Re: [lcd4linux] HD44780 lcd n/w

[Simon C. <sim...@ho...>]

hi Michael thanks for your reply ..i tried the edited .conf as you said to 
no avail...when i power up the board no apparent change in lcd ...i will try 
rebuilding again i tried lcdsmartie still no go ...will keep you 
posted..thanks
any idea why i dont see anything in stderrr window when i run Xterm?..

>From: Michael Reinelt <re...@eu...>
>To: Simon Clare <sim...@ho...>
>CC: lcd...@li...
>Subject: Re: [lcd4linux] HD44780 lcd n/w
>Date: Wed, 22 Dec 2004 14:21:50 +0100
>
>Hi Simon,
>
>>small problem i have a REDHAT 9  2.4.20-8
>>i got the source got it going but my lcd will not work got xterm to work 
>>(no entries in stderr?)
>>and got the X11 too work great...
>
>>#lcd4linux -Fvv
>[...]
>>wiring: [DISPLAY:RS]<==>[PARPORT:AUTOFD]
>>wiring: [display :rw ]<==>[parport:gnd]
>>wiring: [display:enable]<==>[parport:strobe]
>>wiring: [display:enable2]<==>[parport:select]
>>wiring: [display:gpo]<==>[parport:init]
>looks good...
>
>>heres lcd4linux.conf
>[...]
>>Wire.RW "GND"               #RW (pin 5 lcd hardwired to ground)
>>Wire.RS "AUTOFD"           #RS  (pin 4 lcd to pin 14 DB-25 "Autofd")
>>Wire.ENABLE "STROBE"     #E (pin 6 lcd to pin 1 DB-25 "strobe")
>>Wire.GPO "INIT
>looks good, too, but just to be sure, you should add/modify these two 
>lines:
>Wire.ENABLE2 "GND"
>Wire.GPO "GND"
>
>>the data lines (DB0........DB7 on the display,DB1 ....DB8 on the parrallel 
>>port)are connected directly
>>RS pin 4 lcd to pin 14 "autofd"
>>RW hardwired to gnd
>>E pin 6 lcd to pin 1 DB-25
>looks correct, too.
>
>so your wiring seems to be ok. You did double-check, did you?
>
>Does the display work with some other software? (lcdproc, or windows..)
>
>What happens on the display a) if you connect power to it, and b) when you 
>start lcd4linux?
>
>Hmmm.... maybe you're facing the problem that the display requires 5V on 
>the data lines, but your parport provides only 3.3V?
>
>bye, Michael
>
>--
>Michael Reinelt <re...@eu...>
>http://members.eunet.at/reinelt
>GPG-Key 0xDF13BA50
>ICQ #288386781
>
>
>
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