Kinetis Design StudioのトピックRe: Bare-board booting

Bare-board booting

syed_idris — Thu, 04 Aug 2016 10:52:33 GMT

Hi all,

We are making the bare-board of KL03 boards as per reference design but we are not using OpenSDA section.
We are planning to debug the KL03 by SWD connector through PEmicro multilink universal Fx, So what is recommended things for us to do for booting up that board ?
Do our KDS work with KSDK and PE codes?
What are the initial steps to do?

Idris

Re: Bare-board booting

BlackNight — Thu, 04 Aug 2016 10:58:34 GMT

Hello Idris,

You don't have to do anything special, but keep an eye on the reset line (pull-up, capacitor). Below is what we use for a K20 (tinyK20, see https://mcuoneclipse.com/2016/02/16/how-to-put-the-kinetis-k20-on-the-tinyk20-board-into-bootloader-mode/ )

The UART1_RX and TX are non-standard (we use that for a UART-2-USB bridge).

And you can use the KL03 with Kinetis Design Studio and the Kinetis SDK. About Processor Expert keep mind that the SDK V2.0 does not support Processor Expert.

I hope this helps,

Erich

Re: Bare-board booting

syed_idris — Thu, 04 Aug 2016 12:20:33 GMT

Ok, means when we power up the board then it will be in bootloader mode,
then directly can we use sample codes of KDS to debug the KL03?
Don't it need to flash a new firmware? If yes, how to flash a new firmware?

Idris

Re: Bare-board booting

jorge_a_vazquez — Fri, 05 Aug 2016 16:56:34 GMT

Hi syed idris

As Erich mentioned, you don't have to do anything special, if you plan to use an external debugger (like SWD connector through PEmicro multilink universal Fx), we recommend to check the KLQRUG (http://cache.freescale.com/files/32bit/doc/quick_ref_guide/KLQRUG.pdf), unit 2. General System setup, section 2.1.5.1 Debug interface. Here you will find hardware considerations for debug interface. As Erich mentioned, keep an eye on the reset line (pull-up, capacitor), and also the state of NMI pin.

Have a great day,
Jorge Alcala

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Re: Bare-board booting

syed_idris — Mon, 08 Aug 2016 13:45:14 GMT

Thanks BlackNight, jorge_a_vazquez,
It worked successfully :smileyhappy:
But after power reset it is not running the previous debugged code.
Every power reset need to debug again.
what could be the reason?
Do we need buffers to store the code or what else?

Idris

Re: Bare-board booting

jorge_a_vazquez — Tue, 09 Aug 2016 19:15:30 GMT

Hi Syed idris

Are you using semihosting in your project? could you share your project to try to find your issue in my side?

Have a great day,
Jorge Alcala

Re: Bare-board booting

syed_idris — Wed, 10 Aug 2016 05:26:50 GMT

I am not using semihosting, I did just LED blinking code. It's working fine but if I remove the power and give power it again so LED is not blinking.

for every power reset it needs me to debug the code again.

I think it is not storing the code.
Is this problem related to IDE?

idris

Re: Bare-board booting

jorge_a_vazquez — Mon, 12 Sep 2016 21:53:29 GMT

Hi syed idris

Sorry for the late reply, Are you still having this problem? KDS default configurations should stored your code in flash, so I don't think this is a IDE problem, could you share your project to try it in my side?

Regards

Jorge Alcala

Re: Bare-board booting

syed_idris — Wed, 14 Sep 2016 05:46:15 GMT

Hi Jorge,
Thanks for your support, it was showing same problem but I flashed the .srec file of project instead of .elf file.
Now after power reset the code is working.:smileyhappy:

Idris