mirror of https://github.com/ARMmbed/mbed-os.git
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/* mbed Microcontroller Library
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* Copyright (c) 2018 ARM Limited
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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_PN512_TRANSPORT_DRIVER_H
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#define MBED_PN512_TRANSPORT_DRIVER_H
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#include <stdint.h>
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#include "stack/platform/nfc_transport.h"
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namespace mbed {
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namespace nfc {
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/**
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* The PN512 supports multiple transport mechanisms (SPI, I2C, UART): this class provides a unified API across these transports
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*/
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class PN512TransportDriver {
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public:
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/**
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* The PN512TransportDriver delegate
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*/
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struct Delegate {
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/**
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* Called when the PN512 asserts the interrupt line
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*/
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virtual void on_hw_interrupt() {}
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protected:
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~Delegate() {}
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};
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/**
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* Create a PN512TransportDriver instance
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*/
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PN512TransportDriver();
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/**
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* PN512TransportDriver destructor.
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*/
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virtual ~PN512TransportDriver();
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/**
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* Initialize transport driver and perform a chip reset
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*/
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virtual void initialize() = 0;
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/**
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* Retrieve the nfc_transport_t struct for the stack to use
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*
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* @return a pointer to a nfc_transport_t struct
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*/
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virtual nfc_transport_t *get_transport() = 0;
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/**
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* Set this instance's delegate
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*
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* @param[in] delegate the delegate instance to use
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*/
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void set_delegate(Delegate *delegate);
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protected:
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/**
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* An implementation must call this function (can be called from interrupt context)
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* when the PN512 asserts its interrupt line
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*/
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void hw_interrupt();
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private:
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Delegate *_delegate;
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};
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} // namespace nfc
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} // namespace mbed
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#endif
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