Kinetis SDK for MK20 at 70MHz

[aroque]

Hi,

I'm using Kinetis Design Studio 3.2.0.

I'm trying to use the lwIP library in my project, which consists of a Kinetis MK20 at 70MHz. For this, I've done some investigation and it seems that using a RTOS would enable some higher level functions of the library, such as opening sockets, which I believe will be needed for my application. To use the RTOS, I believe that I need to create a project with Kinetis SDK enabled.

Using the SDK builder at https://mcuxpresso.nxp.com/en/builder , I have found that the MK20 processor is available, but only the versions at 50MHz and 100MHz. Specifically, my processor ir MK20DX256VLL7, and it does not seem available for the SDK download.

My question is, is it possible to use the SDK from the 100MHz version and somehow adapt it to the 70MHz version?

Best regards,

André Roque

[jingpan]

Hi,

 MK20DX256VLL7 is our old product. So SDK builder do not support it. You can download MQX package(http://www.nxp.com/products/software-and-tools/run-time-software/mqx-software-solutions/mqx-real-tim...) to begin your project.

MQX is freescale's old RTOS. This package support twrk20d72m.

It's not recommended to use MK20DX256xxx10 as the replacement SDK. Because MK20DX256xxx10 is newer than MK20DX256xxx7. The control registers may slightly changed.

[mjbcswitzerland]

Hi

http://www.utasker.com/kinetis/TWR-K20D72M.html
http://www.utasker.com/kinetis/TEENSY_3.1.html

Integrated OS, TCP/IP, USB and FAT stacks for K20D72 (as well as 50MHz, 100MHz and 120MHz K20s).
Builds with KDS 3.2.0, CW, IAR, Keil, Rowley, CooCox Atollic, Green Hills, etc.

Regards

Mark