Files
kicad-mcp-server/python/commands/design_rules.py
Tom 2945b52eae feat: Add missing routing/component tools and fix SWIG/UUID bugs
New MCP tools added (TypeScript layer):
- Routing: delete_trace, query_traces, get_nets_list, modify_trace,
  create_netclass, route_differential_pair, refill_zones (with SWIG warning)
- Component: get_component_pads, get_component_list, get_pad_position,
  place_component_array, align_components, duplicate_component

Bug fixes:
- routing.py: Fix SwigPyObject UUID comparison (str() -> m_Uuid.AsString())
- routing.py: Fix SWIG iterator invalidation after board.Remove()
  by converting board.Tracks() to list() before iteration
- routing.py: Add board.SetModified() and clear Python refs after Remove()
  to prevent dangling SWIG pointers crashing subsequent calls
- routing.py: Wrap each track access in try/except in query_traces()
  to gracefully skip invalid track objects after bulk delete
- routing.py: Add missing return statement (mypy fix)
- library.py: Fix search_footprints param mapping search_term->pattern
- library.py: Fix fp.name -> fp.full_name field access
- library.py: Accept both 'pattern' and 'search_term' parameter names
- library.py: Add library filter support in search_footprints
- library.py: Fix loop variable shadowing Path object (mypy fix)
- design_rules.py: Add type annotation for violation_counts (mypy fix)

Contribution guidelines followed (CONTRIBUTING.md):
- black python/ applied (3 touched files pass without changes)
- mypy python/ passes with 0 errors on all changed files
- npx prettier --write applied to changed TypeScript files
- npm run build passes (tsc --noEmit: 0 errors)
- Commit messages follow feat:/fix: convention

Note on diff size: The large insertion/deletion count in the changed files
is due to black and prettier reformatting previously unformatted code
(missing trailing commas, quote style, line length). The actual logic
changes are limited to the 6 files listed above.

Note: refill_zones has known SWIG segfault risk (see KNOWN_ISSUES.md).
Prefer IPC backend (KiCAD open) or zone fill via KiCAD UI.
2026-02-27 18:15:46 +01:00

468 lines
19 KiB
Python

"""
Design rules command implementations for KiCAD interface
"""
import os
import pcbnew
import logging
from typing import Dict, Any, Optional, List, Tuple
logger = logging.getLogger("kicad_interface")
class DesignRuleCommands:
"""Handles design rule checking and configuration"""
def __init__(self, board: Optional[pcbnew.BOARD] = None):
"""Initialize with optional board instance"""
self.board = board
def set_design_rules(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""Set design rules for the PCB"""
try:
if not self.board:
return {
"success": False,
"message": "No board is loaded",
"errorDetails": "Load or create a board first",
}
design_settings = self.board.GetDesignSettings()
# Convert mm to nanometers for KiCAD internal units
scale = 1000000 # mm to nm
# Set clearance
if "clearance" in params:
design_settings.m_MinClearance = int(params["clearance"] * scale)
# KiCAD 9.0: Use SetCustom* methods instead of SetCurrent* (which were removed)
# Track if we set any custom track/via values
custom_values_set = False
if "trackWidth" in params:
design_settings.SetCustomTrackWidth(int(params["trackWidth"] * scale))
custom_values_set = True
# Via settings
if "viaDiameter" in params:
design_settings.SetCustomViaSize(int(params["viaDiameter"] * scale))
custom_values_set = True
if "viaDrill" in params:
design_settings.SetCustomViaDrill(int(params["viaDrill"] * scale))
custom_values_set = True
# KiCAD 9.0: Activate custom track/via values so they become the current values
if custom_values_set:
design_settings.UseCustomTrackViaSize(True)
