#define SCK PB5
#define MISO PB4
#define MOSI PB3
#define CS PB2

#define DDR_SPI DDRB
#define DD_MISO DDB4
#define DD_MOSI DDB3
#define DD_SCK DDB2
volatile uint8_t j = 1;

volatile uint8_t i;

unsigned int ascii_characters[][8] = {
   {0b00000000,0b00000000,0b00000000,0b00000000,0b00000000}, // space
 {0b00000000,0b00000000,0b01001111,0b00000000,0b00000000}, // !
 {0b00000000,0b00000111,0b00000000,0b00000111,0b00000000}, // "
 {0b00010100,0b01111111,0b00010100,0b01111111,0b00010100}, // #
 {0b00100100,0b00101010,0b01111111,0b00101010,0b00010010}, // $
 {0b00100011,0b00010011,0b00001000,0b01100100,0b01100010}, // %
 {0b00110110,0b01001001,0b01010101,0b00100010,0b01010000}, // &
 {0b00000000,0b00000101,0b00000011,0b00000000,0b00000000}, // '
 {0b00000000,0b00011100,0b00100010,0b01000001,0b00000000}, // (
 {0b00000000,0b01000001,0b00100010,0b00011100,0b00000000}, // )
 {0b00010100,0b00001000,0b00111110,0b00001000,0b00010100}, // *
 {0b00001000,0b00001000,0b00111110,0b00001000,0b00001000}, // +
 {0b00000000,0b01010000,0b00110000,0b00000000,0b00000000}, // ,
 {0b00001000,0b00001000,0b00001000,0b00001000,0b00001000}, // -
 {0b00000000,0b01100000,0b01100000,0b00000000,0b00000000}, // .
 {0b00100000,0b00010000,0b00001000,0b00000100,0b00000010}, // /
 {0b00111110,0b01010001,0b01001001,0b01000101,0b00111110}, // 0
 {0b00000000,0b01000010,0b01111111,0b01000000,0b00000000}, // 1
 {0b01000010,0b01100001,0b01010001,0b01001001,0b01000110}, // 2
 {0b00100001,0b01000001,0b01000101,0b01001011,0b00110001}, // 3
 {0b00011000,0b00010100,0b00010010,0b01111111,0b00010000}, // 4
 {0b00100111,0b01000101,0b01000101,0b01000101,0b00111001}, // 5 
 {0b00111100,0b01001010,0b01001001,0b01001001,0b00110000}, // 6
 {0b00000011,0b01110001,0b00001001,0b00000101,0b00000011}, // 7
 {0b00110110,0b01001001,0b01001001,0b01001001,0b00110110}, // 8
 {0b00000110,0b01001001,0b01001001,0b00101001,0b00011110}, // 9
 {0b00000000,0b01101100,0b01101100,0b00000000,0b00000000}, // :
 {0b00000000,0b01010110,0b00110110,0b00000000,0b00000000}, // ;
 {0b00001000,0b00010100,0b00100010,0b01000001,0b00000000}, // <
 {0b00010100,0b00010100,0b00010100,0b00010100,0b00010100}, // =
 {0b00000000,0b01000001,0b00100010,0b00010100,0b00001000}, // >
 {0b00000010,0b00000001,0b01010001,0b00001001,0b00000110}, // ?
 {0b00110010,0b01001001,0b01111001,0b01000001,0b00111110}, // @
 {0b01111110,0b00010001,0b00010001,0b00010001,0b01111110}, // A
 {0b01111111,0b01001001,0b01001001,0b01001001,0b00111110}, // B
 {0b00111110,0b01000001,0b01000001,0b01000001,0b00100010}, // C
 {0b01111111,0b01000001,0b01000001,0b01000001,0b00111110}, // D
 {0b01111111,0b01001001,0b01001001,0b01001001,0b01001001}, // E
 {0b01111111,0b00001001,0b00001001,0b00001001,0b00000001}, // F
 {0b00111110,0b01000001,0b01001001,0b01001001,0b00111010}, // G
 {0b01111111,0b00001000,0b00001000,0b00001000,0b01111111}, // H
 {0b01000001,0b01000001,0b01111111,0b01000001,0b01000001}, // I
 {0b00110000,0b01000001,0b01000001,0b00111111,0b00000001}, // J
 {0b01111111,0b00001000,0b00010100,0b00100010,0b01000001}, // K
 {0b01111111,0b01000000,0b01000000,0b01000000,0b01000000}, // L
 {0b01111111,0b00000010,0b00001100,0b00000010,0b01111111}, // M
