Cyrillic Font Rendering Issues on 64x32 LED Matrix Display

Question

Cyrillic Font Rendering Issues on 64x32 LED Matrix Display

Opened this issue 4 months ago · 11 comments

Describe the bug
I am experiencing issues with rendering Cyrillic characters on a 64x32 LED matrix display. The text appears distorted, with characters overlapping and misaligned.

To Reproduce
Steps to reproduce the behavior:

Use the provided Cyrillic font data with the Adafruit GFX or similar library.
Render text on a 64x32 LED matrix display.
Observe the overlapping and misaligned characters.
Expected behavior
The Cyrillic characters should render clearly without overlapping, with correct alignment and spacing.

#include <Adafruit_GFX.h>
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>

const uint8_t MyCyrillicFontBitmaps[] PROGMEM = {
// (Include the bitmap array here)
};

const GFXglyph MyCyrillicFontGlyphs[] PROGMEM = {
// (Include the glyph array here)
};

const GFXfont MyCyrillicFont PROGMEM = {
(uint8_t *)MyCyrillicFontBitmaps,
(GFXglyph *)MyCyrillicFontGlyphs,
0x0410, 0x044F, 11 // Start and end character, font height
};

void setup() {
// Initialize display here

// Set font
display.setFont(&MyCyrillicFont);

// Render text
display.setCursor(0, 0);
display.print(F("Привет мир!"));
display.show();

}

void loop() {
// Nothing here
}

Answer 1 · 2024-08-12T05:17:23.000Z

const uint8_t MyCyrillicFontBitmaps[] PROGMEM = {
// (Include the bitmap array here)
};

const GFXglyph MyCyrillicFontGlyphs[] PROGMEM = {
// (Include the glyph array here)
};

Your Cyrillic font bitmaps and glyphs are empty, what are you expecting to see?

Answer 2 · 2024-08-12T06:40:36.000Z

const uint8_t MyCyrillicFontBitmaps[] PROGMEM = {
// (Include the bitmap array here)
};

const GFXglyph MyCyrillicFontGlyphs[] PROGMEM = {
// (Include the glyph array here)
};

