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Richard Barry
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20080212/Demo/msp430_GCC/ParTest/ParTest.c
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20080212/Demo/msp430_GCC/ParTest/ParTest.c
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/*
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FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
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This file is part of the FreeRTOS.org distribution.
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FreeRTOS.org is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FreeRTOS.org is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FreeRTOS.org; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes FreeRTOS.org, without being obliged to provide
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the source code for any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details of how and when the exception
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can be applied.
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***************************************************************************
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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+++ http://www.FreeRTOS.org +++
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Documentation, latest information, license and contact details.
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+++ http://www.SafeRTOS.com +++
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A version that is certified for use in safety critical systems.
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+++ http://www.OpenRTOS.com +++
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Commercial support, development, porting, licensing and training services.
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***************************************************************************
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*/
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/*-----------------------------------------------------------
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* Characters on the LCD are used to simulate LED's. In this case the 'ParTest'
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* is really operating on the LCD display.
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*-----------------------------------------------------------*/
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/*
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* This demo is configured to execute on the ES449 prototyping board from
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* SoftBaugh. The ES449 has a built in LCD display and a single built in user
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* LED. Therefore, in place of flashing an LED, the 'flash' and 'check' tasks
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* toggle '*' characters on the LCD. The left most '*' represents LED 0, the
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* next LED 1, etc.
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*
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* There is a single genuine on board LED referenced as LED 10.
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*/
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/* Standard includes. */
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#include <signal.h>
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Demo application includes. */
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#include "partest.h"
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/* Constants required to setup the LCD. */
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#define LCD_DIV_64 5
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/* Constants required to access the "LED's". The LED segments are turned on
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and off to generate '*' characters. */
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#define partstNUM_LEDS ( ( unsigned portCHAR ) 6 )
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#define partstSEGMENTS_ON ( ( unsigned portCHAR ) 0x0f )
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#define partstSEGMENTS_OFF ( ( unsigned portCHAR ) 0x00 )
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/* The LED number of the real on board LED, rather than a simulated LED. */
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#define partstON_BOARD_LED ( ( unsigned portBASE_TYPE ) 10 )
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#define mainON_BOARD_LED_BIT ( ( unsigned portCHAR ) 0x01 )
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/* The LCD segments used to generate the '*' characters for LED's 0 to 5. */
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unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = { ( unsigned portCHAR * )0xa4,
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( unsigned portCHAR * )0xa2,
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( unsigned portCHAR * )0xa0,
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( unsigned portCHAR * )0x9e,
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( unsigned portCHAR * )0x9c,
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( unsigned portCHAR * )0x9a };
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unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = { ( unsigned portCHAR * )0xa3,
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( unsigned portCHAR * )0xa1,
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( unsigned portCHAR * )0x9f,
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( unsigned portCHAR * )0x9d,
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( unsigned portCHAR * )0x9b,
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( unsigned portCHAR * )0x99 };
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/*
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* Toggle the single genuine built in LED.
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*/
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static void prvToggleOnBoardLED( void );
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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/* Initialise the LCD hardware. */
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/* Used for the onboard LED. */
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P1DIR = 0x01;
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// Setup Basic Timer for LCD operation
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BTCTL = (LCD_DIV_64+0x23);
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// Setup port functions
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P1SEL = 0x32;
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P2SEL = 0x00;
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P3SEL = 0x00;
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P4SEL = 0xFC;
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P5SEL = 0xFF;
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/* Initialise all segments to off. */
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LCDM1 = partstSEGMENTS_OFF;
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LCDM2 = partstSEGMENTS_OFF;
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LCDM3 = partstSEGMENTS_OFF;
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LCDM4 = partstSEGMENTS_OFF;
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LCDM5 = partstSEGMENTS_OFF;
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LCDM6 = partstSEGMENTS_OFF;
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LCDM7 = partstSEGMENTS_OFF;
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LCDM8 = partstSEGMENTS_OFF;
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LCDM9 = partstSEGMENTS_OFF;
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LCDM10 = partstSEGMENTS_OFF;
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LCDM11 = partstSEGMENTS_OFF;
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LCDM12 = partstSEGMENTS_OFF;
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LCDM13 = partstSEGMENTS_OFF;
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LCDM14 = partstSEGMENTS_OFF;
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LCDM15 = partstSEGMENTS_OFF;
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LCDM16 = partstSEGMENTS_OFF;
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LCDM17 = partstSEGMENTS_OFF;
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LCDM18 = partstSEGMENTS_OFF;
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LCDM19 = partstSEGMENTS_OFF;
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LCDM20 = partstSEGMENTS_OFF;
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/* Setup LCD control. */
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LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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{
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/* Set or clear the output [in this case show or hide the '*' character. */
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if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )
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{
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vTaskSuspendAll();
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{
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if( xValue )
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{
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/* Turn on the segments required to show the '*'. */
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*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
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*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
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}
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else
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{
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/* Turn off all the segments. */
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*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
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*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
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}
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}
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xTaskResumeAll();
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}
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}
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/*-----------------------------------------------------------*/
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void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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{
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if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )
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{
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vTaskSuspendAll();
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{
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/* If the '*' is already showing - hide it. If it is not already
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showing then show it. */
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if( *( ucRHSSegments[ uxLED ] ) )
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{
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*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
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*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;
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}
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else
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{
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*( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
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*( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;
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}
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}
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xTaskResumeAll();
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}
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else
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{
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if( uxLED == partstON_BOARD_LED )
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{
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/* The request related to the genuine on board LED. */
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prvToggleOnBoardLED();
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}
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}
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}
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/*-----------------------------------------------------------*/
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static void prvToggleOnBoardLED( void )
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{
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static unsigned portSHORT sState = pdFALSE;
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/* Toggle the state of the single genuine on board LED. */
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if( sState )
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{
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P1OUT |= mainON_BOARD_LED_BIT;
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}
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else
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{
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P1OUT &= ~mainON_BOARD_LED_BIT;
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}
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sState = !sState;
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}
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/*-----------------------------------------------------------*/
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