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#include "nfc.h"
#include <Adafruit_PN532.h>
#include <Arduino.h>
#include <Wire.h>
#include "../config.h"
#include "../utils/buttons.h"
#include "ui/display.h"
#define PN532_IRQ -1
#define PN532_RESET -1
// Adafruit_PN532 nfc(Wire);
Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET, &Wire);
void drawWaiting() {
u8g2.clearBuffer();
u8g2.drawStr(10, 20, "PN532 Ready");
u8g2.drawStr(10, 40, "Tap NFC Card");
u8g2.sendBuffer();
}
void showUID(uint8_t *uid, uint8_t uidLength) {
char line[64];
String uidStr = "";
for (int i = 0; i < uidLength; i++) {
if (uid[i] < 0x10)
uidStr += "0";
uidStr += String(uid[i], HEX);
uidStr += " ";
}
uidStr.toUpperCase();
u8g2.clearBuffer();
u8g2.drawStr(0, 15, "Card Detected");
snprintf(line, sizeof(line), "UID:");
u8g2.drawStr(0, 35, line);
u8g2.drawStr(0, 50, uidStr.c_str());
u8g2.sendBuffer();
}
void pn532_init() {
delay(100);
nfc.begin();
delay(100);
uint32_t versiondata = nfc.getFirmwareVersion();
if (!versiondata) {
Serial.println("PN532 not found");
u8g2.clearBuffer();
u8g2.drawStr(0, 20, "PN532 NOT FOUND");
u8g2.sendBuffer();
delay(2000);
return;
}
Serial.println("PN532 initialized");
nfc.SAMConfig();
}
void pn532_scan_loop() {
pn532_init();
drawWaiting();
while (1) {
uint8_t success;
uint8_t uid[7];
uint8_t uidLength;
Serial.println("Scanning...");
success =
nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 50);
if (success) {
Serial.println("Card detected");
showUID(uid, uidLength);
delay(1000);
}
if (btnBack()) {
delay(150);
break;
}
}
}
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