#include <TinyWireM.h>
#include <Tiny4kOLED.h>

#define OLEDsda 0       // PB0 I2C SDA
#define BtnDwnPin 1     // PB1 Port asigned for Button Down
#define OLEDsck 2       // PB2 I2C SCK
#define MicSwitch 3     // PB3 Port asigned for Buzzer or Mic Switch / MicSwitch
#define BtnUpPin 4      // PB4 Port asigned for Button Up
#define AnalogInPin 5   // PB5 /RESET Port asigned for measuring Vbat

// BUTTONS
bool BtnDwn = false;      // Button Down status
bool BtnUp = false;       // Button Up status
bool BtnPressed = false;  // Both Button(s) status
#define BtnUpRow 0        // Button Up Arrow position on row
#define BtnDwnRow 7       // Button Down Arrow position
#define BtnColPos 120     // Buttons Arrows column position

#define regist PCINT0_vect //All IRQ pins on Attiny85 :)

// GLOBALS
int Timer=0;
int Vbat=0;   // For measuring Vbat


void setup() {
  pinMode(BtnUpPin,   INPUT_PULLUP); 
  pinMode(BtnDwnPin,  INPUT_PULLUP);
  pinMode(MicSwitch,  OUTPUT);
  pinMode(A0, INPUT);   // use PB5 for measuring Vbat

  oled.begin(128, 64, sizeof(tiny4koled_init_128x64br), tiny4koled_init_128x64br);

  // Two fonts are supplied with this library, FONT8X16 and FONT6X8
  oled.setFont(FONT6X8);

  // To clear all the memory
  oled.clear();
  oled.on();
 
  // enable interrupt for pins...
  GIMSK = 0b00100000;    // turns on pin change interrupts
  PCMSK = 0b00010010;    // On pins 1 & 4  

  splash();
  delay(500);
  oled.clear();
  // prepareDisplay();

}

void loop() {
  // put your main code here, to run repeatedly:

}

ISR(regist) {
  //if (digitalRead(BtnDwnPin)==LOW){
  if (!digitalRead( BtnDwnPin )) BtnDwn = true;
  if (!digitalRead( BtnUpPin  )) BtnUp  = true;
}