I am able to load custom characters into an LCD (uses HD44780) immediately after power up.
Now I need to load another set of characters (overwrite the existing ones). So I set the CGRAM address to 0 and load the bit patterns. But this does not work. I get garbled characters that change after every power up.
Joined: 03 Mar 2008 Posts: 55
Posted: Fri Jun 19, 2009 2:46 am
CG : RAM
Data are lost after a power down, you'll need to re-charge them every power-up. _________________ yup, i know, i don't speak english very well
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