LA 2 MODUL 3

 

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DAFTAR ISI

1. Prosedur

2. Hardware dan Diagram Blok

3. Rangkaian Simulasi dan Prinsip Kerja

4. Flowchart dan Listing Program

5. Video Demo

6. Kondisi

7. Download File

Percobaan 2

Percobaan 2 Komunikasi SPI Menggunakan Arduino 

1. Prosedur [Kembali]

• Rangkai semua komponen 
• Buat program di aplikasi arduino IDE
• Setelah selesai masukkan program ke arduino 
• Jalankan program pada simulasi dan cobakan dengan modul
• Lihat hasil LCD apakah sesuai dengan warna switch yang ditekan

2. Hardware [Kembali]

• Hardware

• Dipswitch

• DUAL 7-SEG

• Arduino UNO

• VCC

• Ground

• Diagram Blok

3. Rangkaian Simulasi   [Kembali]

4. Prinsip Kerja Rangkaian [Kembali]

• Prinsip Kerja

Rangkaian percobaan ini merupakan rangkaian 8x Dip Switch dan Dual Seven Segment dengan komunikasi SPI. Dimana Dip Switch akan mengatur keluaran pada Dual Seven Segment, sehingga setiap dipswitch mewakili angka-angka secara berurutan. dari 1-9.

4. Flowchart dan Listing Program [Kembali]

• Flowchart

MASTER

SLAVE

• Listing Program 
• //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]);

  }

  }

  }

5. Video Demo [Kembali]

6. Kondisi dan Analisa [Kembali]

7. Download File [Kembali]

Download HTML 

Download Video Demo