Modul III
Percobaan 5
1. Rangkai komponen sesuai percobaan dan yang
dipilih.
2. Buat program menggunakan Arduino IDE.
3. Transfer program yang telah dibuat ke Arduino Uno.
4. Uji coba program pada rangkaian percobaan sesuai dengan kondisi yang
diinginkan.
5. Proses selesai setelah uji coba berhasil dilakukan.
2. Hardware dan Diagram Blok
[Kembali]
a. Rangkaian Simulasi
b. Prinsip Kerja
Pada Percobaan 5 yaitu Komunikasi I2C adalah protokol komunikasi serial yang digunakan untuk mentransfer data antara berbagai perangkat dalam sebuah sistem. Prinsip kerjanya melibatkan dua perangkat, yaitu master dan slave, yang terhubung melalui dua saluran komunikasi, yaitu SDA (Serial Data Line) dan SCL (Serial Clock Line). Proses komunikasi dimulai dengan master mengirimkan sinyal start ke bus I2C, diikuti dengan pengiriman alamat slave yang dituju beserta bit yang menunjukkan operasi yang akan dilakukan (baca atau tulis). Setelah menerima konfirmasi dari slave, master mengirimkan data atau instruksi ke slave melalui bus I2C. Slave kemudian menerima data tersebut dan memberikan konfirmasi kembali kepada master. Komunikasi ditutup dengan master mengirimkan sinyal stop ke bus I2C. Dengan prinsip kerja ini, komunikasi I2C memungkinkan pertukaran data antara master dan slave dengan efisien dan andal dalam sebuah sistem. 4. Flowcharth dan Listing Program [Kembali]
a. Flowcharth
#include <Wire.h>
#define SLAVE_ADDRESS 9 // Slave Arduino address
#define BUTTON1 2 // Pin for the push button
#define BUTTON2 3
int buttonState1 = 0;
int buttonState2 = 0;
int buttonPrevState1 = 0;
int buttonPrevState2 = 0;
unsigned int counter = 0;
unsigned int count = 0;
void setup() {
Wire.begin(); // Initialize I2C communication
pinMode(BUTTON1, INPUT_PULLUP); // Set button pin as input with internal pull-up resistor
pinMode(BUTTON2, INPUT_PULLUP);
Serial.begin(9600); // Initialize serial communication for debugging
}
void loop() {
buttonState1 = digitalRead(BUTTON1);
buttonState2 = digitalRead(BUTTON2);
if (buttonState2 != buttonPrevState2){
if(buttonState2 == LOW){
count++;
}
delay(50);
}
buttonPrevState2 = buttonState2;
if(count > 3){
count = 0;
}
if(count % 2 == 0){
if (buttonState1 != buttonPrevState1) {
if (buttonState1 == LOW) {
// Button is pressed
counter++;
Wire.beginTransmission(SLAVE_ADDRESS);
Wire.write(counter); // Send command to the slave
Wire.endTransmission();
}
delay(50); // Debouncing delay
}
buttonPrevState1 = buttonState1;
if(counter > 3){
counter = 0;
}
}else if(count % 3 == 0){
Wire.endTransmission();
}
Serial.print(count); Serial.println(counter);
}
SLAVE:
#include <Wire.h>
#define LED_COUNT 8
#define LED_PIN_START 2 // Start pin for the LEDs
void setup() {
Serial.begin(9600);
Wire.begin(9); // Initialize I2C communication as Slave with address 9
Wire.onReceive(receiveEvent); // Register event for receiving data
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
pinMode(i, OUTPUT); // Set LED pins as output
}
}
void loop() {
// Nothing to do here, all actions are performed in the receiveEvent function
}
void receiveEvent(int numBytes) {
unsigned int command = Wire.read(); // Read incoming command from master
Serial.println(command);
delay(500);
if (command == 1) {
// Turn all LEDs ON
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, HIGH);
}
} else if (command == 2) {
// Turn all LEDs OFF
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, LOW);
}
} else if (command == 3) {
// Blink all LEDs
for (int j = 0; j < 5; j++) { // Repeat the blinking 5 times
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, HIGH);
delay(1000);
}
delay(500); // Delay for ON state
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, LOW);
delay(1000);
}
delay(500); // Delay for OFF state
}
}
}
#define LED_COUNT 8
#define LED_PIN_START 2 // Start pin for the LEDs
void setup() {
Serial.begin(9600);
Wire.begin(9); // Initialize I2C communication as Slave with address 9
Wire.onReceive(receiveEvent); // Register event for receiving data
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
pinMode(i, OUTPUT); // Set LED pins as output
}
}
void loop() {
// Nothing to do here, all actions are performed in the receiveEvent function
}
void receiveEvent(int numBytes) {
unsigned int command = Wire.read(); // Read incoming command from master
Serial.println(command);
delay(500);
if (command == 1) {
// Turn all LEDs ON
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, HIGH);
}
} else if (command == 2) {
// Turn all LEDs OFF
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, LOW);
}
} else if (command == 3) {
// Blink all LEDs
for (int j = 0; j < 5; j++) { // Repeat the blinking 5 times
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, HIGH);
delay(1000);
}
delay(500); // Delay for ON state
for (int i = LED_PIN_START; i < LED_PIN_START + LED_COUNT; i++) {
digitalWrite(i, LOW);
delay(1000);
}
delay(500); // Delay for OFF state
}
}
}
Modul 3 Percobaan 5 Komunikasi I2C
6. Video Demo[Kembali]
Download HMTL Klik disini
Download Gambar Hardware Klik disini
Download Gambar Simulasi Klik disini
Download Video Demo klik disini
Download Listing Program klik disini
Datasheet Arduino klik disini
Datasheet Push Button klik disini
Datasheet LED klik disini
Datasheet Resistor klik disini
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