clear start app

README.md

@@ -4,13 +4,13 @@
 [https://randomnerdtutorials.com/esp32-mfrc522-rfid-reader-arduino/](https://randomnerdtutorials.com/esp32-mfrc522-rfid-reader-arduino/)
 
 
-| MFRC522 RFID Reader | ESP32 | Description |
+| MFRC522 RFID Reader | ESP32         | Description | Color  |
-|---------------------|-------|-------------|
+|---------------------|---------------|-------------|--------|
-| SDA | GPIO 5 | SPI signal input, I2C data line, or UART data input |
+| SDA | GPIO 5        | SPI signal input, I2C data line, or UART data input | blue   |
-| SCK | GPIO 18 | SPI clock |
+| SCK | GPIO 18       | SPI clock | brown  |
-| MOSI | GPIO 23 | SPI data input |
+| MOSI | GPIO 23       | SPI data input | grey   |
-| MISO | GPIO 19 | SPI master-in-slave-out, I2C serial clock, or UART serial output |
+| MISO | GPIO 19       | SPI master-in-slave-out, I2C serial clock, or UART serial output | white  |
-| IRQ | Don't connect | Interrupt pin; signals the microcontroller when an RFID tag is nearby |
+| IRQ | Don't connect | Interrupt pin; signals the microcontroller when an RFID tag is nearby | -      |
-| GND | GND | Ground connection |
+| GND | GND           | Ground connection | black  |
-| RST | GPIO 21 | LOW signal to put the module in power-down mode; send a HIGH signal to reset the module |
+| RST | GPIO 21       | LOW signal to put the module in power-down mode; send a HIGH signal to reset the module | yellow |
-| 3.3V | 3.3V | Power supply (2.5-3.3V) |
+| 3.3V | 3.3V          | Power supply (2.5-3.3V) | orange |

platformio.ini

@@ -14,6 +14,3 @@ board = esp32dev
 framework = arduino
 monitor_speed = 115200
 
-lib_deps =
-    arduino-libraries/NTPClient
-    miguelbalboa/MFRC522

src/backup.txt

@@ -0,0 +1,147 @@
+#include <Arduino.h>
+#include <Wire.h>
+#include <HTTPClient.h>
+#include <MFRC522v2.h>
+#include <MFRC522DriverSPI.h>
+#include <MFRC522DriverPinSimple.h>
+#include <MFRC522Debug.h>
+#include <WiFi.h>
+#include <NTPClient.h>
+#include <WiFiUdp.h>
+
+constexpr bool DEBUG = true;
+
+
+// pins
+constexpr int redLedPin = 2;
+constexpr int greenLedPin = 4;
+constexpr int cardLedPin = 12;
+constexpr int buzzerPin = 13;
+
+// wifi
+auto ssid = "ElaZereVsetko2g";
+auto password = "CoJeElaToJeEla";
+
+// API
+const String apiUrl = "http://192.168.50.87:8111/api/timer/write";
+const String timerId = "branka1";
+
+// NTP client
+WiFiUDP ntpUDP;
+// Europe/Prague timezone and update every 60 seconds
+NTPClient timeClient(ntpUDP, "pool.ntp.org", 3600, 60000);
+
+// vykradnuty kod netusim co to robi ale robi to
+MFRC522DriverPinSimple ss_pin(5); // Create digital pin driver
+MFRC522DriverSPI driver{ss_pin}; // Create SPI driver
+MFRC522 mfrc522{driver};         // Create MFRC522 instance
+
+void debugPrint(String const& msg, const bool newLine = true) {
+    if (DEBUG) {
+        if (newLine) {
+            Serial.println(msg);
+        } else {
+            Serial.print(msg);
+        }
+    }
+}
+
+void setup() {
+    Serial.begin(115200);
+    // cakaj na serial port
+    while (!Serial) {
+        delay(10);
+    }
+
+    // init pins
+    pinMode(redLedPin, OUTPUT);
+    pinMode(greenLedPin, OUTPUT);
+    pinMode(cardLedPin, OUTPUT);
+    pinMode(buzzerPin, OUTPUT);
+
+    // pripoj sa na wifi
+    debugPrint("Connecting to WiFi...");
+
+    WiFi.begin(ssid, password);
+    while (WiFi.status() != WL_CONNECTED) {
+        delay(1000);
+        debugPrint(".", false);
+    }
+    if (DEBUG) {
+        debugPrint(" connected!");
+    }
+
+    // Turn off the red LED and turn on the green LED
+    digitalWrite(redLedPin, LOW);
+    digitalWrite(greenLedPin, HIGH);
+
+    // Initialize NTP client
+    timeClient.begin();
+    timeClient.update();
+
+    // Print the current time
+    debugPrint("Current time: " + timeClient.getFormattedTime());
+
+    mfrc522.PCD_Init();
+
+    debugPrint("Cakam na kartu...");
+}
+
+void loop() {
+    // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
+    if (!mfrc522.PICC_IsNewCardPresent()) {
+        return;
+    }
+
+    // Select one of the cards.
+    if (!mfrc522.PICC_ReadCardSerial()) {
+        return;
+    }
+
+    // Get the current time in Unix time with microseconds
+    timeClient.update();
+    const unsigned long currentTime = timeClient.getEpochTime();
+    const unsigned long microseconds = micros() % 1000000;
+
+    // Format the time with microseconds
+    char timeWithMicroseconds[30];
+    snprintf(timeWithMicroseconds, sizeof(timeWithMicroseconds), "%lu.%06lu", currentTime, microseconds);
+
+    // Format the UID
+    String uidString = "";
+    for (byte i = 0; i < mfrc522.uid.size; i++) {
+        uidString += String(mfrc522.uid.uidByte[i], HEX);
+    }
+
+    debugPrint("send: " + uidString);
+    // Create the URL
+    char url[256]; // Make sure this is large enough for your URL
+    snprintf(url, sizeof(url), "%s/%s/%s/%s/",
+        apiUrl.c_str(),
+        timerId.c_str(),
+        uidString.c_str(),
+        timeWithMicroseconds);
+
+    debugPrint(url);
+    // Send the HTTP GET request
+    HTTPClient http;
+    http.begin(url);
+    int httpResponseCode = http.GET();
+    if (httpResponseCode > 0) {
+        debugPrint("HTTP Response code: " + String(httpResponseCode));
+    } else {
+        debugPrint("Error on HTTP request");
+    }
+    http.end();
+
+    // Turn on the card LED and buzzer
+    digitalWrite(cardLedPin, HIGH);
+    tone(buzzerPin, 2000);  // Generate 2000Hz tone
+    delay(500);  // Beep and light for 500 milliseconds
+    digitalWrite(cardLedPin, LOW);
+    noTone(buzzerPin);  // Stop the tone
+
+
+    delay(2000);
+
+}

