Ben Zhang / Mbed 2 deprecated readMifare

Porting from Arduino Platform to mbed KL25Z. Original Source: https://github.com/adafruit/Adafruit-PN532

Dependencies:   mbed

Fork of readMifare by Interactive Device Design

main.cpp@1:fb72a2f7cab5, 2014-09-19 (annotated)

Committer:
nebgnahz
Date:
Fri Sep 19 05:09:50 2014 +0000
Revision:
1:fb72a2f7cab5
Parent:
0:54bf4b21c7fa 
code clean up and documentation fix.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nebgnahz 1:fb72a2f7cab5 1 /**************************************************************************/
nebgnahz 1:fb72a2f7cab5 2 /*!
nebgnahz 0:54bf4b21c7fa 3
nebgnahz 1:fb72a2f7cab5 4 @file main.cpp
nebgnahz 1:fb72a2f7cab5 5 @author Adafruit Industries
nebgnahz 1:fb72a2f7cab5 6 @modified_by Ben Zhang <benzh@eecs.berkeley.edu>
nebgnahz 1:fb72a2f7cab5 7 @license BSD (see license.txt)
nebgnahz 1:fb72a2f7cab5 8
nebgnahz 0:54bf4b21c7fa 9 This example will wait for any ISO14443A card or tag, and
nebgnahz 0:54bf4b21c7fa 10 depending on the size of the UID will attempt to read from it.
nebgnahz 0:54bf4b21c7fa 11
nebgnahz 0:54bf4b21c7fa 12 If the card has a 4-byte UID it is probably a Mifare
nebgnahz 0:54bf4b21c7fa 13 Classic card, and the following steps are taken:
nebgnahz 0:54bf4b21c7fa 14
nebgnahz 0:54bf4b21c7fa 15 - Authenticate block 4 (the first block of Sector 1) using
nebgnahz 0:54bf4b21c7fa 16 the default KEYA of 0XFF 0XFF 0XFF 0XFF 0XFF 0XFF
nebgnahz 0:54bf4b21c7fa 17 - If authentication succeeds, we can then read any of the
nebgnahz 0:54bf4b21c7fa 18 4 blocks in that sector (though only block 4 is read here)
nebgnahz 0:54bf4b21c7fa 19
nebgnahz 0:54bf4b21c7fa 20 If the card has a 7-byte UID it is probably a Mifare
nebgnahz 0:54bf4b21c7fa 21 Ultralight card, and the 4 byte pages can be read directly.
nebgnahz 0:54bf4b21c7fa 22 Page 4 is read by default since this is the first 'general-
nebgnahz 0:54bf4b21c7fa 23 purpose' page on the tags.
nebgnahz 0:54bf4b21c7fa 24
nebgnahz 0:54bf4b21c7fa 25
nebgnahz 0:54bf4b21c7fa 26 This is an example sketch for the Adafruit PN532 NFC/RFID breakout boards
nebgnahz 0:54bf4b21c7fa 27 This library works with the Adafruit NFC breakout
nebgnahz 0:54bf4b21c7fa 28 ----> https://www.adafruit.com/products/364
nebgnahz 0:54bf4b21c7fa 29
nebgnahz 0:54bf4b21c7fa 30 Check out the links above for our tutorials and wiring diagrams
nebgnahz 0:54bf4b21c7fa 31 These chips use SPI to communicate, 4 required to interface
nebgnahz 0:54bf4b21c7fa 32
nebgnahz 0:54bf4b21c7fa 33 Adafruit invests time and resources providing this open source code,
nebgnahz 0:54bf4b21c7fa 34 please support Adafruit and open-source hardware by purchasing
nebgnahz 0:54bf4b21c7fa 35 products from Adafruit!
nebgnahz 0:54bf4b21c7fa 36
nebgnahz 0:54bf4b21c7fa 37 */
nebgnahz 0:54bf4b21c7fa 38 /**************************************************************************/
nebgnahz 0:54bf4b21c7fa 39
nebgnahz 0:54bf4b21c7fa 40 #include "mbed.h"
nebgnahz 0:54bf4b21c7fa 41 #include "Adafruit_PN532.h"
nebgnahz 0:54bf4b21c7fa 42
nebgnahz 0:54bf4b21c7fa 43 #define SS PTD0
nebgnahz 1:fb72a2f7cab5 44 // PTD1 is also LED_BLUE, it will blink during SPI communication.
