FishduinoOutPin.h

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/*
  This module represents output pins on a FischerTechnik interface.

  IMPORTANT: These store a reference to a Fishduino manager, but there is no
  code to guard against orphaning this reference. Make sure you don't call
  any of the member functions after the manager is destroyed!

  NOTE: These only set the bits in an Fishduino manager, they don't update
  the actual interface outputs; you have to call the appropriate function in
  the manager to do that.
*/


#ifndef _FISHDUINOOUTPIN_H_
#define _FISHDUINOOUTPIN_H_


/////////////////////////////////////////////////////////////////////////////
// INCLUDES
/////////////////////////////////////////////////////////////////////////////


#include "FishduinoMgr.h"


/////////////////////////////////////////////////////////////////////////////
// OUTPUT PINS
/////////////////////////////////////////////////////////////////////////////


//---------------------------------------------------------------------------
// Output Pin(s)
//
// An instance of this type can be used to set and reset multiple output
// pins at once.
class FishduinoOutPin
{
#ifndef NDEBUG
public:
#else
protected:
#endif
  FishduinoMgr   &m_mgr;                // Manager to work with
  byte            m_intindex;           // Interface index
  byte            m_mask;               // Bits to set/reset

public:
  //-------------------------------------------------------------------------
  // Constants for better readability
  //
  // Use these as pin number to connect a device to the corresponding output
  // pin.
  enum {
    O1 = 0,
    O2,
    O3,
    O4,
    O5,
    O6,
    O7,
    O8,

    // For those who don't like to use the letter O as identifier:...
    Q1 = 0,
    Q2,
    Q3,
    Q4,
    Q5,
    Q6,
    Q7,
    Q8,
  };

public:
  //-------------------------------------------------------------------------
  // Constructor based on single bit
  FishduinoOutPin(
    FishduinoMgr &mgr,                  // Manager to work with
    byte intindex,                      // Interface index
    byte pin)                           // Pin number (0..7)
    : m_mgr(mgr)
    , m_intindex(intindex)
    , m_mask(1 << pin)
  {
    // Nothing to do here
  }

public:
  //-------------------------------------------------------------------------
  // Add a bit to the mask
  void
  AddPin(
    byte pin)                           // Pin to add
  {
    m_mask |= 1 << pin;
  }

public:
  //-------------------------------------------------------------------------
  // Remove a bit from the mask
  void
  RemovePin(
    byte pin)                           // Pin to remove
  {
    m_mask &= ~(1 << pin);
  }

public:
  //-------------------------------------------------------------------------
  // Set these bits on the interface
  //
  // Note: this doesn't actually update the outputs, you need to call the
  // appropriate update function on the manager for that.
  void
  Set(
    bool value)                         // True=high, false=low
  {
    m_mgr.SetOutputMask(m_intindex, value ? m_mask : 0, value ? 0 : m_mask);
  }
};


/////////////////////////////////////////////////////////////////////////////
// END
/////////////////////////////////////////////////////////////////////////////


#endif