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Diffstat (limited to '.pio/libdeps/esp32-s3-n16r8/Adafruit PN532/examples/readMifare')
| -rw-r--r-- | .pio/libdeps/esp32-s3-n16r8/Adafruit PN532/examples/readMifare/readMifare.ino | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/.pio/libdeps/esp32-s3-n16r8/Adafruit PN532/examples/readMifare/readMifare.ino b/.pio/libdeps/esp32-s3-n16r8/Adafruit PN532/examples/readMifare/readMifare.ino new file mode 100644 index 0000000..ecd4d28 --- /dev/null +++ b/.pio/libdeps/esp32-s3-n16r8/Adafruit PN532/examples/readMifare/readMifare.ino @@ -0,0 +1,184 @@ +/**************************************************************************/ +/*! + @file readMifare.pde + @author Adafruit Industries + @license BSD (see license.txt) + + 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. + + +This is an example sketch for the Adafruit PN532 NFC/RFID breakout boards +This library works with the Adafruit NFC breakout + ----> https://www.adafruit.com/products/364 + +Check out the links above for our tutorials and wiring diagrams +These chips use SPI or I2C to communicate. + +Adafruit invests time and resources providing this open source code, +please support Adafruit and open-source hardware by purchasing +products from Adafruit! + +*/ +/**************************************************************************/ +#include <Wire.h> +#include <SPI.h> +#include <Adafruit_PN532.h> + +// If using the breakout with SPI, define the pins for SPI communication. +#define PN532_SCK (2) +#define PN532_MOSI (3) +#define PN532_SS (4) +#define PN532_MISO (5) + +// If using the breakout or shield with I2C, define just the pins connected +// to the IRQ and reset lines. Use the values below (2, 3) for the shield! +#define PN532_IRQ (2) +#define PN532_RESET (3) // Not connected by default on the NFC Shield + +// Uncomment just _one_ line below depending on how your breakout or shield +// is connected to the Arduino: + +// Use this line for a breakout with a software SPI connection (recommended): +Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS); + +// Use this line for a breakout with a hardware SPI connection. Note that +// the PN532 SCK, MOSI, and MISO pins need to be connected to the Arduino's +// hardware SPI SCK, MOSI, and MISO pins. On an Arduino Uno these are +// SCK = 13, MOSI = 11, MISO = 12. The SS line can be any digital IO pin. +//Adafruit_PN532 nfc(PN532_SS); + +// Or use this line for a breakout or shield with an I2C connection: +//Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET); + +// Or use hardware Serial: +//Adafruit_PN532 nfc(PN532_RESET, &Serial1); + +void setup(void) { + Serial.begin(115200); + while (!Serial) delay(10); // for Leonardo/Micro/Zero + + 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); + + 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 + //memcpy(data, (const uint8_t[]){ 'a', 'd', 'a', 'f', 'r', 'u', 'i', 't', '.', 'c', 'o', 'm', 0, 0, 0, 0 }, sizeof data); + // 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!?"); + } + } + } +} + |