Page 125 - MDP2020-1

················································································ 명장양성프로젝트 【MDP】 과제발표회 자료집 Ⅰ | 119

delayMicroseconds(10); // 10us 딜레이

digitalWrite(trig, LOW); // Trig 핀 Low
duration = pulseIn(echo, HIGH);
Serial.println(duration);
if(duration<400){
servo1.write(0);

delay(3000);
servo1.write(90);
}
else{servo1.write(90);}
delay(100);

delay(100);
// Reset the loop if no new card present on the sensor/reader. This saves the
entire process when idle.
if ( ! rfid.PICC_IsNewCardPresent())
return;

// Verify if the NUID has been readed
if ( ! rfid.PICC_ReadCardSerial())
return;
Serial.print("UID tag :");
String content= "";

byte letter;
for (byte i = 0; i < rfid.uid.size; i++)
{
Serial.print(rfid.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(rfid.uid.uidByte[i], HEX);

content.concat(String(rfid.uid.uidByte[i] < 0x10 ? " 0" : " "));
content.concat(String(rfid.uid.uidByte[i], HEX));
}
Serial.println();
Serial.print("Message : ");
content.toUpperCase();

// UID값이 아래 값과 같으면 승인 처리
if (content.substring(1) == "BB D1 53 4B") // 승인 하고자하는 UID 기록
{
// 인증이 되면 Green LED와 함께 서보모터를 작동시킨다.

Serial.println("Authorized access");
Serial.println();
digitalWrite(GLED,HIGH);
//servo.write(180); // 서보모터의 각도를 변경한다