//int resval = 0; // holds the value
//int respin = A5; // sensor pin used

int sensorPin = A0;
int sensorValue = 0;
int percent = 0;
/*
LiquidCrystal Library – Hello World

Demonstrates the use a 16×2 LCD display. The LiquidCrystal
library works with all LCD displays that are compatible with the
Hitachi HD44780 driver. There are many of them out there, and you
can usually tell them by the 16-pin interface.

This sketch prints “Hello World!” to the LCD
and shows the time.

The circuit:
LCD RS pin to digital pin 12
LCD Enable pin to digital pin 11
LCD D4 pin to digital pin 5
LCD D5 pin to digital pin 4
LCD D6 pin to digital pin 3
LCD D7 pin to digital pin 2
LCD R/W pin to ground
LCD VSS pin to ground
LCD VCC pin to 5V
10K resistor:
ends to +5V and ground
wiper to LCD VO pin (pin 3)

Library originally added 18 Apr 2008
by David A. Mellis
library modified 5 Jul 2009
by Limor Fried (http://www.ladyada.net)
example added 9 Jul 2009
by Tom Igoe
modified 22 Nov 2010
by Tom Igoe
modified 7 Nov 2016
by Arturo Guadalupi

This example code is in the public domain.

http://www.arduino.cc/en/Tutorial/LiquidCrystalHelloWorld

*/

// include the library code:
#include <LiquidCrystal.h>

// initialize the library by associating any needed LCD interface pin
// with the arduino pin number it is connected to
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain
// REQUIRES the following Arduino libraries:
// – DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
// – Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor
#include “DHT.h”
#define DHTPIN 13 // Digital pin connected to the DHT sensor
// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 —
// Pin 15 can work but DHT must be disconnected during program upload.
// Uncomment whatever type you’re using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
// Initialize DHT sensor.
// Note that older versions of this library took an optional third parameter to
// tweak the timings for faster processors. This parameter is no longer needed
// as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);

// start the serial console

dht.begin();
// set up the LCD’s number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
// lcd.print(“hello!”);
}
void loop() {

// resval = analogRead(respin); //Read data from analog pin and store it to resval variable
//
// if (resval <= 100) {
// lcd.print(“Water Level: Empty”);
// }
// else if (resval > 100 && resval <= 300) {
// lcd.print(“Water Level: Low”);
// }
// else if (resval > 300 && resval <= 330) {
// lcd.print(“Water Level: Medium”);
// }
// else if (resval > 330) {
// lcd.print(“Water Level: High”);
// }
delay(1000);
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
// lcd.setCursor(0, 1);
// // print the number of seconds since reset:
// lcd.print(millis() / 1000);
// Wait a few seconds between measurements.
delay(5000);
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds ‘old’ (its a very slow sensor)
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)
float f = dht.readTemperature(true);
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t) || isnan(f)) {
lcd.print(F(“Failed to read from DHT sensor!”));
return;
// set up the LCD’s number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
// lcd.print(“hello!”);
}
// Compute heat index in Fahrenheit (the default)
float hif = dht.computeHeatIndex(f, h);
// Compute heat index in Celsius (isFahreheit = false)
float hic = dht.computeHeatIndex(t, h, false);

lcd.print(F(” Humidity:”));
lcd.print(h);

sensorValue = analogRead(sensorPin);
percent = convertToPercent(sensorValue);
printValuesToSerial();
delay(1000);
}

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

void printValuesToSerial()
{
// lcd.print(“\n\nAnalog Value: “);
// lcd.print(sensorValue);
lcd.print(” wp:”);
lcd.print(percent);
delay(3000);
lcd.clear();
lcd.print(” wp:”);
lcd.print(percent);

// lcd.print(“%”);

}