iot-firmware/src/main.cpp

// #define USE_INTERRUPT
#include <ESPMegaPRO.h>
#include <ETH.h>
#include <PubSubClient.h>
#include <PubSubClientTools.h>
#include <Thread.h>
#include <StaticThreadController.h>
#include <IRremote.hpp>
#include <daikin_ir.hpp>
#include <dhtnew.h>
#include "EasyNextionLibrary.h"
#include <lcd.hpp>

// Network Connectivity
char HOSTNAME[15];
IPAddress IP(0, 0, 0, 0);
IPAddress SUBNET(0, 0, 0, 0);
IPAddress GATEWAY(0, 0, 0, 0);
IPAddress DNS(0, 0, 0, 0);
IPAddress MQTT_SERVER(0, 0, 0, 0);
uint16_t MQTT_PORT = 0;
bool standalone = true;
// #define MQTT_BASE_TOPIC "/espmega/ProR3"
char MQTT_BASE_TOPIC[20];
uint8_t base_topic_length = 0;
char STATE_REQUEST_TOPIC[40];
// #define MQTT_USE_AUTH
#ifdef MQTT_USE_AUTH
const char MQTT_USERNAME[] = "username";
const char MQTT_PASSWORD[] = "password";
#endif

// Inputs
#define VINT_COUNT 16
const int DEBOUNCE_TIME_MS = 50;
const int virtual_interrupt_pins[VINT_COUNT] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
int virtual_interupt_state[VINT_COUNT];
unsigned long virtual_interupt_timer[VINT_COUNT];

// Outputs
#define PWM_COUNT 16
const uint8_t pwm_pins[PWM_COUNT] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
bool pwm_states[PWM_COUNT];
uint8_t pwm_states_eeprom[PWM_COUNT];
uint16_t pwm_values[PWM_COUNT];
uint8_t pwm_values_eeprom[PWM_COUNT * 2];
// output = m*input+c
const float pwm_linear_scaling_m[PWM_COUNT] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
const float pwm_linear_scaling_c[PWM_COUNT] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
#define PWM_CYCLE_VALUES_COUNT 3
const int PWM_CYCLE_VALUES[PWM_CYCLE_VALUES_COUNT] = {50, 125, 255};
char PWM_SET_STATE_TOPIC[70];
char PWM_SET_VALUE_TOPIC[70];

// Infrared Transciever
#define IR_RECIEVE_PIN 32
#define IR_SEND_PIN 15
#define MARK_EXCESS_MICROS 20
#define RAW_BUFFER_LENGTH 750

// LCD
int lcd_current_page = 1;
int lcd_pwmAdj_id = 0;
EasyNex panel(Serial);

// Air Conditioner Control
/*
Mode 0: Off, 1: Cool, 2: Fan
Fan Speed 0: Auto, 1: High, 2: Mid, 3: Low
*/
#define DHT22_PIN 17
uint8_t ac_mode = 0;
uint8_t ac_fan_speed = 0;
uint8_t ac_temperature = 25;
#define AC_MAX_TEMPERATURE 30
#define AC_MIN_TEMPERATURE 18
char AC_SET_MODE_TOPIC[75];
char AC_SET_FAN_TOPIC[75];
char AC_SET_TEMPERATURE_TOPIC[75];
char AC_MODE_TOPIC[75];
char AC_FAN_TOPIC[75];
char AC_TEMPERATURE_TOPIC[75];
char AC_ROOM_TEMPERATURE_TOPIC[75];
char AC_HUMIDITY_TOPIC[75];

// EEPROM ADDRESS
#define EEPROM_ADDRESS_AC_MODE 0        // 01bytes
#define EEPROM_ADDRESS_AC_TEMPERATURE 1 // 01bytes
#define EEPROM_ADDRESS_AC_FAN_SPEED 2   // 01bytes
#define EEPROM_ADDRESS_PWM_STATE 3      // 16bytes, thru 18
#define EEPROM_ADDRESS_PWM_VALUE 19     // 32bytes, thru 50
#define EEPROM_ADDRESS_HOSTNAME 65      // 15bytes, thru 79
#define EEPROM_ADDRESS_TOPIC 80         // 20bytes, thru 99
#define EEPROM_ADDRESS_IP 100           // 04bytes, thru 103
#define EEPROM_ADDRESS_SUBNET 104       // 04bytes, thru 107
#define EEPROM_ADDRESS_GATEWAY 108      // 04bytes, thru 111
#define EEPROM_ADDRESS_DNS 112          // 04bytes, thru 115
#define EEPROM_ADDRESS_MQTT_SERVER 116  // 04bytes, thru 119
#define EEPROM_ADDRESS_MQTT_PORT 120    // 02bytes, thru 121

