void vPortClearInterruptMask( uint32_t ulNewMaskValue )
{
if( ulNewMaskValue == pdFALSE )
{
portCLEAR_INTERRUPT_MASK();
}
}
void vPortClearInterruptMask( unsigned long ulNewMaskValue )
{
if( ulNewMaskValue == pdFALSE )
{
portCLEAR_INTERRUPT_MASK();
}
}
void vPortTickHandler(void) {
#if configUSE_TICKLESS_IDLE == 1
TICK_INTERRUPT_FLAG_SET();
#endif
portSET_INTERRUPT_MASK(); /* disable interrupts */
if (xTaskIncrementTick()!=pdFALSE) { /* increment tick count */
taskYIELD();
}
portCLEAR_INTERRUPT_MASK(); /* enable interrupts again */
}
void vPortExitCritical( void )
{
if( ulCriticalNesting > portNO_CRITICAL_NESTING )
{
/* Decrement the nesting count as the critical section is being
exited. */
ulCriticalNesting--;
/* If the nesting level has reached zero then all interrupt
priorities must be re-enabled. */
if( ulCriticalNesting == portNO_CRITICAL_NESTING )
{
/* Critical nesting has reached zero so all interrupt priorities
should be unmasked. */
portCLEAR_INTERRUPT_MASK();
}
}
}
void vPortTickHandler(void) {
/* this is how we get here:
RTOSTICKLDD1_Interrupt:
push {r4, lr}
... RTOSTICKLDD1_OnCounterRestart
bl RTOSTICKLDD1_OnCounterRestart -> push {r4,lr}
pop {r4, lr} mov r4,r0
bl vPortTickHandler
pop {r4,pc}
*/
#if configUSE_TICKLESS_IDLE == 1
TICK_INTERRUPT_FLAG_SET();
#endif
portSET_INTERRUPT_MASK(); /* disable interrupts */
if (xTaskIncrementTick()!=pdFALSE) { /* increment tick count */
taskYIELD();
}
portCLEAR_INTERRUPT_MASK(); /* enable interrupts again */
}
void FreeRTOS_Tick_Handler( void )
{
/* Set interrupt mask before altering scheduler structures. The tick
handler runs at the lowest priority, so interrupts cannot already be masked,
so there is no need to save and restore the current mask value. */
__disable_irq();
portICCPMR_PRIORITY_MASK_REGISTER = ( configMAX_API_CALL_INTERRUPT_PRIORITY << portPRIORITY_SHIFT );
__asm( "DSB \n"
"ISB \n" );
__enable_irq();
/* Increment the RTOS tick. */
if( xTaskIncrementTick() != pdFALSE )
{
ulPortYieldRequired = pdTRUE;
}
/* Ensure all interrupt priorities are active again. */
portCLEAR_INTERRUPT_MASK();
}
