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https://github.com/scitoast/pyboard-LCD-character-display
A hobbyist project to connect a character LCD to the PyBoard
https://github.com/scitoast/pyboard-LCD-character-display
Last synced: 2 months ago
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A hobbyist project to connect a character LCD to the PyBoard
- Host: GitHub
- URL: https://github.com/scitoast/pyboard-LCD-character-display
- Owner: scitoast
- Created: 2016-04-19T15:21:38.000Z (about 8 years ago)
- Default Branch: master
- Last Pushed: 2016-04-19T17:40:30.000Z (about 8 years ago)
- Last Synced: 2024-01-07T21:53:19.302Z (6 months ago)
- Language: Python
- Homepage: https://github.com/scitoast/pyboard-LCD-character-display
- Size: 435 KB
- Stars: 1
- Watchers: 1
- Forks: 1
- Open Issues: 0
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Metadata Files:
- Readme: README.md
Lists
- awesome-micropython - pyboard-LCD-character-display - Pyboar driver for HDD44780-compatible 1602 LCDs. (Libraries / Display)
- awesome-mpython - pyboard-LCD-character-display - PyBoard driver for HDD44780 compatible 1602 LCDs. (精选驱动库 / 显示类)
README
# Using a character LCD display with PyBoard:
## A project including circuit and Python Module!
This project includes a python module with heavily commented code, meant for hobbyists to use and modify, as well as a Fritzing circuit diagram and photograph of the end result. This should allow you to attach a character display screen to your PyBoard very easily.
Required:
- Pyboard 1.1 with micro-SD card
- Standard sized breadboard
- Wires
- Mini breadboard-mount potentiometer
- Some knowledge of Python.
## CHAR_LCD.py
CHAR_LCD.py is a module for micropython (meant for the PyBoard v1.0 or 1.1) meant to allow easy use of LCD character displays of the standard parallel-in type (viz, Hitachi HD44780 or compatible character display chipsets).
The code for this project has been released under the MIT License.
Tested on PyBoard v1.1 running micropython.
(http://www.micropython.org)
TESTED LCDs:
- Generic 16x2 green character display
- Adafruit standard 20x4 blue character LCD
Compatibility:
- Any LCD chipset compatible with the Hitachi HDD44780
This module should give you a pretty self-contained
set of functions for writing text to a character LCD
display of the standard 8-bit-parallel input kind.
This is a library of functions. Not a class. It would be
unnecessary to make this a class, and would complexify
the usage for hobbyists.
This library ASSUMES you are using PyBoard pins X1-X8 to
communicate to the LCD display.
Requires: pyb module; stm module.
###Features Implemented:
- CLEAR / RESET the display
- multiple sizes (e.g. 16x2 or 20x4)
- user specified command & latch pins
- change to command mode or input mode
- LOCATE cursor anywhere on the screen.
- WRITE an ASCII character
- WRITE a string
- WRITE a full line of text
###Not Implemented:
- Scrolling
- Changing the text viewport in memory
- Custom LCD characters
- Serial in / out from character display
- READ from character display
-
### FURTHER READING:
- 'How to Use Intelligent L.C.D.s' by Julyan Ilett, "Constructional Feature".
- (http://lcd-linux.sourceforge.net/pdfdocs/lcd1.pdf)
- Datasheet: LCM Module TC2004A-01
- (https://cdn-shop.adafruit.com/datasheets/TC2004A-01.pdf)
###KNOWN ISSUES:
- (Minor) clear_display() and reset_display() do not show consistent
behavior for all displays.
- (Minor) Sometimes you must call reset_display() twice (in a row)
to get the desired behavior.
### For more information read the code comments.
The code for CHAR_LCD.py is pretty heavily commented because this project is meant for hobbyists just starting out with PyBoard!