urgent help for 16*2 lcd interfacing

[raj ranjan]

i am using JHD16 2A 16*2 lcd display ..

 

i have done all the connections according to the tutorial…..

the code is

 

#include<avr/io.h>

#include<util/delay.h>

 

 

#define LCD_DATA PORTA   //LCD data port is set as PORTA of microcontroller

#define ctrl PORTB       // PORTB is defined as ctrl

#define RS PB0

#define RW PB1

#define EN PB2

 

 

 

void LCD_cmd(unsigned char cmd);

void init_LCD(void);

 

 

void LCD_cmd(unsigned char cmd)

{

 

LCD_DATA=cmd;

ctrl=((0<<RS)|(0<<RW)|(1<<EN));

_delay_ms(1);

ctrl=((0<<RS)|(0<<RW)|(0<<EN));

_delay_ms(50);

return;

 

}

 

void init_LCD(void)

 

{

 

    LCD_cmd(0x38); // initialization of 16X2 LCD in 8bit mode

_delay_ms(1);

 

LCD_cmd(0x01); // clear LCD

_delay_ms(1);

 

LCD_cmd(0x0E); // cursor ON

_delay_ms(1);

 

LCD_cmd(0x80); // —8 go to first line and –0 is for 0th position

_delay_ms(1);

return;

 

}

 

 

int main(void)

 

{

 

DDRA=0b11111111;

PORTA=0b00000000;

DDRB=0b00000111;

PORTB=0b00000000;

 

init_LCD();

_delay_ms(100);

 

}

 

 

 

please help me 

 

[dagakshay]

let me know the problem you facing so that i can help you out

[Author]

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