/* | |
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, * | |
* + 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. | |
*/ | |
/*----------------------------------------------------------- | |
* Simple parallel port IO routines. | |
*-----------------------------------------------------------*/ | |
/* Kernel includes. */ | |
#include "FreeRTOS.h" | |
/* Demo application includes. */ | |
#include "partest.h" | |
/* Library includes. */ | |
#include "xgpio_l.h" | |
/* Misc hardware specific definitions. */ | |
#define partstALL_AS_OUTPUT 0x00 | |
#define partstCHANNEL_1 0x01 | |
#define partstMAX_4BIT_LED 0x03 | |
/* The outputs are split into two IO sections, these variables maintain the | |
current value of either section. */ | |
static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit; | |
/*-----------------------------------------------------------*/ | |
/* | |
* Setup the IO for the LED outputs. | |
*/ | |
void vParTestInitialise( void ) | |
{ | |
/* Set both sets of LED's on the demo board to outputs. */ | |
XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT ); | |
XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT ); | |
/* Start with all outputs off. */ | |
uxCurrentOutput4Bit = 0; | |
XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 ); | |
uxCurrentOutput5Bit = 0; | |
XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue ) | |
{ | |
unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue; | |
portENTER_CRITICAL(); | |
{ | |
/* Which IO section does the LED being set/cleared belong to? The | |
4 bit or 5 bit outputs? */ | |
if( uxLED <= partstMAX_4BIT_LED ) | |
{ | |
uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR; | |
puxCurrentValue = &uxCurrentOutput4Bit; | |
} | |
else | |
{ | |
uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR; | |
puxCurrentValue = &uxCurrentOutput5Bit; | |
uxLED -= partstMAX_4BIT_LED; | |
} | |
/* Setup the bit mask accordingly. */ | |
uxLED = 0x01 << uxLED; | |
/* Maintain the current output value. */ | |
if( xValue ) | |
{ | |
*puxCurrentValue |= uxLED; | |
} | |
else | |
{ | |
*puxCurrentValue &= ~uxLED; | |
} | |
/* Write the value to the port. */ | |
XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue ); | |
} | |
portEXIT_CRITICAL(); | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestToggleLED( unsigned portBASE_TYPE uxLED ) | |
{ | |
unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue; | |
portENTER_CRITICAL(); | |
{ | |
/* Which IO section does the LED being toggled belong to? The | |
4 bit or 5 bit outputs? */ | |
if( uxLED <= partstMAX_4BIT_LED ) | |
{ | |
uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR; | |
puxCurrentValue = &uxCurrentOutput4Bit; | |
} | |
else | |
{ | |
uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR; | |
puxCurrentValue = &uxCurrentOutput5Bit; | |
uxLED -= partstMAX_4BIT_LED; | |
} | |
/* Setup the bit mask accordingly. */ | |
uxLED = 0x01 << uxLED; | |
/* Maintain the current output value. */ | |
if( *puxCurrentValue & uxLED ) | |
{ | |
*puxCurrentValue &= ~uxLED; | |
} | |
else | |
{ | |
*puxCurrentValue |= uxLED; | |
} | |
/* Write the value to the port. */ | |
XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue ); | |
} | |
portEXIT_CRITICAL(); | |
} | |