Contiki 2.6
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Manchester encoding is a bit encoding scheme which translates each bit into two bits: the original bit and the inverted bit. More...
Files | |
file | me.c |
Implementation of the table-driven Manchester encoding and decoding. | |
file | me.h |
Header file for the table-driven Manchester encoding and decoding. | |
Functions | |
unsigned short | me_encode (unsigned char c) |
Manchester encode an 8-bit byte. | |
unsigned char | me_decode16 (unsigned short m) |
Decode a Manchester encoded 16-bit word. | |
unsigned char | me_decode8 (unsigned char m) |
Decode a Manchester encoded 8-bit byte. | |
unsigned char | me_valid (unsigned char m) |
Check if an encoded byte is valid. |
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.
unsigned char me_decode16 | ( | unsigned short | m | ) |
unsigned char me_decode8 | ( | unsigned char | m | ) |
unsigned short me_encode | ( | unsigned char | c | ) |