Am 02.03.2015 um 00:53 schrieb Michael Mrozek EvilDragon@openpandora.org:
Am Sun, 1 Mar 2015 22:47:19 +0100 hat "Dr. H. Nikolaus Schaller" hns@goldelico.com geschrieben:
Hi,
With quick browsing, I couldn't find how to switch to Orise mode - do you know that?
Yes, by this magic 0ff 12 83 01 sequence. The data sheet is a little confusing what „Orise mode“ is. And that was the problem why we initially did not understand how to program the panel.
Okay, so both of them will only work when we can switch the panel to Orise mode automatically on power-up, understood.
We should check how well the stuff from the SSD works, what features the panel has and then decide what we really need.
Well, before we can do that, the SSD should work at all :)
Yes, sure :) Did you try playing with the new commands we received on Friday?
I tried to get the SSD to respond, but did not see anything. So there might be something broken in my current setup. Haven’t analysed deeper. Maybe, the timing of the OMAP is sufficient for the direct panel connection but not for the SSD. AFAIR, there were some changes after the last real SSD experiments.
With a little luck we will have 3 more SSD boards by end of next week.
Oh, not even a response at all? You can't even read registers or use the debug information?
yes. No response.
That's a bummer... but wasn't that working before?
yes. It was no problem reading/writing registers.
Or didn't you try that before?
The hardware wiring is done correctly?
There is no change in hardware - except that it might be broken now and was working before. Well, it is not ESD protected and it did go through many hands…
Or: some solder joint is broken by mechanical stress.
Or: we did build two boards and I might have had the other one working. It is too long ago to remember such details :)
Or: there is a subtle difference (e.g. sequence of reset vs. clock enabling) when using the panel-mipi-debug driver and some echo commands instead of the integrated ssd2858 driver.
But that are all hypotheses - only the experiment can show. Unfortunately it is not possible to do such experiments in parallel to building the missing prototypes or PCB layout. So I have put it on the ToDo list that is processed one step after the other.
BR, Nikolaus
-- Mit freundlichen Grüßen,
Michael Mrozek
OpenPandora GmbH Geschäftsführer: Michael Mrozek
Schäffbräustr. 11 85049 Ingolstadt Deutschland Tel.: 0841 / 13 177 33 http://www.openpandora.de/ HRB 4879, Amtsgericht Ingolstadt
eMail: mrozek@openpandora.org