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--- pm:prj2023:alexau:smart-temperature-alarm [2023/05/27 11:54]
andrei_stefan.fotin [Software Design]
+++ pm:prj2023:alexau:smart-temperature-alarm [2023/05/27 12:04] (current)
andrei_stefan.fotin [Software Design]
@@ Line 35: / Line 35: @@
 ===== Software Design =====
 <note tip>
-Descrierea software a aplicaţiei:
 Aplicatia utilizeaza 2 Arduino Uno, care comunica prin I2C.
 Fiecare are rolul sau:
- * Slave-ul primeste temperatura de la Master si o afiseaza pe LCD.
+  * Slave-ul primeste temperatura de la Master si o afiseaza pe LCD.
- * Master-ul reprezinta efectiv alarma de temperatura.
+  * Master-ul reprezinta efectiv alarma de temperatura.
-</note>
-<note tip>
+Mediu de dezvoltare:
-Slave Source Code
+  * Arduino IDE
+  * Tinkercad
-/** SLAVE **/
-#include <LiquidCrystal.h>
-#include <Wire.h>
-// The slave address to which this master will send data
-#define I2C_SLAVE_ADDRESS 0x09
-// The byte variable in which I2C reads from the master are performed
-int i;
-signed int aux;
-int temp;
-const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
-LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
-void setup() {
-    lcd.begin(16, 2);
-    lcd.print("Buna ziua!");
-  Wire.begin(I2C_SLAVE_ADDRESS);
-}
-void receiveEvent(int numBytes) {
-    i = 3;
-    temp = 0;
-    while (0 <= i) {
-        aux = Wire.read();
-        if (aux > 127) {
-          aux = aux - 256;
-        }
-      temp = temp + pow(10, i) * aux;
-        i--;
-    }
-}
-void loop() {
-    Wire.onReceive(receiveEvent);
-    if (temp != 0) {
-        lcd.clear();
-      lcd.print("Temp refresh");
-      delay(500);
-        lcd.clear();
-      lcd.print(temp / 100);
-      lcd.print(".");
-    lcd.print(abs(temp % 100));
-      lcd.print(" grade C");
-        delay(5000);
-    }
-}
 </note>
-<note tip>
+===== Source Code & Documentation =====
-Master Source Code
+https://github.com/StefanFotin23/Smart-Temperature-Alarm-Arduino
-/** MASTER **/
-#include <Wire.h>
-#include <Keypad.h>
-// The slave address to which this master will send data
-#define I2C_SLAVE_ADDRESS 0x09
-// Hardware interrupt time (s)
-#define INTERRUPT_TIME 5
-// KEYPAD MACROS
-const byte numRows = 4; // number of rows on the keypad
-const byte numCols = 4; // number of columns on the keypad
-// keymap defines the key pressed according to the row and columns just as appears on the keypad
-char keymap[numRows][numCols] =
-    {
-        {'1', '2', '3', 'A'},
-        {'4', '5', '6', 'B'},
-        {'7', '8', '9', 'C'},
-        {'*', '0', '#', 'D'}};
-// Code that shows the the keypad connections to the arduino terminals
-byte rowPins[numRows] = {9, 8, 7, 6}; // Rows 0 to 3
-byte colPins[numCols] = {5, 4, 3, 2}; // Columns 0 to 3
-// initializes an instance of the Keypad class
-Keypad myKeypad = Keypad(makeKeymap(keymap), rowPins, colPins, numRows, numCols);
-char keypressed;
-// TEMPERATURE ALARM MACROS
-int REF_HIGH_TEMP = 24;
-int aux_temp;
-float temp;
-int out;
-float vout;
-float vout1;
-int LED = 13;
-int piezo = 10;
-int o1, o2, o3, o4;
-volatile bool timerFlag = false;
-bool temperature_set_flag = false;
-bool first_digit_input = false;
-bool second_digit_input = false;
-void setup()
-{
-    Serial.begin(9600);
-    pinMode(A1, INPUT);
-    pinMode(LED, OUTPUT);
-    pinMode(piezo, OUTPUT);
-    // Configure Timer1
-    cli();      // Disable interrupts
-    TCCR1B = 0; // Clear TCCR1B register
-    TCNT1 = 0;  // Initialize counter value to 0
-    // Calculate the compare match value for 5 seconds at prescaler 1024
-    // The formula is: compareMatch = (clockFreq * interruptDuration) / prescaler - 1
-    // Assuming a clock frequency of 16MHz
-    uint16_t compareMatch = ((16000000UL * INTERRUPT_TIME) / 1024) - 1;
-    OCR1A = compareMatch;                // Set compare match value
-    TCCR1B |= (1 << WGM12);              // Set CTC mode
-    TCCR1B |= (1 << CS12) | (1 << CS10); // Set prescaler to 1024
-    TIMSK1 |= (1 << OCIE1A);             // Enable Timer1 compare interrupt
-    Wire.begin();
-    sei(); // Enable interrupts
-}
-bool isDigit(char keypressed){
-    if (keypressed >= 48 && keypressed <= 57) {
-        return true;
-    }
-    return false;
-}
-void loop()
-{
-    keypressed = myKeypad.getKey();
-    if (keypressed == 'A')
-    {
-        Serial.println("Setting the ref temp");
-        temperature_set_flag = false;
-        while (temperature_set_flag == false)
-        {
-            first_digit_input = false;
-            second_digit_input = false;
-            while (first_digit_input == false)
-            {
-                keypressed = myKeypad.getKey();
-                if (keypressed != NO_KEY && isDigit(keypressed))
-                {
-                    //transform from ascii to number
-                    aux_temp = (keypressed - 48) * 10;
-                    Serial.println(keypressed);
-                    first_digit_input = true;
-                }
-            }
-            while (second_digit_input == false)
-            {
-                keypressed = myKeypad.getKey();
-                if (keypressed != NO_KEY && isDigit(keypressed))
-                {
-                    aux_temp = aux_temp + (keypressed - 48);
-                    REF_HIGH_TEMP = aux_temp;
-                    Serial.println(keypressed);
-                    second_digit_input = true;
-                }
-            }
-            Serial.print("Ref temperature set to: ");
-            Serial.println(REF_HIGH_TEMP);
-            temperature_set_flag = true;
-        }
-    }
-    if (timerFlag)
-    {
-        timerFlag = false;
-        vout = analogRead(A1);
-        vout1 = (vout / 1023.0) * 5000;
-        temp = (vout1 - 500) / 10.0;
-        if (temp >= REF_HIGH_TEMP)
-        {
-            digitalWrite(LED, HIGH);
-            digitalWrite(piezo, HIGH);
-        }
-        else
-        {
-            digitalWrite(LED, LOW);
-            digitalWrite(piezo, LOW);
-        }
-        out = temp * 100;
-        o1 = out / 1000;
-        o2 = (out / 100) % 10;
-        o3 = (out / 10) % 10;
-        o4 = out % 10;
-        Wire.beginTransmission(I2C_SLAVE_ADDRESS);
-        Wire.write(o1);
-        Wire.write(o2);
-        Wire.write(o3);
-        Wire.write(o4);
-        Wire.endTransmission();
-    }
-}
-// Timer1 compare match interrupt service routine
-ISR(TIMER1_COMPA_vect)
-{
-    timerFlag = true;
-}
-\</note>