What are the advantages and disadvantages of using PIC LCD libraries?

1 What are PIC LCD libraries?

PIC LCD libraries are collections of pre-written code that provide functions and macros to control an LCD with a PIC microcontroller. They are usually written in assembly or C language, and they can be downloaded from various sources, such as the official Microchip website, online forums, or blogs. Some PIC LCD libraries are generic, meaning they can work with any LCD module that follows a standard protocol, such as HD44780 or KS0066. Others are specific, meaning they are designed for a particular LCD model or manufacturer, such as Nokia 5110 or ST7920.

2 Advantages of using PIC LCD libraries

One of the main advantages of using PIC LCD libraries is that they save you time and effort. You don't have to write your own code from scratch, or learn the details of how an LCD works. You can simply include the library in your project, and use the provided functions to initialize, configure, and display data on the LCD. This way, you can focus on the logic and functionality of your application, rather than the low-level details of the LCD communication. Another advantage of using PIC LCD libraries is that they can improve the compatibility and portability of your code. If you use a generic library, you can easily switch between different LCD modules, as long as they follow the same protocol. You don't have to change your code or hardware connections, because the library will handle the differences for you. This can be useful if you want to test or compare different LCDs, or if you want to reuse your code for different projects.

3 Disadvantages of using PIC LCD libraries

However, using PIC LCD libraries also has some drawbacks. One of them is that they can increase the size and complexity of your code. Depending on the library, it may contain many functions and macros that you don't need or use, but that still occupy memory and processing power. This can be a problem if you have limited resources on your PIC microcontroller, or if you want to optimize your code for speed and efficiency. Another drawback of using PIC LCD libraries is that they can limit your flexibility and customization. If you use a specific library, you may be restricted to a certain LCD model or manufacturer, and you may not be able to modify the library to suit your needs. For example, you may want to change the font, the contrast, or the backlight of the LCD, but the library may not support these features. Or you may want to use a different protocol or interface for the LCD, but the library may not allow you to do so.

4 How to choose the right PIC LCD library

When deciding whether to use a PIC LCD library or not, and which one to use, there is no definitive answer as it depends on various factors such as project requirements, programming skills, and personal preferences. However, some general guidelines may help make an informed choice. For beginners or those with limited time, using a well-documented, easy-to-use library compatible with the LCD module and PIC microcontroller may be beneficial. Experienced programmers or those with specific needs may prefer to write their own code or modify an existing library for more control and flexibility over the LCD features and settings. To experiment with different libraries and compare their results and performance, look for open-source, modular, customizable libraries or study the datasheet of the LCD module and PIC microcontroller to understand how they communicate.