Am 06.07.2016 um 07:45 schrieb Dr. Trigon:
> 
> Thanks a lot for the patch. To summarize; its still the same
> situation, do not see any dots/pixels.
> 
I'm out of ideas.


> So I am wondering; can or shall I play with contrast values? Should I
> measure the voltages at the lcds pins? I could e.g. compare the patch
> applied against the voltage measured?
> 
The value is 0x17, which should be somewhere in the middle. You can
adjust the lower 4 bits of "CONTRAST1" and the lower 2 Bits of
"CONTRAST2" to set other values.


> Here is the log: http://dpaste.com/1QWRE11
> 
Nothing wrong in there.


> And what I did:
> 
> ~/owfs-code$ patch -p1 -R < eservice_lcd.diff ~/owfs-code$ patch -p1
> < eservice_lcd-2.diff ~/owfs-code$ make ~/owfs-code$
> module/owserver/src/c/owserver --debug --link=192.168.11.5:10001 (in
> another window) ~/owfs-code$ module/owshell/src/c/owdir /uncached 
> (check for device 29.2F7214000000 - must be the only one existing) 
> ~/owfs-code$ module/owshell/src/c/owwrite /29.2F7214000000/strobe 1 
> ~/owfs-code$ module/owshell/src/c/owwrite
> /29.2F7214000000/LCD_H/clear 1 ~/owfs-code$
> module/owshell/src/c/owwrite /29.2F7214000000/LCD_H/message "Foobar"
> 
That's what I did and with my test circuit it works. Kind of.

Please retry with power-cycling the display, then wait a while, then
send the message. From my testing, the display sometimes goes into a
non-working state when it just flickers on a command instead of
displaying the text.


Kind regards

        Jan

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