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Convert some ports to use xTaskIncrementTick() in place of vTaskIncrementTick().

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Move DSB instructions to before WFI instructions in line with ARM recommendations.
This commit is contained in:
Richard Barry 2013-06-06 15:46:40 +00:00
parent 4e9374ad90
commit 686d190798
27 changed files with 128 additions and 142 deletions
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12
FreeRTOS/Source/portable/IAR/ARM_CM3/port.c
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@ -250,11 +250,6 @@ void vPortExitCritical( void )
void xPortSysTickHandler( void )
{
/* If using preemption, also force a context switch. */
#if configUSE_PREEMPTION == 1
portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
#endif
/* Only reset the systick load register if configUSE_TICKLESS_IDLE is set to
1. If it is set to 0 tickless idle is not being used. If it is set to a
value other than 0 or 1 then a timer other than the SysTick is being used
@ -265,7 +260,10 @@ void xPortSysTickHandler( void )
( void ) portSET_INTERRUPT_MASK_FROM_ISR();
{
vTaskIncrementTick();
if( xTaskIncrementTick() != pdFALSE )
{
portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
}
}
portCLEAR_INTERRUPT_MASK_FROM_ISR( 0 );
}
@ -340,8 +338,8 @@ void xPortSysTickHandler( void )
configPRE_SLEEP_PROCESSING( xModifiableIdleTime );
if( xModifiableIdleTime > 0 )
{
__WFI();
__DSB();
__WFI();
__ISB();
}
configPOST_SLEEP_PROCESSING( xExpectedIdleTime );