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authorTrygve Laugstøl <trygvis@inamo.no>2017-09-09 08:33:30 +0200
committerTrygve Laugstøl <trygvis@inamo.no>2017-09-09 08:35:20 +0200
commit2237de33db047b43c8da84a2abe26eb3e3fe6cbe (patch)
tree3c6d7e5814446e1172fea9c524f3f5b5d0c0d369 /src/ee
parent6ea743740ff4524287e5b63a18a45bd19d2451bb (diff)
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wip: Parsing schematics.
Diffstat (limited to 'src/ee')
-rw-r--r--src/ee/__init__.py5
-rw-r--r--src/ee/formatting/__init__.py1
-rw-r--r--src/ee/kicad/__init__.py238
3 files changed, 240 insertions, 4 deletions
diff --git a/src/ee/__init__.py b/src/ee/__init__.py
index e5519f8..b1b825b 100644
--- a/src/ee/__init__.py
+++ b/src/ee/__init__.py
@@ -1,12 +1,11 @@
import numpy as np
__all__ = [
- 'EeError',
+ 'EeException',
'read_ltspice_raw'
]
-
-class EeError(Exception):
+class EeException(Exception):
pass
diff --git a/src/ee/formatting/__init__.py b/src/ee/formatting/__init__.py
index 32eaf64..33673a1 100644
--- a/src/ee/formatting/__init__.py
+++ b/src/ee/formatting/__init__.py
@@ -1,5 +1,4 @@
import math
-from ee import EeError
__all__ = [
'e6', 'e12', 'e24', 'e48', 'e96', 'e192',
diff --git a/src/ee/kicad/__init__.py b/src/ee/kicad/__init__.py
index e69de29..9f6394d 100644
--- a/src/ee/kicad/__init__.py
+++ b/src/ee/kicad/__init__.py
@@ -0,0 +1,238 @@
+import re
+from ee import EeException
+import shlex
+from typing import List
+
+class Position(object):
+ def __init__(self, x, y):
+ self._x = x
+ self._y = y
+
+ @property
+ def x(self):
+ return _x
+
+ @property
+ def y(self):
+ return _y
+
+class ComponentField(object):
+ names = ["Name", "Reference", "Value", "Footprint", "Datasheet"]
+ def __init__(self, index, name, value, position):
+ self._index = index
+ self._name = name if index >= len(ComponentField.names) else ComponentField.names[index]
+ self._value = value
+ self._position = position
+
+ @property
+ def name(self):
+ return self._name
+
+ @property
+ def value(self):
+ return self._value
+
+ @property
+ def position(self):
+ return self._position
+
+class Component(object):
+ def __init__(self, position, timestamp, library, name, unit, ref, fields):
+ self._position = position
+ self._timestamp = timestamp
+ self._library = library
+ self._name = name
+ self._unit = unit
+ self._ref = ref
+ self._fields = fields # type List[ComponentField]
+
+ @property
+ def unit(self):
+ return self._unit
+
+ @property
+ def ref(self):
+ return self._ref
+
+ @property
+ def fields(self) -> List[ComponentField]:
+ return list(self._fields)
+
+ @property
+ def named_fields(self):
+ return [f for f in self._fields if f.name]
+
+class Sheet(object):
+ def __init__(self):
+ self._components = []
+ pass
+
+ @property
+ def components(self):
+ return frozenset(self._components)
+
+ def add_component(self, component):
+ self._components.append(component)
+
+class Library(object):
+ def __init__(self, name):
+ self.name = name
+
+class Schematic(object):
+ def __init__(self):
+ self._libraries = set()
+ self._sheets = [Sheet()]
+ pass
+
+ @property
+ def first_sheet(self):
+ return self._sheets[0]
+
+ @property
+ def libraries(self):
+ return frozenset(self._libraries)
+
+ def add_library(self, library):
+ self._libraries.add(Library(library))
+
+ # Getters
+ @property
+ def components(self):
+ a = []
+ for s in self._sheets:
+ for c in s.components:
+ a.append(c)
+ return a
+
+ def get_component(self, ref, unit = 1):
+ for c in self.components:
+ if c.ref == ref and unit == unit:
