Modified InOut library

Dependents:   LineSensors

DigitalInOut2.h

Committer:
jmar11
Date:
2014-10-12
Revision:
0:1d15d1ea182e
Child:
1:f3a86fb2a054

File content as of revision 0:1d15d1ea182e:

#ifndef MBED_DIGITALINOUT_H
#define MBED_DIGITALINOUT_H
 
#include "platform.h"
 
#include "gpio_api.h"
 
namespace mbed {
 
/** A digital input/output, used for setting or reading a bi-directional pin
 */
class DigitalInOut2 {
 
public:
    /** Create a DigitalInOut connected to the specified pin
     *
     *  @param pin DigitalInOut pin to connect to
     */
    DigitalInOut(PinName pin) {
        gpio_init(&gpio, pin, PIN_INPUT);
    }
    
    /** Set the output, specified as 0 or 1 (int)
     *
     *  @param value An integer specifying the pin output value, 
     *      0 for logical 0, 1 (or any other non-zero value) for logical 1 
     */
    void write(int value) {
        gpio_write(&gpio, value);
    }
    
    /** Return the output setting, represented as 0 or 1 (int)
     *
     *  @returns
     *    an integer representing the output setting of the pin if it is an output, 
     *    or read the input if set as an input
     */
    int read() {
        return gpio_read(&gpio);
    }
    
    /** Set as an output
     */
    void output() {
        gpio_dir(&gpio, PIN_OUTPUT);
    }
    
    /** Set as an input
     */
    void input() {
        gpio_dir(&gpio, PIN_INPUT);
    }
    
    /** Set the input pin mode
     *
     *  @param mode PullUp, PullDown, PullNone, OpenDrain
     */
    void mode(PinMode pull) {
        gpio_mode(&gpio, pull);
    }
    
#ifdef MBED_OPERATORS
    /** A shorthand for write()
     */
    DigitalInOut& operator= (int value) {
        write(value);
        return *this;
    }
    
    DigitalInOut& operator= (DigitalInOut& rhs) {
        write(rhs.read());
        return *this;
    }
    
    /** A shorthand for read()
     */
    operator int() {
        return read();
    }
#endif

    gpio_t gpio;
};
 
} // namespace mbed
 
#endif