display
Today, more and more products pay more attention to user experience. Many electronic products will be equipped with a display screen to improve the grade of the product and facilitate human-computer interaction . Here, complex human-machine interface design becomes a pain point in embedded development.
At present, the display screen used in most electronic products is still dominated by LCD (liquid crystal display).
There are usually two ways to develop a product with a cool interface with LCD: 1. Realize with off-the-shelf GUI technology; 2. Secondary development based on LCM module; each of the two methods has its own characteristics.
Difference between LCD (Liquid Crystal Display) and LCM (Liquid Crystal Module)
LCD : Liquid Crystal Display, liquid crystal display
LCM: Liquide Crystal Module, liquid crystal display module
Usually we buy an LCD screen on Taobao, plug it into the development board and use it directly. This is actually an LCM LCD module with a chip (controller) .
The liquid crystal module includes liquid crystal and various accessories under the liquid crystal display screen, such as touch, backlight, controller (and corresponding peripheral circuits) , and even integrates fonts, pictures, etc.
In short: LCM contains LCD, and corresponding peripheral devices.
How to quickly develop cool interfaces
For many engineers who have done GUI development, the first thing that comes to mind is to use GUI, such as Qt, emWin, LVGL, etc.
Can these GUIs quickly develop cool interfaces? of course can!
However, for those engineers who have never used GUI or even know what a GUI is, what should they do if they want to quickly develop a product with a cool interface?
The answer is very simple, choose an LCM liquid crystal module that can be developed twice , such as this:
It is best to bring your own memory, which can store modules with functions such as text and pictures.
This kind of mod only requires you to download the cool interface (for example: make a picture with PS) into the mod, and control it through commands (such as serial port commands) .
For students who have not used GUI, this method is the fastest, and only needs to be familiar with the communication protocol (this communication protocol is generally very simple, most of which are similar to " custom communication protocol ").
Heavyweight: COF screen 0 yuan trial? necessary!
I have mentioned the content related to Beijing Diwenping many times before, and I have also seen that many small partners are using Diwenping.
Here is a heavy recommendation for everyone: try Diwen Smart Screen for free , and have the opportunity to get a cash reward of 1,000 yuan.
Event time: from now until 2022.3.31
way of participation:
Scan the QR code below to fill in the information application, fill in the corresponding personal receipt information , which channel to see this event (fill in the chip home ), a simple project introduction, remember to write a project description of more than 50 words, the more you write Clearly, the easier it is to get a free trial!
Scan the code to try
Share your trial experience:
Applicants need to share their trial hearts on the Diwen Developer Forum (http://inforum.dwin.com.cn:20080/forum.php), and users who develop application cases based on samples and open source in the forum can get a cash reward of 1,000 yuan !
Introduction of Diwen COF smart screen
The product applied for trial is Divin COF smart screen , which is based on Divin low-power dual-core T5L0 ASIC. The entire smart screen core circuit is placed on the LCD module FPC, integrated with the touch screen , and the user's CPU core IO, UART, CAN , AD, PWM and other interfaces lead to products on the FPC interface . The GUI of the product is developed based on the picture material through the DGUS platform , and the user system is developed based on the standard 8051 through the OS core. (with product model table and shape diagram)
Product number:
Product form:
Product advantages: light and thin structure, mild working environment, and strict cost requirements.
Diwen COF smart screen application information can be downloaded from Diwen official website (www.dwin.com.cn ) or Diwen developer forum (http://inforum.dwin.com.cn:20080/forum.php)! Click to read the original text directly to the forum!