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Merge branch 'bugfix/bitscrambler_eof_mode' into 'master'

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BitScrambler: Fixed the inconsistent EOF mode setting between assembler and driver

See merge request espressif/esp-idf!37499
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morris
2025-03-10 13:22:56 +08:00
parent 9ba552786d ee668ee658
commit 54cfdce964
15 changed files with 143 additions and 11 deletions
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docs/en/api-reference/peripherals/bitscrambler.rst
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@@ -163,7 +163,7 @@ Meta-instructions set global BitScrambler configuration. Meta-instructions are a
Global configuration meta-instructions
""""""""""""""""""""""""""""""""""""""
- ``cfg prefetch true|false``: If prefetch is set to ``true``, the BitScrambler will read 64 bits from the input DMA stream into the input register at startup. If set to ``false``, the input register is initialized to zero. This setting defaults to ``true`` if not specified.
- ``cfg prefetch true|false``: If prefetch is set to ``true``, the BitScrambler will read 64 bits from the input DMA stream into the input register at startup. If set to ``false``, the input register is initialized to zero. This setting defaults to ``true`` if not specified. Please note, if the prefetch is enabled while the input stream can't provide at least 64 bits of data, the BitScrambler will hang.
- ``cfg eof_on upstream|downstream``: After the input stream ends, the BitScrambler will still process a certain amount of 'trailing' dummy bytes so it can flush any data contained in its registers. This setting indicates from where the data will be counted: ``upstream`` makes the bitscrambler count the bytes being read, ``downstream`` makes it count the bytes being written. This defaults to ``upstream`` if not specified.
- ``cfg trailing_bytes N``: This indicates how many dummy bytes will be read or written (depending on the ``eof_on`` setting) before the BitScrambler indicates an end-of-stream on its output. This defaults to ``0`` if not specified.
- ``cfg lut_width_bits 8|16|32``: This selects the bus width of the LUT output RAM, in bits. The LUT can be 2048x8 bits, 1024x16 bits or 512x32 bits in size. This defaults to ``32`` if not specified.