// Forward declaration
void virtual_interrupt_loop();
void virtual_interrupt_callback(int pin, int state);
void network_begin();
void mqtt_connect();
void mqtt_subscribe();
void thread_initialization();
void pwm_state_callback(String topic, String message);
void pwm_value_callback(String topic, String message);
void state_request_callback(String topic, String message);
void io_begin();
void ir_loop();

void publish_pwm_states();
void publish_pwm_state(int id);
void pwm_set_state(int id, int state);
void pwm_set_value(int id, int value);
void pwm_toggle(int id);
void pwm_toggle(int id1, int id2);
void pwm_cycle_value(int id);
boolean pwm_group_state(int id1, int id2);

void publish_ac_state();
void publish_env_state();
void ac_state_callback(String topic, String message);
void ac_set_state(int mode, int temperature, int fan_speed);

void publish_input_states();
void publish_input_state(int id);
void publish_input_state(int id, int state);

void lcd_begin();
void lcd_loop();
void lcd_refresh();
void lcd_refresh_pd();
void lcd_top_bar_update();
void trigger0();
void trigger1();
void trigger2();
void trigger3();
void trigger4();
void trigger5();
void trigger6();
void trigger7();
void trigger8();
void trigger9();
void trigger10();
void trigger11();
void trigger12();
void trigger13();

void eeprom_retrieve_init();
void eeprom_pwm_update();

void lcd_ac_refresh_fan();
void lcd_ac_refresh_mode();

void set_ip(String address);
void set_netmask(String address);
void set_dns(String address);
void set_gw(String address);
void set_mqtt_server(String address);
void eeprom_ip_update(uint16_t rom_address, uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4);
IPAddress eeprom_ip_retrieve(uint16_t rom_address);
void set_hostname(String hostname);
void eeprom_hostname_retrieve();
void set_basetopic(String topic);
void eeprom_basetopic_retrieve();
void mqtt_port_set(uint16_t port);
void eeprom_mqtt_port_retrieve();

char PWM_STATE_TOPIC[75];
char PWM_VALUE_TOPIC[75];
char INPUTS_TOPIC[75];

WiFiClient eth;
PubSubClient mqtt_client(MQTT_SERVER, 1883, eth);
PubSubClientTools mqtt(mqtt_client);

DHTNEW env_sensor(DHT22_PIN);

Thread mqtt_reconnector = Thread();
Thread environment_reporter = Thread();
Thread eeprom_pwm_updater = Thread();
StaticThreadController<3> thread_controller(&mqtt_reconnector, &environment_reporter, &eeprom_pwm_updater);

Thread top_bar_updater = Thread();
Thread page_updater = Thread();
StaticThreadController<2> lcd_thread_controller(&top_bar_updater, &page_updater);

void setup()
{
  Serial.begin(115200);
  panel.begin(115200);
  Serial.println("ESPMega R3 Initializing");
  ESPMega_begin();
  io_begin();
  eeprom_retrieve_init();
  lcd_send_stop_bit();
  lcd_init();
  lcd_begin();
  lcd_send_command("boot_state.txt=\"Core Initializing . . .\"");
  Serial.println("Initializing Infrared . . .");
  lcd_send_command("boot_state.txt=\"Infrared Initializing . . .\"");
  IrReceiver.begin(IR_RECIEVE_PIN);
  IrSender.begin(IR_SEND_PIN);
  lcd_send_command("boot_state.txt=\"Network Initializing . . .\"");
  network_begin();
  Serial.println("Initializing MQTT . . .");
  lcd_send_command("boot_state.txt=\"IoT Core Initializing . . .\"");
  mqtt_connect();
  lcd_send_command("boot_state.txt=\"Threads Initializing . . .\"");
  thread_initialization();
  Serial.println("Initialization Completed.");
  Serial.println("Jumping to User Code.");
  // Begin User Code

  /*
  Pre-NTP Implementation
  */
  lcd_send_command("page dashboard");
}

void loop()
{
  virtual_interrupt_loop();
  mqtt_client.loop();
  ESPMega_loop();
  ir_loop();
  thread_controller.run();
  lcd_loop();
}