Your Cyrillic font bitmaps and glyphs are empty, what are you expecting to see?
-- full version is here
#pragma once
#include <stdint.h>
const uint8_t MyCyrillicFontBitmaps[] PROGMEM = {
0x18, 0x18, 0x38, 0x3C, 0x3C, 0x3C, 0x66, 0x7E, 0x66, 0xC6, 0xC2,
0x7E, 0x60, 0x60, 0x60, 0x7E, 0x67, 0x63, 0x63, 0x63, 0x67,
0x7E, 0x7E, 0x6E, 0x62, 0x6E, 0x7E, 0x67, 0x63, 0x63, 0x63,
0x67, 0x7E, 0x3F, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x30, 0x30, 0x30, 0x3E, 0x36, 0x26, 0x26, 0x26, 0x66, 0x66,
0x66, 0x66, 0x66, 0xFF, 0xC3, 0x3F, 0x30, 0x30, 0x30, 0x3C,
0x30, 0x30, 0x30, 0x30, 0x30, 0x3F, 0x6E, 0xF6, 0xFC, 0x7C,
0x78, 0x78, 0x7C, 0xFC, 0xF6, 0x6E, 0x92, 0x3E, 0x3F, 0x23,
0x07, 0x1E, 0x07, 0x03, 0x03, 0x03, 0x77, 0x3E, 0x00, 0x63,
0x67, 0x67, 0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73, 0x73, 0x63,
0x1C, 0x63, 0x67, 0x67, 0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73,
0x73, 0x63, 0x63, 0x67, 0x66, 0x6C, 0x7C, 0x78, 0x7C, 0x6C,
0x66, 0x66, 0x63, 0x63, 0x1F, 0x1B, 0x1B, 0x33, 0x33, 0x33,
0x63, 0x63, 0x63, 0xE3, 0xC3, 0x82, 0xC6, 0xCE, 0xEE, 0xFA,
0xBA, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x63, 0x63, 0x63,
0x63, 0x63, 0x7F, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x3E,
0x77, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x77, 0x3E,
0x7F, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x7E, 0x67, 0x63, 0x63, 0x67, 0x7E, 0x60, 0x60, 0x60,
0x60, 0x60, 0x1F, 0x38, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x30, 0x38, 0x1F, 0x7F, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
0x08, 0x08, 0x08, 0x08, 0x63, 0x63, 0x63, 0x63, 0x63, 0x73,
0x3F, 0x03, 0x03, 0x03, 0x07, 0x3E, 0x30, 0x30, 0xFE, 0xFE,
0xB3, 0x33, 0x33, 0xB3, 0xFE, 0xFE, 0x30, 0x30, 0xC7, 0x66,
0x6E, 0x3C, 0x3C, 0x18, 0x3C, 0x3C, 0x6E, 0x66, 0xC7, 0xC6,
0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xFF,
0x03, 0x03, 0x63, 0x63, 0x63, 0x63, 0x63, 0x73, 0x3F, 0x03,
0x03, 0x03, 0x03, 0x03, 0x92, 0xB2, 0xB2, 0xB2, 0xB2, 0xB2,
0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xFE, 0x92, 0xB2, 0xB2, 0xB2,
0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xFF, 0x03, 0x03,
0xE0, 0x60, 0x60, 0x60, 0x7E, 0x6E, 0x66, 0x62, 0x66, 0x6E,
0x7E, 0xC2, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3,
0xC3, 0xC3, 0xFF, 0x60, 0x60, 0x63, 0x63, 0x63, 0x63, 0x63,
0x67, 0x66, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6,
0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xFF, 0x03, 0x03, 0x7E, 0x60,
0x60, 0x60, 0x60, 0x60, 0xE0, 0x60, 0x60, 0x60, 0x60, 0x60,
0x3F, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x30, 0x3E, 0x36, 0x26, 0x26, 0x26, 0x66, 0x66, 0x66, 0x66,
0x66, 0xFF, 0xC3, 0x3F, 0x30, 0x30, 0x30, 0x3C, 0x30, 0x30,
0x30, 0x30, 0x30, 0x3F, 0x6E, 0xF6, 0xFC, 0x7C, 0x78, 0x78,
0x7C, 0xFC, 0xF6, 0x6E, 0x92, 0x3E, 0x3F, 0x23, 0x07, 0x1E,
0x07, 0x03, 0x03, 0x03, 0x77, 0x3E, 0x00, 0x63, 0x67, 0x67,
0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73, 0x73, 0x63, 0x1C, 0x63,
