HD44780 library for sdcc 51

This library provides support for HITACHI HD44780 based character LCDs (0801, 0802, 1601, 1602, 2004) and some compatible VFD variants like Noritake itron CU20045 (Light adjust available), with fast IO operation

• Suitable for 8051 based MCUs with various crystals and instruction cycles (1T, 6T, 12T) as AUTOMATIC delay calculation is available

• 4bit or 8bit M68 and i80 interface supported

• カタカナ display (MACRO defined) and CGRAM operations also available

• Easy-to-use formattable print function disp_printf(format, ...) similar to normal printf(format, ...)

Usage:

1. Add both hd44780.c and hd44780.h to your project

2. Modify the configurations accordingly in hd44780.h

3. Include hd44780.h in your main.c

4. There are three types of functions operating at different levels. It's recommended to use the high level functions. Look them up at the end of hd44780.h

This library is designed for SDCC only

See test examples

Test with LCD1602

4bit M68 interface with R/#W

Test with LCD2004

4bit M68 interface with R/#W

Test with Noritake CU20045-UW VFD

8bit M68 interface with R/#W

Test with PT6314 based VFM202MDAR2 VFD

This VFD module was possibly produced by BOE. Actually it's almost identical to FUTABA M202MD15FA.

8bit i80 interface with #RD