Fixed Code for Automatic Irrigation with SMS DataLogger RTC

#include <SPI.h> //
#include <SD.h> //
#include <Wire.h> //
#include "RTClib.h" //
#include <SoftwareSerial.h>

int pumpRelayPin = 9;
int sensorPin = A0;
int sensorValue = 0;
int percent = 0;
unsigned long wateringDelay = 1000 *       1     ; //Time in Seconds
unsigned long readingDelay =  1000 *       5    ;

int pumpStatus = 0;


//SIM800L TX is connected to Arduino D7
#define SIM800L_TX_PIN 7

//SIM800L RX is connected to Arduino D6
#define SIM800L_RX_PIN 6

//Create software serial object to communicate with SIM800L
SoftwareSerial serialSIM800L(SIM800L_TX_PIN, SIM800L_RX_PIN);




// A simple data logger for the Arduino analog pins

// how many milliseconds between grabbing data and logging it. 1000 ms is once a second
#define LOG_INTERVAL  1000 // mills between entries (reduce to take more/faster data)
#define SYNC_INTERVAL 1000 // mills between calls to flush() - to write data to the card
uint32_t syncTime = 0; // time of last sync()
int buttonReading = 1;
#define ECHO_TO_SERIAL   1 // echo data to serial port
#define WAIT_TO_START    0 // Wait for serial input in setup()


RTC_DS1307 RTC; // define the Real Time Clock object

// for the data logging shield, we use digital pin 10 for the SD cs line
const int chipSelect = 10;

// the logging file
File logfile;

void error(char *str)
{
  Serial.print("error: ");
  Serial.println(str);

  while (1);
}

void setup() {
  Serial.begin(9600);
  SPI.begin();      // Initiate  SPI bus
  //Being serial communication witj Arduino and SIM800L
  serialSIM800L.begin(9600);
  delay(15000);
  Serial.println("Setup Complete!");

  pinMode(pumpRelayPin, OUTPUT);
  pinMode(sensorPin, INPUT);

  digitalWrite(pumpRelayPin, LOW);

#if WAIT_TO_START
  Serial.println("Type any character to start");
  while (!Serial.available());
#endif //WAIT_TO_START

  // initialize the SD card
  Serial.print("Initializing SD card...");
  // make sure that the default chip select pin is set to
  // output, even if you don't use it:
  pinMode(10, OUTPUT);
  //  pinMode(buttonPin, INPUT);
  // see if the card is present and can be initialized:
  if (!SD.begin(chipSelect)) {
    error("Card failed, or not present");
  }
  Serial.println("card initialized.");

  // create a new file
  char filename[] = "LOGGER00.CSV";
  for (uint8_t i = 0; i < 100; i++) {
    filename[6] = i / 10 + '0';
    filename[7] = i % 10 + '0';
    if (! SD.exists(filename)) {
      // only open a new file if it doesn't exist
      logfile = SD.open(filename, FILE_WRITE);
      break;  // leave the loop!
    }
  }

  if (! logfile) {
    error("couldnt create file");
  }

  Serial.print("Logging to: ");
  Serial.println(filename);

  // connect to RTC
  Wire.begin();
  if (!RTC.begin()) {
    logfile.println("RTC failed");
#if ECHO_TO_SERIAL
    Serial.println("RTC failed");
#endif  //ECHO_TO_SERIAL
  }


  logfile.println("Date-Time,RAW Values,Percent");
#if ECHO_TO_SERIAL
  Serial.println(" Date-Time \t\t\t RAW Value \t Percent");
#endif //ECHO_TO_SERIAL

}

void loop() {
  DateTime now = RTC.now();

  sensorValue = analogRead(sensorPin);
  percent = convertToPercent(sensorValue);

