212 lines
4.9 KiB
C
212 lines
4.9 KiB
C
/*
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* Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
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*
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* This software may be freely used, copied, modified, and distributed
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* provided that the above copyright notice is preserved in all copies of the
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* software.
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*/
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/* -*-C-*-
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*
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* $Revision$
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* $Date$
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*
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*/
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#ifndef angsd_unixcomm_h
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#define angsd_unixcomm_h
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#include <errno.h>
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#if defined(BSD)
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# define ERRNO_FOR_BLOCKED_IO EWOULDBLOCK
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#else
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# define ERRNO_FOR_BLOCKED_IO EAGAIN
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#endif
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/*
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* Function: Unix_MatchValidSerialDevice
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* Purpose: check that the serial driver/port name is valid
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* and return the actual device name if it is.
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*
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* Params:
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* Input: name Name of device going to be used
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*
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* Returns:
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* OK: Pointer to name of the device matched
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* Error or unrecognised deivce: 0
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*/
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extern const char *Unix_MatchValidSerialDevice(const char *name);
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/*
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* Function: Unix_IsSerialInUse
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* Purpose: check whether the serial port is in use
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*
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* Params:
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* Input: Nothing
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*
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* Returns:
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* OK: 0 Serial device not in use
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* Error: -1 Serial device in use
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*/
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extern int Unix_IsSerialInUse(void);
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/*
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* Function: Unix_OpenSerial
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* Purpose: open the serial port
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*
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* Params:
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* Input: name Name of device to open
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*
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* Returns: Unix 'open' returns
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*/
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extern int Unix_OpenSerial(const char *name);
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/*
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* Function: Unix_CloseSerial
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* Purpose: close the serial port
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*
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* Params:
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* Input: Nothing
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*
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* Returns: Nothing
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*/
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extern void Unix_CloseSerial(void);
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/*
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* Function: Unix_ReadSerial
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* Purpose: reads a specified number of bytes (or less) from the serial port
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*
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* Params:
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* Input: buf Buffer to store read bytes
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* n Maximum number of bytes to read
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*
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* Returns: Unix 'read' returns
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*/
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extern int Unix_ReadSerial(unsigned char *buf, int n, bool block);
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/*
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* Function: Unix_WriteSerial
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* Purpose: writes a specified number of bytes (or less) to the serial port
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*
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* Params:
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* Input: buf Buffer to write bytes from
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* n Maximum number of bytes to write
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*
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* Returns: Unix 'write' returns
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*/
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extern int Unix_WriteSerial(unsigned char *buf, int n);
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/*
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* Function: Unix_ResetSerial
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* Purpose: resets the serial port for another operation
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*
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* Params:
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* Input: Nothing
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*
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* Returns: Nothing
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*/
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extern void Unix_ResetSerial(void);
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/*
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* Function: Unix_SetSerialBaudRate
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* Purpose: check that the serial driver/port name is valid
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*
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* Params:
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* Input: baudrate termios value for baud rate
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*
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* Returns: Nothing
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*/
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extern void Unix_SetSerialBaudRate(int baudrate);
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/*
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* Function: Unix_ioctlNonBlocking
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* Purpose: sets the serial port to non-blocking IO
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*
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* Params:
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* Input: Nothing
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*
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* Returns: Nothing
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*/
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extern void Unix_ioctlNonBlocking(void);
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/*
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* Function: Unix_IsValidParallelDevice
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* Purpose: check whether the combined serial and parallel device specification
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* is ok, and return the ports selected
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*
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* Params:
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* Input: portstring - is a string which specifies which serial
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* and parallel ports are to be used. Can
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* include s=<val> and p=<val> separated by a
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* comma.
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*
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* Returns:
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* Output: *sername - returns the device name of the chosen serial port
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* *parname - returns the device name of the chosen parallel port
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* If either of these is NULL on return then the match failed.
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*/
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extern void Unix_IsValidParallelDevice(
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const char *portstring, char **sername, char **parname
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);
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/*
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* Function: Unix_IsParallelInUse
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* Purpose: check whether the parallel port is in use
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*
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* Params:
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* Input: Nothing
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*
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* Returns:
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* OK: 0 Parallel device not in use
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* Error: -1 Parallel device in use
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*/
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extern int Unix_IsParallelInUse(void);
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/*
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* Function: Unix_OpenParallel
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* Purpose: open the parallel port
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*
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* Params:
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* Input: name Name of device to open
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*
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* Returns: Unix 'open' returns
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*/
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extern int Unix_OpenParallel(const char *name);
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/*
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* Function: Unix_CloseParallel
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* Purpose: close the parallel port
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*
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* Params:
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* Input: Nothing
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*
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* Returns: Nothing
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*/
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extern void Unix_CloseParallel(void);
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/*
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* Function: Unix_WriteParallel
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* Purpose: writes a specified number of bytes (or less) to the parallel port
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*
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* Params:
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* Input: buf Buffer to write bytes from
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* n Maximum number of bytes to write
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*
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* Returns: Unix 'write' returns
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*/
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extern unsigned int Unix_WriteParallel(unsigned char *buf, int n);
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/*
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* Function: Unix_ResetParallel
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* Purpose: resets the parallel port for another operation
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*
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* Params:
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* Input: Nothing
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*
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* Returns: Nothing
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*/
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extern void Unix_ResetParallel(void);
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#endif /* ndef angsd_unixcomm_h */
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/* EOF unixcomm.h */
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