Can I use BS2P with 20x4 or Larger Dotmatrix LCD

Duke

I'm wondering is it possible to drive a large LCD Panel with BS2P.
Resently I'm using it with 16x2 LCD and it is very easy to use LCDOUT command.
If I want to use a larger LCD can I use the same command ?

And are there any good links explain this application.

Thank you.

LoopyByteloose

The LCD display has its own microcomputer and memory included. So if you can understand how that is programed, you can use any size.

The big difference is between Character based [noparse][[/noparse]ascii] display input and purely graphic [noparse][[/noparse]dots in 8 bit groups] display.

The graphic display requires a lot more support as many of them use the same chip as the original dot matrix printer. So you have to create your own alphabet and number in EEPROM, find a way to assign an ASCII value, and call up sub-routines for each letter.

In sum, graphic displays require more low-level knowledge.

By the way, many displays have 'hidden' memory that can be paged or scrolled to. This means you can make the software step through a series of pages. In many cases, this allows you to use a smaller size to do the same thing.

After all, if you have 4 pages, the little LCD is really able to provide as much as one 4 times larger without pages.

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G. Herzog in Taiwan

Tom-Matrix Orbital

Programming a serial interface LCD will be even easier, and there are far less wires. You will only use the serout or serin commands with the BSP.

Some examples with Matrix Orbital displays with BS2 units can be found at http://www.matrixorbital.ca/appnotes/basic_stamp/

You can check out different displays at www.matrixorbital.com