# Set micro via settings (use properties - methods removed in KiCAD 9.0)
if "microViaDiameter" in params:
design_settings.m_MicroViasMinSize = int(
params["microViaDiameter"] * scale
)
if "microViaDrill" in params:
design_settings.m_MicroViasMinDrill = int(
params["microViaDrill"] * scale
)
# Set minimum values
if "minTrackWidth" in params:
design_settings.m_TrackMinWidth = int(params["minTrackWidth"] * scale)
if "minViaDiameter" in params:
design_settings.m_ViasMinSize = int(params["minViaDiameter"] * scale)
# KiCAD 9.0: m_ViasMinDrill removed - use m_MinThroughDrill instead
if "minViaDrill" in params:
design_settings.m_MinThroughDrill = int(params["minViaDrill"] * scale)
if "minMicroViaDiameter" in params:
design_settings.m_MicroViasMinSize = int(
params["minMicroViaDiameter"] * scale
)
if "minMicroViaDrill" in params:
design_settings.m_MicroViasMinDrill = int(
params["minMicroViaDrill"] * scale
)
# KiCAD 9.0: m_MinHoleDiameter removed - use m_MinThroughDrill
if "minHoleDiameter" in params:
design_settings.m_MinThroughDrill = int(
params["minHoleDiameter"] * scale
)
# KiCAD 9.0: Added hole clearance settings
if "holeClearance" in params:
design_settings.m_HoleClearance = int(params["holeClearance"] * scale)
if "holeToHoleMin" in params:
design_settings.m_HoleToHoleMin = int(params["holeToHoleMin"] * scale)
# Build response with KiCAD 9.0 compatible properties
# After UseCustomTrackViaSize(True), GetCurrent* returns the custom values
response_rules = {
"clearance": design_settings.m_MinClearance / scale,
"trackWidth": design_settings.GetCurrentTrackWidth() / scale,
"viaDiameter": design_settings.GetCurrentViaSize() / scale,
"viaDrill": design_settings.GetCurrentViaDrill() / scale,
"microViaDiameter": design_settings.m_MicroViasMinSize / scale,
"microViaDrill": design_settings.m_MicroViasMinDrill / scale,
"minTrackWidth": design_settings.m_TrackMinWidth / scale,
"minViaDiameter": design_settings.m_ViasMinSize / scale,
"minThroughDrill": design_settings.m_MinThroughDrill / scale,
"minMicroViaDiameter": design_settings.m_MicroViasMinSize / scale,
"minMicroViaDrill": design_settings.m_MicroViasMinDrill / scale,
"holeClearance": design_settings.m_HoleClearance / scale,
"holeToHoleMin": design_settings.m_HoleToHoleMin / scale,
"viasMinAnnularWidth": design_settings.m_ViasMinAnnularWidth / scale,
}
return {
"success": True,
"message": "Updated design rules",
"rules": response_rules,
}
except Exception as e:
logger.error(f"Error setting design rules: {str(e)}")
return {
"success": False,
"message": "Failed to set design rules",
"errorDetails": str(e),
}
def get_design_rules(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""Get current design rules - KiCAD 9.0 compatible"""
try:
if not self.board:
return {
"success": False,
"message": "No board is loaded",
"errorDetails": "Load or create a board first",
}
design_settings = self.board.GetDesignSettings()
scale = 1000000 # nm to mm
# Build rules dict with KiCAD 9.0 compatible properties
rules = {
# Core clearance and track settings
"clearance": design_settings.m_MinClearance / scale,
"trackWidth": design_settings.GetCurrentTrackWidth() / scale,
"minTrackWidth": design_settings.m_TrackMinWidth / scale,
# Via settings (current values from methods)
"viaDiameter": design_settings.GetCurrentViaSize() / scale,
"viaDrill": design_settings.GetCurrentViaDrill() / scale,
# Via minimum values
"minViaDiameter": design_settings.m_ViasMinSize / scale,
"viasMinAnnularWidth": design_settings.m_ViasMinAnnularWidth / scale,
# Micro via settings
"microViaDiameter": design_settings.m_MicroViasMinSize / scale,
"microViaDrill": design_settings.m_MicroViasMinDrill / scale,
