Rockbox mail archiveSubject: Re: things to optimize (was Re: Testers wanted: up to 50% greater battery life)
From: Daniel Stenberg (daniel_at_haxx.se)
On Wed, 30 Jul 2003, TP Diffenbach wrote:
> Oh dear. Is the update smart enough to not update non-scrolling,
No. lcd_update() writes the full frame buffer to the LCD.
For each 8 y-pixels there are 3 commands written, then there's one byte
8*3 + 8*112 = 920 invokes of lcd_write().
That's also why we added lcd_update_rect() which only updates a given
Certainly we can make a function that doesn't update bytes that haven't
> The settings code may or may not take longer; the salient point is the
Remember that we only write to the RTC that often. We write to disk when
-- Daniel Stenberg -- http://rockbox.haxx.se/ -- http://daniel.haxx.se/
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