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This avoids floating point number option values, which makes things
a bit easier/clearer on the command-line and also matches what other
decoders do.
Also, use numbers instead of strings for the option values.
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This makes the decoder a lot nicer to use from the command-line.
* num_data_bits -> data_bits
* parity_type -> parity
* num_stop_bits -> stop_bits
* rx_packet_delimiter -> rx_packet_delim
* tx_packet_delimiter -> tx_packet_delim
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Rephrase the test for the availability of at least one of several
optional input signals, and reword the corresponding error message.
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The previous UART decoder implementation announced a 'check_parity'
option which took no effect (support code was missing). Remove it. Add
another 'ignore' parity choice instead, which consumes the parity bit's
position yet always passes the check.
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Generally show "bits" and other smaller annotations in rows that come
before "larger" annotations (in later rows).
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Do more of the calculation with floating point, only trim precision and
enforce integers at the end of the determination of the next sample
point. This shall increase robustness at low capture sample rates.
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Without this, e.g. the recently added 'IDLE' ptype of the UART decoder
would cause issues.
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Detect periods of a frame's length with idle level, and communicate
these time spans to stacked decoders by means of PYTHON output. Do *not*
display these idle frames in regular annotations, for backwards compat.
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The gpib decoder tried to "flush" input data at a user specified sample
number when the input data lacked the respective edge which triggers the
processing during regular operation.
This is rather obscure a feature, not seen in any other decoder, perhaps
a workaround for bug #292, rather unaccessible to users (units of sample
numbers not times nor automatic detection of the EOF condition), highly
confusing according to user reports, and not covered by existing tests.
The mere presence of this option caused severe issues in application
code (see bug #1444). While there is no apparent fix that won't affect
other decoders. So let's drop this questionable feature. Valid and
complete captures should contain all relevent edges and thus decode
properly.
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This is a protocol decoder for the 'ASCII' protocol used by
Amulet Technologies LCDs.
Currently some commands are not implemented yet. I also lack capture data
from a display that will use replies other than ACK and NACK.
Reads are untested as I have no suitable captures.
The PD copes with bus errors (there is an actual bug in the device I'm
reverse engineering) and most of the commands are implemented.
The unimplemented commands should generally consume the correct
number of bytes from the bus, the exception to this are the drawing
commands, because there are actually at least two revisions of them
with different payloads, that are really hard to detect in greedy
algorithm.
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Similar to the recently added [rx|tx]_packet_delimiter options, these
emit summary annotations ("packets") when a certain number of data values
have been decoded.
This is a convenience feature which can be useful when a user wants to
view data which doesn't have a specified delimiter value (as last data
value in the "packet"), but rather fixed-length "packets".
This is just an (intentionally very simple) helper/convenience improvement
and is NOT meant to replace "proper" stacked decoders for UART-based protocols.
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This is a convenience feature that emits summary annotations ("packets")
that comprise all data values that were decoded until a specified delimiter
value is seen (as last data value of the "packet").
Example use-cases include ASCII data where it can be convenient to
"packetize" whenever a 10/0x0A value (newline) is seen, or some
protocols which have a fixed "marker" value (e.g. 0x55) as last
value in the "packet".
The annotations are affected by the selected 'format' option, i.e. the
user can get summaries in ASCII or hex or other formats.
This is just an (intentionally very simple) helper/convenience improvement
and is NOT meant to replace "proper" stacked decoders for UART-based protocols.
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This improves readability a bit in most cases.
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There are various different names that these types of memories are being
referred to in the wild: SPI flash, flash chip, flash, flash EEPROM,
SPI EEPROM, serial flash, serial memory, flash memory, and various others.
In order to make UI decoder selection more useful to the user, we add
the "EEPROM" string to some of the decoder metadata fields, so the
decoder will (for example) show up in PulseView's list of decoders when
the user types "eeprom" to narrow down the listed decoders.
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