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39 lines
776 B
C++
39 lines
776 B
C++
#include <Wire.h>
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#include <Adafruit_PN532.h>
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#define SDA_PIN 2
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#define SCL_PIN 1
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Adafruit_PN532 nfc(SDA_PIN, SCL_PIN);
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void setup(void) {
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Serial.begin(115200);
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nfc.begin();
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uint32_t versiondata = nfc.getFirmwareVersion();
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if (!versiondata) {
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Serial.print("Didn't find PN53x board");
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while (1);
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}
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nfc.SAMConfig();
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}
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void loop(void) {
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uint8_t success;
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uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };
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uint8_t uidLength;
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success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
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if (success) {
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for (uint8_t i = 0; i < uidLength; i++) {
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String hexString = (uid[i] < 0x10 ? "0" : "") + String(uid[i], HEX);
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hexString.toUpperCase();
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Serial.print(hexString);
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}
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Serial.println("");
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delay(1000);
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}
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}
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