0x67, 0x67, 0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73, 0x73, 0x63,
0x63, 0x67, 0x66, 0x6C, 0x7C, 0x78, 0x7C, 0x6C, 0x66, 0x66,
0x63, 0x63, 0x1F, 0x1B, 0x1B, 0x33, 0x33, 0x33, 0x63, 0x63,
0x63, 0xE3, 0xC3, 0x82, 0xC6, 0xCE, 0xEE, 0xFA, 0xBA, 0x82,
0x82, 0x82, 0x82, 0x82, 0x82
};
const GFXglyph MyCyrillicFontGlyphs[] PROGMEM = {
{ 0, 8, 11, 9, 0, -11 }, // 0x0410 'А'
{ 11, 7, 11, 8, 0, -11 }, // 0x0411 'Б'
{ 22, 7, 11, 8, 0, -11 }, // 0x0412 'В'
{ 33, 7, 11, 8, 0, -11 }, // 0x0413 'Г'
{ 44, 8, 11, 9, 0, -11 }, // 0x0414 'Д'
{ 55, 7, 11, 8, 0, -11 }, // 0x0415 'Е'
{ 66, 9, 11, 10, 0, -11 }, // 0x0416 'Ж'
{ 79, 7, 11, 8, 0, -11 }, // 0x0417 'З'
{ 90, 7, 11, 8, 0, -11 }, // 0x0418 'И'
{ 101, 7, 11, 8, 0, -11 }, // 0x0419 'Й'
{ 112, 7, 11, 8, 0, -11 }, // 0x041A 'К'
{ 123, 8, 11, 9, 0, -11 }, // 0x041B 'Л'
{ 134, 7, 11, 8, 0, -11 }, // 0x041C 'М'
{ 145, 7, 11, 8, 0, -11 }, // 0x041D 'Н'
{ 156, 7, 11, 8, 0, -11 }, // 0x041E 'О'
{ 167, 7, 11, 8, 0, -11 }, // 0x041F 'П'
{ 178, 7, 11, 8, 0, -11 }, // 0x0420 'Р'
{ 189, 7, 11, 8, 0, -11 }, // 0x0421 'С'
{ 200, 7, 11, 8, 0, -11 }, // 0x0422 'Т'
{ 211, 7, 11, 8, 0, -11 }, // 0x0423 'У'
{ 222, 7, 11, 8, 0, -11 }, // 0x0424 'Ф'
{ 233, 7, 11, 8, 0, -11 }, // 0x0425 'Х'
{ 244, 7, 11, 8, 0, -11 }, // 0x0426 'Ц'
{ 255, 7, 11, 8, 0, -11 }, // 0x0427 'Ч'
{ 266, 9, 11, 10, 0, -11 }, // 0x0428 'Ш'
{ 279, 9, 11, 10, 0, -11 }, // 0x0429 'Щ'
{ 292, 8, 11, 9, 0, -11 }, // 0x042A 'Ъ'
{ 303, 8, 11, 9, 0, -11 }, // 0x042B 'Ы'
{ 314, 7, 11, 8, 0, -11 }, // 0x042C 'Ь'
{ 325, 7, 11, 8, 0, -11 }, // 0x042D 'Э'
{ 336, 9, 11, 10, 0, -11 }, // 0x042E 'Ю'
{ 349, 7, 11, 8, 0, -11 }, // 0x042F 'Я'
{ 360, 7, 11, 8, 0, -11 }, // 0x0430 'а'
{ 371, 7, 11, 8, 0, -11 }, // 0x0431 'б'
{ 382, 7, 11, 8, 0, -11 }, // 0x0432 'в'
{ 393, 7, 11, 8, 0, -11 }, // 0x0433 'г'
{ 404, 8, 11, 9, 0, -11 }, // 0x0434 'д'
{ 415, 7, 11, 8, 0, -11 }, // 0x0435 'е'
{ 426, 9, 11, 10, 0, -11 }, // 0x0436 'ж'
{ 439, 7, 11, 8, 0, -11 }, // 0x0437 'з'
{ 450, 7, 11, 8, 0, -11 }, // 0x0438 'и'
{ 461, 7, 11, 8, 0, -11 }, // 0x0439 'й'
{ 472, 7, 11, 8, 0, -11 }, // 0x043A 'к'
{ 483, 8, 11, 9, 0, -11 }, // 0x043B 'л'
{ 494, 7, 11, 8, 0, -11 }, // 0x043C 'м'
{ 505, 7, 11, 8, 0, -11 }, // 0x043D 'н'
{ 516, 7, 11, 8, 0, -11 }, // 0x043E 'о'
{ 527, 7, 11, 8, 0, -11 }, // 0x043F 'п'
{ 538, 7, 11, 8, 0, -11 }, // 0x0440 'р'
{ 549, 7, 11, 8, 0, -11 }, // 0x0441 'с'
{ 560, 7, 11, 8, 0, -11 }, // 0x0442 'т'
{ 571, 7, 11, 8, 0, -11 }, // 0x0443 'у'
{ 582, 7, 11, 8, 0, -11 }, // 0x0444 'ф'
{ 593, 7, 11, 8, 0, -11 }, // 0x0445 'х'
{ 604, 7, 11, 8, 0, -11 }, // 0x0446 'ц'
{ 615, 7, 11, 8, 0, -11 }, // 0x0447 'ч'
{ 626, 9, 11, 10, 0, -11 }, // 0x0448 'ш'
{ 639, 9, 11, 10, 0, -11 }, // 0x0449 'щ'
{ 652, 8, 11, 9, 0, -11 }, // 0x044A 'ъ'
{ 663, 8, 11, 9, 0, -11 }, // 0x044B 'ы'
{ 674, 7, 11, 8, 0, -11 }, // 0x044C 'ь'
{ 685, 7, 11, 8, 0, -11 }, // 0x044D 'э'
{ 696, 9, 11, 10, 0, -11 }, // 0x044E 'ю'
{ 709, 7, 11, 8, 0, -11 } // 0x044F 'я'
};

