DAFTAR ISI
1. Kondisi
2.
Hardware
3. Rangkaian
Simulasi
4. Listing
Program
5.
Video
6. Link
Download
1. Kondisi [Kembali]
Kondisi yang digunakan pada Tugas Pendahuluan ini adalah
Percobaan 1 kondisi 4 yaitu roda vehicle bergerak kekanan
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3. Rangkaian Simulasi dan Cara kerja [Kembali]
Percobaan ini merupakan percobaan 2 kondisi 2 dimana harus membuat rangakaian pada modul dan LED berkedip setiap 1 s. Percobaan ini menggunakan komunikasi SPI, berbeda dengan UART, SPI adalah syncronus, jadi hanya menggunakan clock. Pada SPI juga bisa mengunakan 1 master dan beberapa slave. SPI tidak lagi munggukan TX RX seperti pada UART, SPI menggunakan MOSI, MISO, SCLK, dan SS. PAda percobaan ini kita menggunakan pin 10,11,12,13 untuk SPI dan PIN 7 sebagaia input utk LED dan 2 Sebagai input button
4. Listing Program [Kembali]
#include<SPI.h> //Library for SPI
#define LED 7
#define ipbutton 2
int buttonvalue;
int x;
void setup ()
{
Serial.begin(115200); //Starts Serial Communication at Baud Rate 115200
pinMode(ipbutton,INPUT); //Sets pin 2 as input
pinMode(LED,OUTPUT); //Sets pin 7 as Output
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()
{
byte Mastersend,Mastereceive;
buttonvalue = digitalRead(ipbutton); //Reads the status of the pin 2
if(buttonvalue == HIGH) //Logic for Setting x value (To be sent to slave) depending upon input from pin 2
{
x = 1;
}
else
{
x = 0;
}
digitalWrite(SS, LOW); //Starts communication with Slave connected to master
Mastersend = x;
Mastereceive=SPI.transfer(Mastersend); //Send the mastersend value to slave also receives value from slave
if(Mastereceive == 1) //Logic for setting the LED output depending upon value received from slave
{
digitalWrite(LED,HIGH);
delay(500);
digitalWrite(LED,LOW);
//Sets pin 7 HIGH
Serial.println("Master LED ON");
}
else
{
digitalWrite(LED,LOW); //Sets pin 7 LOW
Serial.println("Master LED OFF");
}
delay(250);
}
//SLAVE
#include<SPI.h>
#define LEDpin 7
#define buttonpin 2
volatile boolean received;
volatile byte Slavereceived,Slavesend;
int buttonvalue;
int x;
void setup()
{
Serial.begin(115200);
pinMode(buttonpin,INPUT); // Setting pin 2 as INPUT
pinMode(LEDpin,OUTPUT); // Setting pin 7 as OUTPUT
pinMode(MISO,OUTPUT); //Sets MISO as OUTPUT (Have to Send data to Master IN
SPCR |= _BV(SPE); //Turn on SPI in Slave Mode
received = false;
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()
{ if(received) //Logic to SET LED ON OR OFF depending upon the value recerived from master
{
if (Slavereceived==1)
{
digitalWrite(LEDpin,HIGH);
delay(500);
digitalWrite(LEDpin, LOW);//Sets pin 7 as HIGH LED ON
Serial.println("Slave LED ON");
}else
{
digitalWrite(LEDpin,LOW); //Sets pin 7 as LOW LED OFF
Serial.println("Slave LED OFF");
}
buttonvalue = digitalRead(buttonpin); // Reads the status of the pin 2
if (buttonvalue == HIGH) //Logic to set the value of x to send to master
{
x=1;
}else
{
x=0;
}
Slavesend=x;
SPDR = Slavesend; //Sends the x value to master via SPDR
delay(250);
}
}
HTML - download
Simulasi Proteus - download
Listing Program master- download
Listing Program slave- download
Video - download
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