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1.2.1 (2023-07-26)

  • is_url function fixed to solve problems with search and loading libraries.

1.2.0 (2023-07-14)

  • Added ability to generate an editable schematic from a Circuit object. (Currently only works for KiCad V5.)
  • Added Group object for creating hierarchy without using function calls.
  • generate_pcb now takes an optional list of footprint library directories.
  • If not explicitly declared, Part objects will load the default footprint from their symbol definition.
  • Added empty_footprint_handler() for parts without footprints that logs errors by default but can be overriden by the user.
  • Symbol libraries can now be searched on remote repositories by placing the URL in the lib_search_paths dictionary. KiCad V6 symbols are found at https://gitlab.com/kicad/libraries/kicad-symbols/-/raw/master and V5 symbols are at https://raw.githubusercontent.com/KiCad/kicad-symbols/master/.
  • Part pins can now be sorted and retrieved in order using the ordered_pins property.

1.1.0 (2021-10-22)

  • Added generate_pcb() function to create a PCB file directly from a Circuit object. (Currently only works for KiCad.)
  • Added PartTmplt shortcut which creates a Part template using dest=TEMPLATE implicitly.

1.0.0 (2021-05-09)

  • Buses can now be created without names and a name will be automatically assigned. Or use "name=..." to manually assign a name. Or just place a string in the list of arguments and that will be used.
  • Footprint search can now process directories of footprints without the need for an fp-lib-table file.
  • Part fields can now be accessed using attributes.
  • Creating fields requires use of Part.fields[key] instead of Part.key.
  • Added context manager for Circuit object so Parts/Nets can be joined using a with... statement.
  • Adding/removing Parts to/from a Circuit can now be done using += and -=.
  • Tags can be added to Parts and Circuits for hierarchical naming.
  • Part values can now be assigned arbitrary objects including units from either PySpice or Pint.
  • Multi-function pin names can now be split into a collection of shorter aliases, thus reducing the need to access pins using regexes.
  • Schematics can now be automatically using the KiCad symbol graphics for the parts.
  • The library interface now handles the Skywater 130 SPICE libraries.

0.0.30 (2020-05-16)

  • Added @package decorator to make subcircuits act like Parts.
  • Interfaces now act like dictionaries so the ** operator works as expected.
  • Interface I/O can now be accessed using brackets ([]) and via attributes (e.g., intfc.a).
  • Interface I/O can now be assigned aliases.
  • Added tee() function for creating T-junctions in networks.
  • Custom ERCs can now be added using the erc_assert function.
  • Aliases take precedence over default pin names.
  • Substring matching in pin names can be enabled/disabled (off by default).

0.0.29 (2020-01-30)

  • Added XSPICE parts capability to SPICE simulations.
  • Unconnected XSPICE ports now are set to NULL in SPICE node lists.
  • Added no_files() function to disable output to files of netlists, ERCs, logs, backup libs.

0.0.28 (2019-12-17)

  • The zyc utility was split into a separate repository and placed on PyPi.
  • Fixed slicing of grouped part pins so things like ram['A[1]'] won't grab A1, A10, A11, etc.

0.0.27 (2019-12-16)

  • Prevent changing the name of net 0 when generating a SPICE netlist.
  • Fixed Pin, Net, Bus and Part iterators so they'll work in nested loops.
  • Part units are automatically added when a part is parsed.
  • Files are now opened for reading using latin_1 encoding to allow special symbols used by KiCad.
  • Part pins can now be aliased directly, e.g. uc[5].aliases += 'gp0'.
  • Added class method get() to Part to allow finding a part based on name, reference, description.
  • Refactored ERC functions to allow user-extensibility.
  • Created a base object for Circuit, Part, Pin, Net, and Bus objects.
  • Added an aliases property to the SKiDL base object so all its children could be aliased.
  • Updated to perform simulations with ngspice version 30.
  • Added a notes property to allow attachment of user notes to Parts, Pins, Nets, etc.
  • Added net class to net objects for specifying net-specific design rules in PCBNEW.
  • Ignore multiple pins with the same number in symbols with DeMorgan equivalents.
  • Fixed problem with non-ASCII chars (e.g. Ohms) in strings.
  • Sped-up part/net naming using heap/cache, binary search, sets.
  • Sped-up by storing net traversals to avoid recomputation.
  • Fixed processing of slices in things like sdram['A[0:15]'].
  • Sped-up part_search() by eliminating unnecessary part parsing.
  • Improved schematic generation with graphviz.
  • Search now allows AND/OR of parenthesized terms.
  • New GUI for searching for parts and footprints.
  • Footprint libraries to search are now selected from the global fp-lib-table file.
  • KiCad library component field values are now stored in a dict in Part indexed by the field name or F0, F1, F2...
  • KiCad library component field values are also stored as Part attributes using the field name or F0, F1, F2...
  • Added p and n attributes to Part object to permit explicit reference to pin numbers or names.

