#include <DHT.h> //Call DHT22 library
//The data of the DHT22 sensor is printed in digital form
#include "LiquidCrystal_I2C.h" //Call the I2C module library
#include <stm32l0xx_hal.h>

#define DHT_PORT 2 //Read data from DHT22 at pin D2 on the STM32 circuit.
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
#define flashAddress 0x08020000 //Declare the values ​​of LCD

DHT dht(DHT_PORT, DHT22);
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int choice = 0;


void setup() {
  lcd.init();
  lcd.backlight();
  dht.begin(); //Start DHT sensor
}

void loop() {
  float humid = dht.readHumidity();  //Read humidity
  float temp = dht.readTemperature();   //Read temperature
  printLcd(humid, temp);

  delay(2000);
}

void printSerial(float humid, float temp) {
  Serial.print("Humid: "); Serial.println(humid);
  Serial.print("Temp: "); Serial.println(temp);
}

void printLcd(float humid, float temp) {
  lcd.setCursor(0, 0);
  lcd.print("Humid: ");
  lcd.print(humid);
  lcd.setCursor(0, 1);
  lcd.print("Temp: ");
  lcd.print(temp);  
  //Export temperature and humidity values
}
void writeIntToFlash(int value) {
    HAL_FLASH_Unlock();  
    // Function to write an integer to Flash memory
 
    FLASH_EraseInitTypeDef FlashEraseInit;
    uint32_t SectorError = 0;
    HAL_FLASHEx_Erase(&FlashEraseInit, &SectorError);
    // Erase the sector before writing
    HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, flashAddress, (uint64_t)value);
    // Write the integer to Flash memory
    HAL_FLASH_Lock(); 
    // Lock the Flash memory after writing
}

int readIntFromFlash() {
    return *(__IO int*)flashAddress;
    // Function to read an integer from Flash memory
}