Description
C implementation of Reed-Solomon error-correction codes. For detection syndrome decoding is used. Works in GF(256).
- highly portable, includes only
stdio.handstdlib.h - header-only
- syndrome decoding
- implemented for t=1 and t=2 (can locate and correct 1 or 2 errors), probably I'll implement for more
- tested on Ubuntu and Arduino Nano (for Arduino, change contents of
fatalandvector_printmethods fromutil.h, because it has noprintfandexitmethods)
How to use
To build and run tests:
mkdir build
cd build
cmake ..
make
ctestHow to use:
#include "rs.h"
int main(){
// sender side
uint8_t* msg = (uint8_t*)"hello world";
uint8_t t = 2; // we want to fix 2 mistakes at max
uint32_t len = 0; // new length of codeword will be 2*t + len(msg)
uint8_t *codeword = encode_message(msg, strlength(msg), t, &len); // yes, I know about strlen. for this I need to include one more header, but I don't want
// send codeword through noisy channel
// receiver side
uint8_t out_len = 0; // length of decoded message
uint8_t *corrected_msg = decode_message(codeword, len, t, &out_len);
printf("%s\n", corrected_msg); // "hello world"
return 0;
}