nebgnahz 0:54bf4b21c7fa 45 #define SCK PTD1
nebgnahz 0:54bf4b21c7fa 46 #define MOSI PTD2
nebgnahz 0:54bf4b21c7fa 47 #define MISO PTD3
nebgnahz 0:54bf4b21c7fa 48
nebgnahz 0:54bf4b21c7fa 49 DigitalOut red(LED_RED);
nebgnahz 0:54bf4b21c7fa 50 DigitalOut green(LED_GREEN);
nebgnahz 0:54bf4b21c7fa 51
nebgnahz 0:54bf4b21c7fa 52 Serial pc(USBTX, USBRX);
nebgnahz 0:54bf4b21c7fa 53 Adafruit_PN532 nfc(SCK, MISO, MOSI, SS);
nebgnahz 0:54bf4b21c7fa 54
nebgnahz 0:54bf4b21c7fa 55 void loop(void);
nebgnahz 0:54bf4b21c7fa 56
nebgnahz 0:54bf4b21c7fa 57 int main() {
nebgnahz 0:54bf4b21c7fa 58 pc.printf("Hello!\n");
nebgnahz 0:54bf4b21c7fa 59 // By default, red
nebgnahz 0:54bf4b21c7fa 60 green = 1; red = 0;
nebgnahz 0:54bf4b21c7fa 61
nebgnahz 0:54bf4b21c7fa 62 nfc.begin();
nebgnahz 0:54bf4b21c7fa 63
nebgnahz 0:54bf4b21c7fa 64 uint32_t versiondata = nfc.getFirmwareVersion();
nebgnahz 0:54bf4b21c7fa 65 if (! versiondata) {
nebgnahz 0:54bf4b21c7fa 66 pc.printf("Didn't find PN53x board");
nebgnahz 0:54bf4b21c7fa 67 while (1); // halt
nebgnahz 0:54bf4b21c7fa 68 }
nebgnahz 0:54bf4b21c7fa 69 // Got ok data, print it out!
nebgnahz 0:54bf4b21c7fa 70 pc.printf("Found chip PN5%2X with Firmware ver. %d.%d\n",
nebgnahz 0:54bf4b21c7fa 71 versiondata >> 24,
nebgnahz 0:54bf4b21c7fa 72 (versiondata >> 16) & 0xFF,
nebgnahz 0:54bf4b21c7fa 73 (versiondata >> 8) & 0xFF);
nebgnahz 0:54bf4b21c7fa 74
nebgnahz 0:54bf4b21c7fa 75 // configure board to read RFID tags
nebgnahz 0:54bf4b21c7fa 76 nfc.SAMConfig();
nebgnahz 0:54bf4b21c7fa 77
nebgnahz 0:54bf4b21c7fa 78 pc.printf("Waiting for an ISO14443A Card ...\n");
nebgnahz 0:54bf4b21c7fa 79
nebgnahz 0:54bf4b21c7fa 80 while(1) { loop(); }
nebgnahz 0:54bf4b21c7fa 81 }
nebgnahz 0:54bf4b21c7fa 82
nebgnahz 0:54bf4b21c7fa 83
nebgnahz 0:54bf4b21c7fa 84 void loop(void) {
nebgnahz 0:54bf4b21c7fa 85 // Turn back to red
nebgnahz 0:54bf4b21c7fa 86 green = 1; red = 0;
nebgnahz 0:54bf4b21c7fa 87
nebgnahz 0:54bf4b21c7fa 88 uint8_t success;
nebgnahz 0:54bf4b21c7fa 89 uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
nebgnahz 0:54bf4b21c7fa 90 uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
nebgnahz 0:54bf4b21c7fa 91
nebgnahz 0:54bf4b21c7fa 92 // Wait for an ISO14443A type cards (Mifare, etc.). When one is found
nebgnahz 0:54bf4b21c7fa 93 // 'uid' will be populated with the UID, and uidLength will indicate
nebgnahz 0:54bf4b21c7fa 94 // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
nebgnahz 0:54bf4b21c7fa 95 success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
nebgnahz 0:54bf4b21c7fa 96
nebgnahz 0:54bf4b21c7fa 97 if (success) {
nebgnahz 0:54bf4b21c7fa 98 // Turn off to indicate Card swipe
nebgnahz 0:54bf4b21c7fa 99 green = 1; red = 1;
nebgnahz 0:54bf4b21c7fa 100 // Display some basic information about the card
nebgnahz 0:54bf4b21c7fa 101 pc.printf("\n\nFound an ISO14443A card\n");
nebgnahz 0:54bf4b21c7fa 102 pc.printf(" UID Length: %d bytes", uidLength);
nebgnahz 0:54bf4b21c7fa 103 pc.printf(" UID Value: ");
nebgnahz 0:54bf4b21c7fa 104 nfc.PrintHex(uid, uidLength);
nebgnahz 0:54bf4b21c7fa 105 pc.printf("\n");
nebgnahz 0:54bf4b21c7fa 106
nebgnahz 0:54bf4b21c7fa 107 if (uidLength == 4)
nebgnahz 0:54bf4b21c7fa 108 {
nebgnahz 0:54bf4b21c7fa 109 // We probably have a Mifare Classic card ...
