Tugas Pendahuluan Modul 3

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DAFTAR ISI

1. Kondisi

2. Gambar Rangkaian Simulasi

3. Flowchart

4. Listing Program

5. Video Tutorial

6. Link Download

1. Kondisi [kembali]

Ubah boud rate pada Slave menjadi 34500

2. Gambar Rangkaian Simulasi [kembali]

3. Flowchart [kembali]

Flowchart Master


Flowchart Slave

4. Listing Program [kembali]

Slave
#include<SPI.h>
#define LEDpin 7
#define button 2
volatile boolean received;
volatile byte Slavereceived,Slavesend;
int buttonvalue;
int x;
void setup()

{
  Serial.begin(115200);

  pinMode(button,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()
{
   int nilai = digitalRead(button);
  if(received)                            //Logic to SET LED ON OR OFF depending upon the value recerived from master
   {
      if (Slavereceived==1)
      {
        digitalWrite(LEDpin,HIGH);         //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(button);  // Reads the status of the pin 2
   
      if (nilai == 0) 
      {     Serial.print("1");    } 
      else 
      {     Serial.print("2");   }

  delay(200); }
   
  Slavesend=x;                           
  SPDR = Slavesend;                           //Sends the x value to master via SPDR
  delay(1000);
}

Master
#include<SPI.h>                             //Library for SPI
#define LED 7         
#define ipbutton 2
int buttonvalue;
int x;
void setup (void)

{
  Serial.begin(34500);                   //Starts Serial Communication at Baud Rate 34500

  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(void)
{
  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);              //Sets pin 7 HIGH
    Serial.println("Master LED ON");
  }
  else
  {
   digitalWrite(LED,LOW);               //Sets pin 7 LOW
   Serial.println("Master LED OFF");
  }
  delay(1000);


}

5. Video Tutorial [kembali]

6. Link Donwload [kembali]

• Download Rangkaian [download]
• Download Video [download]