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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [HCS12_GCC_banked/] [asm-m68hcs12/] [sio.h] - Rev 596
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/* m68hc11/sio.h -- Utility methods to read/write the SIO Copyright 1999, 2000, 2003 Free Software Foundation, Inc. Written by Stephane Carrez (stcarrez@nerim.fr) This file is part of GDB, GAS, and the GNU binutils. GDB, GAS, and the GNU binutils are free software; you can redistribute them and/or modify them under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version. GDB, GAS, and the GNU binutils are distributed in the hope that they 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 file; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _M68HC12_SIO_H #define _M68HC12_SIO_H #include <sys/param.h> #include <sys/ports.h> /* Initialize SCI serial port to default baudrate and enable. */ extern inline void serial_init (void) { SCIBD = M6811_DEF_BAUD; SCICR1 = 0x00; //typical 8 bit SCICR2 = 0x0c; //Enable sci for polling } /* Return != 0 if there is something to read on the serial line. */ extern inline unsigned char serial_receive_pending (void) { return SCISR1 & RDRF; } /* Wait until the SIO has finished to send the character. */ extern inline void serial_flush (void) { while (!(SCISR1 & TDRE)) cop_optional_reset (); } /* Return != 0 if serial port is ready to send another char. */ extern inline unsigned char serial_send_ready (void) { return SCISR1 & TDRE; } /* Send the character on the serial line. */ extern inline void serial_send (char c) { serial_flush (); SCIDRL = c; SCICR2 |= (1<<3); } /* Wait for a character on the serial line and return it. */ extern inline unsigned char serial_recv (void) { while (!(SCISR1 & RDRF)) cop_optional_reset (); return SCIDRL; } extern void serial_print (const char *msg); extern void serial_getline (char *buf); #endif /* _M68HC11_SIO_H */
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