On Sun, Feb 15, 2009 at 12:21 AM, Andy Green <[email protected]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Somebody in the thread at some point said: > > | so what I am looking for is 22 pins that I can treat in that way, ie: > | use as regular GPIO, and are in some way exposed on a connector or a > | surface trace that can then be wired to an interface board that will > | carry the display controller itself. > > I'm a fan of bitbang personally :-) but the GPIO controllability on > Glamo would need carefully studying and I can't do it right now due to > dying laptop battery and leaving flight. I wouldn't rule it out we > might be able to do something perfectly in tune with the electrophoretic > bandwidth / response timescale. >
Sounds pretty interesting to me! I'm very excited about it and look forward to your advice. btw, the bitbang mechanism used to transfer data to the controller doesn't have a maximum period, meaning, data is clocked in using a gpio. For example, for the burst write shown previously, I am just cycling the WRITE signal on/off to clock the data into the controller. Of course, it would be best if I can clock that data in very fast, so a gpio that requires more than 50ns to set/clear would still work but would make the display appear slower than it really was. Thanks, jaya _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
