Микроконтроллеры AVR

Как мне правильно сделать? Выдает ошибку при компилировании. Ругается на LCD_DATA. "../LCD_4_PROBA.c:99:1: error: too few arguments to function 'lcd_send_byte' " void lcd_send_byte (u08 LCD_DATA) { DATA_DDR = (DATA_DDR | 0xF0); setb(CMD_PORT, EN); DATA_PORT = (DATA_PORT & 0x0F) | (LCD_DATA & 0xF0); asm("nop"); asm("nop"); asm("nop"); asm("nop"); asm("nop"); clrb(CMD_PORT, EN); asm("nop"); asm("nop"); asm("nop"); asm("nop"); asm("nop"); setb(CMD_PORT, EN); DATA_PORT = (DATA_PORT & 0x0F) | (LCD_DATA << 4); asm("nop"); asm("nop"); asm("nop"); asm("nop"); asm("nop"); clrb(CMD_PORT, EN); asm("nop"); asm("nop"); asm("nop"); asm("nop"); asm("nop"); } //======================================================================== void lcd_send_com (u08 LCD_DATA) { clrb(CMD_PORT, RS); lcd_send_byte (); lcd_io_in(); } //======================================================================== //======================================================================== void Init_LCD (void) { _delay_ms(20); lcd_send_com_nibble(0x30); _delay_ms(5); lcd_send_com_nibble(0x30); _delay_ms(5); lcd_send_com_nibble(0x30); _delay_ms(5); lcd_send_com_nibble(0x20); _delay_us(50); lcd_send_com_nibble(0x28); _delay_us(50); lcd_send_com(0x01); _delay_ms(5); lcd_send_com(0x06); _delay_us(50); lcd_send_com(0x0C); _delay_us(50); } //========================================================================