/* | |
FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* If you are: * | |
* * | |
* + New to FreeRTOS, * | |
* + Wanting to learn FreeRTOS or multitasking in general quickly * | |
* + Looking for basic training, * | |
* + Wanting to improve your FreeRTOS skills and productivity * | |
* * | |
* 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. | |
*/ | |
/* | |
Changes from V1.01: | |
+ Types used updated. | |
+ Add vParTestToggleLED(); | |
Changes from V2.0.0 | |
+ Use scheduler suspends in place of critical sections. | |
*/ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "partest.h" | |
#define partstALL_OUTPUTS_OFF ( ( unsigned short) 0x00 ) | |
#define partstMAX_OUTPUT_LED ( ( unsigned char ) 7 ) | |
#define partstPORT_F_ADDR ( ( unsigned short ) 0x605 ) | |
#define partstPORT_DIRECTION_REG ( ( unsigned short ) 0x606 ) | |
#define partstPORT_F_DIR_BIT ( ( unsigned short ) 0x20 ) | |
/*lint -e956 File scope parameters okay here. */ | |
static volatile unsigned char ucCurrentOutputValue = partstALL_OUTPUTS_OFF; | |
/*lint +e956 */ | |
/*----------------------------------------------------------- | |
* Simple parallel port IO routines. | |
*-----------------------------------------------------------*/ | |
void vParTestInitialise( void ) | |
{ | |
unsigned short usInput; | |
ucCurrentOutputValue = partstALL_OUTPUTS_OFF; | |
/* Set the direction to output for port F. */ | |
usInput = portINPUT_BYTE( partstPORT_DIRECTION_REG ); | |
usInput |= partstPORT_F_DIR_BIT; | |
portOUTPUT_BYTE( partstPORT_DIRECTION_REG, usInput ); | |
/* Start with all outputs off. */ | |
portOUTPUT_BYTE( partstPORT_F_ADDR, partstALL_OUTPUTS_OFF ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue ) | |
{ | |
unsigned char ucBit = ( unsigned char ) 1; | |
if( uxLED <= partstMAX_OUTPUT_LED ) | |
{ | |
ucBit <<= uxLED; | |
} | |
vTaskSuspendAll(); | |
{ | |
if( xValue == pdTRUE ) | |
{ | |
ucBit ^= ( unsigned char ) 0xff; | |
ucCurrentOutputValue &= ucBit; | |
} | |
else | |
{ | |
ucCurrentOutputValue |= ucBit; | |
} | |
portOUTPUT_BYTE( partstPORT_F_ADDR, ( unsigned ) ucCurrentOutputValue ); | |
} | |
xTaskResumeAll(); | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestToggleLED( unsigned portBASE_TYPE uxLED ) | |
{ | |
unsigned char ucBit; | |
if( uxLED <= partstMAX_OUTPUT_LED ) | |
{ | |
ucBit = ( ( unsigned char ) 1 ) << uxLED; | |
vTaskSuspendAll(); | |
{ | |
if( ucCurrentOutputValue & ucBit ) | |
{ | |
ucCurrentOutputValue &= ~ucBit; | |
} | |
else | |
{ | |
ucCurrentOutputValue |= ucBit; | |
} | |
portOUTPUT_BYTE( partstPORT_F_ADDR, ( unsigned ) ucCurrentOutputValue ); | |
} | |
xTaskResumeAll(); | |
} | |
} | |