mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-20 10:08:33 -04:00
Style: uncrusitfy
This commit is contained in:
Alfred Gedeon
alfred gedeon
parent
a5dbc2b1de
commit
718178c68a
406 changed files with 108795 additions and 106323 deletions
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@ -25,8 +25,8 @@
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*/
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the ARM CM0 port.
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*----------------------------------------------------------*/
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* Implementation of functions defined in portable.h for the ARM CM0 port.
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*----------------------------------------------------------*/
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/* IAR includes. */
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#include "intrinsics.h"
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@ -36,58 +36,58 @@
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#include "task.h"
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/* Constants required to manipulate the NVIC. */
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#define portNVIC_SYSTICK_CTRL_REG ( * ( ( volatile uint32_t * ) 0xe000e010 ) )
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#define portNVIC_SYSTICK_LOAD_REG ( * ( ( volatile uint32_t * ) 0xe000e014 ) )
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#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( * ( ( volatile uint32_t * ) 0xe000e018 ) )
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#define portNVIC_INT_CTRL_REG ( * ( ( volatile uint32_t * ) 0xe000ed04 ) )
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#define portNVIC_SYSPRI2_REG ( * ( ( volatile uint32_t *) 0xe000ed20 ) )
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#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
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#define portNVIC_SYSTICK_INT_BIT ( 1UL << 1UL )
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#define portNVIC_SYSTICK_ENABLE_BIT ( 1UL << 0UL )
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#define portNVIC_SYSTICK_COUNT_FLAG_BIT ( 1UL << 16UL )
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#define portMIN_INTERRUPT_PRIORITY ( 255UL )
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#define portNVIC_PENDSV_PRI ( portMIN_INTERRUPT_PRIORITY << 16UL )
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#define portNVIC_SYSTICK_PRI ( portMIN_INTERRUPT_PRIORITY << 24UL )
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#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
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#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
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#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
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#define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
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#define portNVIC_SYSPRI2_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
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#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
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#define portNVIC_SYSTICK_INT_BIT ( 1UL << 1UL )
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#define portNVIC_SYSTICK_ENABLE_BIT ( 1UL << 0UL )
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#define portNVIC_SYSTICK_COUNT_FLAG_BIT ( 1UL << 16UL )
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#define portMIN_INTERRUPT_PRIORITY ( 255UL )
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#define portNVIC_PENDSV_PRI ( portMIN_INTERRUPT_PRIORITY << 16UL )
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#define portNVIC_SYSTICK_PRI ( portMIN_INTERRUPT_PRIORITY << 24UL )
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/* Constants required to set up the initial stack. */
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#define portINITIAL_XPSR ( 0x01000000 )
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#define portINITIAL_XPSR ( 0x01000000 )
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/* For backward compatibility, ensure configKERNEL_INTERRUPT_PRIORITY is
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defined. The value 255 should also ensure backward compatibility.
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FreeRTOS.org versions prior to V4.3.0 did not include this definition. */
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* defined. The value 255 should also ensure backward compatibility.
