topic RT1170 EVKB: PXP, (eLCDIF/LCDIFv2), and emWin in i.MX RT Crossover MCUs

RT1170 EVKB: PXP, (eLCDIF/LCDIFv2), and emWin

lsrbigfoot — Wed, 15 May 2024 18:54:14 GMT

After looking at a few PXP driver examples (namely pxp_lcdif_handshake), it appears that PXP is utilized with eLCDIF.

Ultimately, I am looking to offload/reduce/optimize the execution times for the below emWin call structure (like emwin_gui_demo project) used to drive the multicolor display.

if(condition) { GUI_MULTIBUF_Begin(); GUI_Exec(); GUI_MULTIBUF_End(); }

Depending on the graphics operations being performed, I have measured >20 msec execution times which is quite significant.

Can PXP be used with LCDIFv2? If yes, then how?

Can PXP be used with emWin multi-buffering?

To what degree can PXP help offload/reduce/optimize the execution times for the above calls? What other options do I have (other than GPU2D/VGLite)?

回复： RT1170 EVKB: PXP, (eLCDIF/LCDIFv2), and emWin

Gavin_Jia — Fri, 17 May 2024 08:44:47 GMT

Hi @lsrbigfoot ,

Thanks for your interest in NXP MIMXRT series!

1. Yes, it is supported. You can refer to this AN:https://www.nxp.com/docs/en/application-note/AN13075.pdf
Chapter 5.3 VGLite +PXP + LCDIF implementation

2. There is no clear information about this from my side at the moment.

3. PXP display performance: ~3us @ 8 x 8 pixel; ~6243us @ 480 x 272 pixel. For other optimization methods, consider the choice of DMA, code optimization level, and code execution space.

Best regards,
Gavin

回复： RT1170 EVKB: PXP, (eLCDIF/LCDIFv2), and emWin

lsrbigfoot — Fri, 17 May 2024 18:08:44 GMT

Thank you @Gavin_Jia for response.

Where can I find and download the project source for 'Map_PXP_SingleTask'?

The zip file for AN13075SW is currently corrupted.

I also viewed several SDK_2_XX_Y_MIMXRT1170-EVK(B) packages for 'vglite_examples' subfolder but could not find the Map_PXP_SingleTask project.

回复： RT1170 EVKB: PXP, (eLCDIF/LCDIFv2), and emWin

lsrbigfoot — Fri, 17 May 2024 18:25:18 GMT

...never mind. I found it in the Application Code Hub.