void eeprom_retrieve_init()
{
  // EEPROM Data Retrival
  ac_mode = ESPMega_EEPROM.readByte(EEPROM_ADDRESS_AC_MODE);
  ac_temperature = ESPMega_EEPROM.readByte(EEPROM_ADDRESS_AC_TEMPERATURE);
  ac_fan_speed = ESPMega_EEPROM.readByte(EEPROM_ADDRESS_AC_FAN_SPEED);
  // EEPROM Data Retrival Validation
  if (ac_mode > 2)
  {
    ac_mode = 0;
    ESPMega_EEPROM.writeByte(EEPROM_ADDRESS_AC_MODE, ac_mode);
  }
  if (ac_temperature > AC_MAX_TEMPERATURE || ac_temperature < AC_MIN_TEMPERATURE)
  {
    ac_temperature = AC_MAX_TEMPERATURE;
    ESPMega_EEPROM.writeByte(EEPROM_ADDRESS_AC_TEMPERATURE, ac_temperature);
  }
  if (ac_fan_speed > 3)
  {
    ac_fan_speed = 0;
    ESPMega_EEPROM.writeByte(EEPROM_ADDRESS_AC_TEMPERATURE, ac_fan_speed);
  }
  ac_set_state(ac_mode, ac_temperature, ac_fan_speed);
  ESPMega_EEPROM.readBlock(EEPROM_ADDRESS_PWM_STATE, pwm_states_eeprom, 16);
  memcpy(pwm_states, pwm_states_eeprom, 16);
  ESPMega_EEPROM.readBlock(EEPROM_ADDRESS_PWM_VALUE, pwm_values_eeprom, 32);
  memcpy(pwm_values, pwm_values_eeprom, 32);
  for (int i = 0; i < 15; i++)
  {
    if (pwm_states[i] <= 1)
      pwm_set_state(i, pwm_states[i]);
    else
      pwm_set_state(i, 0);
    if (pwm_values[i] <= 4095)
      pwm_set_value(i, pwm_values[i]);
    else
      pwm_set_value(i, 0);
  }
  IP = eeprom_ip_retrieve(EEPROM_ADDRESS_IP);
  SUBNET = eeprom_ip_retrieve(EEPROM_ADDRESS_SUBNET);
  GATEWAY = eeprom_ip_retrieve(EEPROM_ADDRESS_GATEWAY);
  DNS = eeprom_ip_retrieve(EEPROM_ADDRESS_DNS);
  MQTT_SERVER = eeprom_ip_retrieve(EEPROM_ADDRESS_MQTT_SERVER);
  eeprom_hostname_retrieve();
  eeprom_mqtt_port_retrieve();
  mqtt_client.setServer(MQTT_SERVER, MQTT_PORT);
  eeprom_basetopic_retrieve();
  base_topic_length = strlen(MQTT_BASE_TOPIC)+1;
  memcpy(STATE_REQUEST_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(STATE_REQUEST_TOPIC, "/requeststate");
  memcpy(PWM_SET_STATE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(PWM_SET_STATE_TOPIC, "/pwm/00/set/state");
  memcpy(PWM_SET_VALUE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(PWM_SET_VALUE_TOPIC, "/pwm/00/set/value");
  memcpy(AC_SET_MODE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_SET_MODE_TOPIC, "/ac/set/mode");
  memcpy(AC_SET_FAN_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_SET_FAN_TOPIC, "/ac/set/fan_speed");
  memcpy(AC_SET_TEMPERATURE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_SET_TEMPERATURE_TOPIC, "/ac/set/temperature");
  memcpy(AC_MODE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_MODE_TOPIC, "/ac/mode");
  memcpy(AC_FAN_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_FAN_TOPIC, "/ac/fan_speed");
  memcpy(AC_TEMPERATURE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_TEMPERATURE_TOPIC, "/ac/temperature");
  memcpy(AC_ROOM_TEMPERATURE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_ROOM_TEMPERATURE_TOPIC, "/ac/room_temperature");
  memcpy(AC_HUMIDITY_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(AC_HUMIDITY_TOPIC, "/ac/humidity");
  memcpy(PWM_STATE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(PWM_STATE_TOPIC, "/pwm/00/state");
  memcpy(PWM_VALUE_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(PWM_VALUE_TOPIC, "/pwm/00/value");
  memcpy(INPUTS_TOPIC, MQTT_BASE_TOPIC, 20);
  strcat(INPUTS_TOPIC, "/input/00");
}

void io_begin()
{
  Serial.println("Initializing I/O . . .");
  pinMode(IR_RECIEVE_PIN, INPUT_PULLUP);
  pinMode(IR_SEND_PIN, OUTPUT);
}

void network_begin()
{
  Serial.print("Initializing Network ");
  ETH.begin();
  ETH.setHostname(HOSTNAME);
  ETH.config(IP, GATEWAY, SUBNET, DNS, DNS);
  delay(1000);
  lcd_send_command("boot_state.txt=\"Ethernet Core Initializing . . .\"");
  delay(500);
  lcd_send_command("boot_state.txt=\"MQTT Core Initializing . . .\"");
  delay(1250);
  lcd_send_command("boot_state.txt=\"FRAM Initializing . . .\"");
  delay(325);
  lcd_send_command("boot_state.txt=\"Software Initializing . . .\"");
  delay(500);
  Serial.println();
}

