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/*
* Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
*
* This software may be freely used, copied, modified, and distributed
* provided that the above copyright notice is preserved in all copies of the
* software.
*/
/* -*-C-*-
*
* $Revision: 1.2 $
* $Date: 1998/01/08 11:12:39 $
*
*/
#ifndef angsd_unixcomm_h
#define angsd_unixcomm_h
#include <errno.h>
#if defined(BSD)
# define ERRNO_FOR_BLOCKED_IO EWOULDBLOCK
#else
# define ERRNO_FOR_BLOCKED_IO EAGAIN
#endif
/*
* Function: Unix_MatchValidSerialDevice
* Purpose: check that the serial driver/port name is valid
* and return the actual device name if it is.
*
* Params:
* Input: name Name of device going to be used
*
* Returns:
* OK: Pointer to name of the device matched
* Error or unrecognised deivce: 0
*/
extern const char *Unix_MatchValidSerialDevice(const char *name);
/*
* Function: Unix_IsSerialInUse
* Purpose: check whether the serial port is in use
*
* Params:
* Input: Nothing
*
* Returns:
* OK: 0 Serial device not in use
* Error: -1 Serial device in use
*/
extern int Unix_IsSerialInUse(void);
/*
* Function: Unix_OpenSerial
* Purpose: open the serial port
*
* Params:
* Input: name Name of device to open
*
* Returns: Unix 'open' returns
*/
extern int Unix_OpenSerial(const char *name);
/*
* Function: Unix_CloseSerial
* Purpose: close the serial port
*
* Params:
* Input: Nothing
*
* Returns: Nothing
*/
extern void Unix_CloseSerial(void);
/*
* Function: Unix_ReadSerial
* Purpose: reads a specified number of bytes (or less) from the serial port
*
* Params:
* Input: buf Buffer to store read bytes
* n Maximum number of bytes to read
*
* Returns: Unix 'read' returns
*/
extern int Unix_ReadSerial(unsigned char *buf, int n, bool block);
/*
* Function: Unix_WriteSerial
* Purpose: writes a specified number of bytes (or less) to the serial port
*
* Params:
* Input: buf Buffer to write bytes from
* n Maximum number of bytes to write
*
* Returns: Unix 'write' returns
*/
extern int Unix_WriteSerial(unsigned char *buf, int n);
/*
* Function: Unix_ResetSerial
* Purpose: resets the serial port for another operation
*
* Params:
* Input: Nothing
*
* Returns: Nothing
*/
extern void Unix_ResetSerial(void);
/*
* Function: Unix_SetSerialBaudRate
* Purpose: check that the serial driver/port name is valid
*
* Params:
* Input: baudrate termios value for baud rate
*
* Returns: Nothing
*/
extern void Unix_SetSerialBaudRate(int baudrate);
/*
* Function: Unix_ioctlNonBlocking
* Purpose: sets the serial port to non-blocking IO
*
* Params:
* Input: Nothing
*
* Returns: Nothing
*/
extern void Unix_ioctlNonBlocking(void);
/*
* Function: Unix_IsValidParallelDevice
* Purpose: check whether the combined serial and parallel device specification
* is ok, and return the ports selected
*
* Params:
* Input: portstring - is a string which specifies which serial
* and parallel ports are to be used. Can
* include s=<val> and p=<val> separated by a
* comma.
*
* Returns:
* Output: *sername - returns the device name of the chosen serial port
* *parname - returns the device name of the chosen parallel port
* If either of these is NULL on return then the match failed.
*/
extern void Unix_IsValidParallelDevice(
const char *portstring, char **sername, char **parname
);
/*
* Function: Unix_IsParallelInUse
* Purpose: check whether the parallel port is in use
*
* Params:
* Input: Nothing
*
* Returns:
* OK: 0 Parallel device not in use
* Error: -1 Parallel device in use
*/
extern int Unix_IsParallelInUse(void);
/*
* Function: Unix_OpenParallel
* Purpose: open the parallel port
*
* Params:
* Input: name Name of device to open
*
* Returns: Unix 'open' returns
*/
extern int Unix_OpenParallel(const char *name);
/*
* Function: Unix_CloseParallel
* Purpose: close the parallel port
*
* Params:
* Input: Nothing
*
* Returns: Nothing
*/
extern void Unix_CloseParallel(void);
/*
* Function: Unix_WriteParallel
* Purpose: writes a specified number of bytes (or less) to the parallel port
*
* Params:
* Input: buf Buffer to write bytes from
* n Maximum number of bytes to write
*
* Returns: Unix 'write' returns
*/
extern unsigned int Unix_WriteParallel(unsigned char *buf, int n);
/*
* Function: Unix_ResetParallel
* Purpose: resets the parallel port for another operation
*
* Params:
* Input: Nothing
*
* Returns: Nothing
*/
extern void Unix_ResetParallel(void);
#endif /* ndef angsd_unixcomm_h */
/* EOF unixcomm.h */
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