FreeRTOS-Kernel/Demo/msp430_CrossWorks/ParTest/ParTest.c

/*
	FreeRTOS V5.4.1 - Copyright (C) 2009 Real Time Engineers Ltd.

	This file is part of the FreeRTOS distribution.

	FreeRTOS is free software; you can redistribute it and/or modify it	under 
	the terms of the GNU General Public License (version 2) as published by the 
	Free Software Foundation and modified by the FreeRTOS exception.
	**NOTE** The exception to the GPL is included to allow you to distribute a
	combined work that includes FreeRTOS without being obliged to provide the 
	source code for proprietary components outside of the FreeRTOS kernel.  
	Alternative commercial license and support terms are also available upon 
	request.  See the licensing section of http://www.FreeRTOS.org for full 
	license details.

	FreeRTOS is distributed in the hope that it will be useful,	but WITHOUT
	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
	more details.

	You should have received a copy of the GNU General Public License along
	with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
	Temple Place, Suite 330, Boston, MA  02111-1307  USA.


	***************************************************************************
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	Please ensure to read the configuration and relevant port sections of the
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*/

/*-----------------------------------------------------------
 * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'
 * is really operating on the LCD display.
 *-----------------------------------------------------------*/

/*
 * This demo is configured to execute on the ES449 prototyping board from
 * SoftBaugh. The ES449 has a built in LCD display and a single built in user
 * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks
 * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the
 * next LED 1, etc.
 *
 * There is a single genuine on board LED referenced as LED 10.
 */


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

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

/* Constants required to setup the LCD. */
#define LCD_DIV_64 5

/* Constants required to access the "LED's".  The LED segments are turned on
and off to generate '*' characters. */
#define partstNUM_LEDS			( ( unsigned portCHAR ) 6 )
#define partstSEGMENTS_ON		( ( unsigned portCHAR ) 0x0f )
#define partstSEGMENTS_OFF		( ( unsigned portCHAR ) 0x00 )

/* The LED number of the real on board LED, rather than a simulated LED. */
#define partstON_BOARD_LED		( ( unsigned portBASE_TYPE ) 10 )
#define mainON_BOARD_LED_BIT	( ( unsigned portCHAR ) 0x01 )

/* The LCD segments used to generate the '*' characters for LED's 0 to 5. */
unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {	( unsigned portCHAR * )0xa4, 
																( unsigned portCHAR * )0xa2, 
																( unsigned portCHAR * )0xa0, 
																( unsigned portCHAR * )0x9e,
																( unsigned portCHAR * )0x9c,
																( unsigned portCHAR * )0x9a };

unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {	( unsigned portCHAR * )0xa3, 
																( unsigned portCHAR * )0xa1, 
																( unsigned portCHAR * )0x9f, 
																( unsigned portCHAR * )0x9d,
																( unsigned portCHAR * )0x9b,
																( unsigned portCHAR * )0x99 };

/*
 * Toggle the single genuine built in LED.
 */
static void prvToggleOnBoardLED( void );

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

void vParTestInitialise( void )
{
	/* Initialise the LCD hardware. */

	/* Used for the onboard LED. */
	P1DIR = 0x01;

	// Setup Basic Timer for LCD operation
	BTCTL = (LCD_DIV_64+0x23);

	// Setup port functions
	P1SEL = 0x32;
	P2SEL = 0x00;
	P3SEL = 0x00;
	P4SEL = 0xFC;
	P5SEL = 0xFF;
	
	/* Initialise all segments to off. */
	LCDM1 = partstSEGMENTS_OFF;	
	LCDM2 = partstSEGMENTS_OFF;	
	LCDM3 = partstSEGMENTS_OFF;	
	LCDM4 = partstSEGMENTS_OFF;	
	LCDM5 = partstSEGMENTS_OFF;	
	LCDM6 = partstSEGMENTS_OFF;	
	LCDM7 = partstSEGMENTS_OFF;	
	LCDM8 = partstSEGMENTS_OFF;	
	LCDM9 = partstSEGMENTS_OFF;	
	LCDM10 = partstSEGMENTS_OFF;	
	LCDM11 = partstSEGMENTS_OFF;	
	LCDM12 = partstSEGMENTS_OFF;	
	LCDM13 = partstSEGMENTS_OFF;	
	LCDM14 = partstSEGMENTS_OFF;	
	LCDM15 = partstSEGMENTS_OFF;	
	LCDM16 = partstSEGMENTS_OFF;	
	LCDM17 = partstSEGMENTS_OFF;	
	LCDM18 = partstSEGMENTS_OFF;	
	LCDM19 = partstSEGMENTS_OFF;	
	LCDM20 = partstSEGMENTS_OFF;	

	/* Setup LCD control. */
	LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
	/* Set or clear the output [in this case show or hide the '*' character. */
	if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )
	{
		vTaskSuspendAll();
		{
			if( xValue )
			{
				/* Turn on the segments required to show the '*'. */
				*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
				*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
			}
			else
			{
				/* Turn off all the segments. */
				*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
				*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
			}
		}
		xTaskResumeAll();
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
	if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )
	{
		vTaskSuspendAll();
		{
			/* If the '*' is already showing - hide it.  If it is not already
			showing then show it. */
			if( *( ucRHSSegments[ uxLED ] ) )
			{
				*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
				*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
			}
			else
			{
				*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
				*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
			}
		}
		xTaskResumeAll();
	}
	else
	{
		if( uxLED == partstON_BOARD_LED )
		{
			/* The request related to the genuine on board LED. */
			prvToggleOnBoardLED();
		}
	}	
}
/*-----------------------------------------------------------*/

static void prvToggleOnBoardLED( void )
{
static unsigned portSHORT sState = pdFALSE;

	/* Toggle the state of the single genuine on board LED. */
	if( sState )	
	{
		P1OUT |= mainON_BOARD_LED_BIT;
	}
	else
	{
		P1OUT &= ~mainON_BOARD_LED_BIT;
	}

	sState = !sState;
}
/*-----------------------------------------------------------*/