Diff: source/main.cpp

Revision:

0:86f202e07059

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/main.cpp	Mon Sep 24 17:09:39 2018 +0100
@@ -0,0 +1,118 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2018-2018 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.
+ */
+
+#include "events/EventQueue.h"
+
+#include "nfc/ndef/MessageBuilder.h"
+#include "nfc/ndef/common/URI.h"
+#include "nfc/ndef/common/util.h"
+
+#include "NFCEEPROM.h"
+
+#include "EEPROMDriver.h"
+
+using events::EventQueue;
+
+using mbed::nfc::NFCEEPROM;
+using mbed::nfc::NFCEEPROMDriver;
+using mbed::Span;
+
+using mbed::nfc::ndef::MessageBuilder;
+using mbed::nfc::ndef::common::URI;
+using mbed::nfc::ndef::common::span_from_cstr;
+
+/* URL that will be written into the tag */
+const char url_string[] = "mbed.com";
+
+class EEPROMExample : mbed::nfc::NFCEEPROM::Delegate
+{
+public:
+    EEPROMExample(events::EventQueue& queue, NFCEEPROMDriver& eeprom_driver) :
+        _ndef_buffer(),
+        _eeprom(&eeprom_driver, &queue, _ndef_buffer),
+        _queue(queue)
+    { }
+
+    void run()
+    {
+        if (_eeprom.initialize() != NFC_OK) {
+            printf("failed to initialise\r\n");
+            _queue.break_dispatch();
+        }
+
+        _eeprom.set_delegate(this);
+
+        _queue.call(&_eeprom, &NFCEEPROM::write_ndef_message);
+    }
+
+private:
+    virtual void on_ndef_message_written(nfc_err_t result) {
+        if (result == NFC_OK) {
+            printf("message written successfully\r\n");
+        } else {
+            printf("failed to write (error: %d)\r\n", result);
+        }
+
+        _queue.call(&_eeprom, &NFCEEPROM::read_ndef_message);
+    }
+
+    virtual void on_ndef_message_read(nfc_err_t result) {
+        if (result == NFC_OK) {
+            printf("message read successfully\r\n");
+        } else {
+            printf("failed to read (error: %d)\r\n", result);
+        }
+    }
+
+    virtual void parse_ndef_message(const Span<const uint8_t> &buffer) {
+        printf("Received an ndef message of size %d\r\n", buffer.size());
+    }
+
+    virtual size_t build_ndef_message(const Span<uint8_t> &buffer) {
+        printf("Building an ndef message\r\n");
+
+        /* create a message containing the URL */
+
+        MessageBuilder builder(buffer);
+
+        /* URI expected a non-null terminated string  so we use a helper function that casts
+         * the pointer into a Span of size smaller by one */
+        URI uri(URI::HTTPS_WWW, span_from_cstr(url_string));
+
+        uri.append_as_record(builder, true);
+
+        return builder.get_message().size();
+    }
+
+private:
+    uint8_t _ndef_buffer[1024];
+    NFCEEPROM _eeprom;
+    EventQueue& _queue;
+};
+
+int main()
+{
+    EventQueue queue;
+    NFCEEPROMDriver& eeprom_driver = get_eeprom_driver(queue);
+
+    EEPROMExample example(queue, eeprom_driver);
+
+    example.run();
+    queue.dispatch_forever();
+
+    return 0;
+}
+