void mqtt_connect()
{
  if (!mqtt_client.connected())
  {
    Serial.print("MQTT not connected, connecting . . .\n");
    lcd_send_stop_bit();
#ifdef MQTT_USE_AUTH
    mqtt_client.connect(HOSTNAME, MQTT_USERNAME, MQTT_PASSWORD);
#else
    mqtt_client.connect(HOSTNAME);
#endif
    if (mqtt_client.connected())
    {
      mqtt_subscribe();
      Serial.print("MQTT connected\n");
      lcd_send_stop_bit();
      publish_pwm_states();
      publish_input_states();
      publish_ac_state();
      standalone = false;
    }
    else
    {
      standalone = true;
      Serial.print("MQTT not connected, continuing in standalone mode\n");
      lcd_send_stop_bit();
    }
    lcd_send_stop_bit();
    lcd_refresh();
    lcd_top_bar_update();
  }
}

void mqtt_subscribe()
{
  for (int i = 0; i < PWM_COUNT; i++)
  {
    PWM_SET_VALUE_TOPIC[base_topic_length + 4] = ((i - i % 10) / 10) + '0';
    PWM_SET_VALUE_TOPIC[base_topic_length + 5] = (i % 10) + '0';
    PWM_SET_STATE_TOPIC[base_topic_length + 4] = ((i - i % 10) / 10) + '0';
    PWM_SET_STATE_TOPIC[base_topic_length + 5] = (i % 10) + '0';
    mqtt.subscribe(PWM_SET_STATE_TOPIC, pwm_state_callback);
    mqtt.subscribe(PWM_SET_VALUE_TOPIC, pwm_value_callback);
  }
  mqtt.subscribe(AC_SET_FAN_TOPIC, ac_state_callback);
  mqtt.subscribe(AC_SET_TEMPERATURE_TOPIC, ac_state_callback);
  mqtt.subscribe(AC_SET_MODE_TOPIC, ac_state_callback);
  mqtt.subscribe(STATE_REQUEST_TOPIC, state_request_callback);
}

void thread_initialization()
{
  Serial.println("Initializing Threads . . .");
  Serial.println("Initializing MQTT Thread . . .");
  mqtt_reconnector.onRun(mqtt_connect);
  mqtt_reconnector.setInterval(15000);
  environment_reporter.onRun(publish_env_state);
  environment_reporter.setInterval(5000);
  eeprom_pwm_updater.onRun(eeprom_pwm_update);
  eeprom_pwm_updater.setInterval(5000);
}

void pwm_state_callback(String topic, String message)
{
  int a = topic.charAt(base_topic_length + 4) - '0';
  int b = topic.charAt(base_topic_length + 5) - '0';
  int id = 10 * a + b;
  if (message.compareTo("on") == 0)
  {
    pwm_set_state(id, true);
  }
  else if (message.compareTo("off") == 0)
  {
    pwm_set_state(id, false);
  }
}

void pwm_value_callback(String topic, String message)
{
  int a = topic.charAt(base_topic_length + 4) - '0';
  int b = topic.charAt(base_topic_length + 5) - '0';
  int id = 10 * a + b;
  int value = message.toInt();
  pwm_set_value(id, value);
}

void virtual_interrupt_callback(int pin, int state)
{

  publish_input_state(pin, state);
  // Serial.printf("Pin %d changed to %d\n", pin, state);
  if (lcd_current_page == 2)
    panel.writeNum("I" + String(pin) + ".val", state);
  if (pin == 15)
  {
    pwm_toggle(4);
  }
}

void virtual_interrupt_loop()
{
  for (int i = 0; i < 16; i++)
  {
    int current_pin_value = ESPMega_digitalRead(virtual_interrupt_pins[i]);
    if (virtual_interupt_state[i] != current_pin_value)
    {
      if (millis() - virtual_interupt_timer[i] > DEBOUNCE_TIME_MS)
      {
        virtual_interupt_state[i] = current_pin_value;
        virtual_interrupt_callback(i, current_pin_value);
      }
    }
    else
    {
      virtual_interupt_timer[i] = millis();
    }
    yield();
  }
}

void publish_pwm_states()
{
  for (int i = 0; i < PWM_COUNT; i++)
  {
    publish_pwm_state(i);
  }
}