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* FreeRTOS.org versions prior to V4.3.0 did not include this definition. */
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#ifndef configKERNEL_INTERRUPT_PRIORITY
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#define configKERNEL_INTERRUPT_PRIORITY 0
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#define configKERNEL_INTERRUPT_PRIORITY 0
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#endif
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/* Each task maintains its own interrupt status in the critical nesting
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variable. */
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static UBaseType_t uxCriticalNesting = 0xaaaaaaaa;
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* variable. */
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static UBaseType_t uxCriticalNesting = 0xaaaaaaaa;
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/* The systick is a 24-bit counter. */
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#define portMAX_24_BIT_NUMBER ( 0xffffffUL )
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#define portMAX_24_BIT_NUMBER ( 0xffffffUL )
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/* A fiddle factor to estimate the number of SysTick counts that would have
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occurred while the SysTick counter is stopped during tickless idle
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calculations. */
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* occurred while the SysTick counter is stopped during tickless idle
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* calculations. */
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#ifndef portMISSED_COUNTS_FACTOR
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#define portMISSED_COUNTS_FACTOR ( 45UL )
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#define portMISSED_COUNTS_FACTOR ( 45UL )
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#endif
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/* The number of SysTick increments that make up one tick period. */
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#if( configUSE_TICKLESS_IDLE == 1 )
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static uint32_t ulTimerCountsForOneTick = 0;
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#if ( configUSE_TICKLESS_IDLE == 1 )
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static uint32_t ulTimerCountsForOneTick = 0;
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#endif /* configUSE_TICKLESS_IDLE */
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/* The maximum number of tick periods that can be suppressed is limited by the
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24 bit resolution of the SysTick timer. */
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#if( configUSE_TICKLESS_IDLE == 1 )
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static uint32_t xMaximumPossibleSuppressedTicks = 0;
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* 24 bit resolution of the SysTick timer. */
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#if ( configUSE_TICKLESS_IDLE == 1 )
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static uint32_t xMaximumPossibleSuppressedTicks = 0;
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#endif /* configUSE_TICKLESS_IDLE */
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/* Compensate for the CPU cycles that pass while the SysTick is stopped (low
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power functionality only. */
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#if( configUSE_TICKLESS_IDLE == 1 )
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static uint32_t ulStoppedTimerCompensation = 0;
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* power functionality only. */
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#if ( configUSE_TICKLESS_IDLE == 1 )
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static uint32_t ulStoppedTimerCompensation = 0;
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#endif /* configUSE_TICKLESS_IDLE */
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/*
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@ -118,35 +118,40 @@ static void prvTaskExitError( void );
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/*
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* See header file for description.
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*/
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StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
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StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
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TaskFunction_t pxCode,
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void * pvParameters )
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{
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/* Simulate the stack frame as it would be created by a context switch
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interrupt. */
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pxTopOfStack--; /* Offset added to account for the way the MCU uses the stack on entry/exit of interrupts. */
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*pxTopOfStack = portINITIAL_XPSR; /* xPSR */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pxCode; /* PC */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) prvTaskExitError; /* LR */
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pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
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*pxTopOfStack = ( StackType_t ) pvParameters; /* R0 */
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pxTopOfStack -= 8; /* R11..R4. */
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/* Simulate the stack frame as it would be created by a context switch
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* interrupt. */
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pxTopOfStack--; /* Offset added to account for the way the MCU uses the stack on entry/exit of interrupts. */
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*pxTopOfStack = portINITIAL_XPSR; /* xPSR */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pxCode; /* PC */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) prvTaskExitError; /* LR */
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pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
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*pxTopOfStack = ( StackType_t ) pvParameters; /* R0 */
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pxTopOfStack -= 8; /* R11..R4. */
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return pxTopOfStack;
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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static void prvTaskExitError( void )
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{
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/* A function that implements a task must not exit or attempt to return to
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its caller as there is nothing to return to. If a task wants to exit it
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should instead call vTaskDelete( NULL ).
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/* A function that implements a task must not exit or attempt to return to
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* its caller as there is nothing to return to. If a task wants to exit it
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* should instead call vTaskDelete( NULL ).
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*
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* Artificially force an assert() to be triggered if configASSERT() is
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* defined, then stop here so application writers can catch the error. */
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configASSERT( uxCriticalNesting == ~0UL );
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portDISABLE_INTERRUPTS();
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Artificially force an assert() to be triggered if configASSERT() is
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defined, then stop here so application writers can catch the error. */
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configASSERT( uxCriticalNesting == ~0UL );
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portDISABLE_INTERRUPTS();
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for( ;; );
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for( ; ; )
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{
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}
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}
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/*-----------------------------------------------------------*/
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@ -155,79 +160,80 @@ static void prvTaskExitError( void )
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*/
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BaseType_t xPortStartScheduler( void )
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{
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/* Make PendSV and SysTick the lowest priority interrupts. */
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portNVIC_SYSPRI2_REG |= portNVIC_PENDSV_PRI;
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portNVIC_SYSPRI2_REG |= portNVIC_SYSTICK_PRI;
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/* Make PendSV and SysTick the lowest priority interrupts. */
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portNVIC_SYSPRI2_REG |= portNVIC_PENDSV_PRI;
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portNVIC_SYSPRI2_REG |= portNVIC_SYSTICK_PRI;
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/* Start the timer that generates the tick ISR. Interrupts are disabled
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here already. */
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vPortSetupTimerInterrupt();
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/* Start the timer that generates the tick ISR. Interrupts are disabled
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* here already. */
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vPortSetupTimerInterrupt();
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/* Initialise the critical nesting count ready for the first task. */
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uxCriticalNesting = 0;
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/* Initialise the critical nesting count ready for the first task. */
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uxCriticalNesting = 0;
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/* Start the first task. */
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vPortStartFirstTask();
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/* Start the first task. */
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vPortStartFirstTask();
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/* Should not get here! */
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return 0;
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/* Should not get here! */
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return 0;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* Not implemented in ports where there is nothing to return to.
