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--- pm:prj2024:avaduva:stefan.dascalu0512 [2024/05/05 20:16]
stefan.dascalu0512 created
+++ pm:prj2024:avaduva:stefan.dascalu0512 [2024/05/27 20:26] (current)
stefan.dascalu0512 [Software Design]
@@ Line 5: / Line 5: @@
 ===== Descriere generală =====
-{{wiki:dokuwiki-128.png}}
+{{https://ocw.cs.pub.ro/courses/_media/pm/prj2024/avaduva/untitled_diagram.drawio.png}}
+Sistemul folosește un Arduino Uno Rev4 ca unitate centrală de control. Un senzor optic de amprentă este conectat la Arduino prin UART (Universal Asynchronous Receiver-Transmitter) pentru a colecta și procesa amprentele digitale.
+Arduino comunică cu un display LCD 1602 prin I2C (Inter-Integrated Circuit) pentru a afișa informații despre statusul sistemului și instrucțiuni pentru utilizator. De asemenea, există trei butoane conectate la pinii GPIO (General Purpose Input/Output) ai Arduino-ului: un buton pentru atribuirea amprentei digitale (Button Assign FP), un buton pentru ștergerea amprentei (Button Delete FP) și un buton pentru asocierea cu telefonul mobil (Button Pair Phone).
+Comunicarea între sistem și telefonul mobil se realizează prin WiFi, permitând utilizatorului să gestioneze accesul și configurările sistemului direct de pe dispozitivul său mobil. Aceasta include posibilitatea de a adăuga sau elimina amprente, precum și de a verifica statusul lăcatului prin intermediul unei aplicații mobile.
 ===== Hardware Design =====
-<note tip>
+|                             ^ Datasheet
-Aici puneţi tot ce ţine de hardware design:
+^ Arduino UNO rev4            | https://docs.arduino.cc/hardware/uno-r4-wifi/ |
-  * listă de piese
+^ Senzor optic de amprenta    | https://learn.adafruit.com/adafruit-optical-fingerprint-sensor/overview |
-  * scheme electrice (se pot lua şi de pe Internet şi din datasheet-uri, e.g. http://www.captain.at/electronic-atmega16-mmc-schematic.png)
+^ LCD 1602                    | n-am gasit link bun |
-  * diagrame de semnal
+^ Servo Motor                 | https://www.amazon.in/Robodo-Electronics-Tower-Micro-Servo/dp/B00MTFFAE0 |
-  * rezultatele simulării
-</note>
+{{https://ocw.cs.pub.ro/courses/_media/pm/prj2024/avaduva/schema_lacat.png}}
 ===== Software Design =====
+Mediu de dezvoltare: **Arduino IDE**
+Librarii folosite: **Adafruit fingerprint**, **LCD I2C**, **Arduino IoT Cloud**
+Algoritmi si structuri folosite:
+) Generator cheie privata pentru conectare telefon
+) Busy waiting pt asteptarea unei aprente pt assign/remove
+) Intreruperi la schimbarea variabelelor unLock si secCod (variable comune cu aplicatia)
+<code>
+#include <Adafruit_Fingerprint.h>
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+#include <Servo.h>
+#include "thingProperties.h"
+#include <ArduinoIoTCloud.h>
+#include <Arduino_ConnectionHandler.h>
+#if (defined(__AVR__) || defined(ESP8266)) && !defined(__AVR_ATmega2560__)
+// For UNO and others without hardware serial, we must use software serial...
+// pin #2 is IN from sensor (GREEN wire)
+// pin #3 is OUT from arduino  (WHITE wire)
+// Set up the serial port to use softwareserial..