 {0b01111111,0b00000100,0b00001000,0b00010000,0b01111111}, // N
 {0b00111110,0b01000001,0b01000001,0b01000001,0b00111110}, // O
 {0b01111111,0b00001001,0b00001001,0b00001001,0b00000110}, // P
 {0b00111110,0b01000001,0b01010001,0b00100001,0b01011110}, // Q
 {0b01111111,0b00001001,0b00001001,0b00011001,0b01100110}, // R
 {0b01000110,0b01001001,0b01001001,0b01001001,0b00110001}, // S 
 {0b00000001,0b00000001,0b01111111,0b00000001,0b00000001}, // T
 {0b00111111,0b01000000,0b01000000,0b01000000,0b00111111}, // U
 {0b00001111,0b00110000,0b01000000,0b00110000,0b00001111}, // V
 {0b00111111,0b01000000,0b00111000,0b01000000,0b00111111}, // W
 {0b01100011,0b00010100,0b00001000,0b00010100,0b01100011}, // X 
 {0b00000011,0b00000100,0b01111000,0b00000100,0b00000011}, // Y
 {0b01100001,0b01010001,0b01001001,0b01000101,0b01000011}, // Z
 {0b01111111,0b01000001,0b01000001,0b00000000,0b00000000}, // [
 {0b00000010,0b00000100,0b00001000,0b00010000,0b00100000}, // '\'
 {0b00000000,0b00000000,0b01000001,0b01000001,0b01111111}, // ]
 {0b00000100,0b00000010,0b00000001,0b00000010,0b00000100}, // ^
 {0b01000000,0b01000000,0b01000000,0b01000000,0b01000000}, // _
 {0b00000000,0b00000001,0b00000010,0b00000100,0b00000000}, // `
 {0b00100000,0b01010100,0b01010100,0b01010100,0b01111000}, // a
 {0b01111111,0b01001000,0b01000100,0b01000100,0b00111000}, // 0b
 {0b00111000,0b01000100,0b01000100,0b01000100,0b00100000}, // c
 {0b00111000,0b01000100,0b01000100,0b01001000,0b01111111}, // d
 {0b00111000,0b01010100,0b01010100,0b01010100,0b00011000}, // e
 {0b00001000,0b01111110,0b00001001,0b00000001,0b00000010}, // f
 {0b00001100,0b01010010,0b01010010,0b01010010,0b00111110}, // g
 {0b01111111,0b00001000,0b00000100,0b00000100,0b01111000}, // h
 {0b00000000,0b01000100,0b01111101,0b01000000,0b00000000}, // i
 {0b00100000,0b01000000,0b01000100,0b00111101,0b00000000}, // j
 {0b01111111,0b00010000,0b00101000,0b01000100,0b00000000}, // k
 {0b00000000,0b01000001,0b01111111,0b01000000,0b00000000}, // l
 {0b01111000,0b00000100,0b00001000,0b00000100,0b01111000}, // m
 {0b01111100,0b00001000,0b00000100,0b00000100,0b01111000}, // n
 {0b00111000,0b01000100,0b01000100,0b01000100,0b00111000}, // o
 {0b01111100,0b00010100,0b00010100,0b00010100,0b00001000}, // p
 {0b00001000,0b00010100,0b00010100,0b01111100,0b00000000}, // q
 {0b01111100,0b00001000,0b00000100,0b00000100,0b00001000}, // r
 {0b01001000,0b01010100,0b01010100,0b01010100,0b00100000}, // s
 {0b00000100,0b00111111,0b01000100,0b01000000,0b00100000}, // t
 {0b00111100,0b01000000,0b01000000,0b00100000,0b01111100}, // u
 {0b00011100,0b00100000,0b01000000,0b00100000,0b00011100}, // v
 {0b00111100,0b01000000,0b00110000,0b01000000,0b00111100}, // w
 {0b01000100,0b00101000,0b00010000,0b00101000,0b01000100}, // x
 {0b00001100,0b01010000,0b01010000,0b01010000,0b00111100}, // y
 {0b01000100,0b01100100,0b01010100,0b01001100,0b01000100}, // z          
 {0b00000000,0b00001000,0b00110110,0b01000001,0b00000000}, // {
 {0b00000000,0b00000000,0b01111111,0b00000000,0b00000000}, // |
 {0b00000000,0b01000001,0b00110110,0b00001000,0b00000000}, // }
 {0b00001000,0b00000100,0b00000100,0b00001000,0b00000100} // ~    
}; // characters[95]
  

