> I have tried to email BLS but fear I am being spam filtered... you there?
I did get one message from you, and replied earlier today. Hopefully
it got through.
A little more update on recent pi playing. I've been working on a
little toy the last few days, namely one of those small SPI driven
LCD panels:
http://www.adafruit.com/products/2441
As of this evening, I've gotten it sort of running alongside the
HDMI display showing the upper left corner. Here are a few
pics of it in operation:
The Pi with the display connected to a keyboard and mouse:
http://cs.drexel.edu/~bls96/9pitft1-s.jpg
and a couple of pics of the display showing acme running:
http://cs.drexel.edu/~bls96/9pitft2-s.jpg
http://cs.drexel.edu/~bls96/9pitft3-s.jpg
It's a long way from being usable though. The fundamental issue
is that there appears to be a very deeply embedded assumption
that a screen must be memory mapped. I tried hooking into
the hwdraw() routine in screen.c, but it seems that not every
change to the screen memory space gets reflected in a call
to hwdraw(). For the pics, I've got a version that periodically
copies the whole of the appropriate area of the Memimage
to the LCD panel over the SPI port. Obviously, that's too slow
and too resource-hungry to be practical. Hopefully, I'm missing
something and there's an elegant way to graft a non-memory
mapped display into the devdraw/memdraw/screen infrastructure.
BLS