+SoftwareSerial mySerial(2, 3);
+#else
+// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
+// #0 is green wire, #1 is white
+#define mySerial Serial1
+#endif
+Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+uint8_t id;
+int state = 0;
+const int assignBtn = 13;
+const int removeBtn = 12;
+const int pairBtn = 11;
+int btn1 = 0;
+int btn2 = 0;
+int btn3 = 0;
+Servo myServo;
+int fgrp = -1;
+int toRm = -1;
+const char characters[] = "ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz0123456789";
+const int codeLength = 7;
+const int numberOfCodes = 5; // Number of codes to store
+char storedCodes[numberOfCodes][codeLength + 1]; // Array to store the codes
+int currentCodeIndex = 0; // Index to keep track of the current code
+char randomCode[codeLength + 1];
+bool paired = false;
+void setup()
+{
+  // Connect to Arduino Cloud
+  initProperties();
+  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
+  while (!ArduinoCloud.connected()) {
+    ArduinoCloud.update();
+    delay(500);
+  }
+  lcd.init();         // initialize the lcd
+  lcd.backlight();
+  pinMode(assignBtn, INPUT);
+  pinMode(removeBtn, INPUT);
+  pinMode(pairBtn, INPUT);
+  myServo.attach(9);
+  Serial.begin(9600);
+  while (!Serial);  // For Yun/Leo/Micro/Zero/...
+  delay(100);
+  Serial.println("\n\nAdafruit Fingerprint sensor enrollment");
+  // set the data rate for the sensor serial port
+  finger.begin(57600);
+  if (finger.verifyPassword()) {
+    Serial.println("Found fingerprint sensor!");
+  } else {
+    Serial.println("Did not find fingerprint sensor :(");
+    while (1) { delay(1); }
+  }
+  Serial.println(F("Reading sensor parameters"));
+  finger.getParameters();
+  Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
+  Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
+  Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
+  Serial.print(F("Security level: ")); Serial.println(finger.security_level);
+  Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
+  Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
+  Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
+  id = 1;
+  randomSeed(analogRead(0));
+}
+uint8_t readnumber(void) {
+  uint8_t num = 0;
+  while (num == 0) {
+    while (! Serial.available());
+    num = Serial.parseInt();
+  }
+  return num;
+}
+void loop()                     // run over and over again
+{
+  ArduinoCloud.update();
+  btn1 = digitalRead(assignBtn);
+  btn2 = digitalRead(removeBtn);
+  btn3 = digitalRead(pairBtn);
+  switch(state) {
+    case 0:
+      unLock = true;
+      myServo.write(0);
+      lcd.clear();
+      lcd.setCursor(0,0);
+      lcd.print("Open");
+      delay(10);
+      if(btn1 == HIGH) {
+        state = 1;
+      } else if(btn2 == HIGH) {
+        state = 2;
+      } else if(btn3 == HIGH) {
+        state = 3;
+      }
+      fgrp = getFingerprintIDez();
+      delay(50);
+      if(fgrp != -1) {
+        state = 4;
+      }
+      break;
+    case 1:
+      lcd.clear();
+      lcd.setCursor(0,0);
+      lcd.print("Assign Fingerprint");
+      while (! getFingerprintEnroll() );
+      state = 0;
+      break;
+    case 2:
+      lcd.clear();
+      lcd.setCursor(0,0);
+      lcd.print("Place Finger");
+      lcd.setCursor(0, 1);
+      lcd.print("to remove");
+      toRm = -1;
+      while(toRm == -1) {
+        toRm = getFingerprintIDez();
+        delay(50);
+      }
+      if(toRm != -1){
+        deleteFingerprint(toRm);
+        delay(50);
+        lcd.clear();
+        lcd.setCursor(0,0);
+        lcd.print("Finger Removed");
+        delay(500);
+      }else{
+        lcd.clear();
+        lcd.setCursor(0,0);
+        lcd.print("Finger not Removed");
+        delay(500);
+      }
+      state = 0;
+      break;
+    case 3:
+      generateRandomCode(randomCode, codeLength);
+      lcd.clear();
+      lcd.setCursor(0, 0);
+      lcd.print(randomCode);
+      delay(10000);
+      state = 0;
+      break;
+    case 4:
+      unLock = false;
+      lcd.clear();
+      lcd.setCursor(0, 0);
+      lcd.print("Locked");
+      delay(10);
+      myServo.write(90);
+      fgrp = getFingerprintIDez();
+      delay(50);
+      if(fgrp != -1) {
+        state = 0;
+      }
+      break;
+  }
+  // Serial.println("Ready to enroll a fingerprint!");
+  // Serial.println("Please type in the ID # (from 1 to 127) you want to save this finger as...");
+  // id = readnumber();
+  // if (id == 0) {// ID #0 not allowed, try again!
