BaseType_t xPortSysTickHandler( void )
{
BaseType_t ret;
portbenchmarkIntLatency();
traceISR_ENTER(SYSTICK_INTR_ID);
ret = xTaskIncrementTick();
if( ret != pdFALSE )
{
portYIELD_FROM_ISR();
} else {
traceISR_EXIT();
}
return ret;
}
void xPortSysTickHandler( void )
{
/* The SysTick runs at the lowest interrupt priority, so when this interrupt
executes all interrupts must be unmasked. There is therefore no need to
save and then restore the interrupt mask value as its value is already
known. */
( void ) portSET_INTERRUPT_MASK_FROM_ISR();
traceISR_ENTER();
{
/* Increment the RTOS tick. */
if( xTaskIncrementTick() != pdFALSE )
{
traceISR_EXIT_TO_SCHEDULER();
/* A context switch is required. Context switching is performed in
the PendSV interrupt. Pend the PendSV interrupt. */
portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
}
else
{
traceISR_EXIT();
}
}
portCLEAR_INTERRUPT_MASK_FROM_ISR( 0 );
}
