File content as of revision 8:c14af7958ef5:

/* mbed Microcontroller Library - DigitalIn
 * Copyright (c) 2007-2009 ARM Limited. All rights reserved.
 */
#ifndef MBED_BUSIN_H
#define MBED_BUSIN_H

#include "platform.h"
#include "DigitalIn.h"

namespace mbed {

/** A digital input bus, used for reading the state of a collection of pins
 */
class BusIn {

public:
    /* Group: Configuration Methods */

    /** Create an BusIn, connected to the specified pins
     *
     * @param <n> DigitalIn pin to connect to bus bit <n> (p5-p30, NC)
     *
     * @note
     *  It is only required to specify as many pin variables as is required
     *  for the bus; the rest will default to NC (not connected)
     */ 
    BusIn(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
          PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
          PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
          PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);

    BusIn(PinName pins[16]);
    
    virtual ~BusIn();
    
    /** Read the value of the input bus
     *
     *  @returns
     *   An integer with each bit corresponding to the value read from the associated DigitalIn pin
     */
    int read();

#ifdef MBED_OPERATORS
    /** A shorthand for read()
     */
    operator int();
#endif

protected:
    DigitalIn* _pin[16];
};

} // namespace mbed

#endif