ESP32/components/u8g2/sys/utf8/frame_rotate_picture_loop/main.c

/*
  this example was written to debug a problem with a display width, which
  is not multiple of 8.
  the display width is set to 102 for this purpose
*/



#include "u8g2.h"
#include <stdio.h>


  
u8g2_t u8g2;

int main(void)
{

  u8g2_SetupBuffer_Utf8(&u8g2, U8G2_R3);
  
  
  u8g2_InitDisplay(&u8g2);
  u8g2_SetPowerSave(&u8g2, 0);  
  
  u8g2_SetFont(&u8g2, u8g2_font_6x13_tf);
  u8g2_SetFontDirection(&u8g2, 0);
  
  u8g2_FirstPage(&u8g2);
  do
  {     
    printf("u8g2.tile_curr_row=%d\n", u8g2.tile_curr_row);
    printf("u8g2.pixel_curr_row=%d\n", u8g2.pixel_curr_row);
    printf("u8g2.buf_y0=%d\n", u8g2.buf_y0);
    printf("u8g2.buf_y1=%d\n", u8g2.buf_y1);
    printf("u8g2.user_x0=%d\n", u8g2.user_x0);
    printf("u8g2.user_x1=%d\n", u8g2.user_x1);
    printf("u8g2.user_y0=%d\n", u8g2.user_y0);
    printf("u8g2.user_y1=%d\n", u8g2.user_y1);
    u8g2_DrawFrame(&u8g2, 0, 0, 
      u8g2_GetDisplayWidth(&u8g2), u8g2_GetDisplayHeight(&u8g2));
    u8g2_DrawPixel(&u8g2, 3, 3);
    //u8g2_DrawHLine(&u8g2, 0, 0, u8g2_GetDisplayWidth(&u8g2));
    //u8g2_DrawHLine(&u8g2, 0, u8g2_GetDisplayHeight(&u8g2)-1, u8g2_GetDisplayWidth(&u8g2));
    //u8g2_DrawHLine(&u8g2, 0, 32, 10);
    u8g2_DrawStr(&u8g2, 10, 20, "Frame");
    //u8g2_DrawStr(&u8g2, u8g2_GetDisplayWidth(&u8g2)-9, 10, "Frame");
    //u8g2_DrawStr(&u8g2, u8g2_GetDisplayWidth(&u8g2)-8, 20, "Frame");
    //u8g2_DrawStr(&u8g2, u8g2_GetDisplayWidth(&u8g2)-7, 30, "Frame");
  } while( u8g2_NextPage(&u8g2) );
    
  utf8_show();
  
  printf("DisplayWidth = %d\n", u8g2_GetDisplayWidth(&u8g2));
  
  return 0;
}