PN532 Driver library This library provides an abstract API to drive the pn532 nfc chip, with I2C/HSU/SPI interface. Its based on the Seeed Studio's Arduino version.
Dependents: PN532_ReadUid Nfctest2
Diff: PN532/examples/readMifare/readMifare.pde
- Revision:
- 1:b5922b3b3257
- Parent:
- 0:db8030e71f55
diff -r db8030e71f55 -r b5922b3b3257 PN532/examples/readMifare/readMifare.pde --- a/PN532/examples/readMifare/readMifare.pde Tue Sep 13 06:01:19 2016 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,145 +0,0 @@ -/**************************************************************************/ -/*! - This example will wait for any ISO14443A card or tag, and - depending on the size of the UID will attempt to read from it. - - If the card has a 4-byte UID it is probably a Mifare - Classic card, and the following steps are taken: - - - Authenticate block 4 (the first block of Sector 1) using - the default KEYA of 0XFF 0XFF 0XFF 0XFF 0XFF 0XFF - - If authentication succeeds, we can then read any of the - 4 blocks in that sector (though only block 4 is read here) - - If the card has a 7-byte UID it is probably a Mifare - Ultralight card, and the 4 byte pages can be read directly. - Page 4 is read by default since this is the first 'general- - purpose' page on the tags. - - To enable debug message, define DEBUG in PN532/PN532_debug.h -*/ -/**************************************************************************/ - -#include <SPI.h> -#include <PN532_SPI.h> -#include "PN532.h" - -PN532_SPI pn532spi(SPI, 10); -PN532 nfc(pn532spi); - -void setup(void) { - Serial.begin(115200); - Serial.println("Hello!"); - - nfc.begin(); - - uint32_t versiondata = nfc.getFirmwareVersion(); - if (! versiondata) { - Serial.print("Didn't find PN53x board"); - while (1); // halt - } - // Got ok data, print it out! - Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX); - Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC); - Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC); - - // configure board to read RFID tags - nfc.SAMConfig(); - - Serial.println("Waiting for an ISO14443A Card ..."); -} - - -void loop(void) { - 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); - - if (success) { - // Display some basic information about the card - Serial.println("Found an ISO14443A card"); - Serial.print(" UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes"); - Serial.print(" UID Value: "); - nfc.PrintHex(uid, uidLength); - Serial.println(""); - - if (uidLength == 4) - { - // We probably have a Mifare Classic card ... - Serial.println("Seems to be a Mifare Classic card (4 byte UID)"); - - // Now we need to try to authenticate it for read/write access - // Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF - Serial.println("Trying to authenticate block 4 with default KEYA value"); - uint8_t keya[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; - - // 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) - { - Serial.println("Sector 1 (Blocks 4..7) has been authenticated"); - 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 - Serial.println("Reading Block 4:"); - nfc.PrintHexChar(data, 16); - Serial.println(""); - - // Wait a bit before reading the card again - delay(1000); - } - else - { - Serial.println("Ooops ... unable to read the requested block. Try another key?"); - } - } - else - { - Serial.println("Ooops ... authentication failed: Try another key?"); - } - } - - if (uidLength == 7) - { - // We probably have a Mifare Ultralight card ... - Serial.println("Seems to be a Mifare Ultralight tag (7 byte UID)"); - - // Try to read the first general-purpose user page (#4) - Serial.println("Reading page 4"); - uint8_t data[32]; - success = nfc.mifareultralight_ReadPage (4, data); - if (success) - { - // Data seems to have been read ... spit it out - nfc.PrintHexChar(data, 4); - Serial.println(""); - - // Wait a bit before reading the card again - delay(1000); - } - else - { - Serial.println("Ooops ... unable to read the requested page!?"); - } - } - } -} -