void publish_pwm_state(int id)
{
  int state = pwm_states[id];
  int value = pwm_values[id];
  PWM_STATE_TOPIC[base_topic_length + 4] = ((id - id % 10) / 10) + '0';
  PWM_STATE_TOPIC[base_topic_length + 5] = (id % 10) + '0';
  PWM_VALUE_TOPIC[base_topic_length + 4] = ((id - id % 10) / 10) + '0';
  PWM_VALUE_TOPIC[base_topic_length + 5] = (id % 10) + '0';
  if (state == 1)
  {
    mqtt_client.publish(PWM_STATE_TOPIC, "on");
  }
  else if (state == 0)
  {
    mqtt_client.publish(PWM_STATE_TOPIC, "off");
  }
  mqtt.publish(String(PWM_VALUE_TOPIC), String(value));
}

void pwm_set_state(int id, int state)
{
  if (state != pwm_states[id])
  {
    pwm_states[id] = state;
    int pwm_value = pwm_values[id];
    ESPMega_analogWrite(pwm_pins[id], state * (int)(pwm_linear_scaling_m[id] * pwm_value + pwm_linear_scaling_c[id]));
    if (lcd_current_page == 3)
      panel.writeNum("j" + String(id) + ".pco", state ? 47829 : 12710);
    else if (lcd_current_page == 5 && id == lcd_pwmAdj_id)
      panel.writeStr("pwm_state.txt", pwm_states[lcd_pwmAdj_id] ? "ON" : "OFF");
    publish_pwm_state(id);
  }
}

void pwm_set_value(int id, int value)
{
  pwm_values[id] = value;
  int pwm_state = pwm_states[id];
  ESPMega_analogWrite(pwm_pins[id], pwm_state * (int)(pwm_linear_scaling_m[id] * value + pwm_linear_scaling_c[id]));
  if (lcd_current_page == 3)
    panel.writeNum("j" + String(id) + ".val", int(value / 4095.0 * 100.0));
  else if (lcd_current_page == 5 && id == lcd_pwmAdj_id)
    panel.writeNum("pwm_value.val", pwm_values[lcd_pwmAdj_id]);
  publish_pwm_state(id);
}

void pwm_toggle(int id)
{
  int state = !pwm_states[id];
  pwm_set_state(id, state);
}

void pwm_toggle(int id1, int id2)
{
  boolean state = pwm_group_state(id1, id2);
  if (state)
  {
    pwm_set_state(id1, 0);
    pwm_set_state(id2, 0);
  }
  else
  {
    pwm_set_state(id1, 1);
    pwm_set_state(id2, 1);
  }
}

boolean pwm_group_state(int id1, int id2)
{
  int state1 = pwm_states[id1 - 1], state2 = pwm_states[id2 - 1];
  if (state1 || state2)
    return true;
  return false;
}

void pwm_cycle_value(int id)
{
  int state = pwm_states[id];
  int value = pwm_values[id];
  if (state == 1)
    for (int i = 0; i < PWM_CYCLE_VALUES_COUNT; i++)
    {
      if (PWM_CYCLE_VALUES[i] == value)
      {
        if (i > 0)
        {
          pwm_set_value(id, PWM_CYCLE_VALUES[i - 1]);
          return;
        }
        else
        {
          pwm_set_state(id, 0);
          return;
        }
      }
    }
  pwm_set_state(id, 1);
  pwm_set_value(id, PWM_CYCLE_VALUES[PWM_CYCLE_VALUES_COUNT - 1]);
}

void publish_input_states()
{
  for (int i = 0; i < VINT_COUNT; i++)
  {
    publish_input_state(i);
  }
}
void publish_input_state(int id)
{
  int state = ESPMega_digitalRead(virtual_interrupt_pins[id]);
  publish_input_state(id, state);
}

void publish_input_state(int id, int state)
{
  INPUTS_TOPIC[base_topic_length + 6] = ((id - id % 10) / 10) + '0';
  INPUTS_TOPIC[base_topic_length + 7] = (id % 10) + '0';
  mqtt.publish(String(INPUTS_TOPIC), state ? "1" : "0");
}

void state_request_callback(String topic, String message)
{
  publish_input_states();
  publish_pwm_states();
  publish_ac_state();
}

void ir_loop()
{
  if (IrReceiver.decode())
  {
    // Serial.println();
    // IrReceiver.compensateAndPrintIRResultAsCArray(&Serial, false);
    // Serial.println();
    // Serial.println();
    IrReceiver.resume();
  }
}

