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#1258 Manchester coding

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This commit is contained in:
Timon Zijnge 2026-02-23 11:32:37 +01:00
parent c742792d03
commit 777f785630
1 changed files with 12 additions and 4 deletions
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16
include/etl/manchester.h
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@ -125,21 +125,27 @@ namespace etl
ETL_STATIC_ASSERT(sizeof(T) == 0, "Manchester decoding type should be one of [uint16_t, uint32_t, uint64_t]");
};
#if ETL_USING_64BIT_TYPES
template <>
struct decoded<uint16_t>
{
typedef uint8_t type;
};
#endif
template <>
struct decoded<uint32_t>
{
typedef uint16_t type;
};
#if ETL_USING_64BIT_TYPES
template <>
struct decoded<uint64_t>
{
typedef uint32_t type;
};
#endif
//*************************************************************************
/// Normal Manchester encoding type (no inversion).
@ -167,7 +173,9 @@ namespace etl
//*************************************************************************
/// Alias for memcpy. etl::mem_copy is not suitable for the Manchester
/// algorithm. This is an alternative way to respect ETL_USING_BUILTIN_MEMCPY
/// algorithm because all memory copies are between different types. This
/// alias is a way to respect ETL_USING_BUILTIN_MEMCPY while using the
/// memcpy function signature
//*************************************************************************
inline void* memcpy(void* dest, const void* src, std::size_t count) ETL_NOEXCEPT
{
@ -320,7 +328,7 @@ namespace etl
//*************************************************************************
/// Encode a span of data with the minimum chunk size. This version is
/// constexpr so that it can be used to decode data at compile time.
/// constexpr so that it can be used to encode data at compile time.
///\param source The source data to encode.
///\param destination The destination buffer for encoded data.
///\tparam TChunk The chunk size for encoding (default: uint_least8_t).
@ -516,11 +524,11 @@ namespace etl
uint16_t chunk{};
if (etl::endianness::value() == etl::endian::little)
{
chunk = static_cast<uint16_t>((encoded[i + 1] << 8) | encoded[i]);
chunk = static_cast<uint16_t>((encoded[i + 1] << CHAR_BIT | encoded[i]);
}
else
{
chunk = static_cast<uint16_t>((encoded[i] << 8) | encoded[i + 1]);
chunk = static_cast<uint16_t>((encoded[i] << CHAR_BIT) | encoded[i + 1]);
}
if (!is_valid<uint16_t>(chunk))