NfcControllerToEEPROMAdapter.h

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2018-2018 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #ifndef NFCCONTROLLER2EEPROMADAPTER_H_
00018 #define NFCCONTROLLER2EEPROMADAPTER_H_
00019 
00020 #include <algorithm>
00021 
00022 #include "nfc/NFCController.h"
00023 #include "nfc/NFCEEPROMDriver.h"
00024 #include "nfc/NFCRemoteInitiator.h"
00025 
00026 namespace mbed {
00027 namespace nfc {
00028 
00029 /**
00030  * Adapt an NFCController into an NFCEEPROMDriver.
00031  */
00032 class ControllerToEEPROMDriverAdapter :
00033     public NFCEEPROMDriver,
00034     private NFCController::Delegate,
00035     private NFCRemoteInitiator::Delegate
00036 {
00037 public:
00038     ControllerToEEPROMDriverAdapter(
00039         NFCController &controller,
00040         const Span<uint8_t> &buffer
00041     );
00042 
00043     virtual ~ControllerToEEPROMDriverAdapter();
00044 
00045     /* ------------------------------------------------------------------------
00046      * Implementation of NFCEEPROMDriver
00047      */
00048     virtual void reset();
00049 
00050     virtual size_t read_max_size();
00051 
00052     virtual void start_session(bool force);
00053 
00054     virtual void end_session();
00055 
00056     virtual void read_bytes(uint32_t address, uint8_t *bytes, size_t count);
00057 
00058     virtual void write_bytes(uint32_t address, const uint8_t *bytes, size_t count);
00059 
00060     virtual void read_size();
00061 
00062     virtual void write_size(size_t count);
00063 
00064     virtual void erase_bytes(uint32_t address, size_t count);
00065 
00066 private:
00067     /* ------------------------------------------------------------------------
00068      * Implementation of NFCRemoteInitiator::Delegate
00069      */
00070     virtual void on_connected();
00071 
00072     virtual void on_disconnected();
00073 
00074     virtual void parse_ndef_message(const Span<const uint8_t> &buffer);
00075 
00076     virtual size_t build_ndef_message(const Span<uint8_t> &buffer);
00077 
00078     /* ------------------------------------------------------------------------
00079      * Implementation of NFCController::Delegate
00080      */
00081     virtual void on_discovery_terminated(
00082         nfc_discovery_terminated_reason_t reason
00083     );
00084 
00085     virtual void on_nfc_initiator_discovered(
00086         const SharedPtr<NFCRemoteInitiator> &nfc_initiator
00087     );
00088 
00089     NFCController& _nfc_controller;
00090     Span<uint8_t> _eeprom_buffer;
00091     size_t _current_eeprom_size;
00092     bool _session_opened;
00093     SharedPtr<NFCRemoteInitiator> _nfc_remote_initiator;
00094 };
00095 
00096 }  // namespace nfc
00097 }  // namespace mbed
00098 
00099 
00100 #endif /* NFCCONTROLLER2EEPROMADAPTER_H_ */