src/main.cpp

@@ -1,92 +1,49 @@
 #include <Arduino.h>
-#include <Wire.h>
+
-#include <HTTPClient.h>
 #include <MFRC522v2.h>
 #include <MFRC522DriverSPI.h>
 #include <MFRC522DriverPinSimple.h>
 #include <MFRC522Debug.h>
-#include <WiFi.h>
-#include <NTPClient.h>
-#include <WiFiUdp.h>
 
 constexpr bool DEBUG = true;
 
+// Define the pins for the buzzer and the LED
+constexpr int buzzerPin = 2;
+constexpr int ledPin = 4;
 
-// pins
+// Create an instance of the MFRC522 driver
-constexpr int redLedPin = 2;
+MFRC522DriverPinSimple ss_pin(5);
-constexpr int greenLedPin = 4;
+MFRC522DriverSPI driver{ss_pin};
-constexpr int cardLedPin = 12;
+MFRC522 mfrc522{driver};
-constexpr int buzzerPin = 13;
 
-// wifi
+// define the functions
-auto ssid = "ElaZereVsetko2g";
+String getCardUID(MFRC522 &mfrc522);
-auto password = "CoJeElaToJeEla";
+void beepAndBlink(int duration, int count);
-
-// API
-const String apiUrl = "http://192.168.50.87:8111/api/timer/write";
-const String timerId = "branka1";
-
-// NTP client
-WiFiUDP ntpUDP;
-// Europe/Prague timezone and update every 60 seconds
-NTPClient timeClient(ntpUDP, "pool.ntp.org", 3600, 60000);
-
-// vykradnuty kod netusim co to robi ale robi to
-MFRC522DriverPinSimple ss_pin(5); // Create digital pin driver
-MFRC522DriverSPI driver{ss_pin}; // Create SPI driver
-MFRC522 mfrc522{driver};         // Create MFRC522 instance
-
-void debugPrint(String const& msg, const bool newLine = true) {
-    if (DEBUG) {
-        if (newLine) {
-            Serial.println(msg);
-        } else {
-            Serial.print(msg);
-        }
-    }
-}
 
 void setup() {
-    Serial.begin(115200);
+
-    // cakaj na serial port
+    if (DEBUG) {
-    while (!Serial) {
+        Serial.begin(115200);
-        delay(10);
+        while (!Serial);
     }
 
