Utility functions to deal with serial ports

Osmocom serial port helpers. More...

Files
file	serial.h
	Osmocom serial port helpers.
file	serial.c
	Utility functions to deal with serial ports.

Macros
#define	dbg_perror(x)   do { } while (0)

Functions
int	osmo_serial_init (const char *dev, speed_t baudrate)
	Open serial device and does base init. More...
int	osmo_serial_set_baudrate (int fd, speed_t baudrate)
	Change current baudrate. More...
int	osmo_serial_set_custom_baudrate (int fd, int baudrate)
	Change current baudrate to a custom one using OS specific method. More...
int	osmo_serial_clear_custom_baudrate (int fd)
	Clear any custom baudrate. More...
int	osmo_serial_speed_t (unsigned int baudrate, speed_t *speed)
	Convert unsigned integer value to speed_t. More...
static int	_osmo_serial_set_baudrate (int fd, speed_t baudrate)

Detailed Description

Osmocom serial port helpers.

Macro Definition Documentation

dbg_perror

#define dbg_perror

(

x

)

do { } while (0)

Function Documentation

_osmo_serial_set_baudrate()

static int _osmo_serial_set_baudrate ( int  fd, speed_t  baudrate  )

static

References dbg_perror.

Referenced by osmo_serial_set_baudrate(), and osmo_serial_set_custom_baudrate().

osmo_serial_clear_custom_baudrate()

int osmo_serial_clear_custom_baudrate

(

int

fd

)

Clear any custom baudrate.

Parameters

[in]

fd

File descriptor of the open device

Returns

0 for success or negative errno.

This function might not work on all OS or with all type of serial adapters

References dbg_perror.

Referenced by osmo_serial_set_baudrate().

osmo_serial_init()

int osmo_serial_init	(	const char *	dev,
		speed_t	baudrate
	)

Open serial device and does base init.

Parameters

[in]	dev	Path to the device node to open
[in]	baudrate	Baudrate constant (speed_t: B9600, B...)

Returns

>=0 file descriptor in case of success or negative errno.

References dbg_perror, and flags.

osmo_serial_set_baudrate()

int osmo_serial_set_baudrate	(	int	fd,
		speed_t	baudrate
	)

Change current baudrate.

Parameters

[in]	fd	File descriptor of the open device
[in]	baudrate	Baudrate constant (speed_t: B9600, B...)

Returns

0 for success or negative errno.

References _osmo_serial_set_baudrate(), and osmo_serial_clear_custom_baudrate().

osmo_serial_set_custom_baudrate()

int osmo_serial_set_custom_baudrate	(	int	fd,
		int	baudrate
	)

Change current baudrate to a custom one using OS specific method.

Parameters

[in]	fd	File descriptor of the open device
[in]	baudrate	Baudrate as integer

Returns

0 for success or negative errno.

This function might not work on all OS or with all type of serial adapters

References _osmo_serial_set_baudrate(), and dbg_perror.

osmo_serial_speed_t()

int osmo_serial_speed_t	(	unsigned int	baudrate,
		speed_t *	speed
	)

Convert unsigned integer value to speed_t.

Parameters

[in]	baudrate	integer value containing the desired standard baudrate
[out]	speed	the standrd baudrate requested in speed_t format

Returns

0 for success or negative errno.