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Commits on Jul 14, 2013
  1. Fixed compiler warnings.

    authored
Commits on May 29, 2013
  1. @matthijskooijman

    Adapt UART analysis tests to previous changes.

    matthijskooijman authored
     - The inversion-related setting have changed, so use the new setters
       for this.
     - For one test case, the number of detected errors dropped a bit. Note
       that that this isn't just that the new code analyzes the data better,
       since at some points it sees errors where the old code didn't.
       However, the capture contains a lot of noise in some places, which
       means it's not entirely clear what "correct" should be. Manual
       comparison of the testcase shows that the new code doesn't do
       obviously incorrect things, so just updating the test case to the new
       values makes sense.
  2. @matthijskooijman

    Issue #175: Add new "Idle level" option to UART decoder.

    matthijskooijman authored
     - This option allows changing the idle level from the default HIGH
       level to low, affecting the expected value of the start and stop
       bits. The interpretation of the data and parity bits is unchanged
       (and can be influenced with the existing bit encoding toggle).
  3. @matthijskooijman
  4. @matthijskooijman
  5. @matthijskooijman
  6. @matthijskooijman
  7. @matthijskooijman
  8. @matthijskooijman

    Improve the BaudRateAnalyzer autodetection

    matthijskooijman authored
     - Previously, the most commonly seen length between edges was used as
       the length of one bit. Now, the (weighted) average of all lengths
       near the the most commonly seen length is used, which helps a lot
       when the sampling rate isn't very high (since there is no longer a
       rounding error from rounding to an integer number of samples).
  9. @matthijskooijman

    Let the async data decoder actually measure bit length differences

    matthijskooijman authored
     - The previous commit made the decoder resync whenever it saw an edge
       in the area where it would expect one. This helps decoding a signal
       where the baudrate / bit length is not entirely correct, but from
       these corrections we can again calculate the real baudrate / bit
       length.
    
     - This is done by keeping a running total of the number and length of
       bits we find between two confirmed edges, from which we can calculate
       an average at the end, from which the baudrate is calculated again.
  10. @matthijskooijman

    Let the async data decoder resync on every edge it sees.

    matthijskooijman authored
     - This helps to decode signals when there is a small error in the
       baudrate, provided that there are sufficient edges inside the byte.
  11. @matthijskooijman

    Make all bit lengths double in the async data decoder.

    matthijskooijman authored
     - In addition, the "current time" variable is also made a double.
       Combined, these prevent effectively rounding to the nearest full
       sample time after every bit, which can cause decoding errors when 8
       of those rounding errors are stacked.
     - This commit significantly improves decoding for low samplerates
       (tested with a samplerate of 50Khz and a baudrate of 9600),
       especially when the baudrate is not (near) an integer fraction of the
       samplerate.
  12. @matthijskooijman

    Only use the BaudRateAnalyzer when autodetecting.

    matthijskooijman authored
     - Before, the analyzer also took care of normalizing the displayed
       baud rate to one of the standard ones and normalizing the baud rate
       passed to the async data decoder to a fraction of the sample rate.
     - Now, when the user enters a non-standard baudrate, it is actually
       displayed as entered (normalization to standard baud rates is still
       used when auto-detecting).
     - Now, when the user enters a non-standard baudrate, it is actually
       passed as entered to the async data decoder (which currently does the
       same fraction of samplerate normalization, but this will change
       next).
  13. @matthijskooijman

    Calculate exact baudrate from the bitlength used by the async data de…

    matthijskooijman authored
    …coder.
    