void publish_ac_state()
{
  String temp = "";
  switch (ac_mode)
  {
  case 0:
    temp = "off";
    break;
  case 1:
    temp = "cool";
    break;
  case 2:
    temp = "fan_only";
  default:
    break;
  }
  mqtt.publish(String(AC_MODE_TOPIC), temp);
  mqtt.publish(String(AC_TEMPERATURE_TOPIC), String(ac_temperature));
  switch (ac_fan_speed)
  {
  case 0:
    temp = "auto";
    break;
  case 1:
    temp = "high";
    break;
  case 2:
    temp = "med";
    break;
  case 3:
    temp = "low";
    break;
  }
  mqtt.publish(String(AC_FAN_TOPIC), temp);
}

void ac_state_callback(String topic, String message)
{
  if (topic.compareTo(String(AC_SET_TEMPERATURE_TOPIC)) == 0)
  {
    int new_temp = message.toInt();
    if (new_temp >= AC_MIN_TEMPERATURE && new_temp <= AC_MAX_TEMPERATURE)
    {
      ac_set_state(ac_mode, new_temp, ac_fan_speed);
    }
  }
  else if (topic.compareTo(String(AC_SET_MODE_TOPIC)) == 0)
  {
    if (message.compareTo("off") == 0)
    {
      ac_set_state(0, ac_temperature, ac_fan_speed);
    }
    else if (message.compareTo("cool") == 0)
    {
      ac_set_state(1, ac_temperature, ac_fan_speed);
    }
    else if (message.compareTo("fan_only") == 0)
    {
      ac_set_state(2, ac_temperature, ac_fan_speed);
    }
  }
  else if (topic.compareTo(String(AC_SET_FAN_TOPIC)) == 0)
  {
    if (message.compareTo("auto") == 0)
    {
      ac_set_state(ac_mode, ac_temperature, 0);
    }
    else if (message.compareTo("low") == 0)
    {
      ac_set_state(ac_mode, ac_temperature, 1);
    }
    else if (message.compareTo("med") == 0)
    {
      ac_set_state(ac_mode, ac_temperature, 2);
    }
    else if (message.compareTo("high") == 0)
    {
      ac_set_state(ac_mode, ac_temperature, 3);
    }
  }
}

void ac_set_state(int mode, int temperature, int fan_speed)
{
  ac_mode = mode;
  ac_temperature = temperature;
  ac_fan_speed = fan_speed;
  temperature -= AC_MIN_TEMPERATURE;

  if (lcd_current_page == 4)
  {
    lcd_ac_refresh_fan();
    lcd_ac_refresh_mode();
    if (ac_mode != 2)
      panel.writeStr("temp.txt", String(ac_temperature) + "C");
    else
      panel.writeStr("temp.txt", "--C");
  }
  publish_ac_state();
  uint8_t ac_datablock[3] = {ac_mode, ac_temperature, ac_fan_speed};
  ESPMega_EEPROM.writeBlock(0, ac_datablock, 3);
  switch (mode)
  {
  case 0:
    IrSender.sendRaw(ir_code_off, sizeof(ir_code_off) / sizeof(ir_code_off[0]), NEC_KHZ);
    break;
  case 1:
    IrSender.sendRaw(ir_code_cool[fan_speed][temperature], sizeof(ir_code_cool[fan_speed][temperature]) / sizeof(ir_code_cool[fan_speed][0]), NEC_KHZ);
    break;
  case 2:
    IrSender.sendRaw(ir_code_fan[fan_speed], sizeof(ir_code_fan[fan_speed]) / sizeof(ir_code_fan[fan_speed][0]), NEC_KHZ);
    break;
  }
}

void publish_env_state()
{
  int errorCode = env_sensor.read();
  yield();
  switch (errorCode)
  {
  case DHTLIB_OK:
    mqtt.publish(String(AC_ROOM_TEMPERATURE_TOPIC), String(env_sensor.getTemperature()));
    mqtt_client.loop();
    mqtt.publish(String(AC_HUMIDITY_TOPIC), String(env_sensor.getHumidity()));
    mqtt_client.loop();
    break;
  default:
    mqtt.publish(String(AC_ROOM_TEMPERATURE_TOPIC), "ERROR");
    mqtt_client.loop();
    mqtt.publish(String(AC_HUMIDITY_TOPIC), "ERROR");
    mqtt_client.loop();
  }
}

void lcd_begin()
{
  top_bar_updater.onRun(lcd_top_bar_update);
  top_bar_updater.setInterval(10000);
  page_updater.onRun(lcd_refresh_pd);
  page_updater.setInterval(5000);
  lcd_refresh();
}

void lcd_loop()
{
  lcd_thread_controller.run();
  panel.NextionListen();
  if (panel.currentPageId != lcd_current_page)
  {
    lcd_current_page = panel.currentPageId;
    lcd_refresh();
    lcd_top_bar_update();
  }
}

void lcd_refresh_pd()
{
  if (lcd_current_page == 1)
  {
    lcd_refresh();
  }
}