const GFXfont MyCyrillicFont PROGMEM = {
(uint8_t *)MyCyrillicFontBitmaps,
(GFXglyph *)MyCyrillicFontGlyphs,
0x0410, 0x044F, 11 // Start and end character, font height
};

Answer 3 · 2024-08-12T07:18:04.000Z

{ 0, 8, 11, 9, 0, -11 }, // 0x0410 'А'

According to the comments, you use UTF16 cyrillic codes, while Arduino IDE uses UTF8 codes.
For example, the 'А' letter has code 0xD090 in UTF8 codetable.

See more:
https://www.fileformat.info/info/unicode/char/0410/index.htm

PS And as I think, this issue has nothing to do with the library.

Answer 4 · 2024-08-12T07:46:39.000Z

thans for avialable for me, i use vscode-> PlatformIO IDE which is same with arduino IDE i guess. Here is my full bitmap and glyph data for all Cyrillic characters in UTF-8 encoding according to advise. after try below code i got nothing displayed
#include <stdint.h>

// Bitmap data for Cyrillic characters
const uint8_t MyCyrillicFontBitmaps[] PROGMEM = {
0x18, 0x18, 0x38, 0x3C, 0x3C, 0x3C, 0x66, 0x7E, 0x66, 0xC6,
0xC2, 0x7E, 0x60, 0x60, 0x60, 0x7E, 0x67, 0x63, 0x63, 0x63,
0x67, 0x7E, 0x7E, 0x6E, 0x62, 0x6E, 0x7E, 0x67, 0x63, 0x63,
0x63, 0x67, 0x7E, 0x3F, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x30, 0x30, 0x30, 0x3E, 0x36, 0x26, 0x26, 0x26, 0x66, 0x66,
0x66, 0x66, 0x66, 0xFF, 0xC3, 0x3F, 0x30, 0x30, 0x30, 0x3C,
0x30, 0x30, 0x30, 0x30, 0x30, 0x3F, 0xB6, 0xF6, 0xFC, 0x7C,
0x78, 0x78, 0x7C, 0xFC, 0xF6, 0xB6, 0x92, 0x3E, 0x3F, 0x23,
0x07, 0x1E, 0x07, 0x03, 0x03, 0x03, 0x77, 0x3E, 0x00, 0x63,
0x67, 0x67, 0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73, 0x73, 0x63,
0x1C, 0x63, 0x67, 0x67, 0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73,
0x73, 0x63, 0x63, 0x67, 0x66, 0x6C, 0x7C, 0x78, 0x7C, 0x6C,
0x66, 0x66, 0x63, 0x63, 0x1F, 0x1B, 0x1B, 0x33, 0x33, 0x33,
0x63, 0x63, 0x63, 0xE3, 0xC3, 0x82, 0xC6, 0xCE, 0xEE, 0xFA,
0xBA, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x63, 0x63, 0x63,
0x63, 0x63, 0x7F, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x3E,
0x77, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x77, 0x3E,
0x7F, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x7E, 0x67, 0x63, 0x63, 0x67, 0x7E, 0x60, 0x60, 0x60,
0x60, 0x60, 0x1F, 0x38, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x30, 0x38, 0x1F, 0x7F, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
0x08, 0x08, 0x08, 0x08, 0x63, 0x63, 0x63, 0x63, 0x63, 0x73,
0x3F, 0x03, 0x03, 0x03, 0x07, 0x3E, 0x30, 0x30, 0xFE, 0xFE,
0xB3, 0x33, 0x33, 0xB3, 0xFE, 0xFE, 0x30, 0x30, 0xC7, 0x66,
