i.MX RT Crossover MCUsのトピックRe: IMXRT1024 LPUART eDMA is Not Work in From Scratch Project

IMXRT1024 LPUART eDMA is Not Work in From Scratch Project

Lukas_Frank — Mon, 25 Oct 2021 12:56:30 GMT

Hi Dear Authorized,

I created a project without SDK example. I just want to use LPUART, eDMA, GPT, SPI together. In default SDK example eDMA is working fine. But it is not working in my own project created from scratch. I add to configuration for eDMA from SDK Management panel. What can be the reason for "not working" ? Here are the differences between My Project and SDK Example(lpuart_edma_rb_transfer)

Availability	My Project	SDK Example
GPT	Available	N/A
assert	Available	N/A
assert lite	N/A	Available
debug console	Available	N/A
debug console lite	N/A	Available
misc utilities	N/A	Available
serial manager	Available	N/A
serial manager uart	Available	N/A

I thought it can be related with the SDK Management contents. But it seems like not.

What can be the root reason for this issue? I am not able to use eDMA with the project from scratch but able to use in default SDK example.

Thanks and Regards.

Re: IMXRT1024 LPUART eDMA is Not Work in From Scratch Project

FelipeGarcia — Thu, 28 Oct 2021 19:03:18 GMT

Hi Lukas,

I recommend you to compare register configuration in both projects, there should not be any issue with DMA when using LPUART, GPT and SPI in the same project so I assume there is an issue with implementation. Please check also pins and clocks are configured correctly.

An easy way will be to use SDK example as base and then add peripherals one by one making sure everything works before including the next one.

Have a great day,

Felipe

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