topic Re: how can Know about the default settings interrupt priority of M0+/M4 in Kinetis Microcontrollers

how can Know about the default settings interrupt priority of M0+/M4

mackkan — Fri, 17 Apr 2015 10:15:33 GMT

I want to know when not set interrupt priority of M0+/M4,the interrupt priority of my used interrupt ?

thanks

Re: how can Know about the default settings interrupt priority of M0+/M4

ivadorazinova — Fri, 17 Apr 2015 12:48:39 GMT

Hello mack,

It is called NVIC - Nested Vector Interrupt Controller.

Please, check these links:

Introduction for NVIC

https://community.freescale.com/servlet/JiveServlet/previewBody/95191-102-1-7464/Kinetis%20L%20-%20NVIC.pdf

and Using NVIC on Cortex-M4 and Cortex-M0

Using NVIC on Cortex-M4 and Cortex-Mo

NVIC you find in Reference manual for your chip.

I hope this helps,

Best Regards,

Iva

Re: how can Know about the default settings interrupt priority of M0+/M4

mackkan — Fri, 17 Apr 2015 13:12:15 GMT

Hi,Iva

thank you

only set Interrupt,dont set priority,if I use PORTA .this PORT priority is what?

Re: how can Know about the default settings interrupt priority of M0+/M4

Jonathan_Iglesias — Mon, 20 Apr 2015 17:48:51 GMT

Hi, Mack, it depends in the board that you are using, there are 4 levels of priority (from 0 to 3) that you can use,being 0 the one that has more priority, in the reference manual there is a register that you can configure to set the priorities of the interruptions the (IPRx). in the first file that Iva Sent to you, in the page 6 there is some information about the priorities.

For example in the KL25z in the reference manual, P.52 you can find the priority levels for the Ports and a Table that explains it.

Kl24z-Reference Manual.

Regards.

-Jonathan