LCD display

[t.man]

If writing 8 bits is the problem then a write nibble function should solve it,

[COLOR="Blue"]void LCD_nibble(unsigned char nibble){
    LCD_CTRL_PORT &= ~(1<<LCD_rs); 
    LCD_DATA_PORT = (nibble & 0xF0)|(LCD_DATA_PORT & 0x0F); 
    LCD_enable(); 
}[/COLOR]

void LCD_init() 
{ 

   //initialize LCD control lines 
   LCD_CTRL_PORT &= ~(1<<LCD_rs);   // RS low 
   LCD_CTRL_PORT &= ~(1<<LCD_rw);   // R/W low 
   LCD_CTRL_PORT &= ~(1<<LCD_en);   // E low 

   // initialize LCD control lines to output 
   LCD_CTRL_DDR |= (1<<LCD_rs); 
   LCD_CTRL_DDR |= (1<<LCD_rw); 
   LCD_CTRL_DDR |= (1<<LCD_en); 

   // initialize LCD data port to input 
    LCD_DATA_DDR |= 0xF0;// Data on high four bits of port 

[COLOR="blue"]    _delay_ms(15);		//start of required sequnce
    LCD_nibble(0x30);
    _delay_ms(5); 
    LCD_nibble(0x30);
    _delay_ms(1); 
    LCD_nibble(0x30);	
    _delay_ms(1); 
    LCD_nibble(0x20);		//switch to 4 bit mode[/COLOR]

   LCD_start(); 
   LCD_function_set(); 
    _delay_us(40); 
   LCD_display_off(); 
   _delay_us(40); 
   LCD_display_clear(); 
   _delay_ms(2); 
   LCD_mode_set(); 
   LCD_display_on(); 
}

The blue bits are the changes from your original code.

Mike.

thanks a lot, at last it works!

keep up that good work!

 

[Mike - K8LH]

Great news! Congrats'.

Mike

 

[Pommie]

thanks a lot, at last it works!

Wahooo, where is that Homer smilie when you need it.

Mike.