#include <SPI.h>

#define CS 10

void setup() {
  Serial.begin(115200);
  pinMode(CS, OUTPUT);
}

void loop() {
  char sendData[] = "Uryyb, FCV! ";
  char receivedData[sizeof(sendData)];

  // SPI Transaction: sends the contents of sendData and overwrites it with the received data.
  digitalWrite(CS, LOW);
  SPI.begin();
  SPI.transfer(sendData, sizeof(sendData) - 1);  // Exclude the null terminator
  SPI.end();
  digitalWrite(CS, HIGH);

  Serial.println("Data sent to SPI device:");
  Serial.println(sendData);

  // Print the received data
  Serial.println("Data received from SPI device:");
  Serial.println(sendData);

  delay(1000);  // Add a delay if needed
}