SDK Version: KSDK 2.3.0 for FRDM-K64F has a problem?

[francismarsilva]

The manifest file of SDK Version: KSDK 2.3.0 for FRDM-K64F with Kinetis Design Studio has a problem, making impossible to import the SDK into the MCUXpresso IDE.

[Robin_Shen]

Hi Francismar,

If you want to use the SDK in MCUXpresso IDE, you should select MCUXpresso IDE when building this SDK.

Best Regards,

Robin

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[francismarsilva]

...ok sorry i wrote wrong It was for the KDS!...  Did you take the test? It isn't possible to create a new project based on a demo.

[Robin_Shen]

This Wizard may not used for SDK2.3.

Please try to download new project based on a demo during building SDK2.3.

Best Regards,

Robin

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[francismarsilva]

The download is disabled for me...

[Robin_Shen]

I follow three steps and can do that.

I don't know why your account can't download standalone example project.

Have you try to use a different browser or use new account?

Best Regards,

Robin

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[francismarsilva]

Robin, some demos aren't working on KDS. The procedure I'm doing is: download the demo, for example: demo_apps/lwip/lwip_httpsrv_freertos and then import via KDS menu. The build ok without error, but the application doesn't run in the FRDM. I tested the same demo via MCUXpresso IDE and the SDK for MCUXpresso IDE, and it worked correctly.

Would you have any suggestions to help us?

Thank you.

[Robin_Shen]

Sorry for the late reply!

Please refer feedback from SDK team:

The demo is using malloc / free wrappers for memory allocation in FreeRTOS.
The _sbrk function, which is coming from newlib and is called by malloc, makes a check whether the newly allocated memory does not go over stack pointer.
Since we are using RTOS, the stack is allocated within a heap and the check does not make sense.
The solution could be to overwrite the definition of _sbrk function.

Little bit of information about the problem is here:
https://mcuoneclipse.com/2014/03/16/freertos-malloc-and-sp-check-with-gnu-tools/

The fix is to provide fsl_sbrk.c file with alternative _sbrk() function definition if the project uses FreeRTOS with heap_3.c allocation (wrapper for malloc/free) and it is for arm-gcc based toolchain.

Best Regards,

Robin

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[francismarsilva]

When the package was created, I was choosing KDS only. When I chose "All Toolchains", as in yours, the option to download the demo was enabled.

Thank you!