Add write_glyph() support to hd44780.py. Update uc1701.py and
st7920.py to support writing single character glyphs via
write_glyph().
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Move the st7920 icon rendering optimizations from display.py to
st7920.py. This simplifies the code for other displays.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
It isn't necessary to use the st7920's xor capabilities when drawing
the bed heating animations. This makes it easier to use the icons for
other displays.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor