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Users may not know which unit the "wordsize" is supposed to get
specified in. Especially when it's not a number of bits, but instead
the number of bus cycles. Expand the description text accordingly.
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Print all annotations for individual data bit items and for the
de-multiplexed words in a consistent style with leading zeros and
constant width. This shall lend itself better to quick navigation
during visual inspection, as well as automatic processing.
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The previous implementation prepared but never fully enabled the
accumulation of several multi-bit items into words that span multiple
bus cycles (think: address or data de-multiplexing on memory busses).
Complete the accumulation, and fixup the end samplenumber for word
annotations. Fixup the endianess logic (the condition was inverted).
Rephrase calculation to be more Python idiomatic.
Default to word size zero, and only emit word annotations for non-zero
word size specs. This keeps the implementation backwards compatible and
still passes the test suite. Default behaviour is most appropriate for
interactive use in GUI environments, while automated processing will
find consistent behaviour across all setups (non-multiplexed busses, and
multiplexed busses with "words" that span one or multiple cycles).
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Cope when users only provide e.g. input lines D0 and D2 to the parallel
decoder. Assume that not-connected pins are "always zero".
Rephrase the .decode() logic which determines .wait() conditions while
we are here, to slightly unobfuscate the implementation.
This fixes bug #1088.
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Remove the redundant .itemcount variable, which exactly corresponds to
the length of the .items array.
Arrange retrieval of options and their evaluation closer to each other
for improved readability.
Use common logic to construct "words" from several multi-bit "items".
Arrange for endianess support by optionally reversing the array before
traversal.
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Instead of implementing two main loops for operation in the presence and
in the absence of a clock line, use a common main loop which operates on
pre-determined wait conditions.
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Move initialization code of protocol decoders from the constructor to a
new reset() helper method. The libsigrokdecode backend could run this
method several times to clear the decoder's internal state, before new
data from another acquisition gets fed to decode() calls.
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This allows frontends to set the assumed initial pins (i.e., the assumed
state of the pins before the first sample of a capture) to user-specified
values.
The assumed initial pins can be either low, or high, or "use same value
as the first sample of the capture".
The special self.initial_pins decoder attribute is now removed.
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Some PDs were using a temporary workaround for (as it turned out) a
refcounting issue that was fixed in 066fbafdc3ba734a73b5f7fcfa1dbae67ddebf8a.
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Remove the FSF postal address as it might change (it did in the past).
Reference the gnu.org website instead which is more stable.
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- No newlines at the end of files.
- No trailing ';' characters.
- Comparison with None: Use 'is None' or 'is not None'.
- Comparison with True/False: Use 'if cond:' or 'if not cond:'.
- Various minor whitespace fixes.
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In all current PDs it is not necessary to raise an exception upon
invalid states (of the PD's state machine), since we can guarantee that
no such invalid state can ever be reached in these PDs.
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Older libsigrokdecode versions are no longer able to use the current
versions of the PDs (various changes in syntax etc).
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Variables of type 'struct srd_channel *' are consistently named 'pdch' to
make them easily distinguishable from libsigrok's 'struct sr_channel *'
variables that are consistently named 'ch'.
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Annotation entries also consist of a tuple, not a list.
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Each option consists of a dictionary with the following keys:
id The option id, which is passed in when setting a value.
desc A description of the option, suitable for display.
def The default value for this option.
values (optional) If present, a tuple containing values the option
may take. They must be of the same type as the default.
Valid types for the options are UTF-8-encoded strings, integers, and
floating point values.
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The output type is now called OUTPUT_PYTHON, adapt all PDs to that.
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The single comment re-stating the PD's name / description / purpose in
each pd.py file is not really needed, that info is available in the
Decoder class' attributes already.
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When no CLK probe is supplied to this PD, handle any transition on
any of the supplied data probes as if there had been a CLK transition.
(based on a suggestion/patch by "bmx" from the #sigrok channel, thanks!)
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This fixes bug #202.
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This better reflects what it is: a python object generated and
processed by python code.
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This will be increased again at some later point.
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