[Lcdproc] HD44780 40x4 with Backlight and winamp wiring

[Markus Dolze]

Sascha wrote:
> Am Samstag 14 Februar 2009 00:34:10 schrieben Sie:
>   
>> Hello,
>>
>> today I bought some BC327 and built the hd44780 parallel port backlight
>> switching circuit.
>>
>> I put together a patch (attached) that includes some of my previous
>> changes with some modifications for a 40x4 setup.
>>
>> Besides the DATA lines, I used the wiring:
>>
>> LCD      => Parallel Port
>>
>> EN1 (9)  => STRB (1)
>> RW  (10) => GND  (18)
>> RS  (11) => INIT (16)
>> EN2 (15) => SEL  (17)
>> A   (17) => BL switch circuit => LF (14)
>> K   (18) => GND
>>
>> The BL switching circuit lights up the display not too bright. The BL
>> draws current of 260 mA.
>>
>> To see the result: http://mdolze.gmxhome.de/files/lcdproc.avi.
>>
>> Regards
>> Markus
>>     
>
> Yeah! :D It took a long time but my Backlight lights up. I had to make a new 
> cable. 
>
> Thank you for all you help. I will now play around with the settings.
>
> And thanks one more for your help :)
>
>
>   
Attached is the patch mentioned above. The important modification is 
that the EN2 line is set if two displays are attached (as given by the 
'vSpan' option). This now works independent of the availability of the 
backlight.

Any comments?

Markus
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