Kinetis MicrocontrollersのトピックRe: uart pass-through KL17

uart pass-through KL17

renatodutra — Fri, 25 Nov 2016 21:04:56 GMT

I'm trying to implement an uart pass-through using two ports: uart2 and lpuart0 on the Kinetis KL17. (using KD1.3)
To implement this pass-through I would like to use DMA. I have tried implementing it, but so far I could not make it work.

My code setup is attached.

Any help is appreciated.

TIA.

-rd

Original Attachment has been moved to: dma_init.c.zip

Re: uart pass-through KL17

mjbcswitzerland — Fri, 25 Nov 2016 22:40:31 GMT

You can get UART<->LPUART DMA or interrupt based pass-through in the uTasker project (works for m0+ and m4 based Kinetis processors).

Also, it can do pass-through without the need for UART by transferring GPIOs from one pin to another based on port change triggered DMA.

Regards

Mark

Re: uart pass-through KL17

renatodutra — Mon, 28 Nov 2016 18:21:17 GMT

Mark,

Thanks for the suggestion.

At this point not planning to add "middleware" to the project, however this may be explored in the future.

Regards,

-rd

Re: uart pass-through KL17

Robin_Shen — Tue, 29 Nov 2016 09:15:50 GMT

Hi renatodutra,

Have you try to use the dma_transfer examples in SDK_2.1_MKL17Z256xxx4?

The newer version KSDK is recommanded to use. You can build and download the SDK_2.1_MKL17Z256xxx4 from MCUXpresso Config Tools.

Best Regards,

Robin

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