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Artificially force an assert. */
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configASSERT( uxCriticalNesting == 1000UL );
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/* Not implemented in ports where there is nothing to return to.
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* Artificially force an assert. */
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configASSERT( uxCriticalNesting == 1000UL );
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}
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/*-----------------------------------------------------------*/
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void vPortYield( void )
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{
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/* Set a PendSV to request a context switch. */
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portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET;
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/* Set a PendSV to request a context switch. */
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portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET;
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/* Barriers are normally not required but do ensure the code is completely
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within the specified behaviour for the architecture. */
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__DSB();
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__ISB();
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/* Barriers are normally not required but do ensure the code is completely
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* within the specified behaviour for the architecture. */
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__DSB();
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__ISB();
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}
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/*-----------------------------------------------------------*/
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void vPortEnterCritical( void )
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{
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portDISABLE_INTERRUPTS();
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uxCriticalNesting++;
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__DSB();
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__ISB();
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portDISABLE_INTERRUPTS();
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uxCriticalNesting++;
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__DSB();
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__ISB();
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}
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/*-----------------------------------------------------------*/
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void vPortExitCritical( void )
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{
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configASSERT( uxCriticalNesting );
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uxCriticalNesting--;
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if( uxCriticalNesting == 0 )
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{
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portENABLE_INTERRUPTS();
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}
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configASSERT( uxCriticalNesting );
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uxCriticalNesting--;
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if( uxCriticalNesting == 0 )
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{
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portENABLE_INTERRUPTS();
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}
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}
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/*-----------------------------------------------------------*/
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void xPortSysTickHandler( void )
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{
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uint32_t ulPreviousMask;
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uint32_t ulPreviousMask;
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ulPreviousMask = portSET_INTERRUPT_MASK_FROM_ISR();
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{
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/* Increment the RTOS tick. */
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if( xTaskIncrementTick() != pdFALSE )
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{
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/* Pend a context switch. */
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portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET;
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}
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}
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portCLEAR_INTERRUPT_MASK_FROM_ISR( ulPreviousMask );
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ulPreviousMask = portSET_INTERRUPT_MASK_FROM_ISR();
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{
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/* Increment the RTOS tick. */
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if( xTaskIncrementTick() != pdFALSE )
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{
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/* Pend a context switch. */
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portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET;
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}
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}
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portCLEAR_INTERRUPT_MASK_FROM_ISR( ulPreviousMask );
