hi, I am looking for the LCD code of 16*2 line LCD with 8051.
i am using keil ,
the program which i have done is displaying the string but i am not able to display the values , please help me.
if i send a value it will display the junk value like σχΔεζ.
the code is.
main()
{
unsigned char colloc,rowloc;
P0=0x00; // P0 and P0 as output ports
P2=0x00;
writecmd(0x3C); // initialize LCD
writecmd(0x0E);
writecmd(0x01); // clear memory and home cursor
writestr("Wel-Come to LCD"); // write message in first line
writecmd(0xC4); // move cursor to second line 4th pos
writestr("Program");
}
void MSdelay(unsigned int value)
{
unsigned int x,y;
for(x=0;x<1275;x++)
for(y=0;y<value;y++);
}
void writecmd(unsigned char a)
{
busy(); // check for LCD is busy or not
rs = 0; // clear rs pin for command
rw = 0; // clear rw pin to write
P0 = a; // send command character
en = 1; // strob LCD
en = 0;
}
void writedat(unsigned char b)
{
busy(); // check for LCD is busy or not
rs = 1; // set rs pin for data
rw = 0; // clear rw pin to write
P0 = b; // send data character
en = 1; // strob LCD
en = 0;
}
void busy()
{
en = 0; // disable display
P0 = 0xFF; // configur P0 as input
rs = 0; // clear rs pin for command
rw = 1; // set rw pin to read
while(b==1)
{
en=0; // strob LCD till P0.7 is 1
en=1;
}
en=0;
}
void writestr(unsigned char *s)
{
unsigned char l,i;
l = strlen(s); // get the length of string
for(i=1;i<l;i++)
{
writedat(*s); // write every char one by one
s++;
}
}
i am using keil ,
the program which i have done is displaying the string but i am not able to display the values , please help me.
if i send a value it will display the junk value like σχΔεζ.
the code is.
main()
{
unsigned char colloc,rowloc;
P0=0x00; // P0 and P0 as output ports
P2=0x00;
writecmd(0x3C); // initialize LCD
writecmd(0x0E);
writecmd(0x01); // clear memory and home cursor
writestr("Wel-Come to LCD"); // write message in first line
writecmd(0xC4); // move cursor to second line 4th pos
writestr("Program");
}
void MSdelay(unsigned int value)
{
unsigned int x,y;
for(x=0;x<1275;x++)
for(y=0;y<value;y++);
}
void writecmd(unsigned char a)
{
busy(); // check for LCD is busy or not
rs = 0; // clear rs pin for command
rw = 0; // clear rw pin to write
P0 = a; // send command character
en = 1; // strob LCD
en = 0;
}
void writedat(unsigned char b)
{
busy(); // check for LCD is busy or not
rs = 1; // set rs pin for data
rw = 0; // clear rw pin to write
P0 = b; // send data character
en = 1; // strob LCD
en = 0;
}
void busy()
{
en = 0; // disable display
P0 = 0xFF; // configur P0 as input
rs = 0; // clear rs pin for command
rw = 1; // set rw pin to read
while(b==1)
{
en=0; // strob LCD till P0.7 is 1
en=1;
}
en=0;
}
void writestr(unsigned char *s)
{
unsigned char l,i;
l = strlen(s); // get the length of string
for(i=1;i<l;i++)
{
writedat(*s); // write every char one by one
s++;
}
}