char numbers[][8] = {
{0b00001000, 0b00001100, 0b00001010, 0b00001000, 0b00001000, 0b00001000, 0b00001000, 0b11111111}, // number 1
{0b00001110, 0b00010010, 0b00010000, 0b00011000, 0b00000100, 0b00000100, 0b00001000, 0b11111111}, // number 2
{0b00011100, 0b00100010, 0b00100001, 0b00010000, 0b00100000, 0b01000000, 0b00100000, 0b00011100}, // number 3
{0b01000010, 0b01000010, 0b01000010, 0b01111110, 0b01000000, 0b01000000, 0b01000000, 0b01000000}, // number 4
{0b11111000, 0b00001000, 0b00001000, 0b00011000, 0b00100000, 0b01000000, 0b00100000, 0b00011110} // number 5
};
char number_2[8] = {
0b00000000,
0b01000100,
0b00000000,
0b00000000,
0b10000010,
0b01111100,
0b00000000,
0b00000000
};
// unsigned int angryface_B[] = {0x00, 0x00, 0x66, 0x66, 0x00, 0x18, 0x24, 0x42, 0x00};

int main(void)
{ 
    Serial.begin(115200);
    SPI_MasterInit();
    // Serial.println(1);
    // SPI_MasterInit();
    PORTD |= (1 << MISO);
    sei();
    
    while (1)
    {
      if (Serial.available())
      {
        char symb = Serial.read();
        Serial.println(symb, DEC);
        for (int l = 0; l < 8; l++)
        {
          DisplayCharacter(symb - 32, l);
          _delay_ms(100);
        }
        // DisplayCharacter(symb - 32);
      }
      _delay_ms (500);
      // for (int char_index = 0; char_index < 128; char_index++)
      // {
      //  if (Serial.available()) 
      //  {
      //     char symb=Serial.read();
      //     Serial.println(symb, DEC);
      //     Serial.read();
      //  }
      //   DisplayCharacter (char_index);
      //   _delay_ms (500);
      // }
    }
}

void DisplayCharacter(int char_index, int shift)
{
    for (int k = 0; k < 8; k++)
    {
        Send_7219(k + 0, (ascii_characters [char_index][7 - k] << shift));
     //   _delay_ms(500);
    }
}

void SPI_MasterInit(void)
{
    DDR_SPI = (1 << DD_MOSI) | (1 << DD_SCK);
    SPCR = (1 << SPE) | (1 << MSTR) | (1 << SPR0);
}

void SPI_MasterTransmit(char cData)
{
    SPDR = cData;
    while (!(SPSR & (1 << SPIF)));
}

void Send_7219(char rg, char dt)
{
    PORTB &= ~(1 << CS);
    SPI_MasterTransmit(rg);
    _delay_ms(10);
    SPI_MasterTransmit(dt);
    PORTB |= (1 << CS);
}