write lcd display on myself question !

[whung.john]

hi!everybody!
one day . i am start rewrite a lcd diaplay 16*2 program.
and not use ccs DEMO inclue lcd.c program.
but i find my diaplay driver ,dont ready display my set value or char word.
i had read the lcd display datasheets.and i use 4bit program command.
my lcd display datasheets id SDEC 16*2 (LMC-SSC2E16-01)
my written content follow as :

#include <16F877.h>
#use delay(clock=10000000)
#fuses NOWDT,HS
void del (void)
{
int j;
for (j=0;j<20;j++);
}


void en1(void)
{
output_high(pin_d0);
del();
output_low(pin_d0);
del();
}

void write_com(unsigned char C)
{
output_d(C);
output_LOW(pin_d1); en1();C<<=4;
output_d(C);output_LOW(pin_d1);en1();
}

void init_lcd1(void)
{
output_d(0x30); en1();
output_d(0x30); en1();
output_d(0x30); en1();
output_d(0x20); en1();
write_com(0x28);
write_com(0x01);
write_com(0x04);
write_com(0x0c);
delay_ms(100);




}

void write_data(unsigned char C)
{
output_d(C);
output_high(pin_d1); en1();C<<=4;
output_d(C);output_high(pin_d1);en1();
}

void pr(char x,char *y)
{
int i;
if (x==1)
{
write_com(0x80);
for(i=0;i<16;i++) write_data(' ');
write_com(0x80);}
else
{write_com(0xc0);
for (i=0;i<16;i++) write_data(' ');
write_com(0xc0);}

do {write_data(*y++);}
while(*y!='\0');
}

pr1(char t,char w)
{
write_com(0x80+t);
write_data(w);
}


void main()
{
char p[]="1234";
char k[]="5678";
output_low(pin_d0);
delay_ms(100);
init_lcd1();
pr(2,p);
pr1(5,k);

while(1)
{

}

}

[PCM programmer]

Study all the LCD drivers in the Code Library forum:
http://www.ccsinfo.com/forum/viewforum.php?f=2
Notice what they do. Look for differences between those
drivers and your code.

Or, just use one of the drivers in the Code Library.