#include "header.h"

void setup() {
  init_port();
  volatile char *outf, *outk;
  outf = 0x31;
  outk = 0x108;

  // Define the characters vertically for scrolling right-to-left
  unsigned char W[] = {0x82, 0x82, 0x82, 0x82, 0x92, 0xaa, 0xc6, 0x82}; // W
  unsigned char e[] = {0x00, 0x78, 0x84, 0x84, 0xfc, 0x80, 0x44, 0x38}; // e
  unsigned char l[] = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80}; // l
  unsigned char c[] = {0x38, 0x44, 0x80, 0x80, 0x80, 0x80, 0x44, 0x38}; // c
  unsigned char o[] = {0x38, 0x44, 0x82, 0x82, 0x82, 0x82, 0x44, 0x38}; // o
  unsigned char m[] = {0x00, 0x6c, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92}; // m

  // Combined vertical columns for "Welcome"
  unsigned char text[] = {
    // W e l c o m e (with some space)
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    W[0], e[0], l[0], c[0], o[0], m[0], e[0], 0x00,
    W[1], e[1], l[1], c[1], o[1], m[1], e[1], 0x00,
    W[2], e[2], l[2], c[2], o[2], m[2], e[2], 0x00,
    W[3], e[3], l[3], c[3], o[3], m[3], e[3], 0x00,
    W[4], e[4], l[4], c[4], o[4], m[4], e[4], 0x00,
    W[5], e[5], l[5], c[5], o[5], m[5], e[5], 0x00,
    W[6], e[6], l[6], c[6], o[6], m[6], e[6], 0x00,
    W[7], e[7], l[7], c[7], o[7], m[7], e[7], 0x00
  };

  const int textLength = sizeof(text);  // Total length of the combined text array
  const int displayWidth = 8;           // Width of the 8x8 matrix display
  volatile long i;
  char col;

  while (1) {
    // Loop to scroll the text from right to left
    for (int shift = 0; shift <= textLength - displayWidth; shift++) {
      for (i = 0; i < 2200; i++) { // Adjust for smooth scrolling speed
        for (col = 0; col < 8; col++) {
          *outk = ~(1 << col);                // Activate the current column
          *outf = text[shift + col];          // Display the corresponding column of the text
        }
      }
      cleardisplay(outf, outk);             // Clear the display between shifts to avoid ghosting
    }
  }
}