mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: cpp/PortIn.h
- Revision:
- 0:fd0d7bdfcdc2
- Child:
- 2:143cac498751
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cpp/PortIn.h Tue Nov 20 17:24:08 2012 +0000 @@ -0,0 +1,99 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2012 ARM Limited + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef MBED_PORTIN_H +#define MBED_PORTIN_H + +#include "platform.h" + +#if DEVICE_PORTIN + +#include "port_api.h" + +namespace mbed { + +/** A multiple pin digital input + * + * Example: + * @code + * // Switch on an LED if any of mbed pins 21-26 is high + * + * #include "mbed.h" + * + * PortIn p(Port2, 0x0000003F); // p21-p26 + * DigitalOut ind(LED4); + * + * int main() { + * while(1) { + * int pins = p.read(); + * if(pins) { + * ind = 1; + * } else { + * ind = 0; + * } + * } + * } + * @endcode + */ +class PortIn { +public: + + /** Create an PortIn, 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) + */ + PortIn(PortName port, int mask = 0xFFFFFFFF) { + port_init(&_port, port, mask, PIN_INPUT); + } + + /** Read the value currently output on the port + * + * @returns + * An integer with each bit corresponding to associated port pin setting + */ + int read() { + return port_read(&_port); + } + + /** Set the input pin mode + * + * @param mode PullUp, PullDown, PullNone, OpenDrain + */ + void mode(PinMode mode) { + port_mode(&_port, mode); + } + + /** A shorthand for read() + */ + operator int() { + return read(); + } + +private: + port_t _port; +}; + +} // namespace mbed + +#endif + +#endif