me.h

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/*
 * Copyright (c) 2005, Swedish Institute of Computer Science
 * All rights reserved.
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/** \addtogroup lib
    @{ */
 
/**
 * \defgroup me Table-driven Manchester encoding and decoding
 *
 * Manchester encoding is a bit encoding scheme which translates each
 * bit into two bits: the original bit and the inverted bit.
 *
 * Manchester encoding is used for transmitting ones and zeroes
 * between two computers. The Manchester encoding reduces the receive
 * oscillator drift by making sure that no consecutive ones or zeroes
 * are ever transmitted.
 *
 * The table driven method of Manchester encoding and decoding uses
 * two tables with 256 entries. One table is a direct mapping of an
 * 8-bit byte into a 16-bit Manchester encoding of the byte. The
 * second table is a mapping of a Manchester encoded 8-bit byte to 4
 * decoded bits.
 *
 * @{
 */

/**
 * \file
 * Header file for the table-driven Manchester encoding and decoding
 * \author
 * Adam Dunkels <adam@sics.se>
 *
 */

#ifndef ME_H_
#define ME_H_

unsigned char  me_valid(unsigned char m);
unsigned short me_encode(unsigned char c);
unsigned char  me_decode16(unsigned short m);
unsigned char  me_decode8(unsigned char m);

#endif /* ME_H_ */

/** @} */
/** @} */