gr::satellites::crc_check
gr::block
gr::satellites::crc_check_impl
crc_check.h
boost::shared_ptr< crc_check > typedef boost::shared_ptr<crc_check> gr::satellites::crc_check::sptr sptr gr::satellites::crc_check::sptr
sptr static sptr gr::satellites::crc_check::make (unsigned num_bits, uint64_t poly, uint64_t initial_value, uint64_t final_xor, bool input_reflected, bool result_reflected, bool swap_endianness, bool discard_crc=false, unsigned skip_header_bytes=0) make gr::satellites::crc_check::make unsigned num_bits uint64_t poly uint64_t initial_value uint64_t final_xor bool input_reflected bool result_reflected bool swap_endianness bool discard_crc false unsigned skip_header_bytes 0

Build the CRC append block.

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

discard_crc

If true, the CRC is removed from the PDU before sending it to the output port. If false, the CRC is preserved in the outupt PDU.

skip_header_bytes

gives the number of header byte to skip in the CRC calculation

Check the CRC at the end of a PDU.

The CRC append block receives a PDU containing a CRC at its end, and checks whether the CRC is correct. The PDU is sent over the ok or fail output ports according to the result of this check. It can support any CRC whose size is a multiple of 8 bits between 8 and 64 bits.

gr::block
gr::satellites::crc_check
gr::satellites::crc_check_impl
gr::block
gr::satellites::crc_check
- gr::satellites::crc_check
  make
- gr::satellites::crc_check
  sptr