void lcd_refresh()
{
  switch (lcd_current_page)
  {
  case 1:
    panel.writeStr("hostname.txt", HOSTNAME);
    panel.writeStr("server_address.txt", MQTT_SERVER.toString());
    panel.writeStr("ip_address.txt", IP.toString());
    panel.writeStr("status_txt.txt", standalone ? "Standalone" : "BMS Managed");
    break;
  case 2:
    for (int i = 0; i <= 15; i++)
    {
      panel.writeNum("I" + String(i) + ".val", virtual_interupt_state[i]);
    }
    break;
  case 3:
    for (int i = 0; i <= 15; i++)
    {
      panel.writeNum("j" + String(i) + ".val", int(pwm_values[i] / 4095.0 * 100.0));
      panel.writeNum("j" + String(i) + ".pco", pwm_states[i] ? 47829 : 12710);
    }
    break;
  case 4:
    if (ac_mode != 2)
      panel.writeStr("temp.txt", String(ac_temperature) + "C");
    else
      panel.writeStr("temp.txt", "--C");
    lcd_ac_refresh_fan();
    lcd_ac_refresh_mode();
  case 5:
    panel.writeStr("pwm_id.txt", String("P") + String(lcd_pwmAdj_id));
    panel.writeStr("pwm_state.txt", pwm_states[lcd_pwmAdj_id] ? "ON" : "OFF");
    panel.writeNum("pwm_value.val", pwm_values[lcd_pwmAdj_id]);
    break;
  case 6:
    panel.writeStr("ip_set.txt", IP.toString());
    panel.writeStr("netmask_set.txt", SUBNET.toString());
    panel.writeStr("gateway_set.txt", GATEWAY.toString());
    panel.writeStr("dns_set.txt", DNS.toString());
    panel.writeStr("mqttsv_set.txt", MQTT_SERVER.toString());
    panel.writeStr("host_set.txt", HOSTNAME);
    panel.writeNum("port_set.val", MQTT_PORT);
    panel.writeStr("topic_set.txt", MQTT_BASE_TOPIC);
    break;
  default:
    break;
  }
}
void lcd_top_bar_update()
{
  String time_str = String(rtc.getHour()) + ":" + String(rtc.getMinute());
  panel.writeStr("time.txt", time_str);
  panel.writeNum("server.pic", standalone ? 4 : 5);
  panel.writeNum("lan.pic", ETH.linkUp() ? 3 : 2);
}

void lcd_ac_refresh_mode()
{
  // auto high mid low
  panel.writeNum("mode_cool.pic", ac_mode == 1 ? 12 : 13);
  panel.writeNum("mode_fan.pic", ac_mode == 2 ? 22 : 23);
  panel.writeNum("mode_off.pic", ac_mode == 0 ? 24 : 23);
}

void lcd_ac_refresh_fan()
{
  panel.writeNum("fan_auto.pic", ac_fan_speed == 0 ? 14 : 15);
  panel.writeNum("fan_low.pic", ac_fan_speed == 3 ? 18 : 19);
  panel.writeNum("fan_mid.pic", ac_fan_speed == 2 ? 20 : 21);
  panel.writeNum("fan_high.pic", ac_fan_speed == 1 ? 16 : 17);
}

void trigger0()
{
  if (lcd_pwmAdj_id >= 15)
    lcd_pwmAdj_id = 0;
  else
    lcd_pwmAdj_id++;
  lcd_refresh();
}

void trigger1()
{
  if (lcd_pwmAdj_id <= 0)
    lcd_pwmAdj_id = 15;
  else
    lcd_pwmAdj_id--;
  lcd_refresh();
}

void trigger2()
{
  pwm_toggle(lcd_pwmAdj_id);
}

void trigger3()
{
  int value = panel.readNumber("pwm_value.val");
  lcd_send_stop_bit();
  pwm_set_value(lcd_pwmAdj_id, value);
}

void trigger4()
{
  if (ac_temperature < AC_MAX_TEMPERATURE && ac_mode != 2)
    ac_set_state(ac_mode, ac_temperature + 1, ac_fan_speed);
}

void trigger5()
{
  if (ac_temperature > AC_MIN_TEMPERATURE && ac_mode != 2)
    ac_set_state(ac_mode, ac_temperature - 1, ac_fan_speed);
}

