2024_113_RFID 作業2 ESP32 Arduino程式
const char broker[] = "test.mosquitto.org";
//const char broker[] = "broker.mqtt-dashboard.com";
int port = 1883;
const char *SubTopic1 = "alex9ufo/2024/RFID/LED_control";
const char *PubTopic2 = "alex9ufo/2024/RFID/LED_status";
const char *PubTopic3 = "alex9ufo/2024/RFID/RFID_UID";
//const char *PubTopic4 = "alex9ufo/2024/RFID/RFID_PICC";
ESP32 與 MFRC522連接方式 (硬體連接)
GND = GND 3.3V = 3.3V
The following table shows the typical pin layout used:
* MFRC522 ESP32
* Reader/PCD
* Signal Pin Pin
* RST/Reset RST GPIO27
* SPI SS SDA(SS) GPIO5
* SPI MOSI MOSI GPIO23
* SPI MISO MISO GPIO19
* SPI SCK SCK GPIO18
[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
(軟體)
Arduino 1.85版本 下載解壓縮或安裝
( 載點 https://www.npackd.org/p/ArduinoSA.arduino/1.8.15)
https://www.arduino.cc/en/software/OldSoftwareReleases Arduino 1.8.16
參考網址
https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/
File> Preferences
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
Tools > Board > Boards Manager…
Select the Port (if you don’t see the COM Port in your Arduino IDE, you need to install the CP210x USB to UART Bridge VCP Drivers):
SKetch --- Include Library ---Manage Libraries
// Wifi 與 MQttClient 程式庫
#include <ArduinoMqttClient.h>
#include <WiFi.h>
//#include "arduino_secrets1.h"
//MFRC522 程式庫
#include <SPI.h>
#include <MFRC522.h>
安裝程式庫
貼上下方 "程式" 按上傳
Press the Upload button in the Arduino IDE
按住板子上的 BOOT 按鈕，再點 Arduino 上傳鈕， 當編譯訊息出現 “Connecting...” 的時候，再放開 BOOT 按鈕。如此，應可成功上傳程式。
Arduino程式
//定義MFRC522 RFID read 與 ESP32 介面 接腳連接Pin assign
/* Wiring RFID RC522 module
==============================================================
GND = GND 3.3V = 3.3V
The following table shows the typical pin layout used:
* MFRC522 ESP32
* Reader/PCD
* Signal Pin Pin
* -----------------------------------
* RST/Reset RST GPIO27
* SPI SS SDA(SS) GPIO5
* SPI MOSI MOSI GPIO23
* SPI MISO MISO GPIO19
* SPI SCK SCK GPIO18
*
[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
=============================================================
*/
// Wifi 與 MQttClient 程式庫
#include <ArduinoMqttClient.h>
#include <WiFi.h>
//#include "arduino_secrets1.h"
//MFRC522 程式庫
#include <SPI.h>
#include <MFRC522.h>
//GPIO 2 D1 Build in LED
//#define LED 13 //定義LED接腳
int LED = 13;
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
//char ssid[] = "TOTOLINK_A3002MU"; // your network SSID (name)
//char pass[] = "24063173"; // your network password (use for WPA, or use as key for WEP)
// WiFi SSID password , SSID 和密碼進行Wi-Fi 設定
const char ssid[] = "alex9ufo"; // Enter your Wi-Fi name 修改成自己的wifi ssid
const char pass[] = "alex9981"; // Enter Wi-Fi password 修改成自己的wifi pwd
//char ssid[] = "ASUS_D0"; // your network SSID (name)
//char pass[] = "night_9754"; // your network password (use for WPA, or use as key for WEP)
WiFiClient wifiClient;
MqttClient mqttClient(wifiClient);
const char broker[] = "test.mosquitto.org";
//const char broker[] = "broker.mqtt-dashboard.com";
int port = 1883;
String json = "";
const char *SubTopic1 = "alex9ufo/2024/RFID/LED_control";
const char *PubTopic2 = "alex9ufo/2024/RFID/LED_status";
const char *PubTopic3 = "alex9ufo/2024/RFID/RFID_UID";
//const char *PubTopic4 = "alex9ufo/2024/RFID/RFID_PICC";
const char willTopic[] = "alex9ufo/2024/RFID/Starting";
//======================================================
#define RST_PIN 27 // 讀卡機的重置腳位
#define SS_PIN 5 // 晶片選擇腳位
MFRC522 mfrc522(SS_PIN, RST_PIN); // 建立MFRC522物件
MFRC522::MIFARE_Key key; // 儲存金鑰
MFRC522::StatusCode status;
//===========================================================
//布林代數 LED狀態 是否連上網路ESP32 ready ?