  Serial.println(pumpStatus);

  if (pumpStatus == 0 && percent < 90) {
    digitalWrite(pumpRelayPin, HIGH);
    sendSMSon();
    pumpStatus = 1;
    Serial.println("Text is Sent");
  }
  else if (pumpStatus == 1 && percent < 90) {
    digitalWrite(pumpRelayPin, HIGH);
    pumpStatus = 1;
    Serial.println(pumpStatus);
  }
  else if (pumpStatus == 1 && percent > 90) {
    digitalWrite(pumpRelayPin, LOW);
    sendSMSoff();
    pumpStatus = 0;
    Serial.println(pumpStatus);
  }

  printValuesToSerial();

  printValuesToSDcard();



  delay(readingDelay);

}
















void printValuesToSDcard() {
  DateTime now;
  // fetch the time
  now = RTC.now();
  // log time
  logfile.print('"');
  logfile.print(now.year(), DEC);
  logfile.print("/");
  logfile.print(now.month(), DEC);
  logfile.print("/");
  logfile.print(now.day(), DEC);
  logfile.print(" ");
  logfile.print(now.hour(), DEC);
  logfile.print(":");
  logfile.print(now.minute(), DEC);
  logfile.print(":");
  logfile.print(now.second(), DEC);
  logfile.print('"');
  delay(10);
  logfile.print(", ");
  logfile.print(sensorValue);
  delay(10);
  logfile.print(", ");
  logfile.print(percent);
  logfile.println();
  if ((millis() - syncTime) < SYNC_INTERVAL) return;
  syncTime = millis();
  // blink LED to show we are syncing data to the card & updating FAT!
  logfile.flush();
  delay(1000);
}



int convertToPercent(int value)
{
  int percentValue = 0;
  percentValue = map(value, 1023, 465, 0, 100);
  return percentValue;
}

void printValuesToSerial()
{
  DateTime now;
  // fetch the time
  now = RTC.now();
  Serial.print(' ');
  Serial.print(now.year(), DEC);
  Serial.print("/");
  Serial.print(now.month(), DEC);
  Serial.print("/");
  Serial.print(now.day(), DEC);
  Serial.print(" ");
  Serial.print(now.hour(), DEC);
  Serial.print(":");
  Serial.print(now.minute(), DEC);
  Serial.print(":");
  Serial.print(now.second(), DEC);
  Serial.print(' ');

  Serial.print("\t\t ");
  Serial.print(sensorValue);
  Serial.print("\t\t ");
  Serial.print(percent);
  Serial.print("%");
  Serial.println();
}



void sendSMSon() {

  Serial.println("Sending Text...");
  serialSIM800L.print("AT+CMGF=1\r"); // Set the shield to SMS mode
  delay(100);
  serialSIM800L.print("AT+CMGS=\"0556983765\"\r");
  delay(200);
  serialSIM800L.print("Water Pump is ON   ");
  serialSIM800L.print("Sensor Value:");
  serialSIM800L.print(sensorValue);
  serialSIM800L.print(" , Moisture:");
  serialSIM800L.print(percent);
  serialSIM800L.print("%");
  serialSIM800L.print("\r"); //the content of the message
  delay(500);
  serialSIM800L.print((char)26);//the ASCII code of the ctrl+z is 26 (required according to the datasheet)
  delay(100);
  serialSIM800L.println();
  Serial.println("Text Sent.");
  delay(500);

}


void sendSMSoff() {

  Serial.println("Sending Text...");
  serialSIM800L.print("AT+CMGF=1\r"); // Set the shield to SMS mode
  delay(100);
  serialSIM800L.print("AT+CMGS=\"0556983765\"\r");
  delay(200);
  serialSIM800L.print("Water Pump is OFF   ");
  serialSIM800L.print("Sensor Value:");
  serialSIM800L.print(sensorValue);
  serialSIM800L.print(" , Moisture:");
  serialSIM800L.print(percent);
  serialSIM800L.print("%");
  serialSIM800L.print("\r"); //the content of the message
  delay(500);
  serialSIM800L.print((char)26);//the ASCII code of the ctrl+z is 26 (required according to the datasheet)
  delay(100);
  serialSIM800L.println();
  Serial.println("Text Sent.");
  delay(500);

}