Defines PIN in XC compiler

void enable();
void init_lcd();
void data_map(char);
void command_write(unsigned char);
void data_write(unsigned char);
void swap(char );
void delay(unsigned int);
void delay_us(unsigned int del);

#define rs PORTCbits.RC0
#define rw PORTCbits.RC1
#define E PORTCbits.RC2


void init_lcd()
{
	delay(15);
	command_write(0x03);
	delay(5);

	command_write(0x03);
	delay(5);

	command_write(0x03);
	delay(5);

	command_write(0x02);
	delay(5);

	command_write(0x28);
	delay(5);

	command_write(0x01);
	delay(5);

	command_write(0x0c);
	delay(5);
}

void data_map(unsigned char ds)
{
unsigned char ab;
	ab=ds;
	PORTC = PORTC & 0x0f;
	ab=ab&0xf0;
	PORTC =ab | PORTC;
}


void command_write(unsigned char c_dt)
{
	rs = 0;
	rw = 0;
	data_map(c_dt);
	enable();
	c_dt=c_dt<<4;
	data_map(c_dt);
	enable();
}


void data_write( char d_dt)
{
	rs = 1;
	rw = 0;
	data_map(d_dt);
	enable();
	d_dt=d_dt<<4;
	data_map(d_dt);
	enable();
}


void delay(unsigned int val)
{
unsigned int n,m;
	for(n=0;n<val;n++)
		for(m=0;m<=120;m++);
}

void enable()
{
    E = 1;
    delay_us(10);
    E = 0;
}

void print(unsigned char *ptr,unsigned char addr)
{
	command_write(addr);
	while(!(*ptr=='\0'))
	{
		data_write(*ptr++);
		delay(2);
	}
}

void delay_us(unsigned int del)
{
    for(;del>0;del--);
}