text: //
  // Copyright (c) 2015, Paul R. Swan
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without modification,
  // are permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice,
  //    this list of conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright notice,
  //    this list of conditions and the following disclaimer in the documentation
  //    and/or other materials provided with the distribution.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  // OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  // COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  // TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  // EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  #include "CBus.h"
  
  
  CBus::CBus(
      const UINT8       pinMap[],
      const CONNECTION  connection[],
      UINT16            numOfConnections
  ) : m_pinMap(pinMap),
      m_connection(connection),
      m_numOfConnections(numOfConnections),
      m_pinModeSet(false),
      m_currentPinMode(INPUT)
  {
  }
  
  void
  CBus::pinMode(
      int    mode
  )
  {
      if ( !m_pinModeSet ||
           (mode != m_currentPinMode))
      {
          m_pinModeSet     = true;
          m_currentPinMode = mode;
  
          for (UINT16 uiIndex = 0 ; uiIndex < m_numOfConnections ; uiIndex++)
          {
              ::pinMode(m_pinMap[m_connection[uiIndex].pin], mode);
          }
      }
  }
  
  void
  CBus::digitalWrite(
      UINT16 value
  )
  {
      for (UINT16 uiIndex = 0 ; uiIndex < m_numOfConnections ; uiIndex++)
      {
          int hiLo = ((value >> uiIndex) & 1) ? HIGH : LOW;
  
          ::digitalWrite(m_pinMap[m_connection[uiIndex].pin], hiLo);
      }
  }
  
  void
  CBus::digitalRead(
      UINT16 *value
  )
  {
      UINT16 localValue = 0;
  
      for (UINT16 uiIndex = 0 ; uiIndex < m_numOfConnections ; uiIndex++)
      {
  
          int hiLo = ::digitalRead(m_pinMap[m_connection[uiIndex].pin]);
  
          if (hiLo == HIGH)
          {
              localValue |= (1 << uiIndex);
          }
      }
  
      *value = localValue;
  }
  
  
  