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"
  
  /* Library includes. */
  #include "stm32f10x_lib.h"
  
  #define partstMAX_OUTPUT_LED	( 4 )
  #define partstFIRST_LED			GPIO_Pin_6
  
  static unsigned short usOutputValue = 0;
  
  /*-----------------------------------------------------------*/
  
  void vParTestInitialise( void )
  {
  GPIO_InitTypeDef GPIO_InitStructure;
  
  	/* Configure PC.06, PC.07, PC.08 and PC.09 as output push-pull */
  	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
  	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  	GPIO_Init( GPIOC, &GPIO_InitStructure );
  }
  /*-----------------------------------------------------------*/
  
  void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
  {
  unsigned short usBit;
  
  	vTaskSuspendAll();
  	{
  		if( uxLED < partstMAX_OUTPUT_LED )
  		{
  			usBit = partstFIRST_LED << uxLED;
  
  			if( xValue == pdFALSE )
  			{
  				usBit ^= ( unsigned short ) 0xffff;
  				usOutputValue &= usBit;
  			}
  			else
  			{
  				usOutputValue |= usBit;
  			}
  
  			GPIO_Write( GPIOC, usOutputValue );
  		}	
  	}
  	xTaskResumeAll();
  }
  /*-----------------------------------------------------------*/
  
  void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
  {
  unsigned short usBit;
  
  	vTaskSuspendAll();
  	{
  		if( uxLED < partstMAX_OUTPUT_LED )
  		{
  			usBit = partstFIRST_LED << uxLED;
  
  			if( usOutputValue & usBit )
  			{
  				usOutputValue &= ~usBit;
  			}
  			else
  			{
  				usOutputValue |= usBit;
  			}
  
  			GPIO_Write( GPIOC, usOutputValue );
  		}
  	}
  	xTaskResumeAll();
  }
  /*-----------------------------------------------------------*/
  
  