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trying for 8 bit interface. using this program but its not worling kindly help.#define F_CPU 1600000UL#include<avr/io.h>#include<util/delay.h>#define LCD_DATA PORTA // LCD data port#define ctrl PORTB#define en 0 // enable signal//#define rw PB1 // read/write signal#define rs 1 // register select signalvoid LCD_cmd(unsigned char cmd);void init_LCD(void);void LCD_write(unsigned char data);int main(){DDRA=0xff; // making LCD_DATA port as output portPORTA=0xff;DDRB=0x07; // making signal as out putPORTB=0xff;init_LCD(); // initialization of LCD_delay_ms(50); // delay of 50 milli secondsLCD_write('A'); // call a function to write A on LCDwhile(1);return 0;}void init_LCD(void){_delay_ms(20);LCD_cmd(0b00110000); // initialization of 16X2 LCD in 8bit mode_delay_ms(5);LCD_cmd(0b00110000); // clear LCD_delay_ms(1);LCD_cmd(0b00110000); // cursor ON_delay_ms(1);LCD_cmd(0b00111000); // —8 go to first line and –0 is for 0th position_delay_ms(1);LCD_cmd(0b00001000);_delay_ms(1);LCD_cmd(0b00000110);_delay_ms(1);LCD_cmd(0b0001100);}void LCD_cmd(unsigned char cmd){LCD_DATA=cmd;ctrl =(0<<rs)|(1<<en); // RS and RW as LOW and EN as HIGH_delay_ms(1);ctrl =(0<<rs)|(0<<en); // RS, RW , LOW and EN as LOW_delay_ms(50);return;}void LCD_write(unsigned char data){LCD_DATA= data;ctrl = (1<<rs)|(1<<en); // RW as LOW and RS, EN as HIGH_delay_ms(1);ctrl = (1<<rs)|(0<<en); // EN and RW as LOW and RS HIGH_delay_ms(50); // delay to get things executedreturn ;}
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