2 * Copyright Droids Corporation, Microb Technology, Eirbot (2005)
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Revision : $Id: uart_recv9_nowait.c,v 1.1.2.1 2008-12-27 16:29:08 zer0 Exp $
22 /* Olivier MATZ, Droids-corp 2004 - 2009 */
25 #include <uart_defs.h>
26 #include <uart_private.h>
28 /* get a char from the receive fifo */
29 int uart_9bits_recv_nowait(uint8_t num)
34 /* if interrupt mode is off, we have to check the status
36 if (!(*uart_regs[num].ucsrb & (1 << RXCIE))) {
37 if ( !(*uart_regs[num].ucsra & (1 << RXC)) )
39 return uart_get_udr_9bits(num);
41 /* else check the fifo */
44 if( CIRBUF_GET_LEN(&g_rx_fifo[num]) >= 2) {
45 cirbuf_get_buf_tail(&g_rx_fifo[num], (char *)&elt, 2);
46 cirbuf_del_buf_tail(&g_rx_fifo[num], 2);