Bit Reversal Library

This library provides functions for reversing bits in bytes and byte arrays. More...

Files
file	os/lib/bitrev.c
	Bit reversal library implementation.
file	os/lib/bitrev.h
	Bit reversal library header.

Functions
uint8_t	bitrev_byte (uint8_t byte)
	Reverse the bits in a single byte.
void	bitrev_array (uint8_t *data, size_t len)
	Reverse bits in all bytes of an array (in-place).
void	bitrev_array_copy (const uint8_t *input, uint8_t *output, size_t len)
	Reverse bits in all bytes of an array (copy to output).

Detailed Description

This library provides functions for reversing bits in bytes and byte arrays.

It's commonly used by radio drivers for protocol compliance (e.g., 802.15.4g).

Function Documentation

bitrev_array()

void bitrev_array	(	uint8_t *	data,
		size_t	len )

Reverse bits in all bytes of an array (in-place).

Parameters

data	Pointer to the data array
len	Length of the array in bytes

This function modifies the input array in-place, reversing the bit order within each byte. Commonly used for protocol compliance.

Definition at line 72 of file bitrev.c.

Referenced by read().

bitrev_array_copy()

void bitrev_array_copy	(	const uint8_t *	input,
		uint8_t *	output,
		size_t	len )

Reverse bits in all bytes of an array (copy to output).

Parameters

input	Pointer to the input data array
output	Pointer to the output data array
len	Length of the arrays in bytes

This function copies data from input to output while reversing the bit order within each byte. Input and output arrays must not overlap.

Definition at line 81 of file bitrev.c.

bitrev_byte()

uint8_t bitrev_byte

(

uint8_t

byte

)

Reverse the bits in a single byte.

Parameters

byte	The input byte

Returns

The byte with bits reversed

Example: bitrev_byte(0xF0) returns 0x0F

Definition at line 66 of file bitrev.c.