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/*
* FreeRTOS Kernel V10.3.0
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
/*
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();
}
}
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