Re: [lcd4linux] Is it possible to use LCD4Linux with a HD44780-compatible LCD, which is attached to the GPIO pins of a Raspberry Pi?

[Johan S. <joh...@xs...>]

Hi,

I would like to disagree. Even though lcd4linux is older then the raspberry, the GPIO-pins of the raspberry are
as versatile as the parallel port of yesteryear.

Using a search engine you will find several people who have connected an LCD to the RPi. For example:
https://learn.adafruit.com/downloads/pdf/drive-a-16x2-lcd-directly-with-a-raspberry-pi.pdf
They even have software, though incompatibel with lcd4linux.

The same search engine will also be able to find you several LCDs with an I2C interface (implemented by
adding a microcontroller board to the LCD). Among them: http://www.bitwizard.nl/wiki/index.php/SPI_LCD

Regards Johan

> Hello Christian,
>
> as lcd4linux is a lot older than raspberry, I don't think that it will work, at least not out-of-the-box.
>
> back in the "good old days" the only GPIO-like thing on a PC used to be the parallel port, and thats what a low-level
> driver exists for (drv_generic_parport), which uses either extremely old school io instructions, or ppdev.
>
> As I have absolutely no idea how GPIOs are controlled on a raspberyy, I cannot advice you how to implement it.
>
> maybe using some kind of i2c-to-parallel chip could work, too.
>
>
>
> regards, Michael
>
> Am 2014-08-31 13:18, schrieb Prof. Dr. Christian Baun:
>> Hi all,
>>
>> is it possible to use LCD4Linux with a LCD (HD44780 compatible
>> controller), which is attached to the GPIO pins of a Raspberry Pi?
>>
>> Has anybody here an example for a lcd4linux.conf file, which makes use
>> of the Raspberry Pi GPIO pins?
>>
>> Best Regards
>>      Christian
>>
>> ------------------------------------------------------------------------------
>> Slashdot TV.
>> Video for Nerds.  Stuff that matters.
>> http://tv.slashdot.org/
>> _______________________________________________
>> Lcd4linux-users mailing list
>> Lcd...@li...
>> https://lists.sourceforge.net/lists/listinfo/lcd4linux-users
>>
>>
>