Interrupt driven software for the ST Microelectronics STMF4 Cortex-M4 microcontroller to interface with a Hitachi-compatible HD44780 LCD module. Works in 4bit mode using 7 pins and is 5v compatible, tested on a STM32F4 Discovery with a variety of LCD modules.
Full details can be found here
Copyright 2013 - 2015 Al Brown
al [at] eartoearoak.com
Complete documentation can be found here.
A brief example is included in the source code.
Initialise the driver using:
hd44780_init(gpio, rs, rw, e, db4, db5, db6, db7, lines, font)
gpio - GPIO Port (GPIOA to GPIOE)
rs, rw, e, db4, db5, db6, db7 - Pins (
lines - LCD lines (
font- Font size (
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.