);
+        fp = fopen("/sd/Backup.txt", "a");
+        fprintf(fp, "%s", text);
+        pc.printf("\n\n%s\n\n", text);
+        //fputc('\n', fp);
+        fclose(fp);
+        wait(0.5);
     }
+    
+/*This function extracts data from backup file in SD Card. It passes data Senddta function which opens TCP/IP connection and sends data to server.
+  Once data is sent to the server, that particular sent data is deleted from Backup file. */
+void SendBackupData()
+{
+    char bckp[1024];
+    fp = fopen("/sd/Backup.txt","r");
+    //fp2 = fopen("/sd/temp.txt","w");
+    if(strlen(fgets(bckp, sizeof(bckp), fp)) < 10){
+        pc.printf("No Backup Data");
+        fclose(fp);
+        wait(1.5);
+        //remove("/sd/Backup.txt");
+        }
+        //fclose(fp);
+    else
+    {
+        fclose(fp);
+        fp = fopen("/sd/Backup.txt","r");
+        //for(int i=0;i<5;i++){
+            fgets(bckp, sizeof(bckp), fp);
+            pc.printf("%s", bckp); 
+        fclose(fp);
+        
+        //wait(2);
+            Senddta(bckp);
+      //}
+        fclose(fp);
+        int ctr = 0;
+        memset(bckp, '\0', sizeof(bckp));
+        //char c = fgetc(fp);
+        char copy[100];
+        //wait(3);
+        fp=fopen("/sd/Backup.txt","r");
+        fp2 = fopen("/sd/temp.txt","w");
+        while ((fgets(copy,sizeof(copy),fp))!=NULL) 
+        {
+            ctr++;
+            if(ctr==1)
+                pc.printf("Skip first line\r\n");
+            else
+                fputs(copy,fp2);    
+        }
+        //sprintf(copy,"\0");
+        //sprintf(bckp,"\0");    
+            //wait(2);
+            
+         
+        fclose(fp);
+        fclose(fp2);
+        remove("/sd/Backup.txt");
+        file_rename("/sd/temp.txt", "/sd/Backup.txt");
+        memset(copy, '\0', sizeof(copy));
+        }
 }
- 
-
 int main()
 {
-    char name1[20], name2[20];
- 
-    pc.baud(115200);                            
-    pc.printf("\r\nDev Keypad - Build " __DATE__ " " __TIME__ "\r\n");
- 
-    lcd.init();
-    lcd.foreground(Yellow);
-    lcd.background(Black);
-    lcd.puts(0,0, "RA8875 Soft Fonts - Build " __DATE__ " " __TIME__ "\r\n");
-    InitTS();
-    while(1) {
-        lcd.foreground(Yellow);
-        lcd.background(Black);
-        lcd.cls();
-        lcd.puts(0,20, "Enter username and password\r\n");
-        if (kp.GetString(name1, 20, "Username:")) {
-     pc.printf("PrintScreen activated ...\r\n");
-    RetCode_t r = lcd.PrintScreen(0,0,480,272,"/sd/file2.bmp");
-    pc.printf("  PrintScreen returned %d\r\n", r);
-            lcd.printf("username: %s\r\n", name1);
-             if (kp.GetString(name2, 20, "Password:", '*')) {
-                lcd.printf("password: %s\r\n", name2);
-                kp.Erase();
-                lcd.foreground(BrightRed);
-                lcd.background(Black);
-                lcd.cls();
-                lcd.SetTextFontSize(2);
-                lcd.SetTextCursor(0,30);
-                lcd.printf("username: %s\r\npassword: %s\r\n", name1, name2);
-                lcd.SetTextFontSize();
-                
-               
+    pc.baud(115200);
+    esp.baud(115200);
+    SDcrdRead();
+    
+    pc.printf("Board_specs[2] = %s and Board_specs[3]= %s \r\n", Board_specs[2], Board_specs[3]);
+    wait(2);
+    ESPconfig();
+    set_time(retriveTime());
+    
+    while (true) {
+        seconds = time(NULL);
+        //wait(1);
+        /*Loop to read and send data to server */
+        for(int i = 0; i <10; i++){
+            if(Port_Multiplier[i+1]==0)     //If no sensor attached, don't read data
+            {
+                }
+            else{
+                //seconds = time(NULL);
+                port_value=Port[i].read()*Port_Multiplier[i+1];     //Read data and convert raw value to standard units
+                port_number=i;
+                TCP_DataSend();                                     //Send data to the server
+                pc.printf(" %f",port_value);
+                }
             }
-        } else {
-            kp.Erase();
-            pc.printf("<esc>\r\n");
-        }
-        wait(5);
+            
+            //wait(4);
+            //fp = fopen("/sd/Backup.txt","r");
+            
+            
+            pc.printf("\n");
     }
-}
- 
\ No newline at end of file
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-rtos.lib	Mon Jan 11 17:48:18 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/teams/ST/code/mbed-rtos/#83895f30f8f2