UART Settings on Cortex-M4 processor in the i.MX8MQ evk.

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UART Settings on Cortex-M4 processor in the i.MX8MQ evk.

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kerazus
Contributor II

Hi,

I ran the demo application in the link below. Then I changed UART2 and set it to UART3. But it didn't work. Does anything need to be tweaked in the kernel? Is it enough to make changes only in demo application?

For example:

uart3 ==> A53 = disable

uart3 ==> M4 = enable 

https://github.com/varigit/freertos-variscite/tree/dart-mx8mq_mcuxpresso-2.12.1_v10/boards/dart_mx8m...

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JosephAtNXP
NXP TechSupport
NXP TechSupport

Hi,

Thank you for your interest in NXP Semiconductor products,

Do UART3 have a clock feed?

Do UART3 have pins initialized?

Are you using 8M-EVKB?

Regards

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kerazus
Contributor II

Hi Josephlinares,

I adjusted what you showed but it didn't work. Do changes need to be made board_init_debug and board.h ? What should we change if necessary?

Thank for your help.

Regards

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JosephAtNXP
NXP TechSupport
NXP TechSupport

Hi,

Yes, please update board.c and board.h uart usage.

Regards,

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kerazus
Contributor II

Thank you for the quick answer.
No, I am using DART-MX8M.

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