Subversion Repositories openrisc

/*
    FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
 
    ***************************************************************************
    *                                                                         *
    * If you are:                                                             *
    *                                                                         *
    *    + New to FreeRTOS,                                                   *
    *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
    *    + Looking for basic training,                                        *
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    *                                                                         *
    * then take a look at the FreeRTOS books - available as PDF or paperback  *
    *                                                                         *
    *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
    *                  http://www.FreeRTOS.org/Documentation                  *
    *                                                                         *
    * A pdf reference manual is also available.  Both are usually delivered   *
    * to your inbox within 20 minutes to two hours when purchased between 8am *
    * and 8pm GMT (although please allow up to 24 hours in case of            *
    * exceptional circumstances).  Thank you for your support!                *
    *                                                                         *
    ***************************************************************************
 
    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.
    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 and the FreeRTOS license exception along with FreeRTOS; if not it 
    can be viewed here: http://www.freertos.org/a00114.html and also obtained 
    by writing to Richard Barry, contact details for whom are available on the
    FreeRTOS WEB site.
 
    1 tab == 4 spaces!
 
    http://www.FreeRTOS.org - Documentation, latest information, license and
    contact details.
 
    http://www.SafeRTOS.com - A version that is certified for use in safety
    critical systems.
 
    http://www.OpenRTOS.com - Commercial support, development, porting,
    licensing and training services.
*/
 
/*-----------------------------------------------------------
 * 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;
}
/*-----------------------------------------------------------*/