first commit

src/main.cpp

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+#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";
+
+// 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
+    String url = "http://192.168.50.87:8111/api/timer/write/12345/" + uidString + "/" + String(timeWithMicroseconds) + "/";
+    debugPrint("to: " + 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);
+
+}