利用RFID rc522 reader讀取 mifare卡號，送至MQTT上。
用Node-RED 訂閱取得MQTT上刷卡卡號，並且顯示於Node-RED UI介面上。 可以使用 Node-RED UI上的 on LED ,off LED ,flash LED 控制 NodeMCU上的 LED on,off ,flash。
1) 使用 ESP8266 Node-MCU (Lolin) + RFID RC522 Reader讀取RFID Tag
接線如下
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
程式如後
2) 啟動Node-RED (PC進入到CMD 模式)
C:\Users\alex\AppData\Roaming\npm\node-red.cmd
3) 打開 Chrome瀏覽器，網址列輸入
http://127.0.0.1:1880/，就可以打開 Node-RED，把Node-RED程式匯入
5)匯入程式
6)按Deploy
7) Debug 模式 與 UI 模式的切換
8)進入 UI 模式 控制LED ON/OFF/FLASH 與顯示RFID 感應資訊
10) 卡號的顯示
10). 其他畫面
ESP8266程式
=====================================================
/*
Many thanks to nikxha from the ESP8266 or WEMOSD1 forum
*/
#include <ESP8266WiFi.h>
#include <PubSubClient.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 = "PTS6662594";
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
#define MQTTid "" //id of this mqtt client
#define MQTTip "broker.mqtt-dashboard.com" //ip address or hostname of the mqtt broker
#define MQTTport 1883 //port of the mqtt broker
#define MQTTuser "alex9ufo" //username of this mqtt client
#define MQTTpsw "alex9981" //password of this mqtt client
//#define MQTTuser "your_username" //username of this mqtt client
//#define MQTTpsw "your_password" //password of this mqtt client
#define MQTTpubQos 2 //qos of publish (see README)
#define MQTTsubQos 1 //qos of subscribe
#define BUILTIN_LED 2 // Arduino standard is GPIO13 but lolin nodeMCU is 2
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance
struct RFIDTag { // 定義結構
byte uid[4];
char *name;
};
//==================================
//先執行RFID_2程式確認卡號再來設定
// 初始化結構資料
// 將卡號變成代號Arduino....Raspberry Pi.....Espruino
//==================================
struct RFIDTag tags[] = { // 初始化結構資料
{{0x70,0x21,0xED,0x10}, "Alex9ufo"},
{{0x44,0x51,0xBB,0x96}, "RaspberryPi"},
{{0x15,0x8,0xA,0x53}, "Espruino"}
};
byte totalTags = sizeof(tags) / sizeof(RFIDTag);
//Variables
long lastMsg = 0;
char jsonChar[100];
String IDNo_buf="";
//=============================================================================
boolean pendingDisconnect = false;
void mqttConnectedCb(); // on connect callback
void mqttDisconnectedCb(); // on disconnect callback
void mqttDataCb(char* topic, byte* payload, unsigned int length); // on new message callback
WiFiClient wclient;
PubSubClient client(MQTTip, MQTTport, mqttDataCb, wclient);
//=============================================================================
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;
}
//=============================================================================
void mqttConnectedCb() {
Serial.println("connected");
// Once connected, publish an announcement...
client.publish("alex9ufo/outTopic/RFID/json", jsonChar, MQTTpubQos, true); // true means retain
// ... and resubscribe
client.subscribe("alex9ufo/inTopic", MQTTsubQos);
}
//=============================================================================
void mqttDisconnectedCb() {
Serial.println("disconnected");
}
//=============================================================================
void mqttDataCb(char* topic, byte* payload, unsigned int length) {
/*
you can convert payload to a C string appending a null terminator to it;
this is possible when the message (including protocol overhead) doesn't
exceeds the MQTT_MAX_PACKET_SIZE defined in the library header.
