topic how to enter LPIT0_Ch1_IRQHandler interrupt in S32K

how to enter LPIT0_Ch1_IRQHandler interrupt

jerryxie1 — Mon, 22 Jan 2018 01:54:28 GMT

I want to use LPIT0_Ch1, modify demo hello_interrupts,initial config is as follow, enable interrupt flag lpit_ch1,but can not enter LPIT0_Ch1_IRQHandler , how to enter LPIT0_Ch1_IRQHandler interrupt? TKS

Re: how to enter LPIT0_Ch1_IRQHandler interrupt

danielmartynek — Mon, 22 Jan 2018 08:52:45 GMT

Hi,

Did you enable the interrupt?

void NVIC_init_IRQs (void) {
  S32_NVIC->ICPR[1] = 1 << (49 % 32);  /* IRQ49-LPIT0 ch1: clr any pending IRQ*/
  S32_NVIC->ISER[1] = 1 << (49 % 32);  /* IRQ49-LPIT0 ch1: enable IRQ */
  S32_NVIC->IP[49] = 0xA0;             /* IRQ49-LPIT0 ch1: priority 10 of 0-15*/
}‍‍‍‍‍

Also, it needs to be enabled in LPIT0_MIER register

LPIT0->MIER = 0x00000003;‍‍

Regards,

Daniel

Re: how to enter LPIT0_Ch1_IRQHandler interrupt

jerryxie1 — Tue, 23 Jan 2018 02:14:46 GMT

interrupt NVIC has enable, interrupt falg is set, LPIT0->MIER = 0x00000003,can not enter LPIT0_Ch1_IRQHandler, but can enter interrupt LPIT0_Ch0_IRQHandler!,puzzled...

Re: how to enter LPIT0_Ch1_IRQHandler interrupt

danielmartynek — Tue, 23 Jan 2018 17:16:28 GMT

Hi,

I don't see any reason for this.

Did you really enable NVIC interrupts 48 and 49?

Regards,

Daniel

Re: how to enter LPIT0_Ch1_IRQHandler interrupt

yrson7 — Wed, 06 Mar 2019 07:58:12 GMT

Dear . Daniel

Thank you your advice.
I am OK, timer both LPIT0_Ch1 and LPIT0_Ch1.