/* uart.simu.c - used for simulavrxx pseudo ports. */ /* avr.uart - UART AVR module. {{{ * * Copyright (C) 2005 Nicolas Schodet * * Robot APB Team/Efrei 2006. * Web: http://assos.efrei.fr/robot/ * Email: robot AT efrei DOT fr * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * }}} */ #include "common.h" #include "uart.h" #include "uart_common.h" #if AC_UART (PORT) != -1 int uart (eof); /** Initialise uart. */ void uart_init (void) { uart (eof) = 0; } /** Use this as exit point. */ void uart (exit) (void) { uart (eof) = 1; } /** Read a char. */ uint8_t uart_getc (void) { uint8_t c; if (uart (eof)) return 0xff; c = *(uint8_t *) 0x20; if (!c) { uart (exit) (); c = 0xff; } return c; } /** Write a char. */ void uart_putc (uint8_t c) { *(uint8_t *) 0x22 = c; } /** Retrieve availlable chars. */ uint8_t uart_poll (void) { return !uart (eof); } #endif /* AC_UART (PORT) != -1 */