src/lib/FEC/FEC.h

   1 #pragma once
   2
   3 #include "hamming.h"
   4
   5 /**
   6  * @brief Hamming(7,4) + Interleaving
   7  *
   8  * The below functions may look flexible, but they are not!
   9  * Only send it an 8B payload that will go into a 14B FECBuffer.
  10  * The encoding will be ok but interleaving expects 8B going into 14B.
  11  *
  12  * Hamming(7,4) - 4b chucks are converted into a 7b codeword.  Each
  13  * codeword can correct a single bit error during transmission.
  14  *
  15  * Interleaving - The 7b codeword is spread across the entire packet.
  16  * A single bit is placed in every second byte of the payload.  This
  17  * should provide the best defence against burst interference, and single
  18  * bit errors in each codeword can be repaired.
  19  */
  20
  21 void FECEncode(uint8_t *incomingData, uint8_t *FECBuffer);
  22 void FECDecode(uint8_t *incomingFECBuffer, uint8_t *outgoingData);