void trigger6()
{
  ac_set_state(ac_mode, ac_temperature, 0);
}

void trigger7()
{
  ac_set_state(ac_mode, ac_temperature, 3);
}

void trigger8()
{
  ac_set_state(ac_mode, ac_temperature, 2);
}

void trigger9()
{
  ac_set_state(ac_mode, ac_temperature, 1);
}

void trigger10()
{
  ac_set_state(1, ac_temperature, ac_fan_speed);
}

void trigger11()
{
  ac_set_state(2, ac_temperature, ac_fan_speed);
}

void trigger12()
{
  ac_set_state(0, ac_temperature, ac_fan_speed);
}

void trigger13()
{
  set_ip(panel.readStr("ip_set.txt"));
  set_netmask(panel.readStr("netmask_set.txt"));
  set_gw(panel.readStr("gateway_set.txt"));
  set_dns(panel.readStr("dns_set.txt"));
  set_mqtt_server(panel.readStr("mqttsv_set.txt"));
  set_hostname(panel.readStr("host_set.txt"));
  set_basetopic(panel.readStr("topic_set.txt"));
  uint16_t port = panel.readNumber("port_set.val");
  mqtt_port_set(port);
  delay(100);
  ESP.restart();
}

void eeprom_pwm_update()
{
  if (memcmp(pwm_states, pwm_states_eeprom, 16))
  {
    memcpy(pwm_states_eeprom, pwm_states, 16);
    ESPMega_EEPROM.writeBlock(3, pwm_states_eeprom, 16);
    lcd_send_stop_bit();
  }
  if (memcmp(pwm_values, pwm_values_eeprom, 32))
  {
    memcpy(pwm_values_eeprom, pwm_values, 32);
    ESPMega_EEPROM.writeBlock(19, pwm_values_eeprom, 32);
    lcd_send_stop_bit();
  }
}

void set_ip(String address)
{
  IP.fromString(address);
  eeprom_ip_update(EEPROM_ADDRESS_IP, IP[0], IP[1], IP[2], IP[3]);
}
void set_netmask(String address)
{
  SUBNET.fromString(address);
  eeprom_ip_update(EEPROM_ADDRESS_SUBNET, SUBNET[0], SUBNET[1], SUBNET[2], SUBNET[3]);
}
void set_dns(String address)
{
  DNS.fromString(address);
  eeprom_ip_update(EEPROM_ADDRESS_DNS, DNS[0], DNS[1], DNS[2], DNS[3]);
}
void set_gw(String address)
{
  GATEWAY.fromString(address);
  eeprom_ip_update(EEPROM_ADDRESS_GATEWAY, GATEWAY[0], GATEWAY[1], GATEWAY[2], GATEWAY[3]);
}
void set_mqtt_server(String address)
{
  MQTT_SERVER.fromString(address);
  eeprom_ip_update(EEPROM_ADDRESS_MQTT_SERVER, MQTT_SERVER[0], MQTT_SERVER[1], MQTT_SERVER[2], MQTT_SERVER[3]);
}
void eeprom_ip_update(uint16_t rom_address, uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4)
{
  uint8_t addressblock[4] = {byte1, byte2, byte3, byte4};
  ESPMega_EEPROM.writeBlock(rom_address, addressblock, 4);
}
IPAddress eeprom_ip_retrieve(uint16_t rom_address)
{
  uint8_t addressblock[4];
  ESPMega_EEPROM.readBlock(rom_address, addressblock, 4);
  return IPAddress(addressblock[0], addressblock[1], addressblock[2], addressblock[3]);
}

void set_hostname(String hostname)
{
  hostname.toCharArray(HOSTNAME, 15);
  ESPMega_EEPROM.writeBlock(EEPROM_ADDRESS_HOSTNAME, (uint8_t *)HOSTNAME, 15);
}

void eeprom_hostname_retrieve()
{
  ESPMega_EEPROM.readBlock(EEPROM_ADDRESS_HOSTNAME, (uint8_t *)HOSTNAME, 15);
}

void set_basetopic(String topic)
{
  topic.toCharArray(MQTT_BASE_TOPIC, 20);
  ESPMega_EEPROM.writeBlock(EEPROM_ADDRESS_TOPIC, (uint8_t *)MQTT_BASE_TOPIC, 20);
}

void eeprom_basetopic_retrieve()
{
  ESPMega_EEPROM.readBlock(EEPROM_ADDRESS_TOPIC, (uint8_t *)MQTT_BASE_TOPIC, 20);
}

void mqtt_port_set(uint16_t port)
{
  uint8_t port_arr[2];
  memcpy(port_arr, &port, 2);
  ESPMega_EEPROM.writeBlock(EEPROM_ADDRESS_MQTT_PORT, port_arr, 2);
}
void eeprom_mqtt_port_retrieve()
{
  uint8_t port_arr[2];
  ESPMega_EEPROM.readBlock(EEPROM_ADDRESS_MQTT_PORT, port_arr, 2);
  memcpy(&MQTT_PORT, port_arr, 2);
}