HD44780 (MELT variant)

[Anzo Matrix]

Good daytime.

I bought character LCD 16x2 with analog of HD44780 controller (manufacturer is Russian company named MELT (http://melt.com.ru/)). It supports two codepage. I use LCDSmartie and I need secondary charset. Can I set it with this software?

Command is 0x3A.

[Anzo Matrix]

I wrote this code myself, but new version was appeared.

[limbo]

Sorry about the late reply...

What is your LCD drive type? is it serial?

[Anzo Matrix]

It has parallel interface compatible with HD44780, but includes Russian characters. Secondary charset is CP1251, primary is Russian too but I don't know what encoding in it.

[limbo]

I think you need a special driver to drive the second code page through LCD Smartie...

Please give me more details (maybe some pictures): if you try to write down Russian (cyrillic) what is the result on virtual dispay of LCd Smartie and on your display?

[Anzo Matrix]

Output in program window isn't depend LCD.

For CP1251 is needed to set one bit in 1:

--=Part of ULCD_HD.pas=--
procedure TLCD_HD.init;
const
FuncSet = 34; // was '32'
FSInterface8Bit = 16;
FSInterface4Bit = 0;
--=Part of ULCD_HD.pas=--

Without this thing I had got another Russian encoding (maybe ISO-<something>).

Maybe charset of MELT display (even first half) differs from original controller, but Latin characters and punctuation signs must match Hitachi's one.

NB: "Cylillic" is our ancient alphabet. But it is offtopic.

[ACKET]

You could change this of bit "P" in a command "FunctionSet"?

[ACKET]

Thanks you! I wrote this code myself in lcd_smartie-5.3.2_final release
To send the modify source code for limbo.
--------------------
My english is very weak...

[Anzo Matrix]

People are recommending to put checkbox in program for switching between normal and MELT localized charsets. Can anybody test my code on original LCD to check how much it necessary?