+++ /dev/null
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef MBED_BUSINOUT_H
-#define MBED_BUSINOUT_H
-
-#include "DigitalInOut.h"
-
-namespace mbed {
-
-/** A digital input output bus, used for setting the state of a collection of pins
- */
-class BusInOut {
-
-public:
-
- /** Create an BusInOut, connected to the specified pins
- *
- * @param p<n> DigitalInOut pin to connect to bus bit p<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)
- */
- BusInOut(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);
-
- BusInOut(PinName pins[16]);
-
- virtual ~BusInOut();
-
- /* Group: Access Methods */
-
- /** Write the value to the output bus
- *
- * @param value An integer specifying a bit to write for every corresponding DigitalInOut pin
- */
- void write(int value);
-
- /** Read the value currently output on the bus
- *
- * @returns
- * An integer with each bit corresponding to associated DigitalInOut 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
- */
- void mode(PinMode pull);
-
- /** Binary mask of bus pins connected to actual pins (not NC pins)
- * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
- *
- * @returns
- * Binary mask of connected pins
- */
- int mask() {
- return _nc_mask;
- }
-
-#ifdef MBED_OPERATORS
- /** A shorthand for write()
- */
- BusInOut& operator= (int v);
- BusInOut& operator= (BusInOut& rhs);
-
- /** Access to particular bit in random-iterator fashion
- */
- DigitalInOut& operator[] (int index);
-
- /** A shorthand for read()
- */
- operator int();
-#endif
-
-protected:
- DigitalInOut* _pin[16];
-
- /** Mask of bus's NC pins
- * If bit[n] is set to 1 - pin is connected
- * if bit[n] is cleared - pin is not connected (NC)
- */
- int _nc_mask;
-
- /* disallow copy constructor and assignment operators */
-private:
- BusInOut(const BusInOut&);
- BusInOut & operator = (const BusInOut&);
-};
-
-} // namespace mbed
-
-#endif