in RT1042, FlexIO3 does not support DMA transfer?

[5angxr]

in RT1042, FlexIO3 does not support DMA transfer?

I don't see any demo of FlexIO3 DMA transfer in RT1042 sdk v2.15.

[mayliu1]

Hi @5angxr,   

Thank you for your interest in the NXP MIMXRT product, I would  like to provide service for you.

Question :In RT1042, FlexIO3 does not support DMA transfer?

Answer: I import a SDK demo about RT1042, the project include  file MIMXRT1042.h,defined all DMA hardware request sources list.

we can see that FlexIO1 and FlexIO2 were in the list. But FlexIO3 is not in the list.

So FlexIO3 can not support  DMA transfer.   

 

[mayliu1 · Accepted solution]

Hi @5angxr,   

Thank you for your interest in the NXP MIMXRT product, I would  like add more information for you.

1:  I found some detail DMA request signals description in RT 1040 RM.

 https://www.nxp.com/webapp/Download?colCode=IMXRT1040RM

The table below shows the DMA request signals for the peripherals in the chip:

There are only FLEXIO1 and FLEXIO2 in the table, No FlexIO3. 

Best Regards

mayliu