#include <U8g2lib.h>

#define ENCODER_CLK 2   // CLK pin van de rotary encoder
#define ENCODER_DT 3    // DT pin van de rotary encoder
#define BUTTON_SW 4     // SW (push button) pin van de rotary encoder

U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);


void setup() {
  u8g2.begin();
  Serial.begin(9600);
  u8g2.setPowerSave(0);
  u8g2.setDrawColor(1);
  u8g2.setBitmapMode(0);  
  u8g2.clearBuffer(); // required for page drawing mode for u8g2 library

  
  pinMode(ENCODER_CLK, INPUT_PULLUP);
  pinMode(ENCODER_DT, INPUT_PULLUP);
  pinMode(BUTTON_SW, INPUT_PULLUP);

}

void loop() {
  u8g2.setDrawColor(1);
  u8g2.setBitmapMode(0);  

  u8g2.firstPage();  
  do {
        u8g2.drawLine(78, 1, 78, 64);
        u8g2.setFont(u8g2_font_courB08_tr);
        u8g2.drawButtonUTF8(37, 8, U8G2_BTN_HCENTER|U8G2_BTN_BW0, 74,  3,  1, "SPEED TEST" );
        
        u8g2.setFont(u8g2_font_crox4hb_tf);
        u8g2.drawButtonUTF8(37, 31, U8G2_BTN_HCENTER|U8G2_BTN_INV|U8G2_BTN_BW0, 74,  3, 3, "30000" );

        u8g2.setFont(u8g2_font_courB08_tr);
        u8g2.drawButtonUTF8(37, 44, U8G2_BTN_HCENTER|U8G2_BTN_INV|U8G2_BTN_BW0, 74,  3, 0, "RPM" );
    
        u8g2.setFont(u8g2_font_7x14B_tf);
        u8g2.drawButtonUTF8(12, 59, U8G2_BTN_HCENTER|U8G2_BTN_BW1, 20, 1,  1, "3V" );
        u8g2.drawButtonUTF8(51, 59, U8G2_BTN_HCENTER|U8G2_BTN_BW1, 47,  1,  1, "00:10" );

      
      u8g2.sendBuffer(); // send buffer from RAM to display controller

  } while ( u8g2.nextPage() );


}