GNU Radio's SATELLITES Package

gr::satellites::crc_append Class Reference

Calculates and appends a CRC to a PDU. More...

`#include <crc_append.h>`

Inheritance diagram for gr::satellites::crc_append:
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## Public Types
typedef boost::shared_ptr< crc_append > | sptr

## Static Public Member Functions
static sptr | make (unsigned num_bits, uint64_t poly, uint64_t initial_value, uint64_t final_xor, bool input_reflected, bool result_reflected, bool swap_endianness, unsigned skip_header_bytes=0)
| Build the CRC append block.

## Detailed Description

Calculates and appends a CRC to a PDU.

The CRC append block receives a PDU, calculates the CRC of the PDU data, appends it to the PDU, and sends that as its output. It can support any CRC whose size is a multiple of 8 bits between 8 and 64 bits.

## Member Typedef Documentation

## ◆ sptr

typedef boost::shared_ptr<crc_append> gr::satellites::crc_append::sptr

## Member Function Documentation

## ◆ make()

sptr gr::satellites::crc_append::make | ( | unsigned | num_bits,
|  | uint64_t | poly,
|  | uint64_t | initial_value,
|  | uint64_t | final_xor,
|  | bool | input_reflected,
|  | bool | result_reflected,
|  | bool | swap_endianness,
|  | unsigned | skip_header_bytes = 0 )
| static

Build the CRC append block.

Parameters

  num_bits | CRC size in bits (must be a multiple of 8)
  poly | CRC polynomial, in MSB-first notation
  initial_value | Initial register value
  final_xor | Final XOR value
  input_reflected | true if the input is LSB-first, false if not
  result_reflected | true if the output is LSB-first, false if not
  swap_endianness | true if the CRC is stored as little-endian in the PDU, false if not
  skip_header_bytes | gives the number of header byte to skip in the CRC calculation

The documentation for this class was generated from the following file:

- crc_append.h