Kinetis Microcontrollers中的主题 Kinetis Device Identification via Ezport

Kinetis Device Identification via Ezport

stoneface — Wed, 29 Sep 2021 14:15:52 GMT

I'm writing a tool to access the flash memory of K10 type MCUs via the Ezport interface.

Reading, erasing and flashing works fine.

Now I want to read the SIM_SDID register which is at address 4004_8024h, but the Ezport read function seems not to be able to access this address space.

Is there a way to read this register?

Re: Kinetis Device Identification via Ezport

jingpan — Mon, 04 Oct 2021 16:10:57 GMT

Hi @stoneface ,

No, EZport can only access flash. You must use Jtag/SWD to read other register.

Regards,

Jing

Re: Kinetis Device Identification via Ezport

stoneface — Tue, 05 Oct 2021 08:05:27 GMT

Hi jingpan,

thanks for your reply.

I guess that the access is made by the "ARM JTAG-DP" instruction. Until now I managed to read the device identification register via JTAG (IDCODE), but I'm not yet familiar with ARM JTAG-DP instructions. A first search for a good documention was quite dissatisfying.

Can you (or somebody else) give me a hint where to find usefull documention?

best regards

Re: Kinetis Device Identification via Ezport

jingpan — Fri, 08 Oct 2021 06:28:54 GMT

Hi,

You can refer to this document.

https://developer.arm.com/documentation/ddi0314/h/

Regards,

Jing

Re: Kinetis Device Identification via Ezport

stoneface — Fri, 08 Oct 2021 07:02:43 GMT

Hi Jing,

thanks, I will work it over ...

best regards