"minMicroViaDiameter": design_settings.m_MicroViasMinSize / scale,
"minMicroViaDrill": design_settings.m_MicroViasMinDrill / scale,
# KiCAD 9.0: Hole and drill settings (replaces removed m_ViasMinDrill and m_MinHoleDiameter)
"minThroughDrill": design_settings.m_MinThroughDrill / scale,
"holeClearance": design_settings.m_HoleClearance / scale,
"holeToHoleMin": design_settings.m_HoleToHoleMin / scale,
# Other constraints
"copperEdgeClearance": design_settings.m_CopperEdgeClearance / scale,
"silkClearance": design_settings.m_SilkClearance / scale,
}
return {"success": True, "rules": rules}
except Exception as e:
logger.error(f"Error getting design rules: {str(e)}")
return {
"success": False,
"message": "Failed to get design rules",
"errorDetails": str(e),
}
def run_drc(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""Run Design Rule Check using kicad-cli"""
import subprocess
import json
import tempfile
import platform
import shutil
try:
if not self.board:
return {
"success": False,
"message": "No board is loaded",
"errorDetails": "Load or create a board first",
}
report_path = params.get("reportPath")
# Get the board file path
board_file = self.board.GetFileName()
if not board_file or not os.path.exists(board_file):
return {
"success": False,
"message": "Board file not found",
"errorDetails": "Cannot run DRC without a saved board file",
}
# Find kicad-cli executable
kicad_cli = self._find_kicad_cli()
if not kicad_cli:
return {
"success": False,
"message": "kicad-cli not found",
"errorDetails": "KiCAD CLI tool not found in system. Install KiCAD 8.0+ or set PATH.",
}
# Create temporary JSON output file
with tempfile.NamedTemporaryFile(
mode="w", suffix=".json", delete=False
) as tmp:
json_output = tmp.name
try:
# Build command
cmd = [
kicad_cli,
"pcb",
"drc",
"--format",
"json",
"--output",
json_output,
"--units",
"mm",
board_file,
]
logger.info(f"Running DRC command: {' '.join(cmd)}")
# Run DRC
result = subprocess.run(
cmd,
capture_output=True,
text=True,
timeout=600, # 10 minute timeout for large boards (21MB PCB needs time)
)
if result.returncode != 0:
logger.error(f"DRC command failed: {result.stderr}")
return {
"success": False,
"message": "DRC command failed",
"errorDetails": result.stderr,
}
# Read JSON output
with open(json_output, "r", encoding="utf-8") as f:
drc_data = json.load(f)
# Parse violations from kicad-cli output
violations = []
violation_counts: dict[str, int] = {}
severity_counts = {"error": 0, "warning": 0, "info": 0}
for violation in drc_data.get("violations", []):
vtype = violation.get("type", "unknown")
vseverity = violation.get("severity", "error")
violations.append(
{
"type": vtype,
"severity": vseverity,
"message": violation.get("description", ""),
"location": {
"x": violation.get("x", 0),
"y": violation.get("y", 0),
"unit": "mm",
},
}
)
# Count violations by type
violation_counts[vtype] = violation_counts.get(vtype, 0) + 1
# Count by severity
if vseverity in severity_counts:
severity_counts[vseverity] += 1
# Determine where to save the violations file
board_dir = os.path.dirname(board_file)
board_name = os.path.splitext(os.path.basename(board_file))[0]
violations_file = os.path.join(
board_dir, f"{board_name}_drc_violations.json"
)
# Always save violations to JSON file (for large result sets)
with open(violations_file, "w", encoding="utf-8") as f:
json.dump(
{
"board": board_file,
"timestamp": drc_data.get("date", "unknown"),
"total_violations": len(violations),
"violation_counts": violation_counts,
"severity_counts": severity_counts,
"violations": violations,
},
f,
indent=2,
)
# Save text report if requested
if report_path:
report_path = os.path.abspath(os.path.expanduser(report_path))
cmd_report = [
kicad_cli,
