我有一个RFID-RC522(MF-RC522)模块,正在使用Arduino的编程软件。
为了使用这个RFID模块,我下载了Arduino MFRC522库。
然后我运行了库的示例代码。
以下是代码:
/*
* MFRC522 - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
* The library file MFRC522.h has a wealth of useful info. Please read it.
* The functions are documented in MFRC522.cpp.
*
* Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
* Created by Miguel Balboa (circuitito.com), Jan, 2012.
* Rewritten by Søren Thing Andersen (access.thing.dk), fall of 2013 (Translation to English, refactored, comments, anti collision, cascade levels.)
* Released into the public domain.
*
* Sample program showing how to read data from a PICC using a MFRC522 reader on the Arduino SPI interface.
*----------------------------------------------------------------------------- empty_skull
* Aggiunti pin per arduino Mega
* add pin configuration for arduino mega
* http://mac86project.altervista.org/
----------------------------------------------------------------------------- Nicola Coppola
* Pin layout should be as follows:
* Signal Pin Pin Pin
* Arduino Uno Arduino Mega MFRC522 board
* ------------------------------------------------------------
* Reset 9 5 RST
* SPI SS 10 53 SDA
* SPI MOSI 11 51 MOSI
* SPI MISO 12 50 MISO
* SPI SCK 13 52 SCK
*
* The reader can be found on eBay for around 5 dollars. Search for "mf-rc522" on ebay.com.
*/
#include <SPI.h>
#include <MFRC522.h>
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
void setup() {
Serial.begin(9600); // Initialize serial communications with the PC
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522 card
Serial.println("Scan PICC to see UID and type...");
}
void loop() {
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent()) {
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial()) {
return;
}
// Dump debug info about the card. PICC_HaltA() is automatically called.
mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
}
当我运行这段代码并将其中一张卡放到RFID读卡器上时,Arduino IDE的串口监视器会显示大量信息。类似于这样...(我无法发布图片)
//
Scan PICC to see UID and type...
Card UID : 84 90 6C A7
PICC type : MIFARE 1KB
Sector Block 0 1 2 3 4 5 6 7 ...
15 63 00 00 00 00 ...
//
但我只需要卡片UID。 在这种情况下是84 90 6C A7。
实际上,我有一个项目。 如果插入特定的RFID卡,我想要打开LED灯。为了做到这一点,我需要读取卡的UID并将其分配给Arduino草图程序中的某些变量。
但我不知道如何在这种情况下获取RFID标签的UID(对我来说,这个库和函数很复杂)。
如果有人知道如何做到这一点,请帮助我。
warning: left shift count >= width of type hex_num = mfrc522.uid.uidByte[0] << 24
。 - yentsun0
。 - Pwdr