FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/RTOSDemo/src/LEDs.c

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*/


/*-----------------------------------------------------------
 * Simple IO routines to control the LEDs.
 *-----------------------------------------------------------*/

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

/* Demo includes. */
#include "partest.h"

/* Xilinx includes. */
#include "xgpio.h"


#define partstNUM_LEDS	8

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

/* The GPIO instance to which the LEDs are connected. */
static XGpio xOutputGPIOInstance;

/* Maintains the current LED output state. */
static volatile UBaseType_t uxGPIOState = 0U;

/* Constant required by the Xilinx peripheral driver API functions that are
relevant to the particular hardware set up. */
static const unsigned long ulGPIOOutputChannel = 1UL;

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

void vParTestInitialise( void )
{
portBASE_TYPE xStatus;
const unsigned char ucSetToOutput = 0U;

	/* Initialize the GPIO for the LEDs. */
	xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_AXI_GPIO_0_DEVICE_ID );
	if( xStatus == XST_SUCCESS )
	{
		/* All bits on this channel are going to be outputs (LEDs). */
		XGpio_SetDataDirection( &xOutputGPIOInstance, ulGPIOOutputChannel, ucSetToOutput );

		/* Start with all LEDs off. */
		uxGPIOState = 0U;
		XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
	}

	configASSERT( ( xStatus == XST_SUCCESS ) );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( UBaseType_t uxLED, BaseType_t xValue )
{
	if( uxLED < partstNUM_LEDS )
	{
		taskENTER_CRITICAL();
		{
			if( xValue != pdFALSE )
			{
				uxGPIOState |= ( 1UL << uxLED );
			}
			else
			{
				uxGPIOState &= ~( 1UL << uxLED );
			}

			XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
		}
		taskEXIT_CRITICAL();
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
	if( uxLED < partstNUM_LEDS )
	{
		taskENTER_CRITICAL();
		{
			uxGPIOState ^= ( 1UL << uxLED );
			XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
		}
		taskEXIT_CRITICAL();
	}
}