-    // init pins
+    // Init the pins
-    pinMode(redLedPin, OUTPUT);
+    pinMode(ledPin, OUTPUT);
-    pinMode(greenLedPin, OUTPUT);
-    pinMode(cardLedPin, OUTPUT);
     pinMode(buzzerPin, OUTPUT);
 
-    // pripoj sa na wifi
+    // Init the MFRC522 board
-    debugPrint("Connecting to WiFi...");
-
-    WiFi.begin(ssid, password);
-    while (WiFi.status() != WL_CONNECTED) {
-        delay(1000);
-        debugPrint(".", false);
-    }
-    if (DEBUG) {
-        debugPrint(" connected!");
-    }
-
-    // Turn off the red LED and turn on the green LED
-    digitalWrite(redLedPin, LOW);
-    digitalWrite(greenLedPin, HIGH);
-
-    // Initialize NTP client
-    timeClient.begin();
-    timeClient.update();
-
-    // Print the current time
-    debugPrint("Current time: " + timeClient.getFormattedTime());
-
     mfrc522.PCD_Init();
 
-    debugPrint("Cakam na kartu...");
+
+    // ready
+    // turn on the LED and beep the buzzer
+    digitalWrite(ledPin, HIGH);
+    beepAndBlink(100, 5);
 }
 
+
+
+
 void loop() {
     // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
     if (!mfrc522.PICC_IsNewCardPresent()) {
@@ -98,50 +55,43 @@ void loop() {
         return;
     }
 
-    // Get the current time in Unix time with microseconds
-    timeClient.update();
-    const unsigned long currentTime = timeClient.getEpochTime();
-    const unsigned long microseconds = micros() % 1000000;
 
-    // Format the time with microseconds
+    // Read and print the UID
-    char timeWithMicroseconds[30];
+    Serial.println("Card UID:" + getCardUID(mfrc522));
-    snprintf(timeWithMicroseconds, sizeof(timeWithMicroseconds), "%lu.%06lu", currentTime, microseconds);
 
-    // Format the UID
+    // Additional actions when a card is read
+    beepAndBlink(1000, 1);
+
+    // delay for a while to avoid reading the same card multiple times
+    delay(2000);
+}
+
+
+// Helper functions
+
+// return the UID of the card as a string
+String getCardUID(const MFRC522 &mfrc522) {
     String uidString = "";
     for (byte i = 0; i < mfrc522.uid.size; i++) {
+        uidString += mfrc522.uid.uidByte[i] < 0x10 ? " 0" : "";
         uidString += String(mfrc522.uid.uidByte[i], HEX);
     }
+    return uidString;
+}
 
-    debugPrint("send: " + uidString);
+// beep and blink the LED for a number of times with a duration
-    // Create the URL
+void beepAndBlink(const int duration=1000, const int count=1) {
-    char url[256]; // Make sure this is large enough for your URL
+    for (int i = 0; i < count; i++) {
-    snprintf(url, sizeof(url), "%s/%s/%s/%s/",
+        digitalWrite(ledPin, LOW);  // Turn on the red LED
-        apiUrl.c_str(),
+        digitalWrite(buzzerPin, HIGH);
-        timerId.c_str(),
+        delay(duration);                    // Wait for a second
-        uidString.c_str(),
+        digitalWrite(ledPin, HIGH);   // Turn off the red LED
-        timeWithMicroseconds);
+        digitalWrite(buzzerPin, LOW);
 
-    debugPrint(url);
+        // wait for a while before the next beep only if it's not the last beep
-    // Send the HTTP GET request
+        if (i < count - 1)
-    HTTPClient http;
+        {
-    http.begin(url);
+            delay(duration);
-    int httpResponseCode = http.GET();
+        }
-    if (httpResponseCode > 0) {
-        debugPrint("HTTP Response code: " + String(httpResponseCode));
-    } else {
-        debugPrint("Error on HTTP request");
     }
-    http.end();
-
-    // Turn on the card LED and buzzer
-    digitalWrite(cardLedPin, HIGH);
-    tone(buzzerPin, 2000);  // Generate 2000Hz tone
-    delay(500);  // Beep and light for 500 milliseconds
-    digitalWrite(cardLedPin, LOW);
-    noTone(buzzerPin);  // Stop the tone
-
-
-    delay(2000);
-
 }