//01001110
//01000001
//01001110
//01000100
//01001111
#include <SPI.h> 

#define DATA_PIN  10  // Data Serial Input
#define LATCH_PIN 11 // Storage Register Clock Input
#define CLOCK_PIN 13 // Shift Register Clock Input

#define RegNumb 2 // shift register #

const uint8_t RegPinNumber = RegNumb * 8; // Register Pin #


bool registers[RegPinNumber]; 


char Word[] = "BOB"; // Word to translate to binary code

void setup() 
{
  // Set the control pins as outputs
  pinMode(DATA_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);

  // Clear the register states
  clearRegisters();

  // Write the initial register states
  writeRegisters();
}

void loop() 
{
  // Loop through each character in the Word
  for (uint8_t i = 0; i < strlen(Word); i++) {
    // Clear the register states
    clearRegisters();

    // Set the register states to match the ASCII representation of the current character
    for (uint8_t j = 0; j < 8; j++) {
      setRegisterPin(j, bitRead(Word[i], j));
    }

    // Write the register states
    writeRegisters();

    // Wait for 2 seconds before moving on to the next character
    delay(2000);
  }
}

void clearRegisters() {
  // Reset all register pins to LOW
  for (int i = RegPinNumber - 1; i >= 0; i--) {
    registers[i] = LOW;
  }
}

void setRegisterPin(int index, int value) {
  // Set an individual pin to HIGH or LOW
  registers[index] = value;
}

void writeRegisters() {
  // Set and display the register states
  digitalWrite(LATCH_PIN, LOW); // Pull latch LOW to start sending data

  // Send the register states via SPI
  for (int i = RegPinNumber - 1; i >= 0; i--) {
    digitalWrite(CLOCK_PIN, LOW); // Pull clock LOW to prepare for data
    digitalWrite(DATA_PIN, registers[i]); // Send the current register state
    digitalWrite(CLOCK_PIN, HIGH); // Pull clock HIGH to shift the register state
  }

  digitalWrite(LATCH_PIN, HIGH); // Pull latch HIGH to stop sending data and update the output
}