View source for WeMOS: D1 R1 mini RFID 2

Sumber: https://gist.github.com/alexey-bass/6b6e53e05d9a8d1468038ea78d536914


[[File:WEMOS-D1-mini-pin.png|center|300px|thumb]]


Install library

* Download https://downloads.arduino.cc/libraries/github.com/miguelbalboa/MFRC522-1.4.11.zip

 mv MFRC522-1.4.11.zip ~/Arduino/libraries/
 cd ~/Arduino/libraries/
 unzip MFRC522-1.4.11.zip

Source OK

 /**
 Useful links
 https://wiki.wemos.cc/products:d1:d1_mini
 https://cdn-images-1.medium.com/max/1400/1*YKc8KpAfMrlhrOLmNjdRwQ.png (D1 full pinout)
 https://github.com/Jorgen-VikingGod/ESP8266-MFRC522
 https://github.com/miguelbalboa/rfid

 d1 mini rc52 wiring
 https://discourse-cdn-sjc1.com/business5/uploads/mydevices/original/2X/e/ecedba79dc05f2c0b02b7fba8b3da2681590a11a.jpg
 RST  - D3
 MISO - D6
 MOSI - D7
 SCK  - D5
 SDA  - D8
 */
 
 #include "ESP8266WiFi.h"
 #include <SPI.h>
 #include <MFRC522.h>
 
 constexpr uint8_t RST_PIN =  0;          // Configurable, see typical pin layout above 18
 constexpr uint8_t SS_PIN =  15;         // Configurable, see typical pin layout above  16
 
 MFRC522 mfrc522(SS_PIN, RST_PIN);  // Create MFRC522 instance
 
 void setup() {
   Serial.begin(115200);   // Initialize serial communications with the PC
   delay(1000);
   Serial.println("Setup");
   
   while (!Serial);    // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
   SPI.begin();      // Init SPI bus
   mfrc522.PCD_Init();   // Init MFRC522
   mfrc522.PCD_DumpVersionToSerial();  // Show details of PCD - MFRC522 Card Reader details
   Serial.println(F("Scan PICC to see UID, SAK, type, and data blocks..."));
   Serial.println("Setup done");
 }
 
 void loop() {
 //  Serial.println("Loop...");
  
   // Look for new cards
   if ( ! mfrc522.PICC_IsNewCardPresent()) {
     //delay(50);
     return;
   }

  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) {
    //delay(50);
    return;
  }
 
   // Show some details of the PICC (that is: the tag/card)
   Serial.print(F("Card UID:"));
   dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size);
   Serial.println();
   
   // Dump debug info about the card; PICC_HaltA() is automatically called
   //mfrc522.PICC_DumpToSerial(&(mfrc522.uid));  

   delay(1000);
 }
 
 // Helper routine to dump a byte array as hex values to Serial
 void dump_byte_array(byte *buffer, byte bufferSize) {
   for (byte i = 0; i < bufferSize; i++) {
     Serial.print(buffer[i] < 0x10 ? " 0" : " ");
     Serial.print(buffer[i], HEX);
   }
 } 



==Referensi==

* https://gist.github.com/alexey-bass/6b6e53e05d9a8d1468038ea78d536914