#include <U8g2lib.h>
#define button 7
U8G2_MAX7219_32X8_F_4W_SW_SPI u8g2(U8G2_R2, /* clock=*/8, /* data=*/10, /* cs=*/9, /* dc=*/U8X8_PIN_NONE, /* reset=*/U8X8_PIN_NONE);

const unsigned char epd_bitmap_matrix_display_counter[] = {
    0x7e, 0x67, 0x75, 0x77, 0xef, 0x21, 0x15, 0x44, 0xe7, 0x21, 0x15, 0x44, 0xe3, 0x27, 0x77, 0x77,
    0xe7, 0x24, 0x11, 0x15, 0xef, 0x24, 0x11, 0x15, 0x7e, 0x77, 0x71, 0x77, 0x00, 0x00, 0x00, 0x00};

const unsigned char youtube_logo_bitmap[] = { // youtube bitmap logo, 8x7 px
    B01111110,
    B11101111,
    B11100111,
    B11100011,
    B11100111,
    B11101111,
    B01111110};

byte digits[6] = {0, 0, 9, 9, 9, 8};             // individual digits to be displayed on the matrix display
byte digits_offset_perc[6] = {0, 0, 0, 0, 0, 0}; // y offset for the individual digits - percentage 0-100%
char digit_char[2];                              // helper array for storing C-style string
char digit_char_next[2];                         // helper array for storing C-style string

float y_offset; // y pixel offset for digit

void setup(void)
{
  u8g2.begin();              // begin function is required for u8g2 library
  u8g2.setContrast(10 * 16); // set display contrast 0-255
    u8g2.setFont(u8g2_font_3x5im_tr); // choose a suitable font with digits 3px wide
  // u8g2.setFlipMode(1);  
}

void loop(void)
{
  delay(10); // wokwi
  u8g2.drawStr(0, 7, "1234"); // draw the current character to the display
  
  u8g2.sendBuffer(); // transfer internal memory to the display
}