File content as of revision 8:c14af7958ef5:

/* mbed Microcontroller Library - PortInOut
 * Copyright (c) 2006-2011 ARM Limited. All rights reserved.
 */
#ifndef MBED_PORTINOUT_H
#define MBED_PORTINOUT_H

#include "platform.h"

#if DEVICE_PORTINOUT

#include "port_api.h"

namespace mbed {

/** A multiple pin digital in/out used to set/read multiple bi-directional pins
 */
class PortInOut {
public:

    /** Create an PortInOut, connected to the specified port
     *
     *  @param port Port to connect to (Port0-Port5)
     *  @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
     */ 
    PortInOut(PortName port, int mask = 0xFFFFFFFF);
    
    /** Write the value to the output port
     *
     *  @param value An integer specifying a bit to write for every corresponding port pin
     */    
    void write(int value);
    
    /** Read the value currently output on the port
     *
     *  @returns
     *    An integer with each bit corresponding to associated port pin setting
     */
    int read();
    
    /** Set as an output
     */
    void output();
    
    /** Set as an input
     */
    void input();
    
    /** Set the input pin mode
     *
     *  @param mode PullUp, PullDown, PullNone, OpenDrain
     */
    void mode(PinMode mode);
    
    /** A shorthand for write()
     */    
    PortInOut& operator= (int value) {
        write(value);
        return *this;
    }
    
    PortInOut& operator= (PortInOut& rhs) {
        write(rhs.read());
        return *this;
    }
    
    /** A shorthand for read()
     */
    operator int() { 
        return read();
    }

private:
    port_object _port;
};

} // namespace mbed

#endif

#endif