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}
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/*-----------------------------------------------------------*/
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@ -237,187 +243,190 @@ uint32_t ulPreviousMask;
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*/
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void vPortSetupTimerInterrupt( void )
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{
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/* Calculate the constants required to configure the tick interrupt. */
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#if( configUSE_TICKLESS_IDLE == 1 )
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{
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ulTimerCountsForOneTick = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ );
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xMaximumPossibleSuppressedTicks = portMAX_24_BIT_NUMBER / ulTimerCountsForOneTick;
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ulStoppedTimerCompensation = portMISSED_COUNTS_FACTOR;
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}
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#endif /* configUSE_TICKLESS_IDLE */
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/* Calculate the constants required to configure the tick interrupt. */
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#if ( configUSE_TICKLESS_IDLE == 1 )
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{
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ulTimerCountsForOneTick = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ );
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xMaximumPossibleSuppressedTicks = portMAX_24_BIT_NUMBER / ulTimerCountsForOneTick;
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ulStoppedTimerCompensation = portMISSED_COUNTS_FACTOR;
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}
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#endif /* configUSE_TICKLESS_IDLE */
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/* Stop and reset the SysTick. */
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portNVIC_SYSTICK_CTRL_REG = 0UL;
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portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
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/* Stop and reset the SysTick. */
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portNVIC_SYSTICK_CTRL_REG = 0UL;
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portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
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/* Configure SysTick to interrupt at the requested rate. */
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portNVIC_SYSTICK_LOAD_REG = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;
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portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
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/* Configure SysTick to interrupt at the requested rate. */
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portNVIC_SYSTICK_LOAD_REG = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;
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portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
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}
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/*-----------------------------------------------------------*/
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#if( configUSE_TICKLESS_IDLE == 1 )
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#if ( configUSE_TICKLESS_IDLE == 1 )
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__weak void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )
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{
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uint32_t ulReloadValue, ulCompleteTickPeriods, ulCompletedSysTickDecrements;
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TickType_t xModifiableIdleTime;
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__weak void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )
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{
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uint32_t ulReloadValue, ulCompleteTickPeriods, ulCompletedSysTickDecrements;
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TickType_t xModifiableIdleTime;
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/* Make sure the SysTick reload value does not overflow the counter. */
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if( xExpectedIdleTime > xMaximumPossibleSuppressedTicks )
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{
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xExpectedIdleTime = xMaximumPossibleSuppressedTicks;
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}
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/* Make sure the SysTick reload value does not overflow the counter. */
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if( xExpectedIdleTime > xMaximumPossibleSuppressedTicks )
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{
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xExpectedIdleTime = xMaximumPossibleSuppressedTicks;
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}
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/* Stop the SysTick momentarily. The time the SysTick is stopped for
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is accounted for as best it can be, but using the tickless mode will
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inevitably result in some tiny drift of the time maintained by the
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kernel with respect to calendar time. */
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portNVIC_SYSTICK_CTRL_REG &= ~portNVIC_SYSTICK_ENABLE_BIT;
