Demo/CORTEX_STM32F103_IAR/ParTest/ParTest.c

/*
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	This file is part of the FreeRTOS.org distribution.

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	it under the terms of the GNU General Public License as published by
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	(at your option) any later version.

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	but WITHOUT ANY WARRANTY; without even the implied warranty of
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	GNU General Public License for more details.

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	along with FreeRTOS.org; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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	a combined work that includes FreeRTOS.org, without being obliged to provide
	the source code for any proprietary components.  See the licensing section
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*/

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *-----------------------------------------------------------*/

/* FreeRTOS.org includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "partest.h"

/* Library includes. */
#include "stm32f10x_lib.h"

#define partstMAX_OUTPUT_LED	( 4 )
#define partstFIRST_LED			GPIO_Pin_6

static unsigned portSHORT usOutputValue = 0;

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

void vParTestInitialise( void )
{
GPIO_InitTypeDef GPIO_InitStructure;

	/* Configure PC.06, PC.07, PC.08 and PC.09 as output push-pull */
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init( GPIOC, &GPIO_InitStructure );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned portSHORT usBit;

	vTaskSuspendAll();
	{
		if( uxLED < partstMAX_OUTPUT_LED )
		{
			usBit = partstFIRST_LED << uxLED;

			if( xValue == pdFALSE )
			{
				usBit ^= ( unsigned portSHORT ) 0xffff;
				usOutputValue &= usBit;
			}
			else
			{
				usOutputValue |= usBit;
			}

			GPIO_Write( GPIOC, usOutputValue );
		}	
	}
	xTaskResumeAll();
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned portSHORT usBit;

	vTaskSuspendAll();
	{
		if( uxLED < partstMAX_OUTPUT_LED )
		{
			usBit = partstFIRST_LED << uxLED;

			if( usOutputValue & usBit )
			{
				usOutputValue &= ~usBit;
			}
			else
			{
				usOutputValue |= usBit;
			}

			GPIO_Write( GPIOC, usOutputValue );
		}
	}
	xTaskResumeAll();
}
/*-----------------------------------------------------------*/