LPC MicrocontrollersのトピックLPC55S69 : ARM errata 838869

LPC55S69 : ARM errata 838869

EugeneHiihtaja — Thu, 12 Dec 2019 08:22:42 GMT

Hello !

I can see interrupt handler in SDk still have errata fix like this :

/* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping
exception return operation might vector to incorrect interrupt */
#if defined __CORTEX_M && (__CORTEX_M == 4U)
__DSB();
#endif

Does it applicable to this type of MCU or it is Cortex4 only ?

As usually it is under ifdef flag, sometimes without.

Regards,

Eugene

Re: LPC55S69 : ARM errata 838869

ZhangJennie — Fri, 13 Dec 2019 03:18:28 GMT

hi Eugene Hiihtaja

Please let me know which SDK demo and which file you are referring to. I will check.

Thanks,

Jun Zhang

Re: LPC55S69 : ARM errata 838869

EugeneHiihtaja — Fri, 13 Dec 2019 06:30:52 GMT

Hi !

In latest LPC55S69 SDK:

does drivers are common for a lot of MCU/Platforms ?

Regards,

Eugene

Re: LPC55S69 : ARM errata 838869

ZhangJennie — Sun, 15 Dec 2019 06:51:46 GMT

>>does drivers are common for a lot of MCU/Platforms ?

Yes, correct.