Percobaan 2
Komunikasi SPI Menggunakan Arduino
1. Rangkai komponen sesuai percobaan dan kondisi yang dipilih.
2. Buat program menggunakan Arduino IDE.
3. Compile program yang telah dibuat lalu Upload ke dalam Arduino Uno.
4. Uji coba program pada rangkaian percobaan sesuai dengan kondisi yang diinginkan.
5. Selesai
2. Hardware dan Diagram Blok
[Kembali]
1. Arduino Uno
2. Seven Segment
Diagram Blok:
3. Rangkaian Simulasi dan Prinsip Kerja [Kembali]
Rangkaian Simulasi:
Prinsip Kerja:
Pada rangkaian tersebut, terdapat dua Arduino Uno yang berfungsi sebagai Master dan Slave. Arduino Uno Master terhubung dengan DIP switch sebagai input. Sedangkan Arduino Slave terhubung dengan seven segment. Saat Arduino Master menerima data input dari DIP switch, data tersebut akan dikirim menggunakan Arduino Uno yang berperan sebagai Slave. Ketika terdapat DIP switch yang aktif, seven segment akan menampilkan angka sesuai dengan data yang diterima.
4. Flowchart dan Listing Program [Kembali]
Flowchart
Master
Slave
Listing Program:
Master
//Master Arduino
#include<SPI.h> //Library for SPI
int dip[] = {2,3,4,5,6,7,8,9};
int dipvalue[] = {};
void setup (){
Serial.begin(9600); //Starts Serial Communication at Baud Rate 115200
for(int i = 0; i < 8; i++){
pinMode(dip[i], INPUT_PULLUP);
}
SPI.begin(); //Begins the SPI commnuication
SPI.setClockDivider(SPI_CLOCK_DIV8); //Sets clock for SPI communication at 8 (16/8=2Mhz)
digitalWrite(SS,HIGH); // Setting SlaveSelect as HIGH (So master doesnt connnect with slave)
}
void loop(void){
byte Mastersend;
int x = 1;
for(int i = 0; i < 8; i++){
dipvalue[i] = digitalRead(dip[i]);
if(dipvalue[i] == LOW){
x = dip[i];
}
}
digitalWrite(SS, LOW); //Starts communication with Slave connected to master
Mastersend = x;
Serial.println(Mastersend);
SPI.transfer(Mastersend); //Send the mastersend value to slave also receives value from slave
delay(1000);
}
Slave
//Slave Arduino:
#include<SPI.h>
const int segmentPins[] = {9, 8, 7, 6, 5, 4, 3, 2};
volatile boolean received = false;
volatile byte Slavereceived;
int index;
void setup(){
Serial.begin(9600);
for (int i = 0; i < 8; i++) {
pinMode(segmentPins[i], OUTPUT);
}
SPCR |= _BV(SPE); //Turn on SPI in Slave Mode
SPI.attachInterrupt(); //Interuupt ON is set for SPI commnucation
}
ISR (SPI_STC_vect){ //Inerrrput routine function
Slavereceived = SPDR; // Value received from master if store in variable slavereceived
received = true; //Sets received as True
}
void loop(){
Serial.println(Slavereceived);
if(received){//Logic to SET LED ON OR OFF depending upon the value recerived from master
displayCharacter(Slavereceived);
delay(1000);
}
}
void displayCharacter(int ch) {
byte patterns[10][7] = {
{0, 0, 0, 0, 0, 0, 1}, // 0
{1, 0, 0, 1, 1, 1, 1}, // 1
{0, 0, 1, 0, 0, 1, 0}, // 2
{0, 0, 0, 0, 1, 1, 0}, // 3
{1, 0, 0, 1, 1, 0, 0}, // 4
{0, 1, 0, 0, 1, 0, 0}, // 5
{0, 1, 0, 0, 0, 0, 0}, // 6
{0, 0, 0, 1, 1, 1, 1}, // 7
{0, 0, 0, 0, 0, 0, 0}, // 8
{0, 0, 0, 0, 1, 0, 0} // 9
};
if ((ch >= 0 && ch <= 9)) {
// Get the digit index (0-9) from the character
int index = ch;
// Write the pattern to the segment pins
for (int i = 0; i < 7; i++) {
digitalWrite(segmentPins[i], patterns[index][i]);
}
}
}
5. Kondisi [Kembali]
Modul 3 Percobaan 2
6. Video Simulasi [Kembali]
- HTML↠ klik disini
- Video Percobaan↠ klik disini
- Program Master↠ klik disini
- Program Slave↠ klik disini
- Datasheet Arduino↠ klik disini
- Datasheet Dipswitch↠ klik disini
- Datasheet Seven Segment↠ klik disini
Tidak ada komentar: