topic Re: How to debug after download sbl imgae in LPC Microcontrollers

How to debug after download sbl imgae

HuangJames — Fri, 10 Dec 2021 00:59:28 GMT

Hi NXP:

I get the sbl project from https://github.com/NXPmicro/sbl; and I use scons command to generate MDK project. Build project and download image to my board.

As the 《MCUOTASBLSFWUG.pdf》 document mentions: After the image is successfully downloaded to the board, set the board to XIP mode, then reset the board.

After downloading the image, I encountered the following problems:

1.How to set the board to XIP mode?

2.How to debug after board reboot? Downloading the sbl image, I found no log can print after power on the board.

Thank you very much!

Re: How to debug after download sbl imgae

Alice_Yang — Fri, 10 Dec 2021 03:11:25 GMT

Hello HuangJames,

Which chip do you used? LPC55s69?

XIP is used with external flash.

Alice

Re: How to debug after download sbl imgae

HuangJames — Fri, 10 Dec 2021 04:57:05 GMT

Hi Alice：

LPC55S69 JEV98;

-------------

Use a micro USB cable to connect the EVKMIMXRT1170 board to the computer, set the board to serial download
mode. To download the project to the board, click the Download button. After the image is successfully downloaded to
the board, set the board to XIP mode, then reset the board.---From MCUOTASBLSFWUG.pdf

-------------

Does not LPC55S69 support XIP mode？

Another problem：how can debug sbl project?

Thank you very much!

Re: How to debug after download sbl imgae

Alice_Yang — Mon, 20 Dec 2021 04:37:25 GMT

Hello,

1) Does not LPC55S69 support XIP mode？

->> Yes, LPC55s69 has internal flash, XIP is external flash. For LPC55s69, directly download sbl.bin into internal flash.

2) Another problem：how can debug sbl project?

->> It seems it can't debug, download sbl.bin directly.

Alice