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Richard Barry
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20100923-V6.1.0-RC2/Demo/msp430_GCC/ParTest/ParTest.c
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20100923-V6.1.0-RC2/Demo/msp430_GCC/ParTest/ParTest.c
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/*
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FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS books - available as PDF or paperback *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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***NOTE*** The exception to the GPL is included to allow you to distribute
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a combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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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 char ) 6 )
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#define partstSEGMENTS_ON ( ( unsigned char ) 0x0f )
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#define partstSEGMENTS_OFF ( ( unsigned char ) 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 char ) 0x01 )
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/* The LCD segments used to generate the '*' characters for LED's 0 to 5. */
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unsigned char * const ucRHSSegments[ partstNUM_LEDS ] = { ( unsigned char * )0xa4,
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( unsigned char * )0xa2,
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( unsigned char * )0xa0,
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( unsigned char * )0x9e,
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( unsigned char * )0x9c,
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( unsigned char * )0x9a };
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unsigned char * const ucLHSSegments[ partstNUM_LEDS ] = { ( unsigned char * )0xa3,
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( unsigned char * )0xa1,
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( unsigned char * )0x9f,
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( unsigned char * )0x9d,
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( unsigned char * )0x9b,
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( unsigned char * )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 short 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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