bluesync_bitfields.c File Reference

#include <zephyr/kernel.h>
#include "stdio.h"
#include "bluesync_bitfields.h"

Include dependency graph for bluesync_bitfields.c:

Go to the source code of this file.

Functions
void	print_bitfield_as_binary (uint8_t *bitfield, size_t size)
void	set_bit (uint8_t *bitfield, size_t bit_index)
	Set a specific bit in the bitfield.
bool	is_bit_set (uint8_t *bitfield, size_t bit_index)
	Check if a specific bit is set in the bitfield.
void	bitwise_and_bitfields (uint8_t *result, const bluesync_timestamps_t *rcv, const bluesync_timestamps_t *local, size_t num_bytes)
	Perform a bitwise AND between two bitfields and store the result.
static uint8_t	count_bits_in_byte (uint8_t byte)
size_t	count_set_bits (uint8_t *bitfield, size_t num_bytes)
	Count the number of bits set to 1 in a bitfield.

Function Documentation

bitwise_and_bitfields()

void bitwise_and_bitfields	(	uint8_t *	result,
		const bluesync_timestamps_t *	rcv,
		const bluesync_timestamps_t *	local,
		size_t	num_bytes
	)

Perform a bitwise AND between two bitfields and store the result.

This is typically used to find common timestamps (slots) between received and local sets.

Parameters

result	Output buffer where the result will be stored.
rcv	Pointer to the bitfield from received timestamps.
local	Pointer to the bitfield from local timestamps.
num_bytes	Number of bytes in each bitfield.

Definition at line 45 of file bluesync_bitfields.c.

count_bits_in_byte()

static uint8_t count_bits_in_byte ( uint8_t  byte )

inlinestatic

Definition at line 52 of file bluesync_bitfields.c.

count_set_bits()

size_t count_set_bits	(	uint8_t *	bitfield,
		size_t	num_bytes
	)

Count the number of bits set to 1 in a bitfield.

Useful for determining how many timeslots have been received.

Parameters

bitfield	Pointer to the bitfield array.
num_bytes	Number of bytes in the bitfield.

Returns

Number of bits set to 1.

Definition at line 68 of file bluesync_bitfields.c.

is_bit_set()

bool is_bit_set	(	uint8_t *	bitfield,
		size_t	bit_index
	)

Check if a specific bit is set in the bitfield.

Parameters

bitfield	Pointer to the bitfield array.
bit_index	Index of the bit to check.

Returns

true if the bit is set, false otherwise.

Definition at line 41 of file bluesync_bitfields.c.

print_bitfield_as_binary()

void print_bitfield_as_binary	(	uint8_t *	bitfield,
		size_t	size
	)

Definition at line 29 of file bluesync_bitfields.c.

set_bit()

void set_bit	(	uint8_t *	bitfield,
		size_t	bit_index
	)

Set a specific bit in the bitfield.

Parameters

bitfield	Pointer to the bitfield array.
bit_index	Index of the bit to set.

Definition at line 37 of file bluesync_bitfields.c.