+  //    return;
+  // }
+  // Serial.print("Enrolling ID #");
+  // Serial.println(id);
+  // while (! getFingerprintEnroll() );
+}
+uint8_t deleteFingerprint(uint8_t id) {
+  uint8_t p = -1;
+  p = finger.deleteModel(id);
+  if (p == FINGERPRINT_OK) {
+    Serial.println("Deleted!");
+  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
+    Serial.println("Communication error");
+  } else if (p == FINGERPRINT_BADLOCATION) {
+    Serial.println("Could not delete in that location");
+  } else if (p == FINGERPRINT_FLASHERR) {
+    Serial.println("Error writing to flash");
+  } else {
+    Serial.print("Unknown error: 0x"); Serial.println(p, HEX);
+  }
+  return p;
+}
+// returns -1 if failed, otherwise returns ID #
+int getFingerprintIDez() {
+  uint8_t p = finger.getImage();
+  if (p != FINGERPRINT_OK)  return -1;
+  p = finger.image2Tz();
+  if (p != FINGERPRINT_OK)  return -1;
+  p = finger.fingerFastSearch();
+  if (p != FINGERPRINT_OK)  return -1;
+  // found a match!
+  Serial.print("Found ID #"); Serial.print(finger.fingerID);
+  Serial.print(" with confidence of "); Serial.println(finger.confidence);
+  return finger.fingerID;
+}
+uint8_t getFingerprintEnroll() {
+  int p = -1;
+  Serial.print("Waiting for valid finger to enroll as #"); Serial.println(id);
+  lcd.clear();
+  lcd.setCursor(0, 0);
+  lcd.print("Place Finger");
+  while (p != FINGERPRINT_OK) {
+    p = finger.getImage();
+    switch (p) {
+    case FINGERPRINT_OK:
+      Serial.println("Image taken");
+      break;
+    case FINGERPRINT_NOFINGER:
+      Serial.print(".");
+      break;
+    case FINGERPRINT_PACKETRECIEVEERR:
+      Serial.println("Communication error");
+      break;
+    case FINGERPRINT_IMAGEFAIL:
+      Serial.println("Imaging error");
+      break;
+    default:
+      Serial.println("Unknown error");
+      break;
+    }
+  }
+  // OK success!
+  p = finger.image2Tz(1);
+  switch (p) {
+    case FINGERPRINT_OK:
+      Serial.println("Image converted");
+      break;
+    case FINGERPRINT_IMAGEMESS:
+      Serial.println("Image too messy");
+      return p;
+    case FINGERPRINT_PACKETRECIEVEERR:
+      Serial.println("Communication error");
+      return p;
+    case FINGERPRINT_FEATUREFAIL:
+      Serial.println("Could not find fingerprint features");
+      return p;
+    case FINGERPRINT_INVALIDIMAGE:
+      Serial.println("Could not find fingerprint features");
+      return p;
+    default:
+      Serial.println("Unknown error");
+      return p;
+  }
+  Serial.println("Remove finger");
+  delay(2000);
+  p = 0;
+  while (p != FINGERPRINT_NOFINGER) {
+    p = finger.getImage();
+  }
+  Serial.print("ID "); Serial.println(id);
+  p = -1;
+  Serial.println("Place same finger again");
+  lcd.clear();
+  lcd.setCursor(0, 0);
+  lcd.print("Place Same");
+  lcd.setCursor(0, 1);
+  lcd.print("Finger");
+  while (p != FINGERPRINT_OK) {
+    p = finger.getImage();
+    switch (p) {
+    case FINGERPRINT_OK:
+      Serial.println("Image taken");
+      break;
+    case FINGERPRINT_NOFINGER:
+      Serial.print(".");
+      break;
+    case FINGERPRINT_PACKETRECIEVEERR:
+      Serial.println("Communication error");
+      break;
+    case FINGERPRINT_IMAGEFAIL:
+      Serial.println("Imaging error");
+      break;
+    default:
+      Serial.println("Unknown error");
+      break;
+    }
+  }
+  // OK success!