bool ledState = false;
bool atwork = false;
bool Send = false; //true
String LEDjson = "";
int Count= 0;
bool Flash = false; //true
bool Timer = false; //true
//===========================================================
void onMqttMessage(int messageSize) {
// we received a message, print out the topic and contents
Serial.print("Received a message with topic '");
Serial.print(mqttClient.messageTopic());
String Topic= mqttClient.messageTopic();
Serial.print("', duplicate = ");
Serial.print(mqttClient.messageDup() ? "true" : "false");
Serial.print(", QoS = ");
Serial.print(mqttClient.messageQoS());
Serial.print(", retained = ");
Serial.print(mqttClient.messageRetain() ? "true" : "false");
Serial.print("', length ");
Serial.print(messageSize);
Serial.println(" bytes:");
String message="";
// use the Stream interface to print the contents
while (mqttClient.available()) {
//Serial.print((char)mqttClient.read());
message += (char)mqttClient.read();
}
Serial.println(message);
message.trim();
Topic.trim();
if (Topic=="alex9ufo/2024/RFID/LED_control") {
if (message == "on") {
digitalWrite(LED, LOW); // Turn on the LED
//ledState = true; //ledState = ture HIGH
//設定 各個 旗號
LEDjson ="ON";
Send = true ;
Serial.print("LED =");
Serial.println(LEDjson);
}
if (message == "off" ) {
digitalWrite(LED, HIGH); // Turn off the LED
//ledState = false; //ledState = false LOW
LEDjson ="OFF";
Send = true ;
Serial.print("LED =");
Serial.println(LEDjson);
}
if (message == "flash" ) {
digitalWrite(LED, HIGH); // Turn off the LED
Flash = true;
Timer = false;
LEDjson ="FLASH";
Send = true ;
Serial.print("LED =");
Serial.println(LEDjson);
}
if (message == "timer" ) {
digitalWrite(LED, LOW); // Turn off the LED
Flash = false;
Timer = true;
LEDjson ="TIMER";
Send = true ;
Count= 11;
Serial.print("LED =");
Serial.println(LEDjson);
}
Serial.println();
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);
id +=" ";
}
return id;
}
//===========================================================
//副程式 setup wifi
void setup_wifi() {
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid); //print ssid
WiFi.begin(ssid, pass); //初始化WiFi 函式庫並回傳目前的網路狀態
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
} //假設 wifi 未連接 show ………
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
//===========================================================
//判斷 旗號Flash , Timer 是否為真
void LED_Message() {
//判斷 旗號 Flash / timer 是否為真 ? 閃爍 定時
if (Flash){
digitalWrite(LED, !digitalRead(LED));
delay(500);
if (digitalRead(LED))
ledState = true;
else
ledState = false;
} //(Flash)
if (Timer) {
digitalWrite(LED, LOW);
delay(500);
if (digitalRead(LED))
ledState = true;
else
ledState = false;
Count=Count-1;
if (Count == 0 ){
Timer=false;
digitalWrite(LED, HIGH);
ledState = false;
}
} //(Timer)
////判斷 旗號 Send 是否為真 回傳MQTT訊息到MQTT Broker
if (Send) {
// Convert JSON string to character array
Serial.print("Publish message: ");
Serial.println(LEDjson);
LEDjson.trim();
bool retained = false;
int qos = 1;
bool dup = false;
// Publish JSON character array to MQTT topic
mqttClient.beginMessage(PubTopic2, LEDjson.length(), retained, qos, dup); //LED Status
mqttClient.print(LEDjson);
mqttClient.endMessage();
Send = false; //處理過後 旗號 Send為假
}
}
//===========================================================
void setup() {
pinMode(LED, OUTPUT);
digitalWrite(LED, HIGH); // Turn off the LED initially
//Initialize serial and wait for port to open:
Serial.begin(115200); // Initialize serial communications with the PC
while (!Serial); // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
setup_wifi();
Serial.println("You're connected to the network");
Serial.println();
String willPayload = "ESP32 Start working....!";
bool willRetain = true;
int willQos = 1;
mqttClient.beginWill(willTopic, willPayload.length(), willRetain, willQos);
mqttClient.print(willPayload);
mqttClient.endWill();
Serial.print("Attempting to connect to the MQTT broker: ");
Serial.println(broker);
if (!mqttClient.connect(broker, port)) {
Serial.print("MQTT connection failed! Error code = ");
Serial.println(mqttClient.connectError());
while (1);
}
Serial.println("You're connected to the MQTT broker!");
Serial.println();
// set the message receive callback
mqttClient.onMessage(onMqttMessage);
Serial.print("Subscribing to topic: ");
Serial.println(SubTopic1);
// subscribe to a topic
// the second parameter sets the QoS of the subscription,
// the the library supports subscribing at QoS 0, 1, or 2
int subscribeQos = 1;
mqttClient.subscribe(SubTopic1, subscribeQos);
Serial.println();
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522
delay(4); // Optional delay. Some board do need more time after init to be ready, see Readme
//mfrc522.PCD_DumpVersionToSerial(); // Show details of PCD - MFRC522 Card Reader details
Serial.println(F("Scan PICC to see UID, SAK, type, and data blocks..."));
}
//===========================================================
void loop() {
// call poll() regularly to allow the library to receive MQTT messages and
// send MQTT keep alives which avoids being disconnected by the broker
mqttClient.poll();
LED_Message();
// to avoid having delays in loop, we'll use the strategy from BlinkWithoutDelay
// see: File -> Examples -> 02.Digital -> BlinkWithoutDelay for more info
unsigned long currentMillis = millis();
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
Serial.println(F("Please scan MIFARE Classic card..."));
// 確認是否有新卡片
byte *id = mfrc522.uid.uidByte; // 取得卡片的UID
byte idSize = mfrc522.uid.size; // 取得UID的長度
String Type;
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);
Type= mfrc522.PICC_GetTypeName(piccType);
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();
json="";
String json1=printHex(mfrc522.uid.uidByte, mfrc522.uid.size);
json1.toUpperCase();
json = json + json1;
json.trim();
bool retained = false;
int qos = 1;
bool dup = false;
mqttClient.beginMessage(PubTopic3, json.length(), retained, qos, dup);
mqttClient.print(json);
mqttClient.endMessage();
/*
json="";
json = "PICC type: ";
json = json + Type;
json.trim();
retained = false;
qos = 1;
dup = false;
mqttClient.beginMessage(PubTopic4, json.length(), retained, qos, dup);
mqttClient.print(json);
mqttClient.endMessage();
*/
Serial.println();
// Dump debug info about the card; PICC_HaltA() is automatically called
// 令卡片進入停止狀態
// Dump debug info about the card; PICC_HaltA() is automatically called
// mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1(); // stop encryption on PCD
}
}
////===========================================================
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