/*
  Wokwi Custom SPI Chip example
  The chip implements a simple ROT13 letter substitution cipher:
  https://en.wikipedia.org/wiki/ROT13
*/

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

//defining the SS/CS PIN. in this case CS is Pin 10
#define CS 10

void setup() {
  //sending the string to the SPI "device"
  char buffer[] = "Uryyb, FCV! ";
  //starts communication
  Serial.begin(115200);
  //Sets the CS pin as an output.
  pinMode(CS, OUTPUT);

  // SPI Transaction: sends the contents of buffer, and overwrites it with the received data.
  digitalWrite(CS, LOW);
  SPI.begin();
  SPI.transfer(buffer, strlen(buffer));
  SPI.end();
  digitalWrite(CS, HIGH);

  Serial.println("Data received from SPI device:");
  Serial.println(buffer);
}

void loop() {
}