Diff: micronfcboard.cpp

Revision:

0:07fa9c0dd549

Child:

1:1d246e0872c6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/micronfcboard.cpp	Fri Apr 24 12:57:23 2015 +0000
@@ -0,0 +1,252 @@
+/**
+ * \file micronfcboard.cpp
+ * \copyright Copyright (c) AppNearMe Ltd 2015
+ * \author Donatien Garnier
+ */
+
+#include "micronfcboard.h"
+
+#define STATUS_POLLING          (1 << 0)
+#define STATUS_CONNECTED        (1 << 1)
+#define STATUS_NDEF_PRESENT     (1 << 2)
+#define STATUS_NDEF_READABLE    (1 << 3)
+#define STATUS_NDEF_WRITEABLE   (1 << 4)
+#define STATUS_NDEF_BUSY        (1 << 5)
+#define STATUS_NDEF_SUCCESS     (1 << 6)
+
+#define STATUS_TYPE_MASK        (0xFF << 8)
+#define STATUS_TYPE2            (2 << 8)
+#define STATUS_P2P              (8 << 8)
+
+#define RECORD_URI  1
+#define RECORD_TEXT 2
+#define RECORD_SP   3
+
+MicroNFCBoard::MicroNFCBoard(PinName mosi, PinName miso, PinName sck, PinName cs, PinName irq) : _transport(mosi, miso, sck, cs, irq)
+{
+
+}
+
+void MicroNFCBoard::init()
+{
+  _transport.init();
+  _status = _transport.status();
+}
+
+void MicroNFCBoard::setLeds(bool led1, bool led2)
+{
+  _transport.leds(led1, led2);
+}
+
+void MicroNFCBoard::updateStatus()
+{
+  if(_transport.statusChanged())
+  {
+    _status = _transport.status();
+  }
+}
+
+bool MicroNFCBoard::connected()
+{
+  updateStatus();
+  return _status & STATUS_CONNECTED;
+}
+
+bool MicroNFCBoard::type2()
+{
+  updateStatus();
+  return (_status & STATUS_TYPE_MASK) == STATUS_TYPE2;
+}
+
+bool MicroNFCBoard::p2p()
+{
+  updateStatus();
+  return (_status & STATUS_TYPE_MASK) == STATUS_P2P;
+}
+
+bool MicroNFCBoard::polling()
+{
+  updateStatus();
+  return _status & STATUS_POLLING;
+}
+
+bool MicroNFCBoard::ndefReadable()
+{
+  updateStatus();
+  return _status & STATUS_NDEF_READABLE;
+}
+
+bool MicroNFCBoard::ndefWriteable()
+{
+  updateStatus();
+  return _status & STATUS_NDEF_WRITEABLE;
+}
+
+bool MicroNFCBoard::ndefPresent()
+{
+  updateStatus();
+  return _status & STATUS_NDEF_PRESENT;
+}
+
+bool MicroNFCBoard::ndefBusy()
+{
+  updateStatus();
+  return _status & STATUS_NDEF_BUSY;
+}
+
+bool MicroNFCBoard::ndefSuccess()
+{
+  updateStatus();
+  return _status & STATUS_NDEF_SUCCESS;
+}
+
+void MicroNFCBoard::startPolling()
+{
+  _transport.nfcPoll(true);
+}
+
+void MicroNFCBoard::stopPolling()
+{
+  _transport.nfcPoll(false);
+}
+
+void MicroNFCBoard::ndefRead()
+{
+  _transport.nfcOperation(true, false);
+}
+
+void MicroNFCBoard::ndefWrite()
+{
+  _transport.nfcOperation(false, true);
+}
+
+bool MicroNFCBoard::readNdefUri(char* uri, size_t maxUriLength)
+{
+  if(!ndefPresent())
+  {
+    return false;
+  }
+
+  size_t recordCount = 0;
+  _transport.nfcGetMessageInfo(&recordCount);
+
+
+  size_t recordNumber = 0;
+  uint16_t info[4];
+  uint16_t type;
+  size_t infoCount = 4;
+
+  for(recordNumber = 0; recordNumber < recordCount; recordNumber++)
+  {
+    _transport.nfcGetRecordInfo(recordNumber, &type, info, infoCount);
+    if(type == RECORD_URI)
+    {
+      break;
+    }
+    if(type == RECORD_SP)
+    {
+      recordCount += info[1];
+    }
+  }
+  if(recordNumber == recordCount)
+  {
+    return false;
+  }
+
+  //Recover prefix
+  size_t length = maxUriLength - 1;
+  _transport.nfcDecodePrefix(info[0], uri, &length);
+
+  maxUriLength -= length;
+  uri += length;
+
+  if(maxUriLength <= 1)
+  {
+    return false;
+  }
+
+  length = info[1];
+  if(length > maxUriLength - 1)
+  {
+    return false;
+  }
+
+  size_t off = 0;
+  while(length > 0)
+  {
+    size_t cpyLength = length;
+    if(cpyLength > 32)
+    {
+      cpyLength = 32;
+    }
+    _transport.nfcGetRecordData(recordNumber, 0, off, (uint8_t*)uri, cpyLength);
+    length -= cpyLength;
+    off += cpyLength;
+    uri += cpyLength;
+  }
+
+  uri[0] = '\0';
+
+  return true;
+}
+
+bool MicroNFCBoard::readNdefText(char* text, size_t maxTextLength)
+{
+  if(!ndefPresent())
+  {
+    return false;
+  }
+
+  size_t recordCount = 0;
+  _transport.nfcGetMessageInfo(&recordCount);
+
+
+  size_t recordNumber = 0;
+  uint16_t info[4];
+  uint16_t type;
+  size_t infoCount = 4;
+
+  for(recordNumber = 0; recordNumber < recordCount; recordNumber++)
+  {
+    _transport.nfcGetRecordInfo(recordNumber, &type, info, infoCount);
+    if(type == RECORD_TEXT)
+    {
+      break;
+    }
+    if(type == RECORD_SP)
+    {
+      recordCount += info[1];
+    }
+  }
+  if(recordNumber == recordCount)
+  {
+    return false;
+  }
+
+  size_t length = info[2];
+  if(length > maxTextLength - 1)
+  {
+    return false;
+  }
+
+  size_t off = 0;
+  while(length > 0)
+  {
+    size_t cpyLength = length;
+    if(cpyLength > 32)
+    {
+      cpyLength = 32;
+    }
+    _transport.nfcGetRecordData(recordNumber, 1, off, (uint8_t*)text, cpyLength);
+    length -= cpyLength;
+    off += cpyLength;
+    text += cpyLength;
+  }
+
+  text[0] = '\0';
+
+  return true;
+}
+
+
+