Dnia 10-01-2012 o 20:02:44 Markus Gaugusch <mar...@gaugusch.at> napisaƂ(a):

I also have a Hoby borads type of display. Mine is 2x16. It's made on a  
standard board.
It seems pretty reliable I refresh it every 10 minutes and it runs for  
months.
I refresh it by writing 1 to LCD_H/clear and then I write first and second  
line using LCD_H/screenyx.
The only problem is when the display looses power and resets so there are  
only black boxes in the first row.
I think after that it need complete reinitialization but owfs does not now  
about it because the communication is one way.
I'm not sure if DS2408 can sens the power disruption.

When you restart owfs it reinitializes the display. I don't know it there  
is a way to explicitly reinitialize the display.

I don't know if this is related but I have all the lines pulled up (even  
those unused)
If you don't need extra 4 outputs/inputs which are not fully operable when  
using display you can rewire your design to maxim design.
http://www.maxim-ic.com/images/appnotes/3286/3286Fig01.pdf
I checked it on a breadboard and it works. Theoretically it should be  
twice as fast as Hobby Boards so it's preferable for bigger displays.



-- 
p4trykx

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