Nadajnik

#include <VirtualWire.h>
#include <PCF8574.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define BACKLIGHT_PIN 3
LiquidCrystal_I2C	lcd(0x27,2,1,0,4,5,6,7);
PCF8574 Expander;

int ActiveScene = 0;

void WriteLCD(int Scene){
	switch(Scene){
		case 0:
			lcd.clear();
			lcd.print("Wybierz kolor:");
			lcd.setCursor(0,1);
			lcd.print("OK - START");
		  break;
		case 1:
			lcd.clear();
			lcd.print((char)126);
			lcd.print("Bialy");
			lcd.setCursor(0,1);
			lcd.print(" Czerwony");
		  break;
		case 2:
			lcd.clear();
			lcd.print(" Bialy");
			lcd.setCursor(0,1);
			lcd.print((char)126);
			lcd.print("Czerwony");
		  break;
		case 3:
			lcd.clear();
			lcd.print(" Czerwony");
			lcd.setCursor(0,1);
			lcd.print((char)126);
			lcd.print("Zielony");
		  break;
		case 4:
			lcd.clear();
			lcd.print((char)126);
			lcd.print("Czerwony");
			lcd.setCursor(0,1);
			lcd.print(" Zielony");
		  break;
		case 5:
			lcd.clear();
			lcd.print(" Zielony");
			lcd.setCursor(0,1);
			lcd.print((char)126);
			lcd.print("Niebieski");
		  break;
		case 6:
			lcd.clear();
			lcd.print((char)126);
			lcd.print("Zielony");
			lcd.setCursor(0,1);
			lcd.print(" Niebieski");
		  break;
		case 7:
			lcd.clear();
			lcd.print(" Niebieski");
			lcd.setCursor(0,1);
			lcd.print((char)126);
			lcd.print("Wlasny");
		  break;
		case 8:
			lcd.clear();
			lcd.print((char)126);
			lcd.print("Niebieski");
			lcd.setCursor(0,1);
			lcd.print(" Wlasny");
		  break;
	}
}

int SelectScene(int State0, int State1, int State2){
	switch(ActiveScene){
		case 0:
			if(State0 == LOW)return 0;
			if(State1 == LOW)return 0;
			if(State2 == LOW)return 1;
		  break;
		case 1:
			if(State0 == LOW)return 1;
			if(State1 == LOW)return 2;
			if(State2 == LOW)return 101;
		  break;
		case 2:
			if(State0 == LOW)return 1;
			if(State1 == LOW)return 3;
			if(State2 == LOW)return 102;
		  break;
		case 3:
			if(State0 == LOW)return 4;
			if(State1 == LOW)return 5;
			if(State2 == LOW)return 103;
		  break;
		case 4:
			if(State0 == LOW)return 1;
			if(State1 == LOW)return 3;
			if(State2 == LOW)return 104;
		  break;
		case 5:
			if(State0 == LOW)return 6;
			if(State1 == LOW)return 7;
			if(State2 == LOW)return 105;
		  break;
		case 6:
			if(State0 == LOW)return 4;
			if(State1 == LOW)return 5;
			if(State2 == LOW)return 106;
		  break;
		case 7:
			if(State0 == LOW)return 8;
			if(State1 == LOW)return 7;
			if(State2 == LOW)return 107;
		  break;
		case 8:
			if(State0 == LOW)return 6;
			if(State1 == LOW)return 7;
			if(State2 == LOW)return 108;
		  break;
	}
}

void SendMessage(int msgA){
	const char *msg;
	vw_send((uint8_t *)msg, 1);
	vw_wait_tx();
}

void setup()
{
	Expander.begin(0x20);
	Expander.pinMode(0, INPUT_PULLUP);
	Expander.pinMode(1, INPUT_PULLUP);
	Expander.pinMode(2, INPUT_PULLUP);
	Expander.pinMode(3, INPUT_PULLUP);
	pinMode(A0, INPUT);
	lcd.begin (16,2);
	lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
	lcd.setBacklight(HIGH);
}

void loop()
{
	int State0 = Expander.digitalRead(1);
	int State1 = Expander.digitalRead(3);
	int State2 = Expander.digitalRead(2);

	ActiveScene = SelectScene(State0, State1, State2);
	if(ActiveScene > 50)SendMessage(ActiveScene - 100);
	else WriteLCD(ActiveScene);
	delay(200);

}