topic Re: Extern interrupt EIF FLAG cannot be cleared in MPC5xxx

Extern interrupt EIF FLAG cannot be cleared

Harry0001 — Thu, 02 Mar 2023 10:25:58 GMT

I used the EIF8 to configuate the interrupt,and i am acknowlaged that the flag can be cleared by writting 1 to EIF8,as the following code shows.However,i checked the register and find that the flag value still is 1!

Please confirm it ,thanks!

Re: Extern interrupt EIF FLAG cannot be cleared

KarlP — Thu, 02 Mar 2023 10:59:59 GMT

== is a comparison, change it to =

Re: Extern interrupt EIF FLAG cannot be cleared

davidtosenovjan — Thu, 02 Mar 2023 11:48:20 GMT

Also you should use .R instance for clearing status flags.

Here I would recommend to pay attention to following document, especially sections 3.2, as it is sources of issues quite often:
http://www.nxp.com/files/32bit/doc/eng_bulletin/EB758.pdf

Re: Extern interrupt EIF FLAG cannot be cleared

Harry0001 — Fri, 03 Mar 2023 13:22:36 GMT

Thanks for your reply,but the link tell me "Page Not Found",could you send it to my email:fuminhui02@163.com，thanks!

Re: Extern interrupt EIF FLAG cannot be cleared

davidtosenovjan — Fri, 03 Mar 2023 14:00:00 GMT

I am sorry, link has been changed to:

https://www.nxp.com/docs/en/engineering-bulletin/EB758.pdf