;********************************************************************** ; ; Copyright (C) 2007-2008 Elmar Hanlhofer http://www.plop.at ; ; This program is free software; you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation; either version 2 of the License, or ; (at your option) any later version. ; ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; ; ; ;********************************************************************** ; send data to usart serialSend: sbis UCSRA,UDRE rjmp serialSend out UDR,r16 ret ; read data from usart serialRead: push r16 push r17 clr r16 ldi r17,0 _serialRead: sbis UCSRA,RXC rjmp _serialRead pop r17 pop r16 in r16,UDR clc ret