topic Re: Implementing USB CDC virtual com on a custom board in Kinetis Software Development Kit

Implementing USB CDC virtual com on a custom board

olavbirkeland — Fri, 29 Jan 2016 21:23:06 GMT

I am trying to add USB virtual com port to a custom board using the MK66FX controller. I have searched the forum and internet, but have not succeeded in finding any good instructions on how to do this. There are a lot of information about usb on Kinetic, but most seems to be for evaluation boards or older versions of the SDK no longer supported.

I am using:

KDS3.0

KSDK1.3

MQX Standard

For the moment my project contains the following USB related components:

This compiles and runs, but not surprisingly nothing exciting happening.

There is obviously missing a lot to complete the CDC virtual com function, but I am a little stuck and hope that someone can point me in the right direction to go from here, or maybe I have already started out the wrong way?

Re: Implementing USB CDC virtual com on a custom board

therealfreegeek — Sat, 30 Jan 2016 10:52:55 GMT

Have a look here, it may give you some tips.

CDC | Centaurian

Re: Implementing USB CDC virtual com on a custom board

Kan_Li — Tue, 02 Feb 2016 03:36:47 GMT

Hi Olav Birkeland,

The latest ksdk 2.0 support FRDM-K66F , so maybe you can use it as a starting point for your custom board.

Have a great day,
Kan

NXP Technical Support
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Re: Implementing USB CDC virtual com on a custom board

olavbirkeland — Tue, 02 Feb 2016 10:32:30 GMT

Thanks this was exactly what I was looking for.

However, it still does not work.

When I try to add the fsl_debug_console to my project, I get the following error from PE:

“Common using “fsl_debug_console” and “MQX Standart” RTOS version components is not allowed. “MQX Standard” RTOS component contains own serial “nio” debug console driver”

Is it not possible to have use fsl_debug_console when running MQX standard?

Re: Implementing USB CDC virtual com on a custom board

DavidS — Tue, 02 Feb 2016 15:37:49 GMT

Hi Olav,

Standard MQX does has its own printf/scanf/etc.. functions and does not work with debug_console component.

Regards,

David