Percobaan 2 Komunikasi SPI Menggunakan Arduino.
1. Rangkai semua komponen sesuai kondisi yang dipilih
2. Buat program di aplikasi arduino IDE
3. Setelah selesai masukkan program ke arduino di proteus
4. Jalankan program pada simulasi dan cobakan sesuai dengan modul dan kondisi
5. Selesai
2. Hardware dan diagram blok
[Kembali]
1. Hardware
3. Rangkaian Simulasi dan Prinsip kerja
[Kembali]
PRINSIP KERJA
saat program dijalankan dan masuk ke komponen arduino MASTER. Selanjutnya, program terus berjalan dalam loop utama, pada saat awal jalannya rangkaian arduino master akan menerima inputan dari dipswitch lalu akan mengirimkannya ke arduino slave. Setelah arduino slave menerima sinyal dari master lalu 7segment akan mendeteksi pin berapa yang sedang berlogika low pada seven segment sehingga 7segment akan menampilkan sesuai inputan yang diberikan pada arduino.
4. FlowChart [Kembali]
//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 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]);
}
}
}
b. Flowchart
Kondisi : Percobaan 2 Sesuai modul
6. Video Simulasi [Kembali]
7. Analisa dan Pembahasan [Kembali]
8. Download File [Kembali]
Download HTML Klik disini
Download Video Simulasi Klik disini
Datasheet Arduino klik disini
Datasheet 7segment klik disini
