stm32 tft lcd interface made in china

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STONE Technologies is a proud manufacturer of superior quality TFT LCD modules and LCD screens. The company also provides intelligent HMI solutions that perfectly fit in with its excellent hardware offerings.

There is also a downloadable design software called STONE Designer. This is a completely free GUI design software you can use to create responsive digital module-ready user interfaces.

STONE TFT LCD modules come with a microcontroller unit that has a 1GHz Cortex-A8 CPU. Such a module can easily be transformed into an HMI screen. Simple hexadecimal instructions can be used to control the module through the UART port. Furthermore, you can seamlessly develop STONE TFT LCD color user interface modules and add touch control, features to them.

The famous china LCD display manufacturers. It is the world’s leading semiconductor display technology, products, and services provider. Products are widely used in mobile phones, tablets, laptops, monitors, televisions, cars, digital information displays, and other display fields.

Focus on the development and production of china HMI (Intelligent TFT LCD Module) LCD display manufacturers, production, and sales of LCD display modules for 16 years. The company master TFT LCD technology and software system. The main products are industrial electronic series, advanced series, and civil and commercial series. Application scenarios include automation systems, medical beauty equipment, vending machines, smart lockers, energy, and power equipment (refueling machines, charging piles), elevators, smart homes, and offices, measuring instruments, public transportation, etc.

Mainly committed to the r&d, production, and sales of TFT-LCD/stn-LCD /OLED display modules, it is a modern high-tech enterprise that provides a full range of product LCD module technology and manufacturing support services for TCL group member enterprises and international electronic enterprises.

Set an LCD display module (LCM), capacitive touch screen (CTP), fully integrated touch display module (TDM), LCD thin technology development, production, and service in one national high-tech company.

Domestic size of the top four small and medium-sized flat panel display manufacturers. The products cover medium and small-size TFT-LCD display modules and high-precision miniature cameras, which have been widely used in the fields of smartphones, medical treatment, and industrial display.

The LCD business division is specialized in the r&d, production, and sales of the LCD display (LCD) and LCD module (LCM) series of products. It has ten semi-automatic COG production lines, 1.5KK of monthly COG products, covering COG, TAB, COB, and other LCD module products, TFT, CSTN, and other color LCD display products, and OLED display products. touch screen manufacturers.

Byd IT products and business mainly include the establishment of rechargeable batteries, plastic parts, metal parts, hardware, and electronic products, mobile phone keys, microelectronics, LCD display module, optoelectronic products, flexible circuit board, chargers, connectors, uninterruptible power supply, dc power supply, solar energy products, mobile phone decoration, mobile phones ODM, mobile phone test, assembly operations, laptop, ODM, manufacturing, testing and assembly operations, etc.

Star source products cover backlight, LCD, optical diaphragm, etc., widely used in LCD modules, photo frames, tablets, portable, instruments, and meters.

The company has long invested in the research and development of the TFT-lcm LCD module, focusing on consumer products and industrial control products. Currently, 3.5-11.6 inch modules are available, among which 4.0, 4.3, 5, 6, and 10.1-inch products have reached the leading level in the industry. Products are mainly used in vehicles, mobile TV, PMP, DVD, EPC, security, and industrial control products.

Professional development, design, production, and sales of LCD display module (LCM), products cover COB, TAB, COG, and other LCD module products, TFT, CSTN, and other color LCD display products, as well as OLED display products. Products are widely used in mobile phones, communications, digital products, household appliances, industrial control, instrumentation, vehicle display, color screen display, and other fields.

Mainly engaged in research and development, manufacturing, and sales of the LCD display and LCD display module. Products are widely used in all kinds of electronic products and equipment HMI interface, such as medical equipment, instruments and meters, audio, household appliances, telephone and clocks, game machines, and other different types and use.

Focusing on the LCD module industry, is a collection of research and development, manufacturing, sales as one of the high-tech enterprises. TFT module size from 1.44 to 7 inches, product specifications cover QVGA, WVGA, qHD, HD, etc., the market prospects are broad.

