Defines PIN in XC compiler

[embpic]

Hello master's
i am using pic16f876a controller and it's my starting to PIC controller's. how to define pins in XC compiler. and how to use port to send data and do ANDing with the port's data.

 

[jayanth.devarayanadurga]

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Code C - [expand]
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#define LED PORTBbits.RB0
#define LED LATBbits.RB0
#define LEDPORT PORTB
#define LEDPORT LATB
#define LCDRSDIR TRISBbits.TRISB0
 
PORTB = myData;
PORTB = PORTB & 0x01; //PORTB will be 1 after assigning

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[embpic]

how to define ISR routine function.

is there any difference in define the pins in Hi-Tech and this compiler.
if i done the task on proteus will 100% run on hardware.

 

[jayanth.devarayanadurga]

Google for Hi-Tech C Code and ISR.

 

[embpic]

i define as you give the way but it is not working
i have posted my code as follow
using xc 8-bit compiler
mplab x ide
pic16f876a

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--);
}

 

[jayanth.devarayanadurga]

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Code C - [expand]
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#include <xc.h>
 
#define _XTAL_FREQ 4000000
 
//#pragma config......... here

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Use PORTC for RS, RW, EN and PORTB for LCD data. I don't see TRISx settings in the code.

 

[embpic]

yes sir this setting remain to add but the lines as follows are giving error
PORTC = PORTC & 0x0f;

 

[jayanth.devarayanadurga]

Can't help you more without knowing your circuit and full code. Zip and post complete project files.