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/* Stop the SysTick momentarily. The time the SysTick is stopped for
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* is accounted for as best it can be, but using the tickless mode will
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* inevitably result in some tiny drift of the time maintained by the
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* kernel with respect to calendar time. */
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portNVIC_SYSTICK_CTRL_REG &= ~portNVIC_SYSTICK_ENABLE_BIT;
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/* Calculate the reload value required to wait xExpectedIdleTime
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tick periods. -1 is used because this code will execute part way
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through one of the tick periods. */
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ulReloadValue = portNVIC_SYSTICK_CURRENT_VALUE_REG + ( ulTimerCountsForOneTick * ( xExpectedIdleTime - 1UL ) );
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if( ulReloadValue > ulStoppedTimerCompensation )
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{
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ulReloadValue -= ulStoppedTimerCompensation;
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}
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/* Calculate the reload value required to wait xExpectedIdleTime
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* tick periods. -1 is used because this code will execute part way
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* through one of the tick periods. */
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ulReloadValue = portNVIC_SYSTICK_CURRENT_VALUE_REG + ( ulTimerCountsForOneTick * ( xExpectedIdleTime - 1UL ) );
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/* Enter a critical section but don't use the taskENTER_CRITICAL()
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method as that will mask interrupts that should exit sleep mode. */
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__disable_interrupt();
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__DSB();
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__ISB();
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if( ulReloadValue > ulStoppedTimerCompensation )
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{
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ulReloadValue -= ulStoppedTimerCompensation;
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}
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/* If a context switch is pending or a task is waiting for the scheduler
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to be unsuspended then abandon the low power entry. */
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if( eTaskConfirmSleepModeStatus() == eAbortSleep )
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{
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/* Restart from whatever is left in the count register to complete
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this tick period. */
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portNVIC_SYSTICK_LOAD_REG = portNVIC_SYSTICK_CURRENT_VALUE_REG;
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/* Enter a critical section but don't use the taskENTER_CRITICAL()
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* method as that will mask interrupts that should exit sleep mode. */
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__disable_interrupt();
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__DSB();
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__ISB();
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/* Restart SysTick. */
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portNVIC_SYSTICK_CTRL_REG |= portNVIC_SYSTICK_ENABLE_BIT;
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/* If a context switch is pending or a task is waiting for the scheduler
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||||
* to be unsuspended then abandon the low power entry. */
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if( eTaskConfirmSleepModeStatus() == eAbortSleep )
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{
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/* Restart from whatever is left in the count register to complete
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* this tick period. */
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portNVIC_SYSTICK_LOAD_REG = portNVIC_SYSTICK_CURRENT_VALUE_REG;
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/* Reset the reload register to the value required for normal tick
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periods. */
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portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
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/* Restart SysTick. */
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portNVIC_SYSTICK_CTRL_REG |= portNVIC_SYSTICK_ENABLE_BIT;
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/* Re-enable interrupts - see comments above __disable_interrupt()
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call above. */
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__enable_interrupt();
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Set the new reload value. */
|
||||
portNVIC_SYSTICK_LOAD_REG = ulReloadValue;
|
||||
/* Reset the reload register to the value required for normal tick
|
||||
* periods. */
|
||||
portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
|
||||
|
||||
/* Clear the SysTick count flag and set the count value back to
|
||||
zero. */
|
||||
portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
|
||||
/* Re-enable interrupts - see comments above __disable_interrupt()
|
||||
* call above. */
|
||||
__enable_interrupt();
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Set the new reload value. */