The display manufacturers company mainly researches and develops the LCD display, charger, battery, and other products of mobile communication mobile phone, telephone, MP3, and other high-tech products.

The company integrates research and development, design, production, sales, and service into one, and provides comprehensive touch and display integrated solutions for the complete machine touch screen manufacturer of smartphones, specializing in the development and manufacture of Sensor sensors, capacitive touch screens (GFF/OGS/GG), small and medium-sized LCD (TN/HTN/STN/CSTN/TFT) and corresponding modules and glass cover plate products. The company’s products are widely used in communication terminals (smartphone, tablet computer, etc.), household appliances, car electronics, digital products, and other industries, exported to Europe and America, Japan and South Korea, Singapore, and other countries.

Mainly produces medium and small-size LCD display module (LCM), multi-point capacitive touch screen (CTP), and other high-tech products. At present, more than 1000 models of 1.2-12.1 inch products have been developed. Products are widely used in mobile phones, GPS, mobile TV, tablet computers, digital photo frames, e-books, and other consumer electronics.

It is a professional development and production of small and medium-sized flat panel display upstream materials manufacturers. The company’s main products include LCD display panels, color filter, ITO conductive glass (CF), TFT LCD panel, and capacitive touch screen with multi-touch control functions (sensor and the final module), can provide complete medium and small size flat-panel display device using the solution of raw materials, product specifications varieties complete, widely used in 10.4 inches below the smartphone, tablet, PMP, digital camera, digital camera, GPS and other products of the display panel.

Now it is divided into mobile phone business division: the main products are (2.8-6) inch and the LCD screen and capacitive screen all fit together.MID tablet computer and ultrabook computer division: the main production product size is (7-15) inch capacitive touch screen.

Committed to 3.5~4.3 inches, 5 inches, 5.88 inches, 6.2 inches, 7.0 inches, 8.0 inches, 9.7 inches, 10.1 inches, 12.1 inches medium size FOG, backlight process production, products should be widely used in high-end communication phones, tablets, notebook computers, car TV, navigator, and other display products. automotive LCD display touch screen manufacturers.

The company has an injection molding business division, SMT business division, FPC business division, backlight business division, irrigation crystal business division, TFT module business division, SIN module business division, products involving touch screen, LCD display module, backlight, black and white screen, flexible circuit board.

Engaged in the laptop, tablet, smartphone, computer high-performance board card, LCD module, and other electronic products research and development, production, and sales of high-tech private enterprises.

Is a professional engaged in LCD display module, electronic components, production, design, research and development, sales as one of the high-tech enterprises. Products are widely used in mobile phones, game consoles, PDA, portable DVDs, video phones, intercom doorbells, car video, industrial control medical, and other fields.

STONE provides a full range of 3.5 inches to 15.1 inches of small and medium-size standard quasi TFT LCD module, LCD display, TFT display module, display industry, industrial LCD screen, under the sunlight visually highlight TFT LCD display, industrial custom TFT screen, TFT LCD screen-wide temperature, industrial TFT LCD screen, touch screen industry. The TFT LCD module is very suitable for industrial control equipment, medical instruments, POS system, electronic consumer products, vehicles, and other products.

The 1.8inch LCD uses the PH2.0 8PIN interface, which can be connected to the Raspberry Pi according to the above table: (Please connect according to the pin definition table. The color of the wiring in the picture is for reference only, and the actual color shall prevail.)

The example we provide is based on STM32F103RBT6, and the connection method provided is also the corresponding pin of STM32F103RBT6. If you need to transplant the program, please connect according to the actual pin.

ST7735S is a 132*162 pixel LCD, and this product is a 128*160 pixel LCD, so some processing has been done on the display: the display starts from the second pixel in the horizontal direction, and the first pixel in the vertical direction. Start to display, so as to ensure that the position corresponding to the RAM in the LCD is consistent with the actual position when displayed.

