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142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/*
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* FreeRTOS Kernel V10.0.1
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* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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/* Scheduler include files. */
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#include "FreeRTOS.h"
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#include "portable.h"
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/* Demo application include files. */
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#include "partest.h"
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*
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* This is for the demo application which uses port 2 for LED outputs.
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*-----------------------------------------------------------*/
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/* Value for the LED to be off. */
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#define partstLED_OUTPUTS ( ( unsigned char ) 0xff )
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/* P2.0 is not used as an output so there are only 7 LEDs on port 2. */
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#define partstMAX_LEDs ( 7 )
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#define partstALL_OUTPUTS_OFF ( ( unsigned char ) 0 )
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/* Maps the LED outputs used by the standard demo application files to
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convenient outputs for the EDK2329. Mainly this insures that the LED
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used by the Check task is one of the on board LEDs so the demo can be
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executed on an EDK without any modification. */
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static inline unsigned char prvMapLED( unsigned portBASE_TYPE uxLED );
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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/* LED's are connected to port 2. P2.1 and P2.2 are built onto the EDK.
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P2.3 to P2.7 are soldered onto the expansion port. */
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P2DDR = partstLED_OUTPUTS;
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P2DR = partstALL_OUTPUTS_OFF;
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}
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/*-----------------------------------------------------------*/
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/*
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* Described at the top of the file.
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*/
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static inline unsigned char prvMapLED( unsigned portBASE_TYPE uxLED )
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{
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switch( uxLED )
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{
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case 0 : return ( unsigned char ) 2;
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case 1 : return ( unsigned char ) 3;
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case 2 : return ( unsigned char ) 4;
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case 3 : return ( unsigned char ) 5;
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case 4 : return ( unsigned char ) 6;
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case 5 : return ( unsigned char ) 0;
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case 6 : return ( unsigned char ) 1;
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default : return 0;
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}
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}
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/*-----------------------------------------------------------*/
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/*
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* Turn an LED on or off.
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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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unsigned char ucLED;
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if( uxLED < partstMAX_LEDs )
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{
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ucLED = prvMapLED( uxLED );
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/* Set a bit in the required LED position. LED 0 is bit 1. */
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ucLED = ( unsigned char ) 1 << ( ucLED + 1 );
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if( xValue )
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{
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portENTER_CRITICAL();
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P2DR |= ucLED;
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portEXIT_CRITICAL();
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}
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else
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{
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portENTER_CRITICAL();
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P2DR &= ~ucLED;
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portEXIT_CRITICAL();
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}
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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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unsigned char ucLED;
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if( uxLED < partstMAX_LEDs )
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{
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ucLED = prvMapLED( uxLED );
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/* Set a bit in the required LED position. LED 0 is bit 1. */
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ucLED = ( unsigned char ) 1 << ( ucLED + 1 );
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portENTER_CRITICAL();
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{
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if( P2DR & ucLED )
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{
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P2DR &= ~ucLED;
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}
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else
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{
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P2DR |= ucLED;
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}
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}
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portEXIT_CRITICAL();
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}
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}
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