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--- pm:prj2024:vstoica:vlad_toma.iliescu [2024/05/25 22:35]
vlad_toma.iliescu [Software Design]
+++ pm:prj2024:vstoica:vlad_toma.iliescu [2024/05/26 12:17] (current)
vlad_toma.iliescu [Download]
@@ Line 12: / Line 12: @@
 <html>
 <head>
-<title>ParkingSensorDiagram.html</title>
+<title>ParkingSensorDiagram.drawio.html</title>
 <meta charset="utf-8"/>
 </head>
 <body>
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 <script type="text/javascript" src="https://app.diagrams.net/js/viewer-static.min.js"></script>
 </body>
 </html>
 Senzorii HC-SR04 transmit informatia colectata catre microcontroller. Acesta va transmite informatia catre LCD, va seta frecventa buzzer-ului si va aprinde LED-ul corespunzator senzorului.
@@ Line 26: / Line 27: @@
 ===== Hardware Design =====
-{{pm:prj2024:vstoica:circuit_afterBVLAD.png?800}}
+{{pm:prj2024:vstoica:vlad_toma.iliescu:final.png?800}}
 Componente utilizate:
@@ Line 36: / Line 37: @@
   * LCD 1602 IIC/I2C
   * Buzzer
+  * Button
-<note tip>
+Nimic detectat:
-Aici puneţi tot ce ţine de hardware design:
-  * listă de piese
+{{pm:prj2024:vstoica:vlad_toma.iliescu:nothing.jpg?800}}
-  * scheme electrice (se pot lua şi de pe Internet şi din datasheet-uri, e.g. http://www.captain.at/electronic-atmega16-mmc-schematic.png)
-  * diagrame de semnal
+Un obiect detectat la o distanta mai mare de 30 cm:
-  * rezultatele simulării
-</note>
+{{pm:prj2024:vstoica:vlad_toma.iliescu:medium.jpg?800}}
+Un obiect detectat la o distanta mai mica de 30cm:
+{{pm:prj2024:vstoica:vlad_toma.iliescu:close.jpg?800}}
+Doua obiecte detectate, la distante diferite:
+{{pm:prj2024:vstoica:vlad_toma.iliescu:button.jpg?800}}
+Este oprit prin intrerupere:
+{{pm:prj2024:vstoica:vlad_toma.iliescu:off.jpg?800}}
 ===== Software Design =====
@@ Line 64: / Line 78: @@
     PORTB &= ~_BV(TRIG);
 }
-<\code>
+</code>
 Pinul de trigger este put pe HIGH (1) pentru 10 microsecunde, apoi pus inapoi pe LOW (0).
@@ Line 87: / Line 102: @@
         return TCNT1 / 58;
 }
-<\code>
+</code>
 Pinul corespunztor senzorului asteapta semnalul trimis de trigger si calculeaza distanta.
-Deoarece, pinii PWM de pe microcontroller sunt limitati, am folosit acelasi pin de trigger pentru ambii senzori. Astfel, pinii ce "asculta" semnalul vor face cu randul pentru a putea detecta amandoi distanta.
+Deoarece, pinii PWM de pe microcontroller sunt limitati, am folosit acelasi pin de trigger pentru ambii senzori. Astfel, pinii ce "asculta" semnalul vor face cu randul pentru a putea detecta amandoi distanta. Pentru a calcula timpul am folosti Timer1.
-<note tip>
+. Buton si LED
-Descrierea codului aplicaţiei (firmware):
+LED-ul isi schimba culoarea din verde in rosu in functie de distanta minima. Daca distanta minima este mai mica de 30, LED-ul va fi rosu, altfel soferul stie ca nu prea mai are spatiu. Daca distanta minima este intre 30 si 50, LED ul va fi verde, astfel soferul stie ca mai are putin spatiu. Daca distanta este mai mare de 50, LED-ul va fi stins.
-  * mediu de dezvoltare (if any) (e.g. AVR Studio, CodeVisionAVR)
+<code c++>
-  * librării şi surse 3rd-party (e.g. Procyon AVRlib)
+void set_color(uint16_t distance) {
-  * algoritmi şi structuri pe care plănuiţi să le implementaţi
+    if(active) {
-  * (etapa 3) surse şi funcţii implementate
+        if(distance < 20) {
-</note>
+            PORTD |= _BV(RED); // Turn on red LED
+            PORTD &= ~_BV(GREEN); // Turn off green LED
+        } else if (distance < 50){
+            PORTD &= ~_BV(RED); // Turn off red LED
+            PORTD |= _BV(GREEN); // Turn on green LED
+        } else {
+           turn_off_LED();
+        }
+    } else {
+        turn_off_LED();
+    }
+}
+</code>
+Butonul poate aprinde sau stinge LED-ul si Buzzer-ul. Acest lucru a fost facut prin intrerupere.
