Diff: mifare/RWDMifare.cpp

Revision:

0:fd63457452f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mifare/RWDMifare.cpp	Wed Jul 28 11:02:36 2010 +0000
@@ -0,0 +1,87 @@
+/*
+Copyright (c) 2010 ARM Limited
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "RWDMifare.h"
+
+RWDMifare::RWDMifare(PinName tx, PinName rx, PinName cts) : RWDModule(tx, rx, cts)
+{
+
+}
+
+RWDMifare::~RWDMifare()
+{
+
+}
+  
+RWDMifare::RWDMifareErr RWDMifare::init()
+{
+  const uint8_t config[] = {0x03, 0x00}; //Configure ready for Mifare Op (0x00 to addr 0x03 in EEPROM)
+  uint8_t resp[64] = {0};
+  //Cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf
+  //Command 'P': cf p11
+  //EEPROM parameters: cf p12
+  //Ack check: cf p13
+  command(0x50, config, 2, resp, 0, 0x80, 0x89); //Program EEPROM command is 0x50 ('P')
+  while(!ready()) //Wait for a response
+  {
+
+  }
+
+  if(!result()) //If this fails, there is something wrong with the hardware
+  {
+    return MIFARE_HW;
+  }
+  
+  return MIFARE_OK;
+}
+  
+RWDMifare::RWDMifareErr RWDMifare::getUID(uint8_t* pUID, size_t* pLen) //pUID must be at least 10-bytes long 
+//(A Mifare UID can either be 4, 7, or 10 bytes long)
+//This reader does not support 10 bytes uids
+{
+  //Cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf
+  //Command 'U': cf p19
+  //Ack check: cf p13
+  command(0x55, NULL, 0, pUID, 7, 0x86, 0x86); //UID command is 0x55 ('U')
+  while(!ready()) //Wait for a response
+  {
+
+  }
+    
+  if(!result()) //Error detected, there is no card in field
+  {
+    return MIFARE_NOCARD;
+  }
+  
+  printf("Got card.\n");
+    
+  //Checks UID length returned by reader
+  int i;
+  for(i = 0; i < 7; i++)
+  {
+    if(pUID[i] == 0) //End of UID, cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf p19
+      break;
+  }
+  *pLen = i;
+  
+  return MIFARE_OK;
+}