Rezo
Senior Member

@miciwan great post! Do you have any reference to information about XBAR besides the technical manual? What other methods are there to trigger a DMA transfer? And how would one attach a clock signal to a DMA transfer...

Did you take your UDS example from a Hackster article? If so it might be mine. I'm not sure 0xF405 will yield anything unless it's being requested from a VW/Audi MQB platform vehicle (that's what I tested on) My...

Positive response will be 0x41 for Mode 01 and 0x62 for mode 22 That’s probably why you’re not going into any of the if conditions in your rx callback

I was hoping to use code based trigger via a display flush callback from LVGL (they did it that way on an STM32F429 example with DMA) But, this is where I feel I have far too less knowledge to even begin with DMA - I...

I believe the file I should be looking into is OctoWS2811_imxrt.cpp, is that correct?

Dynamically, I believe not. The Teensy does not have a mechanism to dynamically allocate RAM into the PSRAM chip. You can declare EXTMEM before variables to place them into the PSRAM memory block - scroll all the way...

You can use the ILI9341_t3n library with DMA, and use the setClipRect function to clear the areas that need to be rewritten on the display.

The music player runs beautifully on the T4.1 with the ILI9488! Thanks for all of your support offline with getting the display running!

Just coming back to this as I am now finally giving it a try. When I set my lv_conf file with the same setting as above I get a bunch of compile errors - so many that I have attached them as a text file. The...