need help in vertical scroll 7×32 matrix with pic18f2550 and 74hc595 shift register

[anoop mb]

hi,

i created a 7X32 led matrix for text scrolling with the tutorial posted in Embedded Lab .com

MCU IS PIC 18F2550
CRYSTAL 20 MHZ

7 rows are scanned with cd4017 and goes to uln2803 and to matrix
32 columns are driven by chained 4 74hc595 shift registers

I can scroll text from right to left without any problem

I need help to
– scroll text from left to right 
– scroll text vertically both upwards and downwards
-show some efects or animaions like fading,step in, sweep in etc..
-start scrolling from right end and stops at left end up to a defined time delay
-scroll one text vertically and others static mode

my code in mikroc is given below 
 

Code:

sbit Serial_Data at RA0_bit;

sbit SH_Clk at RA1_bit;

sbit ST_Clk at RA2_bit;

sbit CD4017_Clk at RA2_bit;

sbit CD4017_RST at RA1_bit;



const unsigned short CharData[][7] =

{

{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},   // 0x20, Space

{0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x04} ,  // 0x21, !

{0x09, 0x09, 0x12, 0x00, 0x00, 0x00, 0x00},   // 0x22, "

{0x0a, 0x0a, 0x1f, 0x0a, 0x1f, 0x0a, 0x0a} ,  // 0x23, #

{0x04, 0x0f, 0x14, 0x0e, 0x05, 0x1e, 0x04} ,  // 0x24, $

{0x19, 0x19, 0x02, 0x04, 0x08, 0x13, 0x13} ,  // 0x25, %

.............................................................................

{0x00, 0x00, 0x11, 0x0a, 0x04, 0x0a, 0x11},   // 0x78, x

{0x00, 0x11, 0x11, 0x0f, 0x01, 0x11, 0x0e},   // 0x79, y

{0x00, 0x00, 0x1f, 0x02, 0x04, 0x08, 0x1f},   // 0x7a, z

{0x06, 0x08, 0x08, 0x10, 0x08, 0x08, 0x06},   // 0x7b, {

{0x04, 0x04, 0x04, 0x00, 0x04, 0x04, 0x04},   // 0x7c, |

{0x0c, 0x02, 0x02, 0x01, 0x02, 0x02, 0x0c},   // 0x7d, }

{0x08, 0x15, 0x02, 0x00, 0x00, 0x00, 0x00}   // 0x7e, ~



};

unsigned short Buffer[7][5] = {

{0,0,0,0,0},

{0,0,0,0,0},

{0,0,0,0,0},

{0,0,0,0,0},

{0,0,0,0,0},

{0,0,0,0,0},

{0,0,0,0,0}

};



unsigned int speed, StringLength;

unsigned short i, l, k, row, scroll, temp, shift_step=1;

unsigned short m, SerialConnect=0, UserIP = 0;



const unsigned char default_message[]="hello world";



void Send_Data(unsigned short rw){

unsigned short Mask, t, num, Flag;

for (num = 0; num < 5; num++) {

Mask = 0x01;

for (t=0; t<6; t++){

Flag = Buffer[rw][num] & Mask;

if(Flag=0) Serial_Data = 0;

else Serial_Data = 1;

SH_Clk = 1;

SH_Clk = 0;

Mask = Mask << 1;

}

}



// Apply clock on ST_Clk

ST_Clk = 1;

ST_Clk = 0;



}



void scrollleft()

{

StringLength = 11;//hello world

for (k=0; k<StringLength+4; k++){

for (scroll=0; scroll<(7/shift_step); scroll++) {

for (row=0; row<7; row++){

index = default_message[k];

temp = CharData[index-32][row];

Buffer[row][4] = (Buffer[row][4] << Shift_Step) | (Buffer[row][3] >> (7-Shift_Step));

Buffer[row][3] = (Buffer[row][3] << Shift_Step) | (Buffer[row][2] >> (7-Shift_Step));

Buffer[row][2] = (Buffer[row][2] << Shift_Step) | (Buffer[row][1] >> (7-Shift_Step));

Buffer[row][1] = (Buffer[row][1] << Shift_Step) | (Buffer[row][0] >> (7-Shift_Step));

Buffer[row][0] = (Buffer[row][0] << Shift_Step)| (temp >> ((7-shift_step)-scroll*shift_step));

}

speed = 15;

for(l=0; l<speed;l++){



CD4017_Rst = 1;

CD4017_Rst = 0;



for (i=0; i<7; i++) {



Send_Data(i);

CD4017_Clk = 1;

CD4017_Clk = 0;

Delay_ms(1);



}  // i

} // l

} // scroll

} // k





}



void main() {

CMCON = 0x07;   // Disable comparators

ADCON0 = 0x00; // Select ADC channel AN0

ADCON1 = 0b00001110;  // RA0 as analog input

TRISC = 0x00;

TRISB = 0xFF;

TRISA = 0x01;



while(1){



scrollleft();



}







}

kindly help me to do above stated actions

sorry for my bad english and thanks in advance

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