您好，我正在尝试制作一个程序来比较 NFC 标签#ID，我非常习惯 Arduino，但我不习惯 SPI 编程。
我搜索了很多，但我真的不知道我到底需要什么。
我正在尝试匹配 NFC 标签 #ID 和变量 NFC1。
谁能帮我？请？
我只需要一些信息/帮助来使 if 语句起作用。
#include <PN532.h>
#include <SPI.h>
//SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK)
/*Chip select pin can be connected to D10 or D9 which is hareware optional*/
/*if you the version of NFC Shield from SeeedStudio is v2.0.*/
#define PN532_CS 10
PN532 nfc(PN532_CS);
#define NFC_DEMO_DEBUG 1
int BUZZER = 6;
uint32_t NFC1 = 3795120787;
int NFC2 = 3262404755;
int NFC3 = 46356883;
int NFC4 = 35320979;
int NFC5 = 3257334163;
void setup(void) {
pinMode(BUZZER, OUTPUT);
#ifdef NFC_DEMO_DEBUG
Serial.begin(9600);
Serial.println("Hello!");
#endif
nfc.begin();
uint32_t versiondata = nfc.getFirmwareVersion();
if (! versiondata) {
#ifdef NFC_DEMO_DEBUG
Serial.print("Didn't find PN53x board");
Serial.print("");
#endif
while (1); // halt
}
#ifdef NFC_DEMO_DEBUG
// 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.print("Supports ");
Serial.println(versiondata & 0xFF, HEX);*/
#endif
// configure board to read RFID tags and cards
nfc.SAMConfig();
}
void loop(void) {
uint32_t id;
// look for MiFare type cards
id = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A);
if (id != 0) {
#ifdef NFC_DEMO_DEBUG
Serial.println("");
Serial.print("Card #");
Serial.println(id);
analogWrite(BUZZER, 50);
delay(100);
analogWrite(BUZZER, 0);
delay(1000);
#endif
//char ch = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A);
if(NFC1 = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A)){
analogWrite(6, 255);
delay(250);
analogWrite(6, 0);
/*analogWrite(BUZZER, 50);
delay(50);
analogWrite(BUZZER, 0);
delay(50);
analogWrite(BUZZER, 50);
delay(50);
analogWrite(BUZZER, 0);*/}
else {
analogWrite(5, 255);
delay(250);
analogWrite(5, 0);
/*analogWrite(BUZZER, 50);
delay(100);
analogWrite(BUZZER, 0);
delay(100);
analogWrite(BUZZER, 50);
delay(100);
analogWrite(BUZZER, 0);
delay(100);
analogWrite(BUZZER, 50);
delay(100);
analogWrite(BUZZER, 0);*/}
}
}