Demonstration of possible usage of the NFC EEPROM class (including support for ST25DV NFC chip)
Dependencies: eeprom_driver
source/main.cpp@6:462737ad2938, 2020-01-28 (annotated)
- Committer:
- apalmieri
- Date:
- Tue Jan 28 16:08:05 2020 +0000
- Revision:
- 6:462737ad2938
- Parent:
- 0:86f202e07059
Add ST25DV driver support
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:86f202e07059 | 1 | /* mbed Microcontroller Library |
mbed_official | 0:86f202e07059 | 2 | * Copyright (c) 2018-2018 ARM Limited |
mbed_official | 0:86f202e07059 | 3 | * |
mbed_official | 0:86f202e07059 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 0:86f202e07059 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 0:86f202e07059 | 6 | * You may obtain a copy of the License at |
mbed_official | 0:86f202e07059 | 7 | * |
mbed_official | 0:86f202e07059 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 0:86f202e07059 | 9 | * |
mbed_official | 0:86f202e07059 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 0:86f202e07059 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 0:86f202e07059 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 0:86f202e07059 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 0:86f202e07059 | 14 | * limitations under the License. |
mbed_official | 0:86f202e07059 | 15 | */ |
mbed_official | 0:86f202e07059 | 16 | |
mbed_official | 0:86f202e07059 | 17 | #include "events/EventQueue.h" |
mbed_official | 0:86f202e07059 | 18 | |
mbed_official | 0:86f202e07059 | 19 | #include "nfc/ndef/MessageBuilder.h" |
mbed_official | 0:86f202e07059 | 20 | #include "nfc/ndef/common/URI.h" |
mbed_official | 0:86f202e07059 | 21 | #include "nfc/ndef/common/util.h" |
mbed_official | 0:86f202e07059 | 22 | |
mbed_official | 0:86f202e07059 | 23 | #include "NFCEEPROM.h" |
mbed_official | 0:86f202e07059 | 24 | |
mbed_official | 0:86f202e07059 | 25 | #include "EEPROMDriver.h" |
mbed_official | 0:86f202e07059 | 26 | |
mbed_official | 0:86f202e07059 | 27 | using events::EventQueue; |
mbed_official | 0:86f202e07059 | 28 | |
mbed_official | 0:86f202e07059 | 29 | using mbed::nfc::NFCEEPROM; |
mbed_official | 0:86f202e07059 | 30 | using mbed::nfc::NFCEEPROMDriver; |
mbed_official | 0:86f202e07059 | 31 | using mbed::Span; |
mbed_official | 0:86f202e07059 | 32 | |
mbed_official | 0:86f202e07059 | 33 | using mbed::nfc::ndef::MessageBuilder; |
mbed_official | 0:86f202e07059 | 34 | using mbed::nfc::ndef::common::URI; |
mbed_official | 0:86f202e07059 | 35 | using mbed::nfc::ndef::common::span_from_cstr; |
mbed_official | 0:86f202e07059 | 36 | |
mbed_official | 0:86f202e07059 | 37 | /* URL that will be written into the tag */ |
mbed_official | 0:86f202e07059 | 38 | const char url_string[] = "mbed.com"; |
mbed_official | 0:86f202e07059 | 39 | |
mbed_official | 0:86f202e07059 | 40 | class EEPROMExample : mbed::nfc::NFCEEPROM::Delegate |
mbed_official | 0:86f202e07059 | 41 | { |
mbed_official | 0:86f202e07059 | 42 | public: |
mbed_official | 0:86f202e07059 | 43 | EEPROMExample(events::EventQueue& queue, NFCEEPROMDriver& eeprom_driver) : |
mbed_official | 0:86f202e07059 | 44 | _ndef_buffer(), |
mbed_official | 0:86f202e07059 | 45 | _eeprom(&eeprom_driver, &queue, _ndef_buffer), |
mbed_official | 0:86f202e07059 | 46 | _queue(queue) |
mbed_official | 0:86f202e07059 | 47 | { } |
mbed_official | 0:86f202e07059 | 48 | |
mbed_official | 0:86f202e07059 | 49 | void run() |
mbed_official | 0:86f202e07059 | 50 | { |
mbed_official | 0:86f202e07059 | 51 | if (_eeprom.initialize() != NFC_OK) { |
mbed_official | 0:86f202e07059 | 52 | printf("failed to initialise\r\n"); |
mbed_official | 0:86f202e07059 | 53 | _queue.break_dispatch(); |
mbed_official | 0:86f202e07059 | 54 | } |
mbed_official | 0:86f202e07059 | 55 | |
mbed_official | 0:86f202e07059 | 56 | _eeprom.set_delegate(this); |
