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Refactor bit pattern matching.

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Remove AccessCodeCorrelator, Unstuff classes.
This commit is contained in:
Jared Boone 2015-09-28 12:05:36 -07:00
parent f918a774b7
commit 36689f5c45
10 changed files with 116 additions and 150 deletions
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27
firmware/baseband/symbol_coding.hpp
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@ -39,33 +39,6 @@ private:
uint_fast8_t last { 0 };
};
class Unstuff {
public:
uint_fast8_t is_stuffing_bit(const uint_fast8_t symbol) {
history = (history << 1) | (symbol & 1);
return (history & mask) == match;
}
void configure(
const uint32_t pattern,
const size_t length
) {
// Ensure that length=0 (unstuffing disabled) never matches.
match = length ? pattern : 1;
mask = (1U << length) - 1;
reset();
}
void reset() {
history = 0;
}
private:
uint32_t history { 0 };
uint32_t match { 0b111110 };
uint32_t mask { 0b111111 };
};
} /* namespace symbol_coding */
#endif/*__SYMBOL_CODING_H__*/