Guzunty Pi LED driver to display 4 digits

Now I have changed Guzunty Pi's demo program to just display 4 digits.


// Display Guzunty Pi LED digits 0123 for 4 seconds - tlfong01 2013apr21
#include <unistd.h>
#include <gz_clk.h>
#include <gz_spi.h>

const unsigned char font[128] = 
{
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // All
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // unprintable
  0x00, 0x30, 0x22, 0x76, // SP, !, ", # (H)
  0x6d, 0x7f, 0x7d, 0x20, // $ (5), % (8), & (6), '
  0x39, 0x0f, 0x76, 0x76, // (, ), * (H), + (H)
  0x10, 0x40, 0x00, 0x52, // ',', -, ., /
  0x3f, 0x06, 0x5b, 0x4f, // 0, 1, 2, 3
  0x66, 0x6d, 0x7d, 0x07, // 4, 5, 6, 7
  0x7f, 0x6f, 0x30, 0x30, // 8, 9, :, ;
  0x58, 0x48, 0x4c, 0x53, // <, =, >, ?
  0x7b, 0x77, 0x7f, 0x39, // @, A, B, C
  0x3f, 0x79, 0x71, 0x3d, // D (0), E, F, G
  0x76, 0x06, 0x1e, 0x75, // H, I (1), J, K
  0x38, 0x55, 0x37, 0x3f, // L, M, N, O (0)
  0x73, 0x7d, 0x31, 0x6d, // P, Q, R, S (5)
  0x07, 0x3e, 0x2a, 0x6a, // T, U, V, W
  0x76, 0x6e, 0x5b, 0x39, // X (H), Y (y), Z, [
  0x64, 0x0f, 0x23, 0x08, // backslash, ], ^, _
  0x02, 0x77, 0x7c, 0x58, // ', a (A), b, c
  0x5e, 0x7b, 0x71, 0x6f, // d, e, f (F), g
  0x74, 0x04, 0x0c, 0x75, // h, i (1), j, k (K)
  0x06, 0x55, 0x54, 0x5c, // l, m (M), n, o
  0x73, 0x67, 0x50, 0x6d, // p (P), q, r, s (5)
  0x78, 0x1c, 0x1c, 0x6a, // t, u, v (u), w (W)
  0x76, 0x6e, 0x5b, 0x39, // x (H), y, Z (2), { ([)
  0x30, 0x0f, 0x01, 0x00  // |, } (]), ~, DEL
};

int main()
{
    gz_clock_ena(GZ_CLK_5MHz, 0xfff);   // Turn on the slowest clock we can

    unsigned char digitList[4];
    
    gz_spi_set_width(4);                // Pass blocks of 4 bytes on SPI

       digitList[0] = ~0x3f; //'0'
    digitList[1] = ~0x06; //'1'
    digitList[2] = ~0x5b; //'2'
    digitList[3] = ~0x4f; //'3' 

    gz_spi_write(digitList);            // pass display bytes to SPI
    sleep(4);

    digitList[0] = ~0x00; //space
    digitList[1] = ~0x00; //space
    digitList[2] = ~0x00; //space
    digitList[3] = ~0x00; //space

    gz_spi_write(digitList);            // pass display bytes to SPI
    sleep(1);

    gz_spi_close();                     // close SPI channel
    gz_clock_dis();                     // turn off GPIO clock

    return 0;
}

//.END