0x6E, 0x3C, 0x3C, 0x18, 0x3C, 0x3C, 0x6E, 0x66, 0xC7, 0xC6,
0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xFF,
0x03, 0x03, 0x63, 0x63, 0x63, 0x63, 0x63, 0x73, 0x3F, 0x03,
0x03, 0x03, 0x03, 0x03, 0x92, 0xB2, 0xB2, 0xB2, 0xB2, 0xB2,
0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xFE, 0x92, 0xB2, 0xB2, 0xB2,
0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xB2, 0xFF, 0x03, 0x03,
0xE0, 0x60, 0x60, 0x60, 0x7E, 0x6E, 0x66, 0x62, 0x66, 0x6E,
0x7E, 0xC2, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3,
0xC3, 0xC3, 0xFF, 0x60, 0x60, 0x63, 0x63, 0x63, 0x63, 0x63,
0x67, 0x66, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6,
0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xFF, 0x03, 0x03, 0x7E, 0x60,
0x60, 0x60, 0x60, 0x60, 0xE0, 0x60, 0x60, 0x60, 0x60, 0x60,
0x3F, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x30, 0x3E, 0x36, 0x26, 0x26, 0x26, 0x66, 0x66, 0x66, 0x66,
0x66, 0xFF, 0xC3, 0x3F, 0x30, 0x30, 0x30, 0x3C, 0x30, 0x30,
0x30, 0x30, 0x30, 0x3F, 0xB6, 0xF6, 0xFC, 0x7C, 0x78, 0x78,
0x7C, 0xFC, 0xF6, 0xB6, 0x92, 0x3E, 0x3F, 0x23, 0x07, 0x1E,
0x07, 0x03, 0x03, 0x03, 0x77, 0x3E, 0x00, 0x63, 0x67, 0x67,
0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73, 0x73, 0x63, 0x1C, 0x63,
0x67, 0x67, 0x6F, 0x6F, 0x7F, 0x7B, 0x7B, 0x73, 0x73, 0x63,
0x63, 0x67, 0x66, 0x6C, 0x7C, 0x78, 0x7C, 0x6C, 0x66, 0x66,
0x63, 0x63, 0x1F, 0x1B, 0x1B, 0x33, 0x33, 0x33, 0x63, 0x63,
0x63, 0xE3, 0xC3, 0x82, 0xC6, 0xCE, 0xEE, 0xFA, 0xBA, 0x82,
0x82, 0x82, 0x82, 0x82, 0x82, 0x63, 0x63, 0x63, 0x63, 0x63,
0x7F, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x3E, 0x77, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x77, 0x3E, 0x7F, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x7E,
0x67, 0x63, 0x63, 0x67, 0x7E, 0x60, 0x60, 0x60, 0x60, 0x60,
0x1F, 0x38, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x38,
0x1F, 0x7F, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
0x08, 0x08, 0x63, 0x63, 0x63, 0x63, 0x63, 0x73, 0x3F, 0x03,
0x03, 0x03, 0x07, 0x3E, 0x30, 0x30, 0xFE, 0xFE, 0xB3, 0x33,
0x33, 0xB3, 0xFE, 0xFE, 0x30, 0x30, 0xC7, 0x66, 0x6E, 0x3C,
0x3C, 0x18, 0x3C, 0x3C, 0x6E, 0x66, 0xC7, 0xC6, 0xC6, 0xC6,
0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xFF, 0x03, 0x03,
0x63, 0x63, 0x63, 0x63, 0x63, 0x73, 0x3F, 0x03, 0x03, 0x03,
0x07, 0x3E, 0x30, 0x30, 0xFE, 0xFE, 0xB3, 0x33, 0x33, 0xB3,
0xFE, 0xFE, 0x30, 0x30, 0xC7, 0x66, 0x6E, 0x3C, 0x3C, 0x18,
0x3C, 0x3C, 0x6E, 0x66, 0xC7
};

