| 1 | #include "nfc.h" |
| 2 | |
| 3 | #include <Adafruit_PN532.h> |
| 4 | #include <Arduino.h> |
| 5 | #include <Wire.h> |
| 6 | |
| 7 | #include "../config.h" |
| 8 | #include "../utils/buttons.h" |
| 9 | #include "ui/display.h" |
| 10 | |
| 11 | #define PN532_IRQ -1 |
| 12 | #define PN532_RESET -1 |
| 13 | |
| 14 | // Adafruit_PN532 nfc(Wire); |
| 15 | Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET, &Wire); |
| 16 | |
| 17 | void drawWaiting() { |
| 18 | u8g2.clearBuffer(); |
| 19 | |
| 20 | u8g2.drawStr(10, 20, "PN532 Ready"); |
| 21 | u8g2.drawStr(10, 40, "Tap NFC Card"); |
| 22 | |
| 23 | u8g2.sendBuffer(); |
| 24 | } |
| 25 | |
| 26 | void showUID(uint8_t *uid, uint8_t uidLength) { |
| 27 | char line[64]; |
| 28 | |
| 29 | String uidStr = ""; |
| 30 | |
| 31 | for (int i = 0; i < uidLength; i++) { |
| 32 | if (uid[i] < 0x10) |
| 33 | uidStr += "0"; |
| 34 | |
| 35 | uidStr += String(uid[i], HEX); |
| 36 | uidStr += " "; |
| 37 | } |
| 38 | |
| 39 | uidStr.toUpperCase(); |
| 40 | |
| 41 | u8g2.clearBuffer(); |
| 42 | |
| 43 | u8g2.drawStr(0, 15, "Card Detected"); |
| 44 | |
| 45 | snprintf(line, sizeof(line), "UID:"); |
| 46 | |
| 47 | u8g2.drawStr(0, 35, line); |
| 48 | |
| 49 | u8g2.drawStr(0, 50, uidStr.c_str()); |
| 50 | |
| 51 | u8g2.sendBuffer(); |
| 52 | } |
| 53 | |
| 54 | void pn532_init() { |
| 55 | delay(100); |
| 56 | nfc.begin(); |
| 57 | delay(100); |
| 58 | |
| 59 | uint32_t versiondata = nfc.getFirmwareVersion(); |
| 60 | |
| 61 | if (!versiondata) { |
| 62 | Serial.println("PN532 not found"); |
| 63 | |
| 64 | u8g2.clearBuffer(); |
| 65 | u8g2.drawStr(0, 20, "PN532 NOT FOUND"); |
| 66 | u8g2.sendBuffer(); |
| 67 | |
| 68 | delay(2000); |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | Serial.println("PN532 initialized"); |
| 73 | |
| 74 | nfc.SAMConfig(); |
| 75 | } |
| 76 | |
| 77 | void pn532_scan_loop() { |
| 78 | pn532_init(); |
| 79 | |
| 80 | drawWaiting(); |
| 81 | |
| 82 | while (1) { |
| 83 | uint8_t success; |
| 84 | uint8_t uid[7]; |
| 85 | uint8_t uidLength; |
| 86 | |
| 87 | Serial.println("Scanning..."); |
| 88 | success = |
| 89 | nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 50); |
| 90 | |
| 91 | if (success) { |
| 92 | Serial.println("Card detected"); |
| 93 | |
| 94 | showUID(uid, uidLength); |
| 95 | |
| 96 | delay(1000); |
| 97 | } |
| 98 | |
| 99 | if (btnBack()) { |
| 100 | delay(150); |
| 101 | break; |
| 102 | } |
| 103 | } |
| 104 | } |