0.0.26 (2019-01-25)

  • search command no longer looks in backup library because that leads to erroneous hits in all libraries.
  • Part objects will now iterate through their pins and len() will return the number of pins.
  • Updated netlist_to_skidl utility to account for new version of kinparse.

0.0.25 (2018-12-30)

  • Updated website.
  • KISYSMOD is no longer used to find part libraries, only KICAD_SYMBOL_DIR is used now.

0.0.24 (2018-09-15)

  • Fixed an error where creating a backup part library for a design would create extra pins attached to the nets.

0.0.23 (2018-08-25)

  • Added Network objects to make it easy to create serial & parallel combinations of two-pin parts.
  • SKiDL design hierarchy is now embedded in the KiCad netlist that's generated.

0.0.22 (2018-05-XX)

  • Added Interface objects for storing complicated sets of I/O signals for subsystems.
  • ERC no longer redundantly checks every segment of a multi-segment net and reports multiple errors.
  • copy() function of Part, Bus, Pin, Net objects now returns a scalar object while copy(1) returns a list with one object.
  • Bus, Pin, and Net objects now have iterators.
  • Corrected initialization of KiCad library search paths.

0.0.21 (2018-04-30)

  • Added pull() and fetch() methods for getting/creating existing/new Net and Bus objects.
  • Added drive property to pins to override their default pin function attribute.
  • Part pins and units can now be accessed as attributes.
  • Nets, pins, and buses now support the width property.
  • Indexing with brackets now works equivalently for pins, nets, and buses.
  • Grouped part pins (such as address and data buses) can now be accessed using a slice-like notation, e.g. memory['ADDR[0:7]'].

0.0.20 (2018-03-08)

  • Matching of pin lists now begins with normal string matching before using regexes.
  • Added more tests and fixed existing tests.

0.0.19 (2018-02-20)

  • Selecting part pins now looks for exact match before falling back to regex matching.
  • PySpice now needs to be manually installed to perform SPICE simulations.
  • SPICE simulations of subcircuits (.SUBCKT) now supported.
  • Improvements/additions to the library of supported SPICE parts.

0.0.18 (2018-02-07)

  • SPICE simulations of circuits now supported (Python 3 only).

0.0.17 (2018-01-23)

  • Modularized code into separate files.

0.0.16 (2018-01-16)

  • Parsing of KiCad EESchema libraries made more robust.
  • DEFAULT_TOOL replaced with set_default_tool() function.
  • Some code simplification by using a context manager for opening files.

0.0.15 (2018-01-09)

  • Testing made more robust.

0.0.14 (2018-01-05)

  • KiCad netlists are now parsed using the external package kinparse.
  • Cleaned-up pylint-identified issues.
  • Removed absolute file paths to libraries from tests.

0.0.13 (2017-08-20)

  • Fixed problem where the search function was only returning parts found in the last library searched.

