Yihui Xiong
Use Seeeduino Arch (or Arch Pro) + NFC Shield to read a Mifare Classic tag
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PN532_P2P
by 
Yihui Xiong
Revision 2:b238c6772bc4, committed 2013-11-21
- Comitter:
- yihui
- Date:
- Thu Nov 21 07:11:15 2013 +0000
- Parent:
- 1:a9df716f8a64
- Commit message:
- read a NFC tag
Changed in this revision
diff -r a9df716f8a64 -r b238c6772bc4 PN532.lib --- a/PN532.lib Thu Oct 17 07:47:22 2013 +0000 +++ b/PN532.lib Thu Nov 21 07:11:15 2013 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/yihui/code/PN532/#f618fb2169c4 +http://mbed.org/users/yihui/code/PN532/#0774b8298eb8
diff -r a9df716f8a64 -r b238c6772bc4 USBDevice.lib --- a/USBDevice.lib Thu Oct 17 07:47:22 2013 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/mbed_official/code/USBDevice/#d495202c90f4
diff -r a9df716f8a64 -r b238c6772bc4 main.cpp
--- a/main.cpp Thu Oct 17 07:47:22 2013 +0000
+++ b/main.cpp Thu Nov 21 07:11:15 2013 +0000
@@ -1,126 +1,35 @@
#include "mbed.h"
-#include "PN532.h"
+#include "PN532_SPI.h"
+#include "NfcAdapter.h"
-#if 0 // Output debug message or not
+#if 0 // Using Seeeduino Arch
#define LOG(args...)
-#else
-#include "USBSerial.h"
+SPI spi(P1_22, P1_21, P1_20); // SPI(mosi, miso, clk)
+PN532_SPI pn532spi(spi, P0_2);
+
+#else // Using Arch Pro
#define LOG(args...) pc.printf(args)
-
-USBSerial pc; // Use USB to Serial
-//Serial pc(USBTX, USBRX);
+Serial pc(USBTX, USBRX);
+SPI spi(P0_18, P0_17, P0_15);
+PN532_SPI pn532spi(spi, P0_6);
#endif
-// PN532(mosi, miso, clk, cs)
-PN532 nfc(P1_22, P1_21, P1_20, P0_2);
-
-DigitalOut led1(LED1);
-
-int main()
-{
- nfc.begin();
- uint32_t versiondata = nfc.getFirmwareVersion();
- if (! versiondata) {
- LOG("Didn't find PN532\r\n");
- while (1) {
- led1 = !led1;
- wait(0.1);
- }
- }
-
- LOG("Found chip PN5%2X\r\n", versiondata >> 24);
- LOG("Firmware V%d.%d\r\n", (versiondata >> 16) & 0xFF, (versiondata >> 8) & 0xFF);
-
- nfc.SAMConfig();
+NfcAdapter nfc(pn532spi);
+DigitalOut led(LED1);
- while (1) {
- uint8_t success;
- uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
- uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
-
- // Wait for an ISO14443A type cards (Mifare, etc.). When one is found
- // 'uid' will be populated with the UID, and uidLength will indicate
- // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
- success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 0);
-
- if (success) {
- // Display some basic information about the card
- LOG("Found an ISO14443A card\r\n");
- LOG("UID length: %d\r\nUID Value: ", uidLength);
- for (uint8_t i = 0; i < uidLength; i++) {
- LOG("0x%X ", uid[i]);
- }
-
- if (uidLength == 4) {
- // We probably have a Mifare Classic card ...
- LOG("Seems to be a Mifare Classic card (4 byte UID)\r\n");
-
- // Now we need to try to authenticate it for read/write access
- // Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
- LOG("Trying to authenticate block 4 with default KEYA value\r\n");
- uint8_t keya[6] = { 0xD3, 0xF7, 0xD3, 0xF7, 0xD3, 0xF7 };
- // Start with block 4 (the first block of sector 1) since sector 0
- // contains the manufacturer data and it's probably better just
- // to leave it alone unless you know what you're doing
- success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya);
-
- if (success) {
- LOG("Sector 1 (Blocks 4..7) has been authenticated\r\n");
- uint8_t data[16];
-
- // If you want to write something to block 4 to test with, uncomment
- // the following line and this text should be read back in a minute
- // data = { 'a', 'd', 'a', 'f', 'r', 'u', 'i', 't', '.', 'c', 'o', 'm', 0, 0, 0, 0};
- // success = nfc.mifareclassic_WriteDataBlock (4, data);
-
- // Try to read the contents of block 4
- success = nfc.mifareclassic_ReadDataBlock(4, data);
-
- if (success) {
- // Data seems to have been read ... spit it out
- LOG("Reading Block 4:\r\n");
- for (int i = 0; i < 16; i++) {
- LOG("%2X ", data[i]);
- }
- LOG(" ");
- for (int i = 0; i < 16; i++) {
- LOG("%c", (char)data[i]);
- }
- LOG("\r\n");
- } else {
- LOG("Ooops ... unable to read the requested block. Try another key?\r\n");
- }
- } else {
- LOG("Ooops ... authentication failed: Try another key?\r\n");
- }
- }
-
- if (uidLength == 7) {
- // We probably have a Mifare Ultralight card ...
- LOG("Seems to be a Mifare Ultralight tag (7 byte UID)\r\n");
-
- // Try to read the first general-purpose user page (#4)
- LOG("Reading page 4\r\n");
- uint8_t data[32];
- success = nfc.mifareultralight_ReadPage (4, data);
- if (success) {
- // Data seems to have been read ... spit it out
- for (int i = 0; i < 4; i++) {
- LOG("%2X ", data[i]);
- }
- LOG(" ");
- for (int i = 0; i < 4; i++) {
- LOG("%c", (char)data[i]);
- }
- LOG("\r\n");
- } else {
- LOG("Ooops ... unable to read the requested page!?\r\n");
- }
+int main() {
+ LOG("NDEF Reader\n");
+ nfc.begin();
+ while (1) {
+ LOG("\nScan a NFC tag\n");
+ if (nfc.tagPresent()) {
+ NfcTag tag = nfc.read(); // tag.print() doesn't work yet
+ if (tag.hasNdefMessage()) {
+ LOG("Get a NDEF message.");
+ NdefMessage message = tag.getNdefMessage();
}
}
-
- wait(3);
+ wait(5);
}
}
-