how can l set interrupt priority on s32ds

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how can l set interrupt priority on s32ds

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jinshuaixu
Contributor V

           below is tow interrupt code ,if I want to set systick interrupt prioyity higher than wdog, who can tell me below code is right or wrong.?l an a new user ,firstly use S32K144 and S32DS. 

           please give me code or example code,thank you .

/* Install IRQ handlers for WDOG and SysTick interrupts */
INT_SYS_InstallHandler(WDOG_EWM_IRQn, WDOG_ISR, (isr_t *)0);
INT_SYS_InstallHandler(SysTick_IRQn, SysTick_Handler, (isr_t *)0);


INT_SYS_SetPriority(WDOG_EWM_IRQn,0);
INT_SYS_SetPriority(SysTick_IRQn,1);

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danielmartynek
NXP TechSupport
NXP TechSupport

Hi,

The lower priority number, the higher priority level.

So in your code, the WDOG interrupt has higher priority then SysTick.

The code should be:

void WDOG_IRQ_handler(void) {   
// do something
}

void SysTick_IRQ_Handler(void){   
// do something
}

INT_SYS_InstallHandler(WDOG_EWM_IRQn, WDOG_IRQ_handler, (isr_t *)0);
INT_SYS_InstallHandler(SysTick_IRQn, SysTick_IRQ_Handler, (isr_t *)0);

INT_SYS_SetPriority(WDOG_EWM_IRQn, 1);
INT_SYS_SetPriority(SysTick_IRQn, 0);

INT_SYS_EnableIRQ(WDOG_EWM_IRQn);
INT_SYS_EnableIRQ(SysTick_IRQn);

Regards,

Daniel

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2,649 Views
danielmartynek
NXP TechSupport
NXP TechSupport

Hi,

The lower priority number, the higher priority level.

So in your code, the WDOG interrupt has higher priority then SysTick.

The code should be:

void WDOG_IRQ_handler(void) {   
// do something
}

void SysTick_IRQ_Handler(void){   
// do something
}

INT_SYS_InstallHandler(WDOG_EWM_IRQn, WDOG_IRQ_handler, (isr_t *)0);
INT_SYS_InstallHandler(SysTick_IRQn, SysTick_IRQ_Handler, (isr_t *)0);

INT_SYS_SetPriority(WDOG_EWM_IRQn, 1);
INT_SYS_SetPriority(SysTick_IRQn, 0);

INT_SYS_EnableIRQ(WDOG_EWM_IRQn);
INT_SYS_EnableIRQ(SysTick_IRQn);

Regards,

Daniel

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