nebgnahz 0:54bf4b21c7fa 110 pc.printf("Seems to be a Mifare Classic card (4 byte UID)\n");
nebgnahz 0:54bf4b21c7fa 111
nebgnahz 0:54bf4b21c7fa 112 // Now we need to try to authenticate it for read/write access
nebgnahz 0:54bf4b21c7fa 113 // Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
nebgnahz 0:54bf4b21c7fa 114 pc.printf("Trying to authenticate block 4 with default KEYA value\n");
nebgnahz 0:54bf4b21c7fa 115 uint8_t keya[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
nebgnahz 0:54bf4b21c7fa 116
nebgnahz 0:54bf4b21c7fa 117 // Start with block 4 (the first block of sector 1) since sector 0
nebgnahz 0:54bf4b21c7fa 118 // contains the manufacturer data and it's probably better just
nebgnahz 0:54bf4b21c7fa 119 // to leave it alone unless you know what you're doing
nebgnahz 0:54bf4b21c7fa 120 success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya);
nebgnahz 0:54bf4b21c7fa 121
nebgnahz 0:54bf4b21c7fa 122 if (success)
nebgnahz 0:54bf4b21c7fa 123 {
nebgnahz 0:54bf4b21c7fa 124 // Turn green to indicate success
nebgnahz 0:54bf4b21c7fa 125 green = 0; red = 1;
nebgnahz 0:54bf4b21c7fa 126 pc.printf("Sector 1 (Blocks 4..7) has been authenticated\n");
nebgnahz 0:54bf4b21c7fa 127 uint8_t data[16];
nebgnahz 0:54bf4b21c7fa 128
nebgnahz 0:54bf4b21c7fa 129 // If you want to write something to block 4 to test with, remove
nebgnahz 0:54bf4b21c7fa 130 // the definition of data above, and uncomment the following lines
nebgnahz 0:54bf4b21c7fa 131 /************************************************************************
nebgnahz 0:54bf4b21c7fa 132 uint8_t data[16] = { 'b', 'e', 'n', ' ', 'z', 'h', 'a', 'n', 'g' };
nebgnahz 0:54bf4b21c7fa 133 success = nfc.mifareclassic_WriteDataBlock (4, data);
nebgnahz 0:54bf4b21c7fa 134 if (success)
nebgnahz 0:54bf4b21c7fa 135 {
nebgnahz 0:54bf4b21c7fa 136 // Data seems to have been read ... spit it out
nebgnahz 0:54bf4b21c7fa 137 pc.printf("Data Written to Block 4:\n\t");
nebgnahz 0:54bf4b21c7fa 138 nfc.PrintHexChar(data, 16);
nebgnahz 0:54bf4b21c7fa 139 pc.printf("\n");
nebgnahz 0:54bf4b21c7fa 140
nebgnahz 0:54bf4b21c7fa 141 // Wait a bit before reading the card again
nebgnahz 0:54bf4b21c7fa 142 wait(1);
nebgnahz 0:54bf4b21c7fa 143 }
nebgnahz 0:54bf4b21c7fa 144 else
nebgnahz 0:54bf4b21c7fa 145 {
nebgnahz 0:54bf4b21c7fa 146 pc.printf("Ooops ... unable to write the requested block.\n");
nebgnahz 0:54bf4b21c7fa 147 }
nebgnahz 0:54bf4b21c7fa 148 return;