|
||||
portNVIC_SYSTICK_LOAD_REG = ulReloadValue;
|
||||
|
||||
/* Restart SysTick. */
|
||||
portNVIC_SYSTICK_CTRL_REG |= portNVIC_SYSTICK_ENABLE_BIT;
|
||||
/* Clear the SysTick count flag and set the count value back to
|
||||
* zero. */
|
||||
portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
|
||||
|
||||
/* Sleep until something happens. configPRE_SLEEP_PROCESSING() can
|
||||
set its parameter to 0 to indicate that its implementation contains
|
||||
its own wait for interrupt or wait for event instruction, and so wfi
|
||||
should not be executed again. However, the original expected idle
|
||||
time variable must remain unmodified, so a copy is taken. */
|
||||
xModifiableIdleTime = xExpectedIdleTime;
|
||||
configPRE_SLEEP_PROCESSING( xModifiableIdleTime );
|
||||
if( xModifiableIdleTime > 0 )
|
||||
{
|
||||
__DSB();
|
||||
__WFI();
|
||||
__ISB();
|
||||
}
|
||||
configPOST_SLEEP_PROCESSING( xExpectedIdleTime );
|
||||
/* Restart SysTick. */
|
||||
portNVIC_SYSTICK_CTRL_REG |= portNVIC_SYSTICK_ENABLE_BIT;
|
||||
|
||||
/* Re-enable interrupts to allow the interrupt that brought the MCU
|
||||
out of sleep mode to execute immediately. see comments above
|
||||
__disable_interrupt() call above. */
|
||||
__enable_interrupt();
|
||||
__DSB();
|
||||
__ISB();
|
||||
/* Sleep until something happens. configPRE_SLEEP_PROCESSING() can
|
||||
* set its parameter to 0 to indicate that its implementation contains
|
||||
* its own wait for interrupt or wait for event instruction, and so wfi
|
||||
* should not be executed again. However, the original expected idle
|
||||
* time variable must remain unmodified, so a copy is taken. */
|
||||
xModifiableIdleTime = xExpectedIdleTime;
|
||||
configPRE_SLEEP_PROCESSING( xModifiableIdleTime );
|
||||
|
||||
/* Disable interrupts again because the clock is about to be stopped
|
||||
and interrupts that execute while the clock is stopped will increase
|
||||
any slippage between the time maintained by the RTOS and calendar
|
||||
time. */
|
||||
__disable_interrupt();
|
||||
__DSB();
|
||||
__ISB();
|
||||
if( xModifiableIdleTime > 0 )
|
||||
{
|
||||
__DSB();
|
||||
__WFI();
|
||||
__ISB();
|
||||
}
|
||||
|
||||
/* Disable the SysTick clock without reading the
|
||||
portNVIC_SYSTICK_CTRL_REG register to ensure the
|
||||
portNVIC_SYSTICK_COUNT_FLAG_BIT is not cleared if it is set. Again,
|
||||
the time the SysTick is stopped for is accounted for as best it can
|
||||
be, but using the tickless mode will inevitably result in some tiny
|
||||
drift of the time maintained by the kernel with respect to calendar
|
||||
time*/
|
||||
portNVIC_SYSTICK_CTRL_REG = ( portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT );
|
||||
configPOST_SLEEP_PROCESSING( xExpectedIdleTime );
|
||||
|
||||
/* Determine if the SysTick clock has already counted to zero and
|
||||
been set back to the current reload value (the reload back being
|
||||
correct for the entire expected idle time) or if the SysTick is yet
|
||||
to count to zero (in which case an interrupt other than the SysTick
|
||||
must have brought the system out of sleep mode). */
|
||||
if( ( portNVIC_SYSTICK_CTRL_REG & portNVIC_SYSTICK_COUNT_FLAG_BIT ) != 0 )
|
||||
{
|
||||
uint32_t ulCalculatedLoadValue;
|
||||
/* Re-enable interrupts to allow the interrupt that brought the MCU
|
||||
* out of sleep mode to execute immediately. see comments above
|
||||
* __disable_interrupt() call above. */
|
||||
__enable_interrupt();
|
||||
__DSB();
|
||||
__ISB();
|
||||
|
||||
/* The tick interrupt is already pending, and the SysTick count
|
||||
reloaded with ulReloadValue. Reset the
|
||||
portNVIC_SYSTICK_LOAD_REG with whatever remains of this tick
|
||||
period. */
|
||||
ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL ) - ( ulReloadValue - portNVIC_SYSTICK_CURRENT_VALUE_REG );
|
||||
/* Disable interrupts again because the clock is about to be stopped
|
||||
* and interrupts that execute while the clock is stopped will increase
|
||||
* any slippage between the time maintained by the RTOS and calendar
|
||||
* time. */
|
||||
__disable_interrupt();
|
||||
__DSB();
|
||||
__ISB();
|
||||
|
||||
/* Don't allow a tiny value, or values that have somehow
|
||||
underflowed because the post sleep hook did something
|
||||
that took too long. */
|
||||
if( ( ulCalculatedLoadValue < ulStoppedTimerCompensation ) || ( ulCalculatedLoadValue > ulTimerCountsForOneTick ) )
|
||||
{
|
||||
ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL );
|
||||
}
|
||||
/* Disable the SysTick clock without reading the
|
||||
* portNVIC_SYSTICK_CTRL_REG register to ensure the
|
||||
* portNVIC_SYSTICK_COUNT_FLAG_BIT is not cleared if it is set. Again,
|
||||
* the time the SysTick is stopped for is accounted for as best it can
|
||||
* be, but using the tickless mode will inevitably result in some tiny
|
||||
* drift of the time maintained by the kernel with respect to calendar
|
||||
* time*/
|
||||
portNVIC_SYSTICK_CTRL_REG = ( portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT );
|
||||
|
||||
portNVIC_SYSTICK_LOAD_REG = ulCalculatedLoadValue;
|
||||
/* Determine if the SysTick clock has already counted to zero and
|
||||
* been set back to the current reload value (the reload back being
|
||||
* correct for the entire expected idle time) or if the SysTick is yet
|
||||
* to count to zero (in which case an interrupt other than the SysTick
|
||||
* must have brought the system out of sleep mode). */
|
||||
if( ( portNVIC_SYSTICK_CTRL_REG & portNVIC_SYSTICK_COUNT_FLAG_BIT ) != 0 )
|
||||
{
|
||||
uint32_t ulCalculatedLoadValue;
|
||||
|
||||
/* As the pending tick will be processed as soon as this
|
||||
function exits, the tick value maintained by the tick is stepped
|
||||
forward by one less than the time spent waiting. */
|
||||
ulCompleteTickPeriods = xExpectedIdleTime - 1UL;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Something other than the tick interrupt ended the sleep.
