Posted on March 01, 2018 at 07:23I feel like I am close. Setting the channel 2 PIT priority to 0 in INTC_0 does prevent core0 from triggering an interrupt. However, setting a priority for INTC_1 hasn't worked for me yet; core1 never runs the PIT CH2 handler. I am guessing that somewhere in the initialization, whether components or in timers, I don't fully have the interrupter for INTC_1 enabled.
<c>
#define INTC_1_BASE 0x8FF48000U
#define INTC_1_PSR(n) (*((volatile uint8_t *)(INTC_1_BASE + 0x40U + ((uint16_t)(n) * sizeof (uint8_t)))))
int main(void)
{
runCore1();
osalThreadDelaySeconds(2);
// initialize components
componentsInit();
irqIsrEnable();
//Disable the PIT2 channel for INTC_0 by setting priority to zero (This works, prevents core0 from running CH2)
INTC_PSR(SPC_PIT_CH2_INT_NUMBER) = INTC_PSR_ENABLE(0x00, 0x00);
//Set the PIT2 channel for INTC_1 by setting priority to the configured setting
//(This does not work, cannot get t_80_PIT handler to be called)
INTC_1_PSR(SPC_PIT_CH2_INT_NUMBER) = INTC_PSR_ENABLE(0xC0, 0x04);
//^^^ Note: I found in another reference manual that 0xC0 is for choosing the core, but I think these are ignored (shot in dark)
pit_lld_start(&PITD, pit_config);
pit_lld_channel_start(&PITD, 1U);
pit_lld_channel_start(&PITD, 2U);
// main loop
for ( ; ; ) { }
}
int main_core1(void)
{
osalThreadDelaySeconds(2);
irqIsrEnable();
// main loop
for ( ; ; ) { }
return 0;
}
// t_200_PIT is a 200kHz periodic timer called by Periodic Interrupt Timer channel 1
void t_200_PIT(void)
{
pal_lld_togglepad(PORT_D, LED_RED);
}
// t_190_PIT is a 190kHz periodic timer called by Periodic Interrupt Timer channel 2
void t_190_PIT(void)
{
pal_lld_togglepad(PORT_D, LED_GREEN);
}
</c>
