boloss

#include <SPI.h>
#include <Bounce2.h>
#include <Ethernet.h>
#include <PubSubClient.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 7, 6, 5, 4, 3, 2);

int backLight = 9;    // pin 13 will control the backlight


void callback(char* topic, byte* payload, unsigned int length);

char* inTopic = "1";
char* OutTopic = "ArduinoButton";

char message_buff[100];
byte mac[] = {  0x26, 0x9E, 0x05, 0xE2, 0x59, 0xA0 };
byte server[] = { 192, 168, 0, 50 };
int port = 1883;
EthernetClient ethClient;
PubSubClient mqttClient(server, port, callback, ethClient);

void setup() {

	Serial.begin(9600);
  pinMode(backLight, OUTPUT);
  digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
  lcd.begin(16, 2);             // columns, rows.  use 16,2 for a 16x2 LCD, etc.
  lcd.clear();                  // start with a blank screen
  lcd.setCursor(0, 0);          // set cursor to column 0, row 0 (the first row)
  lcd.print("waiting");    // change this text to whatever you like. keep it clean.
  lcd.setCursor(0, 1);          // set cursor to column 0, row 1
  lcd.print("...");
   Serial.print("start");
	if (!Ethernet.begin(mac)) {
		Serial.println(F("Failed to configure Ethernet using DHCP"));
		for (;;)
			;
	} else {
		Serial.print(F("Arduino IP address: "));
		Serial.print(Ethernet.localIP());
	}
	Serial.println();

}

void loop() {

	mqttConnection();
 
}

void mqttConnection() {
	Ethernet.maintain();
	// add reconnection logics
	if (!mqttClient.connected()) {
		// connection to MQTT server
		if (mqttClient.connect("1")) {
			Serial.println(F("Successfully connected with MQTT"));
			mqttSubscribe(); // topic subscription
		}
	}
	mqttClient.loop();
}

void mqttSubscribe() {
	mqttClient.subscribe("1/#");
}

void callback(char* topic, byte* payload, unsigned int length) {

	int i = 0;

	Serial.println("Message arrived: topic: " + String(topic));
	for(i=0; i < length; i++) {
		message_buff[i] = payload[i];
	}
	message_buff[i] = '\0';
	String msgString = String(message_buff);
	Serial.println("Payload: " + msgString);
  if (msgString[0] == 0)
  { 
    lcd.clear();
    lcd.setCursor(0, 0);          // set cursor to column 0, row 0 (the first row)
    lcd.print("access");    // change this text to whatever you like. keep it clean.
    lcd.setCursor(0, 1);          // set cursor to column 0, row 1
    lcd.print("denied");
  }
  else if (msgString[0] == 1) {
    lcd.clear();
    lcd.setCursor(0, 0);          // set cursor to column 0, row 0 (the first row)
    lcd.print("access");    // change this text to whatever you like. keep it clean.
    lcd.setCursor(0, 1);          // set cursor to column 0, row 1
    lcd.print("granted");
  }
}