| 1 | #include "nfc.h" |
| 2 | |
| 3 | #include <Arduino.h> |
| 4 | #include <Wire.h> |
| 5 | #include <Adafruit_PN532.h> |
| 6 | |
| 7 | #include "ui/display.h" |
| 8 | #include "../utils/buttons.h" |
| 9 | #include "../config.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 | { |
| 19 | u8g2.clearBuffer(); |
| 20 | |
| 21 | u8g2.drawStr(10, 20, "PN532 Ready"); |
| 22 | u8g2.drawStr(10, 40, "Tap NFC Card"); |
| 23 | |
| 24 | u8g2.sendBuffer(); |
| 25 | } |
| 26 | |
| 27 | void showUID(uint8_t *uid, uint8_t uidLength) |
| 28 | { |
| 29 | char line[64]; |
| 30 | |
| 31 | String uidStr = ""; |
| 32 | |
| 33 | for (int i = 0; i < uidLength; i++) |
| 34 | { |
| 35 | if (uid[i] < 0x10) |
| 36 | uidStr += "0"; |
| 37 | |
| 38 | uidStr += String(uid[i], HEX); |
| 39 | uidStr += " "; |
| 40 | } |
| 41 | |
| 42 | uidStr.toUpperCase(); |
| 43 | |
| 44 | u8g2.clearBuffer(); |
| 45 | |
| 46 | u8g2.drawStr(0, 15, "Card Detected"); |
| 47 | |
| 48 | snprintf(line, sizeof(line), "UID:"); |
| 49 | |
| 50 | u8g2.drawStr(0, 35, line); |
| 51 | |
| 52 | u8g2.drawStr(0, 50, uidStr.c_str()); |
| 53 | |
| 54 | u8g2.sendBuffer(); |
| 55 | } |
| 56 | |
| 57 | void pn532_init() |
| 58 | { |
| 59 | delay(100); |
| 60 | nfc.begin(); |
| 61 | delay(100); |
| 62 | |
| 63 | uint32_t versiondata = nfc.getFirmwareVersion(); |
| 64 | |
| 65 | if (!versiondata) |
| 66 | { |
| 67 | Serial.println("PN532 not found"); |
| 68 | |
| 69 | u8g2.clearBuffer(); |
| 70 | u8g2.drawStr(0, 20, "PN532 NOT FOUND"); |
| 71 | u8g2.sendBuffer(); |
| 72 | |
| 73 | delay(2000); |
| 74 | return; |
| 75 | } |
| 76 | |
| 77 | Serial.println("PN532 initialized"); |
| 78 | |
| 79 | nfc.SAMConfig(); |
| 80 | } |
| 81 | |
| 82 | void pn532_scan_loop() |
| 83 | { |
| 84 | pn532_init(); |
| 85 | |
| 86 | drawWaiting(); |
| 87 | |
| 88 | while (1) |
| 89 | { |
| 90 | uint8_t success; |
| 91 | uint8_t uid[7]; |
| 92 | uint8_t uidLength; |
| 93 | |
| 94 | Serial.println("Scanning..."); |
| 95 | success = nfc.readPassiveTargetID( |
| 96 | PN532_MIFARE_ISO14443A, |
| 97 | uid, |
| 98 | &uidLength, |
| 99 | 50 |
| 100 | ); |
| 101 | |
| 102 | if (success) |
| 103 | { |
| 104 | Serial.println("Card detected"); |
| 105 | |
| 106 | showUID(uid, uidLength); |
| 107 | |
| 108 | delay(1000); |
| 109 | } |
| 110 | |
| 111 | if (btnBack()) |
| 112 | { |
| 113 | delay(150); |
| 114 | break; |
| 115 | } |
| 116 | } |
| 117 | } |