nebgnahz 0:54bf4b21c7fa 149 ************************************************************************/
nebgnahz 0:54bf4b21c7fa 150
nebgnahz 0:54bf4b21c7fa 151 // Try to read the contents of block 4
nebgnahz 0:54bf4b21c7fa 152 success = nfc.mifareclassic_ReadDataBlock(4, data);
nebgnahz 0:54bf4b21c7fa 153
nebgnahz 0:54bf4b21c7fa 154 if (success)
nebgnahz 0:54bf4b21c7fa 155 {
nebgnahz 0:54bf4b21c7fa 156 // Data seems to have been read ... spit it out
nebgnahz 0:54bf4b21c7fa 157 pc.printf("Reading Block 4:\n\t");
nebgnahz 0:54bf4b21c7fa 158 nfc.PrintHexChar(data, 16);
nebgnahz 0:54bf4b21c7fa 159 pc.printf("\n");
nebgnahz 0:54bf4b21c7fa 160
nebgnahz 0:54bf4b21c7fa 161 // Wait a bit before reading the card again
nebgnahz 0:54bf4b21c7fa 162 wait(1);
nebgnahz 0:54bf4b21c7fa 163 }
nebgnahz 0:54bf4b21c7fa 164 else
nebgnahz 0:54bf4b21c7fa 165 {
nebgnahz 0:54bf4b21c7fa 166 pc.printf("Ooops ... unable to read the requested block. Try another key?\n");
nebgnahz 0:54bf4b21c7fa 167 }
nebgnahz 0:54bf4b21c7fa 168 }
nebgnahz 0:54bf4b21c7fa 169 else
nebgnahz 0:54bf4b21c7fa 170 {
nebgnahz 0:54bf4b21c7fa 171 pc.printf("Ooops ... authentication failed: Try another key?\n");
nebgnahz 0:54bf4b21c7fa 172 }
nebgnahz 0:54bf4b21c7fa 173 }
nebgnahz 0:54bf4b21c7fa 174
nebgnahz 0:54bf4b21c7fa 175 if (uidLength == 7)
nebgnahz 0:54bf4b21c7fa 176 {
nebgnahz 0:54bf4b21c7fa 177 // We probably have a Mifare Ultralight card ...
nebgnahz 0:54bf4b21c7fa 178 pc.printf("Seems to be a Mifare Ultralight tag (7 byte UID)\n");
nebgnahz 0:54bf4b21c7fa 179
nebgnahz 0:54bf4b21c7fa 180 // Try to read the first general-purpose user page (#4)
nebgnahz 0:54bf4b21c7fa 181 pc.printf("Reading page 4\n");
nebgnahz 0:54bf4b21c7fa 182 uint8_t data[32];
nebgnahz 0:54bf4b21c7fa 183 success = nfc.mifareultralight_ReadPage (4, data);
nebgnahz 0:54bf4b21c7fa 184 if (success)
nebgnahz 0:54bf4b21c7fa 185 {
nebgnahz 0:54bf4b21c7fa 186 // Data seems to have been read ... spit it out
nebgnahz 0:54bf4b21c7fa 187 nfc.PrintHexChar(data, 4);
nebgnahz 0:54bf4b21c7fa 188 pc.printf("\n");
nebgnahz 0:54bf4b21c7fa 189
nebgnahz 0:54bf4b21c7fa 190 // Wait a bit before reading the card again
nebgnahz 0:54bf4b21c7fa 191 wait(1);
nebgnahz 0:54bf4b21c7fa 192 }
nebgnahz 0:54bf4b21c7fa 193 else
nebgnahz 0:54bf4b21c7fa 194 {
nebgnahz 0:54bf4b21c7fa 195 pc.printf("Ooops ... unable to read the requested page!?\n");
nebgnahz 0:54bf4b21c7fa 196 }
nebgnahz 0:54bf4b21c7fa 197 }
nebgnahz 0:54bf4b21c7fa 198 }
nebgnahz 0:54bf4b21c7fa 199 }