diff options
Diffstat (limited to 'gr-digital/include/gnuradio/digital/packet_header_default.h')
| -rw-r--r-- | gr-digital/include/gnuradio/digital/packet_header_default.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gr-digital/include/gnuradio/digital/packet_header_default.h b/gr-digital/include/gnuradio/digital/packet_header_default.h index 0654a32a63..6567dd7626 100644 --- a/gr-digital/include/gnuradio/digital/packet_header_default.h +++ b/gr-digital/include/gnuradio/digital/packet_header_default.h @@ -25,6 +25,7 @@ #include <gnuradio/tags.h> #include <gnuradio/digital/api.h> #include <boost/enable_shared_from_this.hpp> +#include <boost/crc.hpp> namespace gr { namespace digital { @@ -69,12 +70,15 @@ namespace gr { * * Uses the following header format: * Bits 0-11: The packet length (what was stored in the tag with key \p len_tag_key) - * Bits 12-27: The header number (counts up everytime this function is called) - * Bit 28: Even parity bit + * Bits 12-23: The header number (counts up everytime this function is called) + * Bit 24-31: 8-Bit CRC * All other bits: Are set to zero * - * If the header length is smaller than 29, bits are simply left out. For this + * If the header length is smaller than 32, bits are simply left out. For this * reason, they always start with the LSB. + * + * However, it is recommended to stay above 32 Bits, in order to have a working + * CRC. */ virtual bool header_formatter( long packet_len, @@ -104,6 +108,7 @@ namespace gr { int d_bits_per_byte; unsigned d_header_number; unsigned d_mask; + boost::crc_optimal<8, 0x07, 0xFF, 0x00, false, false> d_crc_impl; }; } // namespace digital |