The LCD supports 12-bit, 16-bit and 18-bit input color formats per pixel, namely RGB444, RGB565, RGB666 three color formats, this routine uses RGB565 color format, which is also a commonly used RGB format

2. The module_init() function is automatically called in the INIT () initializer on the LCD, but the module_exit() function needs to be called by itself

Python has an image library PIL official library link, it do not need to write code from the logical layer like C, can directly call to the image library for image processing. The following will take 1.54inch LCD as an example, we provide a brief description for the demo.

The demo is developed based on the HAL library. Download the demo, find the STM32 program file directory, and open the LCD_demo.uvprojx in the STM32\STM32F103RBT6\MDK-ARM directory to check the program.

For the screen, if you need to draw pictures, display Chinese and English characters, display pictures, etc., you can use the upper application to do, and we provide some basic functions here about some graphics processing in the directory STM32\STM32F103RB\User\GUI_DEV\GUI_Paint.c(.h)

DEV_Config.cpp(.h): It is the hardware interface definition, which encapsulates the read and write pin levels, SPI transmission data, and pin initialization;

image.cpp(.h): is the image data, which can convert any BMP image into a 16-bit true color image array through Img2Lcd (downloadable in the development data).

The hardware interface is defined in the two files DEV_Config.cpp(.h), and functions such as read and write pin level, delay, and SPI transmission are encapsulated.

Checking a TFT lcd driver is very messy thing especially if its a Chinese manufactured TFT. TFT’s that are supplied by Chinese manufactures are cheap and every body loves to purchase them since they are cheap,but people are unaware of the problems that comes in future when finding the datasheet or specs of the particular TFT they purchased. Chinese manufactures did not supply datasheet of TFT or its driver. The only thing they do is writes about the TFT driver their lcd’s are using on their websites. I also get in trouble when i started with TFT’s because i also purchased a cheap one from aliexpress.com. After so many trials i succeeded in identifying the driver and initializing it. Now i though to write a routine that can identify the driver.

I wrote a simple Arduino Sketch that can easily and correctly identify the TFT Lcd driver. I checked it on 2.4, 3.2 and 3.8 inch 8-bit TFT lcd and it is identifying the drivers correctly. The drivers which i successfully recognized are ILI9325, ILI9328, ILI9341, ILI9335, ST7783, ST7781 and ST7787. It can also recognize other drivers such as ML9863A, ML9480 and ML9445 but i don’t have tft’s that are using this drivers.

The basic idea behind reading the driver is reading the device ID. Since all the drivers have their ID’s present in their register no 0x00, so what i do is read this register and identify which driver tft is using. Reading the register is also a complex task, but i have gone through it many times and i am well aware of how to read register. A simple timing diagram from ST7781 driver explains all. I am using tft in 8-bit interface so i uploaded timing diagram of 8-bit parallel interface. The diagram below is taken from datasheet of ST7781 tft lcd driver.

The most complex tft i came across is from a Chinese manufacturer “mcufriend”. mcufriend website says that they use ILI9341 and ILI9325 drivers for their tft’s. But what i found is strange their tft’s are using ST7781 driver(Device ID=7783). This is really a mesh. I have their 2.4 inch tft which according to their website is using ILI9341 driver but i found ST7783 driver(Device ID=7783). The tft i have is shown below.

I am using Arduino uno to read driver. I inserted my lcd on arduino uno and read the driver. After reading driver i am printing its number on Serial Monitor.

Note:On serial monitor driver number will be displayed like if your lcd is using ST7783 controller than on serial monitor 7783 will be displayed or if tft is using ILI9341 than on 9341 will be displayed.

The code works on Arduino uno perfectly but if you are using any other board, than just change the pin numbers according to the board that you are using also check out for the Ports D and B. TFT Data Pin D0 is connected to Port-B Pin#0 and D1 is connected to Port-B Pin#1. TFT Data Pins D2 to D7 are connected to Port-D Pins 2,3,4,5,6,7. So if you are using Arduino mega than check for the Ports D and B and Make connections according to them. Arduino mega is working on ATmega2560 or ATmega1280 Microcontroller and Arduino uno is working on ATmega328p Microcontroller so both platforms have ports on different locations on arduino board so first check them and then make connections. The same process applies to all Arduino boards.