+ return c
+
+ raise KeyError("No such component: {}".format(ref))
+
+def read_schematic(path):
+ schematic = Schematic()
+ sheet = None
+
+ def descr_section(lines):
+ print("descr_section: len={}".format(len(lines)))
+ pass
+
+ def comp_section(lines):
+ print("comp_section: len={}".format(len(lines)))
+ timestamp = None
+ position = None
+ library = None
+ name = None
+ unit = None
+ fields = []
+
+ extra_lines = 0
+ for line in lines:
+ if line.startswith((' ', '\t')):
+ parts = line.strip().split(" ")
+ if extra_lines == 0:
+ pass
+ else:
+ # rotation/mirroring, x1, y1, x2, y2
+ pass
+ extra_lines += 1
+ else:
+ parts = shlex.split(line)
+ if len(parts) < 3:
+ raise EeException("Bad component line: {}".format(line))
+
+ if parts[0] == "L" and len(parts) == 3:
+ name = parts[1]
+ ref = parts[2]
+ elif parts[0] == "U" and len(parts) == 4:
+ unit = int(parts[1])
+ # parts[2] == body style
+ timestamp = parts[3]
+ elif parts[0] == "P" and len(parts) == 3:
+ position = Position(int(parts[1]), int(parts[2]))
+ elif parts[0] == "F" and len(parts) >= 10:
+ oritentation = parts[3]
+ pos = Position(int(parts[4]), int(parts[5]))
+ value = parts[2]
+ size = parts[6]
+ attributes = parts[7]
+ justify = parts[8] # One of L, R, C
+ textAttrs = parts[9] # tree characters,
+ # 0: T=top justify, B=bottom justify, C=center
+ # 1: I=italics, N=normal
+ # 2: B=bold, N=normal
+ field_name = parts[10] if len(parts) > 10 else None
+ idx = int(parts[1])
+ if len(fields) != idx:
+ raise EeException("Bad index: {}, expected={}. component={}, line={}".format(idx, len(fields), ref, line))
+ fields.append(ComponentField(idx, field_name, value, pos))
+ else:
+ raise EeException("Bad component field: '{}'".format(line))
+
+ sheet.add_component(Component(position, timestamp, library, name, unit, ref, fields))
+
+ with open(path) as f:
+ header = f.readline()
+ if not "EESchema Schematic File Version" in header:
+ raise EeException("Not a KiCAD schematic file.")
+
+ sheet = schematic.first_sheet
+
+ section_name = None
+ section = []
+
+ seen_end = False
+ while not seen_end:
+ line = f.readline()
+ if not line:
+ break
+
+ line = line.rstrip()
+
+ if section_name:
+ if line.startswith("$End"):
+ print("END SECTION: {}".format(section_name))
+ if section_name == "$Comp":
+ comp_section(section)
+ elif section_name == "$Descr":
+ descr_section(section)
+ else:
+ if line == "$EndSCHEMATIC":
+ seen_end = True
+ break
+ section_name = None
+ else:
+ section.append(line)
+ else:
+ parts = line.split(" ")
+ if line.startswith("EELAYER "):
+ pass # Legacy, ignored
+ elif line.startswith("LIBS:"):
+ schematic.add_library(line[5:])
+ elif line.startswith("$"):
+ section_name = parts[0]
+ print("SECTION: {}".format(section_name))
+ section = []
+ elif line == "Entry Wire Line":
+ f.readline() # ignore the next line for now
+ elif line.startswith("Text Label "):
+ f.readline() # ignore the next line for now
+ elif line.startswith("Text Notes "):
+ f.readline() # ignore the next line for now
+ elif line.startswith("NoConn "):
+ pass
+ elif parts[0:3] == ["Wire", "Notes", "Line"]:
+ f.readline() # ignore the next line for now
+ elif parts[0:3] == ["Wire", "Wire", "Line"]:
+ f.readline() # ignore the next line for now
+ elif parts[0:3] == ["Wire", "Bus", "Line"]:
+ f.readline() # ignore the next line for now
+ elif parts[0:2] == ["Connection", "~"]:
+ pass
+ else:
+ print("line={}, len={}, wat={}".format(line, len(line), parts[0:3]))
+ raise EeException("Bad line: {}".format(line))
+
+ return schematic