README

Introduction

Welcome to the LCD Library for Arduino and Chipkit. It is a derivate of the original LiquidCrystal Library as sourced in the Arduino SDK. It has been developed to be compatible with the current LiquidCrystal library, its performance is almost 5 times faster and fully extendable if need be.

It supports most Hitachi HD44780 based LCDs, or compatible, connected to any project using: 4, 8 wire parallel interface, I2C IO port expander (native I2C and bit bang) and Shift Regiter.

It currently supports 4 types of connections:

• 4 bit parallel LCD interface
• 8 bit parallel LCD interface
• I2C IO bus expansion board with the PCF8574* I2C IO expander ASIC such as I2C LCD extra IO.
• ShiftRegister adaptor board as described Shift Register project home or in the HW configuration described below, 2 and 3 wire configurations supported.
• ShiftRegister 3 wire latch adaptor board as described ShiftRegister 3 Wire Home
• Support for 1 wire shift register ShiftRegister 1 Wire
• I2C bus expansion using general purpose IO lines.

How do I get set up?

• Please refer to the project's wiki

Contributors

The library has had the invaluable contribution of:

• piccaso - Florian Fida - Flo, thanks for testing and improving the SR library, initial version of the 1 wire interface and speed improvements.
• B. Perry - bperrybap@opensource.billsworld.billandterrie.com, with his thoughtful contribution, speed improvements and development support for the SR2W library.
• Adrian Piccioli, with his contribution to the i2c GPIO support.
• todbot Tod E. Kurt for the softwarei2cmaster library.
• felias-fogg - Bernhard for the softwarei2cmaster fast

Contribution guidelines

• Writing tests
• Code review
• Help out with bug fixing
• Setup a project logo
• Write new drivers to support more LCDs.

Who do I talk to?

• Repo owner or admin
• For SoftI2CMaster latest versions, updates and support, please refer to SoftI2CMaster

License

Lets keep this section very short.

New LiquidCrystal Library by F. Malpartida is licensed under of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version: [[https://www.gnu.org/licenses/gpl-3.0.en.html|GPL v3.0]]

This work was inspired on the Arduino SKD "LiquidCrystal" library and the "LiquidCrystal_I2C" library from Mario_H.

Have fun! Copyright (C) - 2020

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 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 v3.0 along with this program. If not, see GPL V3.