|
||||
Work out how long the sleep lasted rounded to complete tick
|
||||
periods (not the ulReload value which accounted for part
|
||||
ticks). */
|
||||
ulCompletedSysTickDecrements = ( xExpectedIdleTime * ulTimerCountsForOneTick ) - portNVIC_SYSTICK_CURRENT_VALUE_REG ;
|
||||
/* The tick interrupt is already pending, and the SysTick count
|
||||
* reloaded with ulReloadValue. Reset the
|
||||
* portNVIC_SYSTICK_LOAD_REG with whatever remains of this tick
|
||||
* period. */
|
||||
ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL ) - ( ulReloadValue - portNVIC_SYSTICK_CURRENT_VALUE_REG );
|
||||
|
||||
/* How many complete tick periods passed while the processor
|
||||
was waiting? */
|
||||
ulCompleteTickPeriods = ulCompletedSysTickDecrements / ulTimerCountsForOneTick;
|
||||
/* Don't allow a tiny value, or values that have somehow
|
||||
* underflowed because the post sleep hook did something
|
||||
* that took too long. */
|
||||
if( ( ulCalculatedLoadValue < ulStoppedTimerCompensation ) || ( ulCalculatedLoadValue > ulTimerCountsForOneTick ) )
|
||||
{
|
||||
ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL );
|
||||
}
|
||||
|
||||
/* The reload value is set to whatever fraction of a single tick
|
||||
period remains. */
|
||||
portNVIC_SYSTICK_LOAD_REG = ( ( ulCompleteTickPeriods + 1UL ) * ulTimerCountsForOneTick ) - ulCompletedSysTickDecrements;
|
||||
}
|
||||
portNVIC_SYSTICK_LOAD_REG = ulCalculatedLoadValue;
|
||||
|
||||
/* Restart SysTick so it runs from portNVIC_SYSTICK_LOAD_REG
|
||||
again, then set portNVIC_SYSTICK_LOAD_REG back to its standard
|
||||
value. */
|
||||
portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
|
||||
portNVIC_SYSTICK_CTRL_REG |= portNVIC_SYSTICK_ENABLE_BIT;
|
||||
vTaskStepTick( ulCompleteTickPeriods );
|
||||
portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
|
||||
/* As the pending tick will be processed as soon as this
|
||||
* function exits, the tick value maintained by the tick is stepped
|
||||
* forward by one less than the time spent waiting. */
|
||||
ulCompleteTickPeriods = xExpectedIdleTime - 1UL;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Something other than the tick interrupt ended the sleep.
|
||||
* Work out how long the sleep lasted rounded to complete tick
|
||||
* periods (not the ulReload value which accounted for part
|
||||
* ticks). */
|
||||
ulCompletedSysTickDecrements = ( xExpectedIdleTime * ulTimerCountsForOneTick ) - portNVIC_SYSTICK_CURRENT_VALUE_REG;
|
||||
|
||||
/* Exit with interrpts enabled. */
|
||||
__enable_interrupt();
|
||||
}
|
||||
}
|
||||
/* How many complete tick periods passed while the processor
|
||||
* was waiting? */
|
||||
ulCompleteTickPeriods = ulCompletedSysTickDecrements / ulTimerCountsForOneTick;
|
||||
|
||||
/* The reload value is set to whatever fraction of a single tick
|
||||
* period remains. */
|
||||
portNVIC_SYSTICK_LOAD_REG = ( ( ulCompleteTickPeriods + 1UL ) * ulTimerCountsForOneTick ) - ulCompletedSysTickDecrements;
|
||||
}
|
||||
|
||||
/* Restart SysTick so it runs from portNVIC_SYSTICK_LOAD_REG
|
||||
* again, then set portNVIC_SYSTICK_LOAD_REG back to its standard
|
||||
* value. */
|
||||
portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
|
||||
portNVIC_SYSTICK_CTRL_REG |= portNVIC_SYSTICK_ENABLE_BIT;
|
||||
vTaskStepTick( ulCompleteTickPeriods );
|
||||
portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
|
||||
|
||||
/* Exit with interrpts enabled. */
|
||||
__enable_interrupt();
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* configUSE_TICKLESS_IDLE */
|
||||
|
|
|
|||
|
|
@ -26,11 +26,11 @@
|
|||
|
||||
|
||||
#ifndef PORTMACRO_H
|
||||
#define PORTMACRO_H
|
||||
#define PORTMACRO_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*-----------------------------------------------------------
|
||||
* Port specific definitions.
