/* | |
* 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(); | |
} | |
} | |