you can consider safe to do so when the length of topic plus the length of
message doesn't exceeds 115 characters
*/
char* message = (char *) payload;
message[length] = 0;
//String message;
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
Serial.println(message);
String message1;
for (int i = 0; i < length; i++) {
message1 = message1 + (char)payload[i]; //Conver *byte to String
}
//Serial.print(message);
if(message1 == "#on") {digitalWrite(BUILTIN_LED,LOW);} //LED on
if(message1 == "#off") {digitalWrite(BUILTIN_LED,HIGH);} //LED off
if(message1== "#flash") {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
// but actually the LED is on; this is because
for (int i=0; i <=5; i++){
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
delay(500);
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that HIGH is the voltage level
delay(500);
} //for (int
digitalWrite(BUILTIN_LED, HIGH);
} // if(message== "#flashLED")
/*
// Switch on the LED if an 1 was received as first character
if (message[0] == '0') {
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
Serial.println("Received 0 , Send LOW TO BuildIn_LED");
}
if (message[0] == '1') {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
// but actually the LED is on; this is because
Serial.println("Received 1 , Send HIGH TO BuildIn_LED");
}
if (message[0] == '2') {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
// but actually the LED is on; this is because
Serial.println("Received 2 , Flashing BuildIn_LED ");
for (int i=0; i <=5; i++){
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
delay(500);
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that HIGH is the voltage level
delay(500);
} //for (int
digitalWrite(BUILTIN_LED, HIGH);
} //if (message[0] == '2')
*/
}
//======================================================
void setup_wifi() {
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
//======================================================
void setup() {
Serial.begin(115200);
setup_wifi();
pinMode(BUILTIN_LED, OUTPUT);
Serial.println(F("Booting...."));
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522
Serial.println(F("Ready!"));
Serial.println(F("======================================================"));
Serial.println(F("Scan for Card and print UID:"));
}
//======================================================
void process_mqtt() {
if (WiFi.status() == WL_CONNECTED) {
if (client.connected()) {
client.loop();
} else {
// client id, client username, client password, last will topic, last will qos, last will retain, last will message
if (client.connect(MQTTid, MQTTuser, MQTTpsw, MQTTid "/status", 2, true, "0")) {
pendingDisconnect = false;
mqttConnectedCb();
}
}
} else {
if (client.connected())
client.disconnect();
}
if (!client.connected() && !pendingDisconnect) {
pendingDisconnect = true;
mqttDisconnectedCb();
}
}
//======================================================
void loop() {
process_mqtt();
long now = millis();
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) { // 如果出現新卡片就讀取卡片資料
byte *id = mfrc522.uid.uidByte; // 取得卡片的UID
byte idSize = mfrc522.uid.size; // 取得UID的長度
bool foundTag = false; // 是否找到紀錄中的標籤，預設為「否」。
byte i=0;
for (i=0; i<totalTags; i++) {
if (memcmp(tags[i].uid, id, idSize) == 0) {
Serial.print(F("Card UID:"));
Serial.println(tags[i].name); // 顯示標籤的名稱
foundTag = true; // 設定成「找到標籤了！」
break; // 退出for迴圈
}
}
if (!foundTag) { // 若掃描到紀錄之外的標籤，則顯示"Wrong card!"。
Serial.println("Wrong card!");
}
mfrc522.PICC_HaltA(); // 讓卡片進入停止模式
//Serial.println(tags[i].name);
IDNo_buf="";
IDNo_buf=tags[i].name;
// Convert data to JSON string
String json =
"{\"data\":{"
"\"RFID_No\": \"" + IDNo_buf + "\"}"
"}";
// Convert JSON string to character array
json.toCharArray(jsonChar, json.length()+1);
if (client.connected()) {
Serial.print("Publish message: ");
Serial.println(json);
// Publish JSON character array to MQTT topic
client.publish("alex9ufo/outTopic/RFID/json",jsonChar);
}
/*
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)) { //不同卡片 或是 等5秒
lastMsg = now;
Serial.print(F("Card UID:"));
Serial.println(IDNo);
//Serial.println(IDNo_buf);
IDNo_buf="";
IDNo_buf=IDNo;
// Convert data to JSON string
String json =
"{\"data\":{"
"\"RFID_No\": \"" + IDNo + "\"}"
"}";
// Convert JSON string to character array
json.toCharArray(jsonChar, json.length()+1);
if (client.connected()) {
Serial.print("Publish message: ");
Serial.println(json);
// Publish JSON character array to MQTT topic
client.publish("alex9ufo/outTopic/RFID/json",jsonChar);
}
