looking for bdf of a u8g2 font

[ZombieNoSleep]

I am trying to trim down the data size of a font included in u8g2 using bdfconv but I looked in /tools/font/bdf and cannot find it in there. So, I have 2 questions for anyone that can help please:

1 - can someone point me to the .bdf format of the u8g2_font_6x12_t_symbols
2 - is there any way to convert the u8g2 .c formatted fonts back to .bdf for editing in Fony, etc?

Thanks!

[olikraus]

The 6x12_t_symbols are a subset of the following font:
https://github.com/olikraus/u8g2/blob/master/tools/font/bdf/6x12.bdf

The precise list of unicode glyphs are listed here:

u8g2/tools/font/build/build.c

Line 281 in ec2559e

{ 0, 0, "6x12.bdf", "6x12", 1, 0, BM_T|BM_M, FM_C, MM_C, "32-255,$20a0-$20bf,$2103,$2109,$2126,$2190-$21bb,$21d0-$21d9,$21e6-$21e9,$23e9-$23fa,$2580-$261f,$2654-$2667,$2680-$2685,$2713-$2718,$274f-$2752", "_symbols" },

[ZombieNoSleep]

just downloaded that bdf and opened in Fony (import, bdf), do not see any of the symbols, am i doing something wrong?

[olikraus]

The font might be too big for Fony.
Suitable tools might be "gbdfed" (https://github.com/andrewshadura/gbdfed) or fontforge (https://learn.adafruit.com/custom-fonts-for-pyportal-circuitpython-display/conversion)

[ZombieNoSleep]

ah yes thanks, looks like Fony only displaying 0-255 and won't let me change above 255, fontforge worked to open it fully....next i tryed bdfconv to reduce 6x12.bdf down to a handful of symbols for testing this process

bdfconv -v -f 1 -m "9632-9633,9650-9651,9658-9661,9668-9669" 6x12.bdf -n testfont -o testfont.c

and got the c file:

const uint8_t testfont[126] U8G2_FONT_SECTION("testfont") =
"\12\0\3\2\3\3\1\2\4\6\7\0\0\7\376\12\376\0\0\0\0\0\14A\12}=K\246\15Cf"
"\13\0\0%\240\7m\35\377!%\241\10m\35\67\333\60%\262\12}]a\66-\303\7%\263\14}"
"]a\226DIM\33\6%\272\13\356\35\342\20\15\207H\4%\273\13\356\35b\42e\213$\2%\274"
"\12}\35\277L[\30\1%\304\12\356\235\322p\210\206P%\305\12\356\235\222\262EJ(\0";

put in my code and tried u8g2.setFont(testfont); u8g2.drawGlyph(16,16,9651); for example and not working (display black, doesnt show anything), it works and displays correct character if i change font back to (u8g2_font_6x12_t_symbols)

[olikraus]

hmm it should work like this. What is the output of bdfconv?

[ZombieNoSleep]

[ZombieNoSleep]

what is weird is i can add like capital A, 65 to it in addition to the rest, generate, and can draw.Glyph(x,y,65); just fine but it wont draw the others just black

[ZombieNoSleep]

FIXED it! I was using the wrong bdfconv exe file :) works great now thanks