Rotate GUI for 180 degree

How-to
1

Description

I ran lvgl by means of DMA and also DMA2D. Is it possible to rotate the whole screen by 180 degrees while we use DMA and DMA2D too?

What MCU/Processor/Board and compiler are you using?

stm32f429, gcc

What do you want to achieve?

rotating screen by 180 degrees while running lvgl by means of dma and dma2d.

2

It’s something you’ll have to do in your platform’s driver. Usually (in the case where DMA is not used) it can be done by simply flipping the X and Y coordinates.

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3

In some LCDs, there are 2 pins which determine the direction of a refresh. U/D and L/R pins. Do you mean configuring them?
If yes, I have to say my LCD doesn’t have them.

4

How you rotate the display is platform-specific. It’s not done by LittlevGL for you right now.

The simplest method is to flip the X and Y coordinates in software. However, I’m not sure how that works with regards to DMA.

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