2018年8月5日 星期日
NodeMCU Mifare MFRC522 RFID Reader/Writer
/*
Many thanks to nikxha from the ESP8266 forum
*/
#include <ESP8266WiFi.h>
#include <SPI.h>
#include "MFRC522.h"
/* Wiring RFID RC522 module
=============================================================================
GND = GND 3.3V = 3.3V
The following table shows the typical pin layout used:
Signal MFRC522 WeMos D1 mini NodeMcu Generic
RST/Reset RST D3 [1] D3 [1] GPIO-0 [1]
SPI SS SDA [3] D8 [2] D8 [2] GPIO-15 [2]
SPI MOSI MOSI D7 D7 GPIO-13
SPI MISO MISO D6 D6 GPIO-12
SPI SCK SCK D5 D5 GPIO-14
[1] (1, 2) Configurable, typically defined as RST_PIN in sketch/program.
[2] (1, 2) Configurable, typically defined as SS_PIN in sketch/program.
[3] The SDA pin might be labeled SS on some/older MFRC522 boards
=============================================================================
*/
#define RST_PIN D3 // RST-PIN für RC522 - RFID - SPI - D3
#define SS_PIN D8 // SDA-PIN für RC522 - RFID - SPI - D8
// Update these with values suitable for your network.
//const char *ssid = "PTS-2F";
//const char *pass = "";
const char *ssid = "74170287";
const char *pass = "24063173";
//const char *ssid = "yourSSID"; // change according to your Network - cannot be longer than 32 characters!
//const char *pass = "yourPASSWORD"; // change according to your Network
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance
//Variables
long lastMsg = 0;
String IDNo_buf="";
//=============================================================================
void setup() {
Serial.begin(115200); // Initialize serial communications
delay(250);
Serial.println(F("Booting...."));
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522
WiFi.begin(ssid, pass);
int retries = 0;
while ((WiFi.status() != WL_CONNECTED) && (retries < 10)) {
retries++;
delay(500);
Serial.print(".");
}
if (WiFi.status() == WL_CONNECTED) {
Serial.println(F("WiFi connected"));
}
Serial.println(F("Ready!"));
Serial.println(F("======================================================"));
Serial.println(F("Scan for Card and print UID:"));
}
//=============================================================================
void loop() {
// Look for new cards
/*if ( ! mfrc522.PICC_IsNewCardPresent()) {
delay(50);
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial()) {
delay(50);
return;
}*/
long now = millis();
// 確認是否有新卡片
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) { // 如果出現新卡片就讀取卡片資料
delay(100);
String IDNo = printHex(mfrc522.uid.uidByte, mfrc522.uid.size);
// Show some details of the PICC (that is: the tag/card)
if ((IDNo != IDNo_buf) || (now - lastMsg > 5000)) {
lastMsg = now;
Serial.print(F("Card UID:"));
Serial.println(IDNo);
//Serial.println(IDNo_buf);
IDNo_buf="";
IDNo_buf=IDNo;
}
//Serial.print(F("Card UID:"));
//dump_byte_array_dec(mfrc522.uid.uidByte, mfrc522.uid.size);
//dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size);
//Serial.println();
}
}
//=============================================================================
String printHex(byte *buffer, byte bufferSize) {
String id = "";
for (byte i = 0; i < bufferSize; i++) {
id += buffer[i] < 0x10 ? "0" : "";
id += String(buffer[i], HEX);
}
return id;
}
//=============================================================================
/*
// 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);
}
}
//=============================================================================
// Helper routine to dump a byte array as hex values to Serial
void dump_byte_array_dec(byte *buffer, byte bufferSize) {
for (byte i = 0; i < bufferSize; i++) {
Serial.print(buffer[i] < 0x10 ? " 0" : " ");
Serial.print(buffer[i], DEC);
}
}
//=============================================================================
*/
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