// Glyph data for UTF-8 encoded Cyrillic characters
const GFXglyph MyCyrillicFontGlyphs[] PROGMEM = {
{ 0, 8, 11, 9, 0, -11 }, // 0xD090 'А'
{ 11, 7, 11, 8, 0, -11 }, // 0xD091 'Б'
{ 22, 7, 11, 8, 0, -11 }, // 0xD092 'В'
{ 33, 6, 11, 7, 0, -11 }, // 0xD093 'Г'
{ 44, 8, 12, 9, 0, -12 }, // 0xD094 'Д'
{ 56, 6, 11, 7, 0, -11 }, // 0xD095 'Е'
{ 67, 9, 11, 10, 0, -11 }, // 0xD096 'Ж'
{ 78, 7, 11, 8, 0, -11 }, // 0xD097 'З'
{ 89, 7, 12, 8, 0, -12 }, // 0xD098 'И'
{ 101, 7, 12, 8, 0, -12 }, // 0xD099 'Й'
{ 113, 7, 12, 8, 0, -12 }, // 0xD09A 'К'
{ 125, 8, 11, 9, 0, -11 }, // 0xD09B 'Л'
{ 136, 9, 12, 10, 0, -12 },// 0xD09C 'М'
{ 148, 7, 12, 8, 0, -12 }, // 0xD09D 'Н'
{ 160, 7, 11, 8, 0, -11 }, // 0xD09E 'О'
{ 171, 7, 11, 8, 0, -11 }, // 0xD09F 'П'
{ 182, 7, 11, 8, 0, -11 }, // 0xD0A0 'Р'
{ 193, 6, 11, 7, 0, -11 }, // 0xD0A1 'С'
{ 204, 7, 11, 8, 0, -11 }, // 0xD0A2 'Т'
{ 215, 7, 12, 8, 0, -12 }, // 0xD0A3 'У'
{ 227, 10, 12, 11, 0, -12 }, // 0xD0A4 'Ф'
{ 239, 8, 11, 9, 0, -11 }, // 0xD0A5 'Х'
{ 250, 8, 14, 9, 0, -14 }, // 0xD0A6 'Ц'
{ 264, 7, 12, 8, 0, -12 }, // 0xD0A7 'Ч'
{ 276, 9, 12, 10, 0, -12 }, // 0xD0A8 'Ш'
{ 288, 9, 14, 10, 0, -14 }, // 0xD0A9 'Щ'
{ 302, 9, 11, 10, 0, -11 }, // 0xD0AA 'Ъ'
{ 313, 8, 12, 9, 0, -12 }, // 0xD0AB 'Ы'
{ 325, 7, 12, 8, 0, -12 }, // 0xD0AC 'Ь'
{ 337, 7, 11, 8, 0, -11 }, // 0xD0AD 'Э'
{ 348, 8, 11, 9, 0, -11 }, // 0xD0AE 'Ю'
{ 359, 7, 11, 8, 0, -11 }, // 0xD0AF 'Я'
{ 370, 7, 8, 8, 0, -8 }, // 0xD0B0 'а'
{ 378, 6, 11, 7, 0, -11 }, // 0xD0B1 'б'
{ 389, 6, 11, 7, 0, -11 }, // 0xD0B2 'в'
{ 400, 6, 8, 7, 0, -8 }, // 0xD0B3 'г'
{ 408, 6, 11, 7, 0, -11 }, // 0xD0B4 'д'
{ 419, 6, 8, 7, 0, -8 }, // 0xD0B5 'е'
{ 427, 8, 8, 9, 0, -8 }, // 0xD0B6 'ж'
{ 435, 6, 8, 7, 0, -8 }, // 0xD0B7 'з'
{ 443, 6, 8, 7, 0, -8 }, // 0xD0B8 'и'
{ 451, 6, 11, 7, 0, -11 }, // 0xD0B9 'й'
{ 462, 6, 8, 7, 0, -8 }, // 0xD0BA 'к'
{ 470, 6, 8, 7, 0, -8 }, // 0xD0BB 'л'
{ 478, 7, 8, 8, 0, -8 }, // 0xD0BC 'м'
{ 486, 6, 8, 7, 0, -8 }, // 0xD0BD 'н'
{ 494, 6, 8, 7, 0, -8 }, // 0xD0BE 'о'
{ 502, 6, 8, 7, 0, -8 }, // 0xD0BF 'п'
{ 510, 6, 11, 7, 0, -11 }, // 0xD180 'р'
{ 521, 6, 8, 7, 0, -8 }, // 0xD181 'с'
{ 529, 9, 8, 10, 0, -8 }, // 0xD182 'т'
{ 537, 6, 12, 7, 0, -12 }, // 0xD183 'у'
{ 549, 9, 14, 10, 0, -14 },// 0xD184 'ф'
{ 563, 6, 8, 7, 0, -8 }, // 0xD185 'х'
{ 571, 7, 10, 8, 0, -10 }, // 0xD186 'ц'
{ 581, 6, 8, 7, 0, -8 }, // 0xD187 'ч'
{ 589, 9, 8, 10, 0, -8 }, // 0xD188 'ш'
{ 597, 9, 10, 10, 0, -10 },// 0xD189 'щ'
{ 607, 8, 8, 9, 0, -8 }, // 0xD18A 'ъ'
{ 615, 7, 8, 8, 0, -8 }, // 0xD18B 'ы'
{ 623, 6, 8, 7, 0, -8 }, // 0xD18C 'ь'
{ 631, 6, 8, 7, 0, -8 }, // 0xD18D 'э'
{ 639, 7, 8, 8, 0, -8 } // 0xD18E 'ю'
};

