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Diff: mbed/PortInOut.h
- Revision:
- 17:d1594579eec6
- Parent:
- 0:ad97421fb1fb
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed/PortInOut.h Fri May 19 17:14:07 2017 +0000 @@ -0,0 +1,98 @@ +/* mbed Microcontroller Library - PortInOut + * Copyright (c) 2006-2011 ARM Limited. All rights reserved. + */ + +#ifndef MBED_PORTINOUT_H +#define MBED_PORTINOUT_H + +#include "device.h" + +#if DEVICE_PORTINOUT + +#include "PortNames.h" +#include "PinNames.h" + +namespace mbed { + +/* Class: PortInOut + * A multiple pin digital in/out used to set/read multiple bi-directional pins + */ +class PortInOut { +public: + + /* Constructor: PortInOut + * Create an PortInOut, connected to the specified port + * + * Variables: + * port - Port to connect to (Port0-Port5) + * mask - A bitmask to identify which bits in the port should be included (0 - ignore) + */ + PortInOut(PortName port, int mask = 0xFFFFFFFF); + + /* Function: write + * Write the value to the output port + * + * Variables: + * value - An integer specifying a bit to write for every corresponding port pin + */ + void write(int value); + + /* Function: read + * Read the value currently output on the port + * + * Variables: + * returns - An integer with each bit corresponding to associated port pin setting + */ + int read(); + + /* Function: output + * Set as an output + */ + void output(); + + /* Function: input + * Set as an input + */ + void input(); + + /* Function: mode + * Set the input pin mode + * + * Variables: + * mode - PullUp, PullDown, PullNone, OpenDrain + */ + void mode(PinMode mode); + + /* Function: operator= + * A shorthand for <write> + */ + PortInOut& operator= (int value) { + write(value); + return *this; + } + + PortInOut& operator= (PortInOut& rhs) { + write(rhs.read()); + return *this; + } + + /* Function: operator int() + * A shorthand for <read> + */ + operator int() { + return read(); + } + +private: +#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) + LPC_GPIO_TypeDef *_gpio; +#endif + PortName _port; + uint32_t _mask; +}; + +} // namespace mbed + +#endif + +#endif