mirror of https://github.com/ARMmbed/mbed-os.git
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/*
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* Mbed-OS Microcontroller Library
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* Copyright (c) 2021 Embedded Planet
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* Copyright (c) 2021 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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#ifndef MBED_INTERFACE_DIGITALINOUT_H_
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#define MBED_INTERFACE_DIGITALINOUT_H_
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#include "PinNames.h"
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namespace mbed {
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class DigitalInOut;
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namespace interface {
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#ifdef FEATURE_EXPERIMENTAL_API
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// TODO - move method doxygen comments to interface once this polymorphism is mainstream
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// Pure interface definition for DigitalInOut
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struct DigitalInOut {
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virtual ~DigitalInOut() = default;
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virtual void write(int value) = 0;
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virtual int read() = 0;
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virtual void output() = 0;
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virtual void input() = 0;
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virtual void mode(PinMode pull) = 0;
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virtual int is_connected() = 0;
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DigitalInOut &operator= (int value)
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{
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// Underlying implementation is responsible for thread-safety
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write(value);
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return *this;
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}
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DigitalInOut &operator= (DigitalInOut &rhs)
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{
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// Underlying implementation is responsible for thread-safety
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write(rhs.read());
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return *this;
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}
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operator int()
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{
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// Underlying implementation is responsible for thread-safety
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return read();
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}
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};
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#else
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using DigitalInOut = ::mbed::DigitalInOut;
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#endif /* FEATURE_EXPERIMENTAL_API */
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} // namespace interface
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} // namespace mbed
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#endif /* MBED_INTERFACE_DIGITALINOUT_H_ */
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