NVIC Definition

[Edrianocarlos]

Hello all.

I am creating a project without PE or KSDK.

Just created a project to KL25 Microcontroller and start to code.

now i am trying to configure the NVIC and what i could see is that there is no reference to it

in the MKL25z4.h rev 2.5.  I am using the KDS 3.0 but when i create a project with pe they are using rev 1.8 and there it is all the definitions.

If it is not a bug do i have to define everything from scratch?

**     Reference manual:    KL25P80M48SF0RM, Rev.3, Sep 2012

**     Version:             rev. 2.5, 2015-02-19

**     Build:               b150220

[Edrianocarlos]

Hi i have already found a way to enable NVIC.

NVIC_EnableIRQ(PIT_IRQn);  using the #include <core_cm0plus.h>

I know that using PE i could make the program works fast. but as i came from 8 bits microcontrollers. first i have to understand what i am doing.

Ok now i have this file startup_MKL25Z4.s

where the i have some definitions to vector.

How can i ovewrite for example the PIT_IRQHandler to my function. I can see it is defined in the first .long and after i think it is informed to compiler to rout this interrupt to the default interrupt i think.

Any help would be valuable.

    .long   PIT_IRQHandler                                  /* PIT interrupt*/

    def_irq_handler    PIT_IRQHandler

[Alice_Yang · Accepted solution]

Hello ,

In fact, do you use PE or not ?

(1) If you use PE,  please add your interrupt code to the "Events.c" file .

For example, the component "TimerInt_LDD" , after generate code , we can see :

.

(2) If your project without PE,

you need write a function : void PIT_IRQHandler () {} , then add your interrupt code into it.

And if you want change the name of interrupt function , you need change the two place you mentioned.

Have a great day,
Alice

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