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neutron3d / u8glib

Automatically exported from code.google.com/p/u8glib
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Touchy Screen gets noise #94

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1.adding additional circuits that are referenced to the same ground plane as 
the screen.

What is the expected output? What do you see instead?
The entire screen looks either all lights up or looks like it flops the rotate 
i've applied and it just looks noisy and the fonts split to every other line.

What version of the product are you using? On what operating system?
Running ssd1325 screen on arduino mega 2560, u8glib version 1.07 

I think that because there is a ground noise issue here, that the best approach 
would be to reinitialize the screen every so often.  Is there any command that 
would simply run the init sequence of the screen again?  Or should I go through 
with physically writing the commands through the SPI comm?

Original issue reported on code.google.com by electric...@gmail.com on 13 Sep 2012 at 2:29

GoogleCodeExporter commented 8 years ago 
reinit is done with this command within Arduino env (not tested):

u8g_InitLL(u8g.getU8g(), u8g.getU8g()->dev);

This should send the init sequence again.

Can you confirm, that everything is ok without the additional circuit?
What about adding some larger caps between ground and power supply?

Original comment by olikr...@gmail.com on 13 Sep 2012 at 3:52