#include <U8g2lib.h>

#include <Wire.h> // library requires for IIC communication

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); // initialization for the used OLED display

void setup() {
  // put your setup code here, to run once:
pinMode(A0, INPUT);
Serial.begin(115200);

u8g2.begin(); // start the u8g2 library

}

void loop() {
  // put your main code here, to run repeatedly:
int hall_value = analogRead(A0); // 0-1023
int percentage_value = round(abs(hall_value -512) / 5.12);
Serial.println(hall_value);

delay(50);

u8g2.clearBuffer();					// clear the internal memory
//u8g2.drawXBMP(0, 0, 128, 64, epd_bitmap_image_to_oled); // draw fullscreen image generated by image2cpp website

u8g2.setFont(u8g2_font_ncenB14_tr);
u8g2.setCursor(0, 15);
u8g2.print(percentage_value);

u8g2.sendBuffer();					// transfer internal memory to the display
}