SPC570 IACKR - HighTec IDE - Interrupt

[david tomsa]

Hi guys,

i have the following problem.

I configure the interrupts as follow.

INTC.BCR.R = 0;
INTC.IACKR[0].R = (uint32_t)&VectorTable[0];
INTC.CPR[0].B.PRI = 0;
 
// enable interrupts
__asm__ volatile ("wrteei 1" : : : "memory");

After that, i configure one Etimer Channel with timer compare interrupt. The interrupt flag will set in etimer module, but the ISR will never be called.

If i change my configuration to the following, the interrupts will come:

INTC.BCR.R = 0;
INTC.IACKR[0].R = (uint32_t)&VectorTable[0];
 
(void)INTC.IACKR[0].R; // read back 
 
INTC.CPR[0].B.PRI = 0;
 
// enable interrupts
__asm__ volatile ("wrteei 1" : : : "memory");

I would be happy if someone could explain what I'm doing wrong, because I can't find anything about it in the reference manual.

best regards

david

[Erwan YVIN · Accepted solution]

Dear All ,

Sorry, difficult for me to support Hightec IDE on irq handler .

Could you give me the HW used ?

could you check in SPC5Studio 6.0 (spc574kxx_irq_component_rla) (cf below)?

there is a nice irq handler.

/**
 * @brief   IRQ module initialization.
 *
 * @api
 */
void irqInit(void) {
 
  irq_cfg_init();
  
  /* Method of accessing memory-mapped registers at fixed addresses does not 
     comply with MISRA C because it involves converting an integer to a 
	 pointer. */
  /*lint -e9033 */
  /* INTC initialization, software vector mode, 4 bytes vectors, starting
     at priority 0.*/
     
  INTC_BCR = 0;
 
  /* Configure IRQ for main core.*/
  INTC_CPR(MAIN_CORE)   = 0;
  INTC_IACKR(MAIN_CORE) = (uint32_t)_vectors;
 
#if defined(BOOT_CORE0) && (BOOT_CORE0 == 1)
  /* Configure IRQ for secondary core 0.*/
  INTC_CPR(0)   = 0;
  INTC_IACKR(0) = (uint32_t)_vectors;
#endif /* BOOT_CORE0 */
 
#if defined(BOOT_CORE1) && (BOOT_CORE1 == 1)
  /* Configure IRQ for secondary core 1.*/
  INTC_CPR(1)   = 0;
  INTC_IACKR(1) = (uint32_t)_vectors;
#endif /* BOOT_CORE1 */
 
#if defined(BOOT_CORE2) && (BOOT_CORE2 == 1)
  /* Configure IRQ for secondary core 2.*/
  INTC_CPR(2)   = 0;
  INTC_IACKR(2) = (uint32_t)_vectors;
#endif /* BOOT_CORE2 */
 
  /*lint +e9033 */
}

Best regards

Erwan