LPC MicrocontrollersのトピックRe: LPC55s69 : Faulthandler in PowerDown mode

LPC55s69 : Faulthandler in PowerDown mode

EugeneHiihtaja — Thu, 05 Dec 2019 17:45:12 GMT

Hello !

in UM is recommended to keep FaultHandler in SRAM when MCU in PowerDown mode.

Do you have code example how do it ?

Regards,

Eugene

Re: LPC55s69 : Faulthandler in PowerDown mode

ZhangJennie — Tue, 10 Dec 2019 06:01:28 GMT

Eugene

I am afraid there is no exact demo code as you requested. But I recommend you refer this doc of Relocating specific functions into RAM:

Relocating code from FLASH to RAM

Have a great day,
Jun Zhang

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

Re: LPC55s69 : Faulthandler in PowerDown mode

EugeneHiihtaja — Tue, 10 Dec 2019 08:20:25 GMT

Hi Jun Zhang !

in ARMv8-M MMU doc I have find out that if MMU is active, MemManage Fault can happens in case of protection violation.

But what is not clear if TZ violation we should have HardFault and if MMU is active memManage as well.

On Secure side MMU is not active and may be only Hardfault should be populated.

Or what handlers should be in RAM in case of active TZ ?

Regards,

Eugene

Re: LPC55s69 : Faulthandler in PowerDown mode

ZhangJennie — Mon, 06 Jan 2020 06:14:51 GMT

I am a bit confused. Is this issue related with the original question about "Faulthandler in PowerDown mode" ?

If it's a new question, Please create a new thread for it. Meanwhile, please be more specific about it and mention what problem you had experienced that make you have this concern?