mbed_official | 0:86f202e07059 | 57 | |
mbed_official | 0:86f202e07059 | 58 | _queue.call(&_eeprom, &NFCEEPROM::write_ndef_message); |
mbed_official | 0:86f202e07059 | 59 | } |
mbed_official | 0:86f202e07059 | 60 | |
mbed_official | 0:86f202e07059 | 61 | private: |
mbed_official | 0:86f202e07059 | 62 | virtual void on_ndef_message_written(nfc_err_t result) { |
mbed_official | 0:86f202e07059 | 63 | if (result == NFC_OK) { |
mbed_official | 0:86f202e07059 | 64 | printf("message written successfully\r\n"); |
mbed_official | 0:86f202e07059 | 65 | } else { |
mbed_official | 0:86f202e07059 | 66 | printf("failed to write (error: %d)\r\n", result); |
mbed_official | 0:86f202e07059 | 67 | } |
mbed_official | 0:86f202e07059 | 68 | |
mbed_official | 0:86f202e07059 | 69 | _queue.call(&_eeprom, &NFCEEPROM::read_ndef_message); |
mbed_official | 0:86f202e07059 | 70 | } |
mbed_official | 0:86f202e07059 | 71 | |
mbed_official | 0:86f202e07059 | 72 | virtual void on_ndef_message_read(nfc_err_t result) { |
mbed_official | 0:86f202e07059 | 73 | if (result == NFC_OK) { |
mbed_official | 0:86f202e07059 | 74 | printf("message read successfully\r\n"); |
mbed_official | 0:86f202e07059 | 75 | } else { |
mbed_official | 0:86f202e07059 | 76 | printf("failed to read (error: %d)\r\n", result); |
mbed_official | 0:86f202e07059 | 77 | } |
mbed_official | 0:86f202e07059 | 78 | } |
mbed_official | 0:86f202e07059 | 79 | |
mbed_official | 0:86f202e07059 | 80 | virtual void parse_ndef_message(const Span<const uint8_t> &buffer) { |
mbed_official | 0:86f202e07059 | 81 | printf("Received an ndef message of size %d\r\n", buffer.size()); |
mbed_official | 0:86f202e07059 | 82 | } |
mbed_official | 0:86f202e07059 | 83 | |
mbed_official | 0:86f202e07059 | 84 | virtual size_t build_ndef_message(const Span<uint8_t> &buffer) { |
mbed_official | 0:86f202e07059 | 85 | printf("Building an ndef message\r\n"); |
mbed_official | 0:86f202e07059 | 86 | |
mbed_official | 0:86f202e07059 | 87 | /* create a message containing the URL */ |
mbed_official | 0:86f202e07059 | 88 | |
mbed_official | 0:86f202e07059 | 89 | MessageBuilder builder(buffer); |
mbed_official | 0:86f202e07059 | 90 | |
mbed_official | 0:86f202e07059 | 91 | /* URI expected a non-null terminated string so we use a helper function that casts |
mbed_official | 0:86f202e07059 | 92 | * the pointer into a Span of size smaller by one */ |
mbed_official | 0:86f202e07059 | 93 | URI uri(URI::HTTPS_WWW, span_from_cstr(url_string)); |
mbed_official | 0:86f202e07059 | 94 | |
mbed_official | 0:86f202e07059 | 95 | uri.append_as_record(builder, true); |
mbed_official | 0:86f202e07059 | 96 | |
mbed_official | 0:86f202e07059 | 97 | return builder.get_message().size(); |
mbed_official | 0:86f202e07059 | 98 | } |
mbed_official | 0:86f202e07059 | 99 | |
mbed_official | 0:86f202e07059 | 100 | private: |
mbed_official | 0:86f202e07059 | 101 | uint8_t _ndef_buffer[1024]; |
mbed_official | 0:86f202e07059 | 102 | NFCEEPROM _eeprom; |
mbed_official | 0:86f202e07059 | 103 | EventQueue& _queue; |
mbed_official | 0:86f202e07059 | 104 | }; |
mbed_official | 0:86f202e07059 | 105 | |
mbed_official | 0:86f202e07059 | 106 | int main() |
mbed_official | 0:86f202e07059 | 107 | { |
mbed_official | 0:86f202e07059 | 108 | EventQueue queue; |
mbed_official | 0:86f202e07059 | 109 | NFCEEPROMDriver& eeprom_driver = get_eeprom_driver(queue); |
mbed_official | 0:86f202e07059 | 110 | |
mbed_official | 0:86f202e07059 | 111 | EEPROMExample example(queue, eeprom_driver); |
mbed_official | 0:86f202e07059 | 112 | |
mbed_official | 0:86f202e07059 | 113 | example.run(); |
mbed_official | 0:86f202e07059 | 114 | queue.dispatch_forever(); |
mbed_official | 0:86f202e07059 | 115 | |
mbed_official | 0:86f202e07059 | 116 | return 0; |
mbed_official | 0:86f202e07059 | 117 | } |
mbed_official | 0:86f202e07059 | 118 |