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Notes:

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+ The MPU port is not supported in this revision number.
+ The documentation for the static allocation functions in the header files has not yet been updated for this revision.

Kernel updates:
+ Simplify the static allocation of objects implementation.
+ Introduce configSUPPORT_DYNAMIC_ALLOCATION in addition to the existing configSUPPORT_STATIC_ALLOCATION so FreeRTOS can be built without providing a heap at all.

Demo application updates:
+ Update the demos to take into account the new configSUPPORT_DYNAMIC_ALLOCATION constant.
+ Add an MSVC demo that only uses static allocation, and does not include a FreeRTOS heap.
+ Update the MSVC project to use both configSUPPORT_STATIC_ALLOCATION and configSUPPORT_DYNAMIC_ALLOCATION.
+ Update the MingW project to use only configSUPPORT_DYNAMIC_ALLOCATION.
This commit is contained in:
Richard Barry 2016-03-22 16:23:37 +00:00
parent 283bc18d23
commit 6568ba6eb0
50 changed files with 2350 additions and 3914 deletions
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67
FreeRTOS/Source/portable/WizC/PIC18/port.c
View file

@ -70,7 +70,7 @@
/*
Changes from V3.2.1
+ CallReturn Depth increased from 8 to 10 levels to accomodate wizC/fedC V12.
Changes from V3.2.0
+ TBLPTRU is now initialised to zero during the initial stack creation of a new task. This solves
an error on devices with more than 64kB ROM.
@ -134,7 +134,7 @@ uint16_t usCalcMinStackSize = 0;
/*-----------------------------------------------------------*/
/*
* We initialise ucCriticalNesting to the middle value an
* We initialise ucCriticalNesting to the middle value an
* uint8_t can contain. This way portENTER_CRITICAL()
* and portEXIT_CRITICAL() can be called without interrupts
* being enabled before the scheduler starts.
@ -143,9 +143,9 @@ register uint8_t ucCriticalNesting = 0x7F;
/*-----------------------------------------------------------*/
/*
/*
* Initialise the stack of a new task.
* See portSAVE_CONTEXT macro for description.
* See portSAVE_CONTEXT macro for description.
*/
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
{
@ -161,7 +161,7 @@ uint8_t ucScratch;
ucScratch = PRODL;
/*
* Place a few bytes of known values on the bottom of the stack.
* Place a few bytes of known values on the bottom of the stack.
* This is just useful for debugging.
*/
// *pxTopOfStack-- = 0x11;
@ -210,10 +210,10 @@ uint8_t ucScratch;
{
*pxTopOfStack-- = ( StackType_t ) 0;
}
/*
* The only function return address so far is the address of the task entry.
* The order is TOSU/TOSH/TOSL. For devices > 64kB, TOSU is put on the
* The order is TOSU/TOSH/TOSL. For devices > 64kB, TOSU is put on the
* stack, too. TOSU is always written as zero here because wizC does not allow
* functionpointers to point above 64kB in ROM.
*/
@ -231,12 +231,12 @@ uint8_t ucScratch;
/*
* The code generated by wizC does not maintain separate
* stack and frame pointers. Therefore the portENTER_CRITICAL macro cannot
* stack and frame pointers. Therefore the portENTER_CRITICAL macro cannot
* use the stack as per other ports. Instead a variable is used to keep
* track of the critical section nesting. This variable has to be stored
* as part of the task context and is initially set to zero.
*/
*pxTopOfStack-- = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
*pxTopOfStack-- = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
return pxTopOfStack;
}
@ -272,7 +272,7 @@ BaseType_t xPortStartScheduler( void )
/*
* Setup a timer for the tick ISR for the preemptive scheduler.
*/
portSetupTick();
portSetupTick();
/*
* Restore the context of the first task to run.
@ -321,30 +321,39 @@ void vPortYield( void )
*/
portRESTORE_CONTEXT();
}
/*-----------------------------------------------------------*/
#if( configSUPPORT_DYNAMIC_ALLOCATION == 1 )
void *pvPortMalloc( uint16_t usWantedSize )
{
void *pvReturn;
vTaskSuspendAll();
{
pvReturn = malloc( ( malloc_t ) usWantedSize );
}
xTaskResumeAll();
return pvReturn;
}
#endif /* configSUPPORT_STATIC_ALLOCATION */
/*-----------------------------------------------------------*/
void *pvPortMalloc( uint16_t usWantedSize )
{
void *pvReturn;
#if( configSUPPORT_DYNAMIC_ALLOCATION == 1 )
vTaskSuspendAll();
void vPortFree( void *pv )
{
pvReturn = malloc( ( malloc_t ) usWantedSize );
}
xTaskResumeAll();
return pvReturn;
}
void vPortFree( void *pv )
{
if( pv )
{
vTaskSuspendAll();
if( pv )
{
free( pv );
vTaskSuspendAll();
{
free( pv );
}
xTaskResumeAll();
}
xTaskResumeAll();
}
}
#endif /* configSUPPORT_STATIC_ALLOCATION */