} // if ((IDNo != IDNo_buf) || (now - lastMsg > 5000))
*/
} // if (mfrc522.PICC_IsNewCardPresent()
} //Loop
//======================================================
Node-RED程式
======================================================
[{"id":"36b9ac19.468a04","type":"mqtt in","z":"a47b5494.3eb618","name":"","topic":"alex9ufo/outTopic/RFID/json","qos":"2","broker":"40bf4d5e.0395f4","x":340,"y":140,"wires":[["485f884f.203ce8","f44190ce.e2ea1"]]},{"id":"f44190ce.e2ea1","type":"function","z":"a47b5494.3eb618","name":"jason+??蝘?,"func":"var date = new Date();\nvar h = date.getHours();\nvar m = date.getMinutes();\nvar s = date.getSeconds();\nif(h<10){\n h = '0'+h;\n}\nif(m<10){\n m = '0' + m;\n}\nif(s<10){\n s = '0' + s;\n}\nmsg.payload = 'Time:(' + h + ':' + m + ':' + s + ')'+ msg.payload ;\nreturn msg;\n","outputs":1,"noerr":0,"x":600,"y":100,"wires":[["b4dc5dae.5e7a5"]]},{"id":"b4dc5dae.5e7a5","type":"ui_text","z":"a47b5494.3eb618","group":"e4b1387a.934b88","order":0,"width":0,"height":0,"name":"","label":"MQTT_send_Message","format":"{{msg.payload}}","layout":"row-center","x":800,"y":100,"wires":[]},{"id":"485f884f.203ce8","type":"debug","z":"a47b5494.3eb618","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":590,"y":180,"wires":[]},{"id":"cbe61db9.a111f","type":"mqtt out","z":"a47b5494.3eb618","name":"","topic":"alex9ufo/inTopic","qos":"1","retain":"false","broker":"40bf4d5e.0395f4","x":560,"y":260,"wires":[]},{"id":"fdce570a.70c9a8","type":"ui_button","z":"a47b5494.3eb618","name":"","group":"e4b1387a.934b88","order":0,"width":0,"height":0,"passthru":false,"label":"ON_LED","color":"white","bgcolor":"","icon":"fa-circle","payload":"#on","payloadType":"str","topic":"","x":280,"y":260,"wires":[["cbe61db9.a111f","be2f332d.8a81c"]]},{"id":"7789eb7e.2785d4","type":"ui_button","z":"a47b5494.3eb618","name":"","group":"e4b1387a.934b88","order":0,"width":0,"height":0,"passthru":false,"label":"off_LED","color":"black","bgcolor":"","icon":"fa-circle-o","payload":"#off","payloadType":"str","topic":"","x":280,"y":320,"wires":[["cbe61db9.a111f","be2f332d.8a81c"]]},{"id":"b13346c4.b6fb38","type":"ui_button","z":"a47b5494.3eb618","name":"","group":"e4b1387a.934b88","order":0,"width":0,"height":0,"passthru":false,"label":"flash_LED","color":"black","bgcolor":"","icon":"fa-circle-o","payload":"#flash","payloadType":"str","topic":"","x":290,"y":380,"wires":[["cbe61db9.a111f","be2f332d.8a81c"]]},{"id":"be2f332d.8a81c","type":"debug","z":"a47b5494.3eb618","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":550,"y":360,"wires":[]},{"id":"40bf4d5e.0395f4","type":"mqtt-broker","broker":"broker.mqtt-dashboard.com","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":15,"cleansession":true,"birthQos":"0","willQos":"0"},{"id":"e4b1387a.934b88","type":"ui_group","z":"","name":"Control led ESP8266 (ESP32)","tab":"8b6381a9.6f9d6","order":1,"disp":true,"width":"15","collapse":false},{"id":"8b6381a9.6f9d6","type":"ui_tab","name":"Tab 1","icon":"dashboard","order":1}]
ESP8266程式感應後 將16進制卡號 變成代號
//==================================
//先執行RFID_2程式確認卡號再來設定
// 初始化結構資料
// 將卡號變成代號Arduino....Raspberry Pi.....Espruino
//==================================
struct RFIDTag tags[] = { // 初始化結構資料
{{0x70,0x21,0xED,0x10}, "Alex9ufo"},
{{0x44,0x51,0xBB,0x96}, "RaspberryPi"},
{{0x15,0x8,0xA,0x53}, "Espruino"}
};
程式RFID_2.ino
=================================================
/*
Many thanks to nikxha from the ESP8266 forum
*/
#include <ESP8266WiFi.h>
#include <SPI.h>
#include <MFRC522.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 = "pts6662594";
//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); // 建立MFRC522物件
void setup() {
Serial.begin(9600);
Serial.println("RFID reader is ready!");
SPI.begin();
mfrc522.PCD_Init(); // 初始化MFRC522讀卡機模組
}
void loop() {
// 確認是否有新卡片
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
byte *id = mfrc522.uid.uidByte; // 取得卡片的UID (第20行)
byte idSize = mfrc522.uid.size; // 取得UID的長度
Serial.print("PICC type: "); // 顯示卡片類型
// 根據卡片回應的SAK值（mfrc522.uid.sak）判斷卡片類型
MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak); // (第25行)
Serial.println(mfrc522.PICC_GetTypeName(piccType));
Serial.print("UID Size: "); // 顯示卡片的UID長度值
Serial.println(idSize);
for (byte i = 0; i < idSize; i++) { // 逐一顯示UID碼
Serial.print("id[");
Serial.print(i);
Serial.print("]: ");
Serial.println(id[i], HEX); // 以16進位顯示UID值
}
Serial.println();
mfrc522.PICC_HaltA(); // 讓卡片進入停止模式
}
}
//=============================================================================
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