"pcb",
"drc",
"--format",
"report",
"--output",
report_path,
"--units",
"mm",
board_file,
]
subprocess.run(cmd_report, capture_output=True, timeout=600)
# Return summary only (not full violations list)
return {
"success": True,
"message": f"Found {len(violations)} DRC violations",
"summary": {
"total": len(violations),
"by_severity": severity_counts,
"by_type": violation_counts,
},
"violationsFile": violations_file,
"reportPath": report_path if report_path else None,
}
finally:
# Clean up temp JSON file
if os.path.exists(json_output):
os.unlink(json_output)
except subprocess.TimeoutExpired:
logger.error("DRC command timed out")
return {
"success": False,
"message": "DRC command timed out",
"errorDetails": "Command took longer than 600 seconds (10 minutes)",
}
except Exception as e:
logger.error(f"Error running DRC: {str(e)}")
return {
"success": False,
"message": "Failed to run DRC",
"errorDetails": str(e),
}
def _find_kicad_cli(self) -> Optional[str]:
"""Find kicad-cli executable"""
import platform
import shutil
# Try system PATH first
cli_name = "kicad-cli.exe" if platform.system() == "Windows" else "kicad-cli"
cli_path = shutil.which(cli_name)
if cli_path:
return cli_path
# Try common installation paths (version-specific)
if platform.system() == "Windows":
common_paths = [
r"C:\Program Files\KiCad\10.0\bin\kicad-cli.exe",
r"C:\Program Files\KiCad\9.0\bin\kicad-cli.exe",
r"C:\Program Files\KiCad\8.0\bin\kicad-cli.exe",
r"C:\Program Files (x86)\KiCad\10.0\bin\kicad-cli.exe",
r"C:\Program Files (x86)\KiCad\9.0\bin\kicad-cli.exe",
r"C:\Program Files (x86)\KiCad\8.0\bin\kicad-cli.exe",
r"C:\Program Files\KiCad\bin\kicad-cli.exe",
]
for path in common_paths:
if os.path.exists(path):
return path
elif platform.system() == "Darwin": # macOS
common_paths = [
"/Applications/KiCad/KiCad.app/Contents/MacOS/kicad-cli",
"/usr/local/bin/kicad-cli",
]
for path in common_paths:
if os.path.exists(path):
return path
else: # Linux
common_paths = [
"/usr/bin/kicad-cli",
"/usr/local/bin/kicad-cli",
]
for path in common_paths:
if os.path.exists(path):
return path
return None
def get_drc_violations(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""
Get list of DRC violations
Note: This command internally uses run_drc() which calls kicad-cli.
The old BOARD.GetDRCMarkers() API was removed in KiCAD 9.0.
This implementation provides backward compatibility by parsing kicad-cli output.
"""
import json
try:
if not self.board:
return {
"success": False,
"message": "No board is loaded",
"errorDetails": "Load or create a board first",
}
severity = params.get("severity", "all")
# Run DRC using kicad-cli (this saves violations to JSON file)
drc_result = self.run_drc({})
if not drc_result.get("success"):
return drc_result # Return the error from run_drc
# Read violations from the saved JSON file
violations_file = drc_result.get("violationsFile")
if not violations_file or not os.path.exists(violations_file):
return {
"success": False,
"message": "Violations file not found",
"errorDetails": "run_drc did not create violations file",
}
# Load violations from file
with open(violations_file, "r", encoding="utf-8") as f:
data = json.load(f)
all_violations = data.get("violations", [])
# Filter by severity if specified
if severity != "all":
filtered_violations = [
v for v in all_violations if v.get("severity") == severity
]
else:
filtered_violations = all_violations
return {
"success": True,
"violations": filtered_violations,
"violationsFile": violations_file, # Include file path for reference
}
except Exception as e:
logger.error(f"Error getting DRC violations: {str(e)}")
return {
"success": False,
"message": "Failed to get DRC violations",
"errorDetails": str(e),
}