S32K3 PIT timer callback

Luca_Ferioli — Tue, 19 Dec 2023 17:23:20 GMT

I'm starting off development on a platform which I’ve never used before, I’m working on the S32K3X4EVB-T172: i made a blinker to get the hang of the various tools, first and foremost the Pins tool.
I feel like i jumped through too many hoops in order to get this done, i would like anyone to point out whether i missed something or if i overcomplicated things.

Here is what confused me the most:

1) the PIT driver does not provide a function to clear the interrupt flag of the PIT0 peripheral: since i could not find a way to access the registers directly as i was used to do on MPC5604C, i modified the Pit_Ip driver to provide said function; this is clearly sub-optimal, since these changes need to be manually reapplied each time the Pins regenerates the code; where did i go wrong?

2) after routing the needed pins in the Pins utility and configuring things like pull-ups, etc., i was expecting the tool to provide an initialization function for said pins somewhere: Eclipse glitching out and not correctly displaying code as active based on #define directives made me search far and wide to locate all the init functions i needed: is this mentioned anywhere in the documentation?

3) i did not understand what difference it makes whether i use the Port driver provided by the MCAL/Autosar layer vs. the Siul2_Port driver.

4) to make my ISR work, i have inserted my own PIT0 callback in the vector table, and selectively enabled the matching IRQ: while it works, i have the feeling this is not the "intended" way; did i do things the right way, or am i missing out on some other Pins functionality?

I am attaching my test project, feel free to sift through and provide feedback, at such an early stage it's gonna be crucial

Re: S32K3 PIT timer callback

Senlent — Wed, 20 Dec 2023 03:07:51 GMT

Hi@Luca_Ferioli

1.for your question 1 and 4

inCtrl_Ip module used to manage interrupt

2.There is no such document, but you can refer to the routines related to the SIUL module provided below by the IDE.

3.RTD includes SDK(Drivers) and mcal. If there is no AUTOSAR requirement, you can use Drivers.

Re: S32K3 PIT timer callback

Luca_Ferioli — Wed, 20 Dec 2023 10:06:38 GMT

This clears up my doubts, thank you for your time @Senlent

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S32K3 PIT timer callback

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Re: S32K3 PIT timer callback