+<code c++>
+ISR(INT0_vect) {
+    if(button_debounce_count == 0) {
+        active ^= 1;
+        button_debounce_count = 100;
+    }
+}
+</code>
+Am facut si debouncing pentru buton:
+<code>
+ISR(TIMER2_COMPA_vect) {
+    static uint8_t last_button_state = 0;
+    uint8_t current_button_state = (PIND & _BV(BUTTON)) == 0;
+    if (button_debounce_count > 0) {
+        --button_debounce_count;
+        if (button_debounce_count == 0) {
+            if (current_button_state != button_state) {
+                button_state = current_button_state;
+                last_button_state = current_button_state;
+            }
+        }
+    }
+}
+</code>
+M-am folosti de timer2 pentru debouncing.
+. Buzzer
+Pentru buzzer m-am folosti de timer0 setat pe Fast PWM cu Clear on Compare. Astfel, am setat TCCR0B pentru a-l porni/opri.
+<code c++>
+void start_buzzer(void) {
+    // Turn on buzzer
+    TCCR0B |= _BV(CS01) | _BV(CS00); // Set prescaler to 64
+}
+void stop_buzzer(void) {
+    // Turn off buzzer
+    TCCR0B &= ~_BV(CS01) & ~_BV(CS00); // Set prescaler to 0
+}
+void ping_buzzer(uint8_t time) {
+    start_buzzer();
+    _delay_ms(time);
+    stop_buzzer();
+}
+</code>
+Cea mai mare problema a fost LCD-ul, nu pentru ca nu mergea, dar a fost cel mai greu de implementat. Alta problema a fost numarul de pini de PWM disponimbil. Am improvizat prin folosirea unui singur pin Trigger pentru ambii senzori ultrasonici.
 ===== Rezultate Obţinute =====
-<note tip>
+Am invatat cum sa ma documentez pentru compatibilitatea componentelor pentru a putea alege componentele potrivite proiectului. Dupa alegerea componentelor, am realizat cat de usor este codul Arduino fata de codul AVR. Codul arduino a fost facut in 2 ore, in timp ce codul AVR a fost facut in 2 zile.
-Care au fost rezultatele obţinute în urma realizării proiectului vostru.
-</note>
+Am perfectionat lucrul cu registrii prin urmarirea atat datasheet-ului microcontroller-ului cat si diferitele documentatii ale celorlalte componente.
 ===== Concluzii =====
+A fost un proiect interesant, si chiar util din punctul meu de vedere. Acesta ar putea fi folosit la o masina (desi nu recomand deoarece este cam mare). Initial am crezut ca va fi mult mai dificil de "construit" si implementat. Au fost si parti usoare de care am trecut repede, dar si parti mai grele cu care m-am luptat cateva zile.
 ===== Download =====
-<note warning>
+{{:pm:prj2024:vstoica:vlad_toma.iliescu:ParkingSensor_ILIESCU_Vlad-Toma.zip|}}
-O arhivă (sau mai multe dacă este cazul) cu fişierele obţinute în urma realizării proiectului: surse, scheme, etc. Un fişier README, un ChangeLog, un script de compilare şi copiere automată pe uC crează întotdeauna o impresie bună ;-).
-Fişierele se încarcă pe wiki folosind facilitatea **Add Images or other files**. Namespace-ul în care se încarcă fişierele este de tipul **:pm:prj20??:c?** sau **:pm:prj20??:c?:nume_student** (dacă este cazul). **Exemplu:** Dumitru Alin, 331CC -> **:pm:prj2009:cc:dumitru_alin**.
+OR Download/View the code using GitHub:
-</note>
+https://github.com/vladtoma2003/ParkingSensor-Atmega328P
 ===== Jurnal =====
-<note tip>
+* Am ales tema.
-Puteți avea și o secțiune de jurnal în care să poată urmări asistentul de proiect progresul proiectului.
+* M-am informat de componentele necesare si le-am cumparat.
-</note>
+* Am facut schema in TinkerCad.
+* Am asamblat proiectul folosindu-ma de schema de pe TinkerCad.
+* Am facut codul Arduino pentru a testa componentele.
+* Am facut si codul AVR in Platform IO.
 ===== Bibliografie/Resurse =====
-<note>
+https://handsontec.com/dataspecs/sensor/SR-04-Ultrasonic.pdf
-Listă cu documente, datasheet-uri, resurse Internet folosite, eventual grupate pe **Resurse Software** şi **Resurse Hardware**.
-</note>
-<html><a class="media mediafile mf_pdf" href="?do=export_pdf">Export to PDF</a></html>
+https://content.arduino.cc/assets/Atmel-7810-Automotive-Microcontrollers-ATmega328P_Datasheet.pdf
+https://github.com/denisgoriachev/liquid_crystal_i2c_avr/tree/master
+https://github.com/gpg/wk-misc/blob/master/ebus/i2c-lcd.c