laporan akhir 2 (SPI)

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DAFTAR ISI

1.Hardware

2.Rangkaian Simulasi

3.Flowchart

4.Listing program

5.Video

6.Analisa

7.Link Download

 

1. Hardware[kembali]
led

 push button

2.  Rangkaian Simulasi[kembali]
 

3. Flowchart[kembali]

4. Listing Program[kembali]

//MASTER

#include  <SPI.h>  //Deklarasi library SPI

void setup (void) {

  Serial.begin(115200); //Set baud rate 115200

  digitalWrite(SS, HIGH);

  // disable Slave Select

  SPI.begin ();

  SPI.setClockDivider(SPI_CLOCK_DIV8);  //divide the clock by 8

}

void loop (void) {

  char c;

  digitalWrite(SS, LOW);  //enable Slave Select

  // send test string

  for (const char * p = "Hello, world!\r" ; c = *p; p++)

  {

    SPI.transfer (c);

    Serial.print(c);

  }

  digitalWrite(SS, HIGH); // disable Slave Select

  delay(2000);

}

//SLAVE

#include <SPI.h>

char buff [50];

volatile byte indx;

volatile boolean process;

void setup (void) {

  Serial.begin (115200);

  pinMode(MISO, OUTPUT); // have to send on master in so it set as output

  SPCR |= _BV(SPE); // turn on SPI in slave mode

  indx = 0; // buffer empty

  process = false;

  SPI.attachInterrupt(); // turn on interrupt

}

ISR (SPI_STC_vect) // SPI interrupt routine

{

  byte c = SPDR; // read byte from SPI Data Register

  if (indx < sizeof buff) {

    buff [indx++] = c; // save data in the next index in the array buff

    if (c == '\r') //check for the end of the word

      process = true;

  }

}

void loop (void) {

  if (process) {

    process = false; //reset the process

    Serial.println (buff); //print the array on serial monitor

    indx = 0; //reset button to zero

  }

}

5. Video [kembali]

6. Analisa[kembali] 

Analisa kenapa pada saat percobaan led tidak menyala!

            Karena pada saat master mentransmisikan data ke slave,slave menolak atau tidak menerima data dari master sehingga led tidak menyala.

7. Link download[kembali]

Download listing program master
Download listing program slave
Download video simulasi di sini
Download file html di sini