topic Re: Issue openning ISPMODE from NXPDEBUGMBOX on LPC55S06 in LPC Microcontrollers

Issue openning ISPMODE from NXPDEBUGMBOX on LPC55S06

Aurelien_Grange — Thu, 19 May 2022 09:18:46 GMT

Hi,

I correctly configure my LPC55S06 to use secure boot and Debug Authentication.

I have an issue I can't go to ISP mode from "nxpdebugmbox ispmode -m 0" command.

How can i do that?

Can i allow this command only for people with correct credential (as defined by AN13037)?

Thanks for helping me

Re: Issue openning ISPMODE from NXPDEBUGMBOX on LPC55S06

Alice_Yang — Sun, 22 May 2022 07:35:26 GMT

Hello,

This is a known issue, the debug mailbox command "Enter ISP mode" doesn't work.

Our SE team has asked internal team to fixed this issue.

Alice

Re: Issue openning ISPMODE from NXPDEBUGMBOX on LPC55S06

Aurelien_Grange — Mon, 23 May 2022 07:50:38 GMT

Hi thanks for your quick answer, have you got some timelines about the end of this issue?

Re: Issue openning ISPMODE from NXPDEBUGMBOX on LPC55S06

Alice_Yang — Thu, 26 May 2022 09:03:35 GMT

Hello ,

It seems the old silicon doesn't support it. Please get date code on the part, send it to me.

Alice

Re: Issue openning ISPMODE from NXPDEBUGMBOX on LPC55S06

Alice_Yang — Mon, 30 May 2022 06:49:10 GMT

Hello ,

Below is information from SE, you can refer to:

The root cause is the command should use "-n" parameter.

The tool always exits from debug mailbox after successful authentication when “--no-exit” parameter is not used. But when you need to execute “enter ISP” command, you should not exit the mailbox to remain in authenticated state.

nxpdebugmbox -p 1.0 auth -b 0 -c dck.dc -k dck.pem -n

Also, need "-n" for "Enter ISP Mode", this avoid the reset and keep the debug permission.

nxpdebugmbox -n -p 1.0 ispmode -m 1

Alice