i.MX ProcessorsのトピックRe: Parallel RGB on IMXRT1176

Parallel RGB on IMXRT1176

Devaharsha — Fri, 10 Feb 2023 10:50:46 GMT

Hi,

I am using NXPs IMXRT1170-EVK board. I want to use LCDIFv2 for a parallel RGB supported panel. With the SDK example - LCDIFv2/rgb565, its using MIPI interface with LCDIFv2.

Is this the only change -

VIDEO_MUX->VID_MUX_CTRL.SET = VIDEO_MUX_VID_MUX_CTRL_PARA_LCD_SEL_MASK;

and how are VSYNC, HSYNC, DOTCLOCK calculated?

Thanks

Re: Parallel RGB on IMXRT1176

Omar_Anguiano — Fri, 10 Feb 2023 21:38:33 GMT

Hello
I hope you are well.

For more detailed information about how to configure these parameters please refer to the following application note: AN12940: Use Case of RT1170 LCD Display System based on MIPI DSI – Application Note (nxp.com)

Best regards,
Omar

Re: Parallel RGB on IMXRT1176

Devaharsha — Sun, 12 Feb 2023 07:29:51 GMT

Hi,

I went through the document you suggested above. It has the formula of VSync and Hsync. But my query is how those values (VSW, VBP, VFP, HSW, HFP, HBP) are written.

I couldn't find those values in the panel driver (RK055MHD091 datasheet or HX8934F datasheet). Though I got minimum values that can be given to those parameters in the HX8934F datasheet. But the values that are used in the sd_jpeg examples are different.

Thanks

Re: Parallel RGB on IMXRT1176

Omar_Anguiano — Tue, 14 Feb 2023 19:33:12 GMT

These values are obtained from the specific datasheet. In specific the datasheet contains some values: Microsoft Word - RK055MHD091A0-CTG.doc (nxp.com)
You should refer to the timing table and modify the macros value according to it.

Best regards,
Omar

Re: Parallel RGB on IMXRT1176

abady1000 — Sun, 11 May 2025 09:56:45 GMT

Hello @Devaharsha,

Were you able to run the video successfully?

I am trying to do the same, I can see the Clock, Vsync, Hsync, but I can't see the data!

How could data be driven out in parallel video?

Could you please share your code with me if it worked with you?