+  p = finger.image2Tz(2);
+  switch (p) {
+    case FINGERPRINT_OK:
+      Serial.println("Image converted");
+      break;
+    case FINGERPRINT_IMAGEMESS:
+      Serial.println("Image too messy");
+      return p;
+    case FINGERPRINT_PACKETRECIEVEERR:
+      Serial.println("Communication error");
+      return p;
+    case FINGERPRINT_FEATUREFAIL:
+      Serial.println("Could not find fingerprint features");
+      return p;
+    case FINGERPRINT_INVALIDIMAGE:
+      Serial.println("Could not find fingerprint features");
+      return p;
+    default:
+      Serial.println("Unknown error");
+      return p;
+  }
+  // OK converted!
+  Serial.print("Creating model for #");  Serial.println(id);
+  p = finger.createModel();
+  if (p == FINGERPRINT_OK) {
+    Serial.println("Prints matched!");
+  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
+    Serial.println("Communication error");
+    return p;
+  } else if (p == FINGERPRINT_ENROLLMISMATCH) {
+    Serial.println("Fingerprints did not match");
+    return p;
+  } else {
+    Serial.println("Unknown error");
+    return p;
+  }
+  Serial.print("ID "); Serial.println(id);
+  p = finger.storeModel(id);
+  if (p == FINGERPRINT_OK) {
+    Serial.println("Stored!");
+  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
+    Serial.println("Communication error");
+    return p;
+  } else if (p == FINGERPRINT_BADLOCATION) {
+    Serial.println("Could not store in that location");
+    return p;
+  } else if (p == FINGERPRINT_FLASHERR) {
+    Serial.println("Error writing to flash");
+    return p;
+  } else {
+    Serial.println("Unknown error");
+    return p;
+  }
+  id++;
+  lcd.clear();
+  lcd.setCursor(0,0);
+  lcd.print("Fingerprint OK");
+  delay(2000);
+  return true;
+}
-<note tip>
+void generateRandomCode(char *code, int length) {
-Descrierea codului aplicaţiei (firmware):
+  for (int i = 0; i < length; i++) {
-  * mediu de dezvoltare (if any) (e.g. AVR Studio, CodeVisionAVR)
+    int randomIndex = random(0, sizeof(characters) - 1);
-  * librării şi surse 3rd-party (e.g. Procyon AVRlib)
+    code[i] = characters[randomIndex];
-  * algoritmi şi structuri pe care plănuiţi să le implementaţi
+  }
-  * (etapa 3) surse şi funcţii implementate
+  code[length] = '\0'; // Null terminator for the string
-</note>
+}
+/*
+  Since UnLock is READ_WRITE variable, onUnLockChange() is
+  executed every time a new value is received from IoT Cloud.
+*/
+void onUnLockChange()  {
+  for (int i = 0; i < currentCodeIndex; i++){
+    if(storedCodes[i] == secCode){
+      if(unLock)
+        state = 0;
+      else
+        state = 4;
+    }
+  }
+}
+/*
+  Since SecCode is READ_WRITE variable, onSecCodeChange() is
+  executed every time a new value is received from IoT Cloud.
+*/
+void onSecCodeChange()  {
+  String tmp = String(randomCode);
+  Serial.println(tmp);
+  Serial.println(secCode);
+  if (tmp == secCode) {
+    secCode.toCharArray(storedCodes[currentCodeIndex], codeLength + 1);
+    currentCodeIndex = (currentCodeIndex + 1) % numberOfCodes;
+    lcd.clear();
+    lcd.setCursor(0, 0);
+    lcd.print("Phone paired");
+    delay(3000);
+    paired = true;
+  }
+}
+</code>
 ===== Rezultate Obţinute =====