|
||||
|
|
@ -43,86 +43,85 @@ extern "C" {
|
|||
*/
|
||||
|
||||
/* Type definitions. */
|
||||
#define portCHAR char
|
||||
#define portFLOAT float
|
||||
#define portDOUBLE double
|
||||
#define portLONG long
|
||||
#define portSHORT short
|
||||
#define portSTACK_TYPE uint32_t
|
||||
#define portBASE_TYPE long
|
||||
#define portCHAR char
|
||||
#define portFLOAT float
|
||||
#define portDOUBLE double
|
||||
#define portLONG long
|
||||
#define portSHORT short
|
||||
#define portSTACK_TYPE uint32_t
|
||||
#define portBASE_TYPE long
|
||||
|
||||
typedef portSTACK_TYPE StackType_t;
|
||||
typedef long BaseType_t;
|
||||
typedef unsigned long UBaseType_t;
|
||||
typedef portSTACK_TYPE StackType_t;
|
||||
typedef long BaseType_t;
|
||||
typedef unsigned long UBaseType_t;
|
||||
|
||||
|
||||
#if( configUSE_16_BIT_TICKS == 1 )
|
||||
typedef uint16_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffff
|
||||
#else
|
||||
typedef uint32_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
|
||||
#if ( configUSE_16_BIT_TICKS == 1 )
|
||||
typedef uint16_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffff
|
||||
#else
|
||||
typedef uint32_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
|
||||
|
||||
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
|
||||
not need to be guarded with a critical section. */
|
||||
#define portTICK_TYPE_IS_ATOMIC 1
|
||||
#endif
|
||||
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
|
||||
* not need to be guarded with a critical section. */
|
||||
#define portTICK_TYPE_IS_ATOMIC 1
|
||||
#endif
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Architecture specifics. */
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 8
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 8
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
/* Scheduler utilities. */
|
||||
extern void vPortYield( void );
|
||||
#define portNVIC_INT_CTRL ( ( volatile uint32_t *) 0xe000ed04 )
|
||||
#define portNVIC_PENDSVSET 0x10000000
|
||||
#define portYIELD() vPortYield()
|
||||
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET
|
||||
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
|
||||
extern void vPortYield( void );
|
||||
#define portNVIC_INT_CTRL ( ( volatile uint32_t * ) 0xe000ed04 )
|
||||
#define portNVIC_PENDSVSET 0x10000000
|
||||
#define portYIELD() vPortYield()
|
||||
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) *( portNVIC_INT_CTRL ) = portNVIC_PENDSVSET
|
||||
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
/* Critical section management. */
|
||||
|
||||
extern void vPortEnterCritical( void );
|
||||
extern void vPortExitCritical( void );
|
||||
extern uint32_t ulSetInterruptMaskFromISR( void );
|
||||
extern void vClearInterruptMaskFromISR( uint32_t ulMask );
|
||||
extern void vPortEnterCritical( void );
|
||||
extern void vPortExitCritical( void );
|
||||
extern uint32_t ulSetInterruptMaskFromISR( void );
|
||||
extern void vClearInterruptMaskFromISR( uint32_t ulMask );
|
||||
|
||||
#define portDISABLE_INTERRUPTS() __asm volatile( "cpsid i" )
|
||||
#define portENABLE_INTERRUPTS() __asm volatile( "cpsie i" )
|
||||
#define portENTER_CRITICAL() vPortEnterCritical()
|
||||
#define portEXIT_CRITICAL() vPortExitCritical()
|
||||
#define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMaskFromISR()
|
||||
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vClearInterruptMaskFromISR( x )
|
||||
#define portDISABLE_INTERRUPTS() __asm volatile ( "cpsid i" )
|
||||
#define portENABLE_INTERRUPTS() __asm volatile ( "cpsie i" )
|
||||
#define portENTER_CRITICAL() vPortEnterCritical()
|
||||
#define portEXIT_CRITICAL() vPortExitCritical()
|
||||
#define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMaskFromISR()
|
||||
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMaskFromISR( x )
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Tickless idle/low power functionality. */
|
||||
#ifndef portSUPPRESS_TICKS_AND_SLEEP
|
||||
extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
|
||||
#define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
|
||||
#endif
|
||||
#ifndef portSUPPRESS_TICKS_AND_SLEEP
|
||||
extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
|
||||
#define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
|
||||
#endif
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task function macros as described on the FreeRTOS.org WEB site. */
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
|
||||
|
||||
#define portNOP()
|
||||
#define portNOP()
|
||||
|
||||
/* Suppress warnings that are generated by the IAR tools, but cannot be fixed in
|
||||
the source code because to do so would cause other compilers to generate
|
||||
warnings. */
|
||||
#pragma diag_suppress=Pa082
|
||||
* the source code because to do so would cause other compilers to generate
|
||||
* warnings. */
|
||||
#pragma diag_suppress=Pa082
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue