Problem with LCD 128x160 ST7735S

Forum|Forum|2 years ago
August 24, 2024
5 replies
2248 views

Hi, have any of you communicated with a display based on the ST7735S controller?

Based on this library: https://github.com/afiskon/stm32-st7735 I converted it from SPI communication to 8080 parallel control, but display does not work properly, while filling the screen with color works, writing text, drawing pixels or squares does not, everything is visible in the video in attachment.

Below link to my project:

https://github.com/apaczenko1993/KTLCD9

Thanks for help.

example.mp4

STM32F1 series

This topic has been closed for replies.

Best answer by MSzła.1

OK, now the library works, the cause of this problem was that I forgot setup the RDX pin (read enable). After setting this pin as in the datasheet when writing data and commands the library works very well. About

Tomorrow I will upload the project to Github for everyone :)

AScha.3

Super User

Hi,

Yes, I'm using the small TFT, but with SPI connection.

Why you don't use it with SPI?

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MSzła.1Author

Associate III

I can't use SPI because the PCB is from an ebike computer. Exactly from the photo. They use the 8080 parallel interface to communicate with LCD

AScha.3

Super User

Ok, but on the video it's working, just some error in writing seems to be there, maybe you should try to make the timing more relaxed/slower, seems to be a timing/access problem.

If you feel a post has answered your question, please click on " Best Answer ".

MSzła.1AuthorBest answer

Associate III

OK, now the library works, the cause of this problem was that I forgot setup the RDX pin (read enable). After setting this pin as in the datasheet when writing data and commands the library works very well. About

Tomorrow I will upload the project to Github for everyone :)

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