RFID门禁系统报错解决 · DFRobot

#include <SPI.h>
#include <RFID.h>
#include <Servo.h>

RFID rfid(10, 9);
unsigned char status;
unsigned char str[MAX_LEN];

String accessGranted [2] = {"15301511012", "5305151412"};  //序列号位置
int accessGrantedSize = 2;                               //几个卡号

Servo lockServo;
int lockPos = 15;
int unlockPos = 75;
boolean locked = true;

int redLEDPin = 5;
int greenLEDPin = 6;

void setup()
{
  Serial.begin(9600);    //Serial monitor is only required to get tag ID numbers and for troubleshooting
  SPI.begin();          //Start SPI communication with reader
  rfid.init();          //initialization
  pinMode(redLEDPin, OUTPUT);    //LED startup sequence
  pinMode(greenLEDPin, OUTPUT);
  digitalWrite(redLEDPin, HIGH);
  delay(200);
  digitalWrite(greenLEDPin, HIGH);
  delay(200);
  digitalWrite(redLEDPin, LOW);
  delay(200);
  digitalWrite(greenLEDPin, LOW);
  lockServo.attach(3);
  lockServo.write(lockPos);       //Move servo into locked position
  Serial.println("Place card/tag near reader...");
}

void loop()
{
  if (rfid.findCard(PICC_REQIDL, str) == MI_OK) //Wait for a tag to be placed near the reader
  {
Serial.println("Card found");
String temp = "";                            //Temporary variable to store the read RFID number
if (rfid.anticoll(str) == MI_OK)             //Anti-collision detection, read tag serial number
{
   Serial.print("The card's ID number is : ");
   for (int i = 0; i < 4; i++)                //Record and display the tag serial number
   {
      temp = temp + (0x0F & (str >> 4));
      temp = temp + (0x0F & str);
   }
   Serial.println (temp);
   checkAccess (temp);    //Check if the identified tag is an allowed to open tag
}
rfid.selectTag(str); //Lock card to prevent a redundant read, removing the line will make the sketch read cards continually
  }
  rfid.halt();
}

void checkAccess (String temp) //Function to check if an identified tag is registered to allow access
{
  boolean granted = false;
  for (int i=0; i <= (accessGrantedSize-1); i++) //Runs through all tag ID numbers registered in the array
  {
if(accessGranted == temp)          //If a tag is found then open/close the lock
{
   Serial.println ("Access Granted");
   granted = true;
   if (locked == true)       //If the lock is closed then open it
   {
      lockServo.write(unlockPos);
      locked = false;
   }
   else if (locked == false) //If the lock is open then close it
   {
      lockServo.write(lockPos);
      locked = true;
   }
   digitalWrite(greenLEDPin, HIGH); //Green LED sequence
   delay(200);
   digitalWrite(greenLEDPin, LOW);
   delay(200);
   digitalWrite(greenLEDPin, HIGH);
   delay(200);
   digitalWrite(greenLEDPin, LOW);
   delay(200);
}
  }
  if (granted == false)    //If the tag is not found
  {
Serial.println ("Access Denied");
digitalWrite(redLEDPin, HIGH);    //Red LED sequence
delay(200);
digitalWrite(redLEDPin, LOW);
delay(200);
digitalWrite(redLEDPin, HIGH);
delay(200);
digitalWrite(redLEDPin, LOW);
delay(200);
  }

D:\打包解压RFID项目\RFID\RFID.ino:4:10: fatal error: RFID.h: No such file or directory
compilation terminated.

exit status 1

Compilation error: RFID.h: No such file or directory

我想问问这是哪里出现问题了呀，求大神大家指点，帮帮...