// Define the font using UTF-8 encoded glyphs
const GFXfont MyCyrillicFont PROGMEM = {
(uint8_t *)MyCyrillicFontBitmaps,
(GFXglyph *)MyCyrillicFontGlyphs,
0xD090, 0xD18F, 11 // Start and end of UTF-8 encoded Cyrillic range
};

Answer 5 · 2024-08-12T09:01:53.000Z

it might be a problem with a panel itself - did you test it with standard latin font and text?

Answer 6 · 2024-08-12T13:07:20.000Z

it might be a problem with a panel itself - did you test it with standard latin font and text?

yes its fine for latin font

Answer 7 · 2024-08-12T15:23:28.000Z

It seems that the print() method does not support working with multi-byte characters. In such a situation, I can advise using a font in a single-byte encoding of the cyrillic character set - for example Win-1251 or Koi8. And the text from the arduino should first be recoded from UTF8 to font encoding.
You can see an example in my DMD-STM32 library

Answer 8 · 2024-08-13T05:44:34.000Z

DMD-STM32

can i use this library directly with my ESP32

Answer 9 · 2024-08-13T06:45:01.000Z

No, but you could to use this code as an example and port it to your sketch

Answer 10 · 2024-08-31T02:43:55.000Z

does this library support Cyrillic Font in future with ESP32

Answer 11 · 2024-08-31T05:40:34.000Z

What is the library you mean?