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Changes to the FreeRTOS code:
+ Introduced xTaskCreateStatic() to allow tasks to be created without any dynamic memory allocation. + When a task notification is used to unblock a task from an ISR, but the xHigherPriorityTaskWoken parameter is not used, then pend a context switch to occur during the next tick interrupt. Demo application changes: + Updated TaskNotify.c to test the case where a task is unblocked by an ISR, but does not use its xHigherPriorityTaskWoken parameter. + Updated the Win32 MSVC project to test statically allocated tasks being created and deleted. + Introduced StaticAllocation.c standard demo task.
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15 changed files with 839 additions and 115 deletions
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@ -154,6 +154,8 @@ void vApplicationMallocFailedHook( void );
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void vApplicationIdleHook( void );
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void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
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void vApplicationTickHook( void );
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void vApplicationGetIdleTaskMemory( DummyTCB_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint16_t *pusIdleTaskStackSize );
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void vApplicationGetTimerTaskMemory( DummyTCB_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint16_t *pusTimerTaskStackSize );
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/*
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* Writes trace data to a disk file when the trace recording is stopped.
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@ -390,3 +392,37 @@ const HeapRegion_t xHeapRegions[] =
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}
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/*-----------------------------------------------------------*/
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void vApplicationGetIdleTaskMemory( DummyTCB_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint16_t *pusIdleTaskStackSize )
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{
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/* The buffers used by the idle task must be static so they are persistent, and
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so exist after this function returns. */
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static DummyTCB_t xIdleTaskTCB;
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static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ];
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/* configUSE_STATIC_ALLOCATION is set to 1, so the application has the
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opportunity to supply the buffers that will be used by the Idle task as its
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stack and to hold its TCB. If these are set to NULL then the buffers will
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be allocated dynamically, just as if xTaskCreate() had been called. */
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*ppxIdleTaskTCBBuffer = &xIdleTaskTCB;
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*ppxIdleTaskStackBuffer = uxIdleTaskStack;
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*pusIdleTaskStackSize = configMINIMAL_STACK_SIZE; /* In words. NOT in bytes! */
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}
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/*-----------------------------------------------------------*/
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DummyTCB_t xTimerTaskTCB;
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void vApplicationGetTimerTaskMemory( DummyTCB_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint16_t *pusTimerTaskStackSize )
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{
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/* The buffers used by the Timer/Daemon task must be static so they are
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persistent, and so exist after this function returns. */
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//static DummyTCB_t xTimerTaskTCB;
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static StackType_t uxTimerTaskStack[ configTIMER_TASK_STACK_DEPTH ];
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/* configUSE_STATIC_ALLOCATION is set to 1, so the application has the
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opportunity to supply the buffers that will be used by the Timer/RTOS daemon
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task as its stack and to hold its TCB. If these are set to NULL then the
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buffers will be allocated dynamically, just as if xTaskCreate() had been
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called. */
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*ppxTimerTaskTCBBuffer = &xTimerTaskTCB;
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*ppxTimerTaskStackBuffer = uxTimerTaskStack;
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*pusTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH; /* In words. NOT in bytes! */
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}
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