Version 17 (modified by Sven Killig <>, 10 years ago) (diff)


Supports all 4D Systems Display Graphics Modules. Model is autodetected.


Portserial device the display is attached to (e.g. '/dev/ttyS0')
Speedup to 230400.
ModeText mode: 0 (fast); Graphics mode: 8: 8 bpp; 16: 16 bpp
Font'6x8', '8x8', '8x12' or '12x16' for fonts in ROM or string with number of sector on µSD card
Contrastinitial contrast value, 0..15 (useful range depends on the display)
IconsNumber of user-defined chars reserved for Icons (default: 0)
foregroundForeground color (possible in text mode, too)
backgroundBackground color (possible in text mode, too)
basecolorBase color. '000000' default and recommended for OLEDs.
NoPowerCycle1: Don't turn power on/off between starting/stopping LCD4Linux
ScreenMode1-4: Display rotation

Font on µSD card

1st sector:


From 2nd sector: Images of glyphs of ASCII code 0 to 255 taken with @C command. Generator available here.


  • Make optimized drv_D4D_bar_draw() optional

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