If it works, congratulations you’re halfway towards success.
This shall display a white dot at coordinate (0, 0).
#SSD1963 STM32 DRIVER CODE#
Note: This code assumes 16-bit parallel interface and HX8352C controller. A simple main() function to test the LCD interface: My actual implementation is within the GitHub repository linked below. Implementation of these functions is as simple as following the LCD datasheet. We’ll need to implement the following functions for hardware accessing:Īs the name suggests, these functions handles LCD reset, LCD initialization and read/write data/register from/to the LCD controller. My LCD wiring is as follows : HX8352C wiring diagram If a 100-pin device is used, we can drive LCD using FSMC port and it will be much easier.
#SSD1963 STM32 DRIVER DRIVER#
The reason I choose a 64-pin RCT6 instead of a 100-pin monster is that I wanted to test GPIO to LCD driver performance. My testing hardware is on a STM32F103RCT6 minimalism board. And the 1/3 page paragraph proves to be very useful indeed.įor impatients or who want to criticise my code straight away, please jump to GUIDRV_HX8352C Bare metal LCD driverīefore interfacing the LCD panel with emWin, it is always necessary to make the panel work with bare metal code first. They need to make a profitable business after all. SEGGER charges €1,100 for the source code of a driver. Don’t blame SEGGER or ST for not providing more details.
#SSD1963 STM32 DRIVER HOW TO#
There is a chapter “29.7.20 GUIDRV_Template – Template for a new driver”, roughly 1/3 page long, talking about how to write a display driver.
The LCD controller is Himax HX8352C. I erroneously assume that emWin supports HX8352 and HX8352B so it should support HX8352C, until I wire up the LCD and the garbage churns out.Īs a sincere RTFM user I looked into STemWin documentation. The seller told me he has 10K+ ready stock. I suspect it is some sort of left-overs from mobile phone manufacture. The Truly LCD costs as low as $4 from taobao. The later requires a professional license which is far deeper than my pocket. But as far as I can interpret the usage of STemWin with STM32 micro controllers is free for both commercial or non-commercial cases. SEGGER emWin is also available from NXP, carrying a similar license, or from Keil MDK-ARM. The license term for STemWin is pretty obscure according to my English standard. At the time I’m writing this post STemWin is at verison 1.1, corresponding to SEGGER emWin v5.22. Basically STMicroelectronics licensed it from SEGGER and distribute the library in binary form. ST did great SEO job by changing URL regularly. STemWin is available at (Do not complain if the link does not work.
This post is about how to make the LCD usable with emWin. That is a typical day of mine, and my favourite LCD is a 2.6″ 400×240 IPS panel, model TFT1P5971-E by Truly. But your excitement is quickly balanced by the frustration that your favourite LCD panel is not supported. One lucky day you wake up to find your dream of creating sophisticated graphics user interface for MCU projects comes true, because STMicroelectronics has released a free version of SEGGER emWin for STM32 line of ARM controllers.
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