/** * rt_com * ====== * * RT-Linux kernel module for communication across serial lines. * * Copyright (C) 1997 Jens Michaelsen * Copyright (C) 1997-2000 Jochen K黳per * * 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; see the file License. if not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307, USA. */#ifndef RT_COM_H#define RT_COM_Htypedef void (*IRQ_CALLBACK_FN) (unsigned int com_port);extern void cleanup_module( void );extern int  init_module( void );/* amount of free space remaining in out buffer */extern int  rt_com_bout_free( unsigned int);/* clear input buffer */extern int  rt_com_clr_in( unsigned int);/* clear output buffer */extern int  rt_com_clr_out( unsigned int);/* read input signal from modem (CTS,DSR,RI,DCD) */extern int  rt_com_rd_modem (unsigned int com, int segnal);/* read from input buffer */extern int  rt_com_read( unsigned int, char *, int );/* set up port */extern int  rt_com_setup( unsigned int, int, unsigned int, unsigned int, unsigned int );/* set call-back function for when data rx'd */extern IRQ_CALLBACK_FN rt_com_set_callback (unsigned int com, IRQ_CALLBACK_FN fn);/* port & irq setting for a specified com */extern int  rt_com_set_param( unsigned int com, int port, int irq );/* set functioning mode */extern int  rt_com_set_mode( unsigned int com, int mode );/* write to output buffer */extern void rt_com_write( unsigned int com, const char *buffer, int count );/* set output signal for modem control (DTR,RTS) */extern int  rt_com_wr_modem( unsigned int com, int signal, int value );/* return last error detected */extern int  rt_com_error( unsigned int com );/* parity flags */#define RT_COM_PARITY_EVEN    0x18#define RT_COM_PARITY_NONE    0x00#define RT_COM_PARITY_ODD     0x08/* size of internal queues (power of 2) */#define RT_COM_BUF_SIZ      0x1000/* modem control signal and modem status signal definition */#define RT_COM_DTR            0x01      /* data Terminal Ready */#define RT_COM_RTS            0x02      /* Request To Send */#define RT_COM_Out1           0x04#define RT_COM_Out2           0x08#define RT_COM_CTS            0x10#define RT_COM_LoopBack       0x10#define RT_COM_DSR            0x20#define RT_COM_RI             0x40#define RT_COM_DCD            0x80/* error code masks */#define RT_COM_BUFFER_FULL    0x01#define RT_COM_OVERRUN        0x02#define RT_COM_PARITY         0x04#define RT_COM_FRAME          0x08#define RT_COM_BREAK          0x10/* functioning mode */#define RT_COM_DSR_ON_TX      0x00#define RT_COM_NO_HAND_SHAKE  0x01#define RT_COM_HW_FLOW	      0x02#endif /* RT_COM_H *//** * Local Variables: * mode: C * c-file-style: "Stroustrup" * End: */