I have an 44780 compatible display but the brightness control is a little strange.

It requires the RS line to be 1 when sending the brightness commands and LCDOUT seems to always be 0 sending data.

Any thoughts on this.

Can i just set the defined port to 1 before using the lcdout command or will it set it to 0?

Thoughts..

http://www.tme.eu/gr/Document/2b8233...20045-UW5J.pdf