Miscellaneous functions and macros for the BEEP-8 system. More...

Macros
#define	ASCII_NUL (0x00)
	Null character.

#define	ASCII_ETX (0x03)
	End of text.

#define	ASCII_BEL (0x07)
	Bell.

#define	ASCII_BS (0x08)
	Backspace.

#define	ASCII_CTRL_H (0x08)
	Control-H, same as backspace.

#define	ASCII_HT (0x09)
	Horizontal tab.

#define	ASCII_LF (0x0a)
	Line feed.

#define	ASCII_VT (0x0b)
	Vertical tab.

#define	ASCII_FF (0x0c)
	Form feed.

#define	ASCII_CR (0x0d)
	Carriage return.

#define	ASCII_EOT (0x04)
	End of transmission.

#define	ASCII_TAB (0x09)
	Tab, same as horizontal tab.

#define	ASCII_ESC (0x1b)
	Escape.

#define	ASCII_SPACE (0x20)
	Space.

#define	ASCII_DEL (0x7e)
	Delete.

#define	fileno(p)

#define	UNUSED(x)

Functions
int	ioctl (int fd, int request,...)
	Performs a variety of control functions on devices.

Detailed Description

Miscellaneous functions and macros for the BEEP-8 system.

This file aggregates various functions and macros that do not fit into specific categories. It includes ASCII character definitions, utility macros, and external function declarations for general-purpose use.

The ASCII definitions provide easy references to control characters and other common ASCII values. Utility macros such as fileno and UNUSED offer convenient ways to handle file descriptors and suppress unused variable warnings, respectively.

For more detailed information, please refer to the BEEP-8 data sheet.

Macro Definition Documentation

◆ fileno

#define fileno ( p )

Value:

((p)->_file)

◆ UNUSED

#define UNUSED ( x )

Value:

((void)x)

Function Documentation

◆ ioctl()

int ioctl	(	int	fd,
		int	request,
			... )

extern

Performs a variety of control functions on devices.

The ioctl function manipulates the underlying device parameters of special files. In general, ioctl can control hardware devices, file descriptors, and other resources using a variety of commands.

Parameters

fd	The file descriptor referring to the device.
request	The device-specific request code that specifies the operation to perform.
...	Additional arguments needed for the request. The number and type of these arguments depend on the request code.

Returns: On success, 0 is returned. On error, -1 is returned and errno is set to indicate the error.

Note: The ioctl function is highly device-specific. Each device can have its own set of request codes and corresponding arguments. Refer to the device's documentation for details.

See also: open(); close(); read(); write()