prbs.c File Reference

#include <stdint.h>
#include <string.h>
#include <osmocom/core/bits.h>
#include <osmocom/core/prbs.h>

Functions
void	osmo_prbs_state_init (struct osmo_prbs_state *st, const struct osmo_prbs *prbs)
	Initialize the given caller-allocated PRBS state.
static void	osmo_prbs_process_bit (struct osmo_prbs_state *state, ubit_t bit)
ubit_t	osmo_prbs_get_ubit (struct osmo_prbs_state *state)
	Get the next bit out of given PRBS instance.
int	osmo_prbs_get_ubits (ubit_t *out, unsigned int out_len, struct osmo_prbs_state *state)
	Fill buffer of unpacked bits with next bits out of given PRBS instance.

Variables
const struct osmo_prbs	osmo_prbs7
	PRBS-7 according ITU-T O.150.
const struct osmo_prbs	osmo_prbs9
	PRBS-9 according ITU-T O.150.
const struct osmo_prbs	osmo_prbs11
	PRBS-11 according ITU-T O.150.
const struct osmo_prbs	osmo_prbs15
	PRBS-15 according ITU-T O.150.

Function Documentation

osmo_prbs_get_ubit()

ubit_t osmo_prbs_get_ubit

(

struct osmo_prbs_state *

state

)

Get the next bit out of given PRBS instance.

References osmo_prbs_process_bit(), osmo_prbs_state::state, and subsys.

Referenced by osmo_prbs_get_ubits().

osmo_prbs_get_ubits()

int osmo_prbs_get_ubits	(	ubit_t *	out,
		unsigned int	out_len,
		struct osmo_prbs_state *	state
	)

Fill buffer of unpacked bits with next bits out of given PRBS instance.

References osmo_prbs_get_ubit(), and subsys.

osmo_prbs_process_bit()

static void osmo_prbs_process_bit ( struct osmo_prbs_state *  state, ubit_t  bit  )

static

References osmo_prbs::coeff, osmo_prbs_state::prbs, osmo_prbs_state::state, and subsys.

Referenced by osmo_prbs_get_ubit().

osmo_prbs_state_init()

void osmo_prbs_state_init	(	struct osmo_prbs_state *	st,
		const struct osmo_prbs *	prbs
	)

Initialize the given caller-allocated PRBS state.

References subsys.

Variable Documentation

osmo_prbs11

const struct osmo_prbs osmo_prbs11

Initial value:

= {
        
        .name = "PRBS-11",
        .len = 11,
        .coeff = (1<<10) | (1<<8),
}

PRBS-11 according ITU-T O.150.

osmo_prbs15

const struct osmo_prbs osmo_prbs15

Initial value:

= {
        
        .name = "PRBS-15",
        .len = 15,
        .coeff = (1<<14) | (1<<13),
}

PRBS-15 according ITU-T O.150.

osmo_prbs7

const struct osmo_prbs osmo_prbs7

Initial value:

= {
        
        .name = "PRBS-7",
        .len = 7,
        .coeff = (1<<6) | (1<<5),
}

PRBS-7 according ITU-T O.150.

osmo_prbs9

const struct osmo_prbs osmo_prbs9

Initial value:

= {
        
        .name = "PRBS-9",
        .len = 9,
        .coeff = (1<<8) | (1<<4),
}

PRBS-9 according ITU-T O.150.