https://github.com/oldmud0/lcdviewer

LCD monitor for Hitachi HD44780 controller
https://github.com/oldmud0/lcdviewer

Last synced: about 1 year ago
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LCD monitor for Hitachi HD44780 controller

• Host: GitHub
• URL: https://github.com/oldmud0/lcdviewer
• Owner: oldmud0
• Created: 2016-09-17T20:52:31.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2016-09-28T02:44:48.000Z (over 9 years ago)
• Last Synced: 2025-02-08T21:48:52.976Z (over 1 year ago)
• Language: Python
• Size: 9.77 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# LCD Monitor

This is a fully functional LCD monitor for Hitachi HD44780 controller, written in Python 3.

![Screenshot](http://i.imgur.com/z5tbiTx.png)

Every LCD packet sent via serial conforms to the following format:

Byte|Value                 |Description

----|----------------------|-----------

   0|`0xFE`                |Magic number

   1|`0xBF`                |Magic number

   2|`0b1111_0[RS, RW, E]` |RS/RW/E pins

   3|`0b[D7...D1]`         |Data pins

If you're interfacing with a plaintext serial monitor and you encounter a message starting with

`FE BF`, it's best to ignore the next two bytes that follow it.

## Requirements

 - Tkinter

 - pyserial

 

## Setup

 - Connect your Arduino.

 - Compile against the modified LiquidCrystal library instead of the vanilla one.

 - Edit `serialport` in `main.py` to the match the Arduino's serial port.

 - Invoke `python main.py`.

 - The Arduino will automatically restart, and the LCD output will appear.

## To do

 - Command-line arguments

 - Safer multithreading

 - Make it flicker less

 - Built-in general serial monitor

 - Change the magic numbers to standard ASCII control characters