text: /*
   * FreeRTOS Kernel V10.2.1
   * Copyright (C) 2019 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!
   */
  
  /*-----------------------------------------------------------
   * Simple parallel port IO routines.
   *-----------------------------------------------------------*/
  
  /* FreeRTOS.org includes. */
  #include "FreeRTOS.h"
  #include "task.h"
  #include "partest.h"
  
  /* Standard includes. */
  #include <string.h>
  
  /* Library includes. */
  #include "stm32f10x_lib.h"
  
  #define partstNUM_LEDs		4
  
  /* Holds the current output state for each of the LEDs. */
  static unsigned char ucBitStates[ partstNUM_LEDs ];
  
  /* Holds the port used by each of the LEDs. */
  static GPIO_TypeDef * uxIO_Port[ partstNUM_LEDs ];
  
  /* Holds the pin used by each of the LEDs. */
  static const unsigned short uxIO_Pins[ partstNUM_LEDs ] = { GPIO_Pin_14, GPIO_Pin_13, GPIO_Pin_3, GPIO_Pin_4 };
  
  /*-----------------------------------------------------------*/
  
  void vParTestInitialise( void )
  {
  GPIO_InitTypeDef GPIO_InitStructure;
  
  	/* Configure PE14, PD13, PD3 and PD4 output push-pull */
  	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_14;
  	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  	GPIO_Init( GPIOE, &GPIO_InitStructure );
  
  	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_13;
  	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  	GPIO_Init( GPIOD, &GPIO_InitStructure );
  
  	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_3 | GPIO_Pin_4;
  	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  	GPIO_Init( GPIOD, &GPIO_InitStructure );
  
  	memset( ucBitStates, 0x00, sizeof( ucBitStates ) );
  
  	uxIO_Port[ 0 ] =  GPIOE;
      uxIO_Port[ 1 ] =  GPIOD;
      uxIO_Port[ 2 ] =  GPIOD;
      uxIO_Port[ 3 ] =  GPIOD;
  }
  /*-----------------------------------------------------------*/
  
  void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
  {
  	if( uxLED < partstNUM_LEDs )
  	{
  		portENTER_CRITICAL();
  		{
  			if( xValue != pdFALSE )
  			{
  				ucBitStates[ uxLED ] = pdTRUE;
  			}
  			else
  			{
  				ucBitStates[ uxLED ] = pdFALSE;
  			}
  
              GPIO_WriteBit( uxIO_Port[ uxLED ], uxIO_Pins[ uxLED ], ucBitStates[ uxLED ] );
  		}
  		portEXIT_CRITICAL();
  	}
  }
  /*-----------------------------------------------------------*/
  
  void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
  {
  	if( uxLED < partstNUM_LEDs )
  	{
  		portENTER_CRITICAL();
  		{
  			ucBitStates[ uxLED ] = !ucBitStates[ uxLED ];
              GPIO_WriteBit( uxIO_Port[ uxLED ], uxIO_Pins[ uxLED ], ucBitStates[ uxLED ] );
  		}
  		portEXIT_CRITICAL();
  	}
  }
  /*-----------------------------------------------------------*/
  
  portBASE_TYPE xGetLEDState( unsigned portBASE_TYPE uxLED )
  {
  	if( uxLED < partstNUM_LEDs )
  	{
  		return ( portBASE_TYPE ) ucBitStates[ uxLED ];
  	}
  	else
  	{
  		return 0;
  	}
  }
  