https://github.com/gavinlyonsrepo/HD44780_LCD_PCF8574
Library to support the HD44780 LCD , (I2C PCF8574 "backpack" interface) for the Arduino eco system
https://github.com/gavinlyonsrepo/HD44780_LCD_PCF8574
arduino arduino-display arduino-library arduino-platform character-lcd display display-library hd44780 hd44780-display i2c lcd lcd-controller lcd-display lcd-library lcd-screen lcd1602 lcd16x2 lcd2004 lcd20x4 pcf8574
Last synced: 20 days ago
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Library to support the HD44780 LCD , (I2C PCF8574 "backpack" interface) for the Arduino eco system
- Host: GitHub
- URL: https://github.com/gavinlyonsrepo/HD44780_LCD_PCF8574
- Owner: gavinlyonsrepo
- License: gpl-3.0
- Created: 2022-04-06T14:39:06.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2023-07-16T16:20:15.000Z (almost 2 years ago)
- Last Synced: 2025-03-21T04:11:09.377Z (about 1 month ago)
- Topics: arduino, arduino-display, arduino-library, arduino-platform, character-lcd, display, display-library, hd44780, hd44780-display, i2c, lcd, lcd-controller, lcd-display, lcd-library, lcd-screen, lcd1602, lcd16x2, lcd2004, lcd20x4, pcf8574
- Language: C++
- Homepage:
- Size: 70.3 KB
- Stars: 15
- Watchers: 2
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
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# Hd44780_LCD_PCF8574
Table of contents
---------------------------
* [Overview](#overview)
* [Installation](#installation)
* [Software](#software)
* [Output](#output)
* [Tested on](#tested-on)
* [Notes](#notes)
Overview
--------------------
* Name : HD44780_LCD_PCF8574
* Description :
0. Library to support the HD44780 LCD , (I2C PCF8574 "backpack" interface)
for the Arduino Eco system
1. C++ library.
2. Backlight, scroll, cursor and entry-mode control.
3. Custom character support + print class for numerical data.
4. Hardware I2C
5. Tested on size 16x02 + 20x04 (but may work on other sizes eg 16X4 but not tested).
6. Can support both I2C ports on the STM32 see tested section.
* Author: Gavin Lyons
Installation
------------------------------
The library is included in the official Arduino library manger and the optimum way to install it is using the library manager in the Arduino IDE.
Software
--------------------------
**API**
The API (application programming interface) html documentation is at link. Hosted on github pages and generated by Doxygen software. Here the user will find lots of information on files, functions & data types.
[Software API Url Link](https://gavinlyonsrepo.github.io/misc/software_docs/HD44780_LCD_PCF8574/index.html)
Output
---------------------
Output of custom character test in testrun example file on 16x02 display.
20x04 display.
Tested on
------------------------
Tested on following MCUs.
The example files are setup for an UNO/NANO rev 3.0 for the pin connections used
by for other MCU testing see extras/doc folder GPIO_MCU_used.txt file.
1. Arduino UNO & NANO v3
2. ESP8266
3. ESP32
4. STM32 "blue pill", Can support both I2C ports , Use STM32 example file.
5. Arduino UNO R4 minima
Notes
------------------------
1. "stm32duino" board manager core used in testing STM32 "blue pill"
2. For description of entry modes , cursor types, custom characters etc [See]( http://dinceraydin.com/lcd/commands.htm)
3. 16X04 board not tested as not available but should work!
4. I2C Debugging can be turned on by commenting in a define in header file.