Am Sa 14. Februar 2009 schrieb Jaya Kumar: > ni hao and hello OpenMoko friends, > > Ok, to explain my interest quickly: what I hope to do is to take an > openmoko and add an E-Ink display, possibly replacing the LCD if > necessary. It is too early for this to be useful to people so I do not > want to consume any significant time or effort from OpenMoko's > developers. I'm willing to do this on my own. > > I'm the author of the E-Ink display controller drivers in the mainline > linux kernel, and have been working on making broadsheetfb, the driver > for E-Ink's latest controller behave in a way such that generic Linux > applications can run on it without any modification. I have had some > good initial results which I have shown. eg: videos here ( mozilla > fennec on e-ink, http://www.youtube.com/watch?v=k4WBdagDgSg ) and > various articles here ( > http://highlycomposite2.blogspot.com/search/label/e-ink ). > > I feel I have a clear idea of how to achieve this idea of adding an > E-Ink panel to a phone, the only constraint is that I need 22-pins of > GPIO. I asked Harald and he had suggestions and pointed out that the > 22-pin constraint may be a serious problem. I'm willing to sacrifice > certain other peripherals to get that count. I was searching the > openmoko wiki for GTA03 gpio pinout or some idea of a list of signals > that are brought to surface pads or traces that I could then tap onto. > Is this available? > > I had also looked at GTA02 pins: > https://svn.openmoko.org/trunk/doc/hardware/GTA02v4/gpio.txt > based on that, some notes for myself: > - abandon bluetooth 1 > - abandon sd card 6 > - abandon LCD and repurpose those LCD's interface pins that can be > repurposed as gpio, i think this gives me about 5 pins but not sure if > all are brought to connector (lcdvf0,1,2, lcdhclk, lcdpwren), > - so insufficient gpio. have to use gpio extender connected via i2c or > uart. a big latency penalty though. > - so look at gta03 and hope for inspiration :-) > > Any advice and suggestions would be greatly welcome.
You need those 22 gpio *in addition* to the LCM data lines from glamo to lcm? cheers jOERG
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