0.0.12 (2017-04-20)

  • Use of builtin now works with Python 2 & 3.
  • Started using namedtuple in some places (like net traversal) for clarity.
  • Corrected pin-to-pin connections so if a net is created, it goes into the same Circuit the pins are members of.
  • Part templates can now contain a reference to a Circuit object that will be applied when the template is instantiated.
  • When pins are connected to nets, or nets to nets, the resulting set of connected nets are all given the same name.
  • Buses are not added to a Circuit object if they are already members of it. This fix caused the next problem.
  • Buses weren't getting added to the Circuit object because they already contained a reference to the Circuit. Fixed by clearing ref before adding to Circuit.
  • Created mini_reset() method to clear circuitry without clearing library cache so the libraries don't have to be loaded again (slow).
  • search() utility now prints the names of libraries as they are searched so user sees progress.
  • Fixed exceptions if part definition contained non-unicode stuff.
  • Hide exceptions that occur when using the show() utility.
  • More tests added for NC nets and hand-crafted parts.
  • default_circuit and the NC net for the active circuit are now made accessible in all modules using __builtin__.
  • Corrected error messages that referenced wrong/non-existing variable.
  • Inserted NO_LIB for the library if it doesn't exist when generating KiCad netlists or XML.
  • Attributes can now be passed when creating a Circuit object.
  • Pins are now associated with part when added to the part.
  • Minimum and maximum pins for a part are now computed as needed.
  • Each Circuit object now has its own NC net.
  • Added tests for bus movement and copying.
  • Implemented bus movement between Circuit objects.
  • Additional test cases were created.
  • Nets and Parts can now be removed from Circuits.
  • The circuit that pins and nets are in is now checked before connections are made so cross-circuit connections are not created.
  • Default members were added to Pin and Part objects so they would always exist and not cause errors when missing.
  • Implemented moving Parts and Nets from one circuit to another (almost).
  • Nets with no attached pins are now added to a circuit.
  • Re-wrote some tests to account for the presence of no-pin nets in a circuit.
  • A class method was missing its 'self' argument.
  • Fixed @subcircuit decorator so it won't cause an error if the function it decorates doesn't have a 'circuit' keyword argument.
  • Split the unit tests across multiple files. Added setup/teardown code.
  • Added capability to create multiple, independent Circuit objects to which Parts and Nets can be assigned. The default circuit is still the target if not Circuit is explicitly referenced.
  • Added IOError to exception list for opening a SKiDL part library.

0.0.11 (2017-04-04)

  • Part libraries in SKiDL format are now supported.
  • Parts can now be created on-the-fly and instantiated or added to libraries.
  • The parts used in a circuit can be stored in a backup SKiDL library and used if the original libraries are missing.
  • The KiCad standard part libraries were converted to SKiDL libraries and placed in skidl.libs.

0.0.10 (2017-03-13)

  • Nets without pins can now be merged.
  • Parts and Pins are now sorted when netlists are generated.
  • For an existing Bus, new bus lines can be inserted at any position or the bus can be extended.

0.0.9 (2017-02-16)

  • Use getattr() instead of __class__.__dict__ so that subclasses of SKiDL objects can find attributes named within strings without searching the __mor__.

0.0.8 (2017-01-11)

  • skidl_to_netlist now uses templates.
  • Default operation of search() is now less exacting.
  • Traceback is now suppressed if show() is passed a part name not in a library.

0.0.7 (2016-09-11)

  • Lack of KISYSMOD environment variable no longer causes an exception.
  • requirements.txt file now references the requirements from setup.py.
  • Changed setup so it generates a pckg_info file with version, author, email.

0.0.6 (2016-09-10)

  • Fixed error caused when trying to find script name when SKiDL is run in interactive mode.
  • Silenced errors/warnings when loading KiCad part description (.dcm) files.

0.0.5 (2016-09-07)

  • SKiDL now searches for parts with a user-configurable list of library search paths.
  • Part descriptions and keywords are now loaded from the .dcm file associated with a .lib file.

0.0.4 (2016-08-27)

  • SKiDL scripts can now output netlists in XML format.

0.0.3 (2016-08-25)

  • Added command-line utility to convert netlists into SKiDL programs.

0.0.2 (2016-08-17)

  • Changed the link to the documentation.

0.0.1 (2016-08-16)

  • First release on PyPI.