#include <TinyWireM.h> //Adafruit
#include <TinyLiquidCrystal_I2C.h> //https://www.arduinolibraries.info/libraries/tiny-liquid-crystal_i2-c
#include "A85_PCF8574.h" //https://github.com/debsahu/A85_PCF8574

//#include <LiquidCrystal_I2C.h>
// SDA - P0 - 0 // CLK - P2 - 2

#define PCF8574_ADDRESS (0x20)
#define GPIO_ADDR     0x27

A85_PCF8574 myPCF8574;
TinyLiquidCrystal_I2C lcd(GPIO_ADDR,20,4);
int counter = 0;
int dir = 1;
String a ;

void pattern1(){
  myPCF8574.setBit(0,1); delay(1000);
  myPCF8574.setBit(1,1); delay(1000);
  myPCF8574.setBit(2,1); delay(1000);
  myPCF8574.setBit(3,1); delay(1000);
  myPCF8574.setBit(4,1); delay(1000);
  myPCF8574.setBit(5,1); delay(1000);
  myPCF8574.setBit(6,1); delay(1000);
  myPCF8574.setBit(7,1); delay(1000);

  myPCF8574.setBit(0,0); delay(1000);
  myPCF8574.setBit(1,0); delay(1000);
  myPCF8574.setBit(2,0); delay(1000);
  myPCF8574.setBit(3,0); delay(1000);
  myPCF8574.setBit(4,0); delay(1000);
  myPCF8574.setBit(5,0); delay(1000);
  myPCF8574.setBit(6,0); delay(1000);
  myPCF8574.setBit(7,0); delay(1000);

}

void pattern2(){
  myPCF8574.setByte(B11110000);
  delay(1000);
  myPCF8574.setByte(B00001111);
  delay(1000);
}

void pattern3(){
  myPCF8574.setByte(B10101010);
  delay(1000);
  myPCF8574.setByte(B01010101);
  delay(1000);
}

void pattern4(){
  allon();
  delay(1000);
  alloff();
}

void alloff(){
  myPCF8574.setByte(B00000000);
}

void allon(){
  myPCF8574.setByte(B11111111);
}

void setup()
{

//TinyWireM.begin();                    // initialize I2C lib
  lcd.init();                           // initialize the lcd
  lcd.backlight();                      // Print a message to the LCD.
  lcd.print("Hello, Temp!");
  delay (2000);
  myPCF8574.begin(PCF8574_ADDRESS);
}

// The loop function is called in an endless loop
void loop()
{
   //myPCF8574.setByte(B10111110);
   
 // delay(1000);
  //pattern1();
 //allon();
  //delay(1000);
  //alloff();
  //delay(1000);
 // pattern2();
 // delay(1000);
  //pattern3();
 // delay(1000);
 // pattern4();
 a = myPCF8574.getByte();
}