control7 blog

// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;
 
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections
 
void main(){
 
  Lcd_Init();                        // Initialize LCD
 
  Lcd_Cmd(_LCD_CLEAR);               // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);          // Cursor off
 
  Lcd_Out(1,2,"PIC16F877A LCD");     // Write text in first row
  Lcd_Out(2,3,"control7.net");       // Write text in second row
}

#include <avr/io.h>
#include <stdio.h>
 
//Method to read pin status
uint8_t GetKeyStatus(uint8_t key)
{
	return (!(PINB & (1<<key)));
}
 
void main()
{
	DDRB = 0b00000111; //set B0, B1 and B2 as output
	while(1)
	{
		if(GetKeyStatus(0)) //reading B0 status
		{
			PORTB = 0b00000010; //set B1 as HIGH
		}
		else
		{
			PORTB = 0b00000100;	//set B2 as HIGH
		}
	}
}