/*
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);
int analogValue;
const float BETA = 3950; // Deve corresponder ao coeficiente beta do termistor
float celsius;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Hello, ESP32-S2!");
  LCD.init();
  LCD.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:  
  
  analogValue = analogRead(34);
  celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println(celsius);

  delay(100); // this speeds up the simulation
}
*/

#include "driver/i2c.h"
#include <Wire.h>
#include <hd44780.h>                       // main hd44780 header
#include <hd44780ioClass/hd44780_I2Cexp.h> // i2c expander i/o class header

hd44780_I2Cexp LCD;
float celsius;
int analogValue;
const float BETA = 3950; // Deve corresponder ao coeficiente beta do termistor

int i2c_master_port = 0;
i2c_config_t conf = {
    .mode = 1,               //I2C_MODE_MASTER
    .sda_io_num = 21,                        // select SDA GPIO specific to your project, I2C_MASTER_SDA_IO
    .sda_pullup_en = GPIO_PULLUP_ENABLE,
    .scl_io_num = 20,                        // select SCL GPIO specific to your project, I2C_MASTER_SCL_IO
    .scl_pullup_en = GPIO_PULLUP_ENABLE,
    //.master.clk_speed = 10000,  // select frequency specific to your project, I2C_MASTER_FREQ_HZ
    //.clk_flags = 0,                          // optional; you can use I2C_SCLK_SRC_FLAG_* flags to choose i2c source clock here
};
conf->master.clk_speed = 10000;
conf->clk_flags = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");
  int status = LCD.begin(20, 4);
  if(status){
    hd44780::fatalError(status); // does not return
  }
  LCD.print("Hello, World!");
}

void loop() {
  // put your main code here, to run repeatedly:  
  
  analogValue = analogRead(34);
  celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print(celsius);

  delay(100); // this speeds up the simulation
}
/**/