     - Previously, the bit length calculated by the BaudRateAnalyzer was
       used for this. However, this bit length was used to calculate the
       baud rate, which was used by the data decoder again to calculate the
       actual bit length to use.
     - This commit should not change any behaviour, since these two bit
       lengths should be the same.
     - This commit prepares for subsequent commits, which allow these values
       to become different and/or allow running without a BaudRateAnalyzer
       at all.
  14. @matthijskooijman

    Let UARTDataSet calculate its exact baudrate.

    matthijskooijman authored
     - Previously, this baudrate was set explicitely by UARTAnalyserTask.
       Now it is calculated based on the bit length set by UARTAnalyserTask.
       This also means that the bit length averaging code (e.g., taking the
       average bit length between TX and RX lines) is actually used now,
       which could improve the exact baudrate calculation.
  15. @matthijskooijman

    Remove useless check in UARTDataSet.setSampledBitLength().

    matthijskooijman authored
     - diff is the result of Math.abs, it can never be negative.
  16. @matthijskooijman

    Fix and simplify parity checking in the async data decoder.

    matthijskooijman authored
     - This was broken a few commits ago by changes in the inverting
       behaviour. Now, we introduce the proper support for inverting bits
       when reading them, instead of as a post-processing step on the
       complete byte, which makes sure the parity bit is also properly
       inverted before checking.
  17. @matthijskooijman

    Introduce DataBitExtractor helper class in the async data decoder.

    matthijskooijman authored
     - This makes the sampling of bits happen in single place in a
       consistent way, preparing for upcoming commits. No actual behaviour
       should be modified by this commit, effectively only code is moved
       around.
  18. @matthijskooijman

    Change stop bit handling in async data decoder.

    matthijskooijman authored
     - Instead of checking each stop bit separately, it now regards the stop
       bits more like a stop period: the value is checked during the first
       bit length and then the length of the stop period is checked by
       finding the next start bit.
    
       This change prepares for a next change, which has a bit of trouble
       handling the value of half bits properly (which is now no longer
       needed).
    
     - As an extra bonus, this commit also prevents decoding bytes after
       endOfDecode. The previous code would check if there was still enough
       room for an entire byte after the previous byte, now the check changed
       to see if there is enough room after the start bit, which makes more
       sense.
  19. @matthijskooijman

    Issue #175: Remove unneeded inverting in async serial data decoder.

    matthijskooijman authored
     - The getDataValue method inverted all signals, but isMark and isSpace
       inverted the value again, meaning a space is always low voltage and a
       mark is always high voltage. The start bit detection also corrected
       this inversion, so a start bit is always a space/low voltage.
     - Then, the data bits themselves are inverted again, which is
       essentially the only inversion necessary.
     - The parity bits used to compare the three-times inverted databits
       with the one-time inverted bit from getDataValue / isExpectedLevel.
       Now that getDataValue no longer inverts, the parity calculation is
       wrong when inverting. This will be fixed later on.
     - Note that the invert setting only effectively inverts the databits.
       This might not be what it intended to do, but that can be corrected
       in a later commit.
Commits on May 9, 2013
Commits on Mar 13, 2013
Commits on Feb 5, 2013
Commits on Aug 18, 2012
  1. Fixed issue #114: when the user settings contain incorrect indexes fo…

    authored
    …r comboboxes a crash occurs.
Commits on Jun 19, 2012
  1. Fixed a problem with the initialization of extenders; due to the refa…

    authored
    …ctoring to DM it no longer called certain init methods. This could lead to NPEs in certain situations.
Commits on Jun 6, 2012
Commits on Jun 5, 2012
  1. Split out the async serial data decoder from the tool itself, to allo…

    authored
    …w reuse in other bundles.
Commits on Feb 27, 2012
Commits on Feb 26, 2012
Commits on Jan 23, 2012
  1. Introduced concept of channel and cursor into the api; lots of refact…

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    …oring going on. Still massive bugs to fix.
Commits on Jan 12, 2012
  1. Integration of new signal display component:

    authored
    - it compiles, and runs, but not everything works yet;
    - the docking windows don't yet appear (not enabled yet);
    - there are some redundancies in code left;
    - and other bugs to be fixed.
Commits on Jan 11, 2012
  1. Some UI cleanups; separate checkbox for auto-detection of baudrates m…

    authored
    …akes the baudrate editor simpler and more user-friendlier.
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