FreeRTOS-Plus/Demo/FreeRTOS_Plus_UDP_and_CLI_LPC1830_GCC/LEDs.c

/*
    FreeRTOS V7.3.0 - Copyright (C) 2012 Real Time Engineers Ltd.

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*/

/* Simple LED IO functions.  LED 0 is toggled by a timer every half second. */

/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "timers.h"

/* Library includes. */
#include "lpc18xx_gpio.h"
#include "lpc18xx_scu.h"
#include "lpc18xx_cgu.h"

#define ledTOGGLE_RATE	( 500 / portTICK_RATE_MS )

#define ledLED0_PORT	1
#define ledLED0_BIT		( 1UL << 11UL )

#define ledLED1_PORT	2
#define ledLED1_BIT		( 1UL << 12UL )

/*
 * Toggles an LED just to show the application is running. 
 */
static void prvLEDToggleTimerCallback( xTimerHandle xTimer );

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

void vLEDsInitialise( void )
{
static xTimerHandle xLEDToggleTimer = NULL;

	/* Set the LED pin-muxing and configure as output. */
	scu_pinmux( 0x2 , 11, MD_PUP, FUNC0 );
	scu_pinmux( 0x2 , 12, MD_PUP, FUNC0 );
	GPIO_SetDir( ledLED0_PORT, ledLED0_BIT, 1 );
	GPIO_SetDir( ledLED1_PORT, ledLED1_BIT, 1 );

    /* Create the timer used to toggle LED0. */
	xLEDToggleTimer = xTimerCreate(	( const int8_t * ) "LEDTmr", 	/* Just a text name to associate with the timer, useful for debugging, but not used by the kernel. */
								ledTOGGLE_RATE,						/* The period of the timer. */
								pdTRUE,								/* This timer will autoreload, so uxAutoReload is set to pdTRUE. */
								NULL,								/* The timer ID is not used, so can be set to NULL. */
								prvLEDToggleTimerCallback );		/* The callback function executed each time the timer expires. */

    /* Sanity check that the timer was actually created. */
    configASSERT( xLEDToggleTimer );

    /* Start the timer.  If this is called before the scheduler is started then
    the block time will automatically get changed to 0 (from portMAX_DELAY). */
    xTimerStart( xLEDToggleTimer, portMAX_DELAY );
}
/*-----------------------------------------------------------*/

static void prvLEDToggleTimerCallback( xTimerHandle xTimer )
{
static uint8_t ucState = 0;

	/* Remove compiler warnings. */
	( void ) xTimer;

	/* Just toggle an LED to show the program is running. */
	if( ucState == 0 )
	{
		GPIO_SetValue( ledLED0_PORT, ledLED0_BIT );
	}
	else
	{
		GPIO_ClearValue( ledLED0_PORT, ledLED0_BIT );
	}
	
	ucState = !ucState;
}