LCDOUT and 4 *40 displays

[chips123]

I have a 4 line by 40 character LCD that I am wondering how painful it may be to use. Since it has two enable lines, I ran them together and, of course, I have 2 identical 2 * 40 displays. My first thought was to "AND gate" the enable line from the pic with 2 other select lines (port pins) and activate the 2 select lines as needed in the code depending on which half of the display I wanted to write to. I think that would work, but what about any LCD initialization that is happening befor my code gets going? Has anyone been down this road? Thanks much! Scott

[Demon]

It sounds like you are complicating things. I don't get the AND part at all.

I would use 2 pins on the PIC to enable the 2 LCD 'sections', then I would enable whichever I wanted and write to the display.

Do you have a LCD model number? It's much easier when you Google the datasheet and read exactly how the thing is supposed to be used.

Robert

[chips123]

In this thread, Lester discussed using AND gates and Darrel Taylor has another approach. Thanks guys and the Darrel Taylor LCD bargraphs are great!

http://www.picbasic.co.uk/forum/showthread.php?t=631&p=6351#post6351

[rsocor01]

In this thread, Lester discussed using AND gates and Darrel Taylor has another approach. Thanks guys and the Darrel Taylor LCD bargraphs are great!

http://www.picbasic.co.uk/forum/showthread.php?t=631&p=6351#post6351

I also have a 4x40 LCD display and it is very easy to make it work with Darrel's method.