Arduino-LiquidCrystal-I2C-library | LiquidCrystal LCD display connected to an Arduino

by fdebrabander C++ Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | Arduino-LiquidCrystal-I2C-library Summary

Arduino-LiquidCrystal-I2C-library is a C++ library typically used in Internet of Things (IoT), Arduino applications. Arduino-LiquidCrystal-I2C-library has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Library for the LiquidCrystal LCD display connected to an Arduino board.

Support

Quality

Security

License

Reuse

Support

Arduino-LiquidCrystal-I2C-library has a low active ecosystem.

It has 474 star(s) with 478 fork(s). There are 63 watchers for this library.

It had no major release in the last 6 months.

There are 20 open issues and 6 have been closed. On average issues are closed in 264 days. There are 5 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of Arduino-LiquidCrystal-I2C-library is current.

Quality

Arduino-LiquidCrystal-I2C-library has 0 bugs and 0 code smells.

Security

Arduino-LiquidCrystal-I2C-library has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

Arduino-LiquidCrystal-I2C-library code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

Arduino-LiquidCrystal-I2C-library does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

Arduino-LiquidCrystal-I2C-library releases are not available. You will need to build from source code and install.

Installation instructions are available. Examples and code snippets are not available.

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Arduino-LiquidCrystal-I2C-library Key Features

No Key Features are available at this moment for Arduino-LiquidCrystal-I2C-library.

Arduino-LiquidCrystal-I2C-library Examples and Code Snippets

No Code Snippets are available at this moment for Arduino-LiquidCrystal-I2C-library.

Community Discussions

Trending Discussions on Arduino-LiquidCrystal-I2C-library

Protocol for writing data to 16x2 LCD via I2C

QUESTION

Protocol for writing data to 16x2 LCD via I2C

Asked 2017-Jul-01 at 01:13

I am new to electronics and has completed a tutorial on how to operate a 16x2 Character LCD via I2C in Arduino using liquidCrystal_I2C. Everything works fine but I have a question about the low level interaction between the I2C and the LCD. Looking at the library's source code, I notice that when writing a 4 bits nibble (LiquidCrystal_I2C::write4bits), the code writes the nibble to the I2C expander first (LiquidCrystal_I2C::expanderWrite), and then writes again when pulsing the Enable bit. Why is the first expanderWrite necessary? Why can't write4bits just call pulseEnable (with the blacklight bit set)?

I am sure there is a reason as I checked other library like RPLCD and see a similar pattern. Can anyone enlighten me? Thank you.

...

ANSWER

Answered 2017-Jul-01 at 01:13

From the datasheet I found the LCD requires specific timing in the communication protocol. On the rising edge of the enable line the Register Select and Read/Write lines must have already settled for tsu1 (100ns). On the falling edge of the enable line the data must have already settled for tsu2 (60ns). By writing _data they are also writing the RS and R/W lines as they are the lower nibble of _data.

This article covers the topic very thoroughly.

Source https://stackoverflow.com/questions/44836514

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install Arduino-LiquidCrystal-I2C-library

Create a new folder called "LiquidCrystal_I2C" under the folder named "libraries" in your Arduino sketchbook folder. Create the folder "libraries" in case it does not exist yet. Place all the files in the "LiquidCrystal_I2C" folder.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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