FreeRTOS-Kernel/FreeRTOS/Demo/CORTEX_M4F_CEC1302_Keil/main.c

/*
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    Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.

    ***************************************************************************
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    ***************************************************************************

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*/

/******************************************************************************
 * This project provides two demo applications.  A simple blinky style project
 * that demonstrates low power tickless functionality, and a more comprehensive
 * test and demo application.  The configCREATE_LOW_POWER_DEMO setting, which is
 * defined in FreeRTOSConfig.h, is used to select between the two.  The simply
 * blinky low power demo is implemented and described in main_low_power.c.  The
 * more comprehensive test and demo application is implemented and described in
 * main_full.c.
 *
 * This file implements the code that is not demo specific, including the
 * hardware setup and standard FreeRTOS hook functions.
 *
 * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
 * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
 * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
 *
 */

/* Scheduler include files. */
#include "FreeRTOS.h"
#include "task.h"

/* Hardware register addresses. */
#define mainVTOR 			( * ( uint32_t * ) 0xE000ED08 )
#define mainNVIC_AUX_ACTLR	( * ( uint32_t * ) 0xE000E008 )

/*-----------------------------------------------------------*/

/*
 * Configure the hardware as necessary to run this demo.
 */
static void prvSetupHardware( void );

/*
 * main_low_power() is used when configCREATE_LOW_POWER_DEMO is set to 1.
 * main_full() is used when configCREATE_LOW_POWER_DEMO is set to 0.
 */
#if( configCREATE_LOW_POWER_DEMO == 1 )

	extern void main_low_power( void );

#else

	extern void main_full( void );

	/* Some of the tests and examples executed as part of the full demo make use
	of the tick hook to call API functions from an interrupt context. */
	extern void vFullDemoTickHook( void );

#endif /* #if configCREATE_LOW_POWER_DEMO == 1 */

/* Prototypes for the standard FreeRTOS callback/hook functions implemented
within this file. */
void vApplicationMallocFailedHook( void );
void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void vApplicationTickHook( void );

/*-----------------------------------------------------------*/

/* The variable that is incremented to represent each LED toggle.  On the
clicker hardware the LED state is set to the value of the least significant bit
of this variable.  On other hardware, where an LED is not used, the LED just
keeps a count of the number of times the LED would otherwise have been toggled.
See the comments in main_low_power.c and main_full.c for information on the
expected LED toggle rate). */
volatile uint32_t ulLED = 0;

/*-----------------------------------------------------------*/

int main( void )
{
	/* Configure the hardware ready to run the demo. */
	prvSetupHardware();

	/* The configCREATE_LOW_POWER_DEMO setting is described at the top
	of this file. */
	#if( configCREATE_LOW_POWER_DEMO == 1 )
	{
		main_low_power();
	}
	#else
	{
		main_full();
	}
	#endif

	/* Should not get here. */
	return 0;
}
/*-----------------------------------------------------------*/

static void prvSetupHardware( void )
{
	/* Disable M4 write buffer: fix MEC1322 hardware bug. */
	mainNVIC_AUX_ACTLR |= 0x07;

	#ifdef __CC_ARM
	{
		/* Assuming downloading code via the debugger - so ensure the hardware
		is using the vector table downloaded with the application. */
		extern unsigned long __Vectors[];
		mainVTOR = ( uint32_t ) __Vectors;
	}
	#endif
}
/*-----------------------------------------------------------*/

void vApplicationMallocFailedHook( void )
{
	/* Called if a call to pvPortMalloc() fails because there is insufficient
	free memory available in the FreeRTOS heap.  pvPortMalloc() is called
	internally by FreeRTOS API functions that create tasks, queues, software
	timers, and semaphores.  The size of the FreeRTOS heap is set by the
	configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */

	/* Force an assert. */
	configASSERT( ( volatile void * ) NULL );
}
/*-----------------------------------------------------------*/

void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
{
	( void ) pcTaskName;
	( void ) pxTask;

	/* Run time stack overflow checking is performed if
	configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2.  This hook
	function is called if a stack overflow is detected. */

	/* Force an assert. */
	configASSERT( ( volatile void * ) NULL );
}
/*-----------------------------------------------------------*/

void vApplicationIdleHook( void )
{
volatile size_t xFreeHeapSpace;

	/* This is just a trivial example of an idle hook.  It is called on each
	cycle of the idle task.  It must *NOT* attempt to block.  In this case the
	idle task just queries the amount of FreeRTOS heap that remains.  See the
	memory management section on the http://www.FreeRTOS.org web site for memory
	management options.  If there is a lot of heap memory free then the
	configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up
	RAM. */
	xFreeHeapSpace = xPortGetFreeHeapSize();

	/* Remove compiler warning about xFreeHeapSpace being set but never used. */
	( void ) xFreeHeapSpace;
}
/*-----------------------------------------------------------*/

void vApplicationTickHook( void )
{
	/* The full demo includes tests that run from the tick hook. */
	#if( configCREATE_LOW_POWER_DEMO == 0 )
	{
		/* Some of the tests and demo tasks executed by the full demo include
		interaction from an interrupt - for which the tick interrupt is used
		via the tick hook function. */
		vFullDemoTickHook();
	}
	#endif
}
/*-----------------------------------------------------------*/

void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint16_t *pusIdleTaskStackSize )
{
	/* configUSE_STATIC_ALLOCATION is set to 1, so the application has the
	opportunity to supply the buffers that will be used by the Idle task as its
	stack and to hold its TCB.  If these are set to NULL then the buffers will
	be allocated dynamically, just as if xTaskCreate() had been called. */
	*ppxIdleTaskTCBBuffer = NULL;
	*ppxIdleTaskStackBuffer = NULL;
	*pusIdleTaskStackSize = configMINIMAL_STACK_SIZE; /* In words.  NOT in bytes! */
}
/*-----------------------------------------------------------*/

void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint16_t *pusTimerTaskStackSize )
{
	/* configUSE_STATIC_ALLOCATION is set to 1, so the application has the
	opportunity to supply the buffers that will be used by the Timer/RTOS daemon
	task as its	stack and to hold its TCB.  If these are set to NULL then the
	buffers will be allocated dynamically, just as if xTaskCreate() had been
	called. */
	*ppxTimerTaskTCBBuffer = NULL;
	*ppxTimerTaskStackBuffer = NULL;
	*pusTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH; /* In words.  NOT in bytes! */
}
/*-----------------------------------------------------------*/