MPC5748G PIT interrupt problem

[yukunwu]

hello ,everyone:

      I have test the NXP-example about hello+pll+interrupt. It works well,PIT0 generates the interrupt in Core 0 and toggles the DS4 LED at every 1s.

      I'm trying to do it by myself and i created a project.

      1.enable the interrupt

      2.set clock

      3.Enable PIT module and Initialize PIT0

      4.In interrupt routines,DS4 = ~DS4;

   but it doesn't work...why?

   attachment is my project.

Best Regards

Yukun Wu

Original Attachment has been moved to: button.zip

[yukunwu]

Hi,Peter:

      yeah~That's the point,i forgot to define it.

      Now it works well.

      Thank your very much!!

Best Regards

Yukun Wu

[petervlna]

Hi,your example seems fine,

However I can't see where you set interrupt priority.

If your priority for interrupt source is 0, then no interrupt will happen.

Peter

[yukunwu]

Hello, Peter:

      Thanks for your apply.

      I set the interrupt priority at “pit.c”

      I think i found this problem . I didn't define PIT0 in "intc_SW_mode_isr_vectors_MPC5748G.c",It should be 226 ,and the dummy should point to PIT0_isr().

      Am i right？

Best Regards

Yukun Wu

[petervlna]

Yes, you have to place your ISR into ISR vector table if you want IVOR4 handler to jump to your ISR.
Peter