请写KICAD中电源层到板框之间间距为40mil的自定义规则代码给我

在KiCad中，你可以通过添加PCB Design Rules (DR) 来指定电源层到板框之间的间距。这是一个基本的Python脚本示例，用于设置40 mil（约10.16mm）的间距，假设你正在使用Kicad 6.x版本的Scripting API：

# 导入 KiCad API
import os
from kicad-footprint-Edge Spacing"
rule_description = "Sets a custom power plane to board edge spacing of 40 mils"

# 设置间距值
spacing_mils = 40

# 将英制单位转换为KiCad使用的毫米
spacing_mm = spacing_mils / 1000

# 创建规则
def create_rule():
    rule = {
        'name': rule_name,
        'description': rule_description,
        'settings': [
            {'name': 'Spacing', 'type': 'float', 'default': spacing_mm},
            # 可能还需要其他规则设置，如允许的最大偏差等
        ],
        'checkers': [
            {
                'function': '_check_power_to_edge_spacing',
                'args': [spacing_mm],
            }
        ]
    }

    return rule

# 自检查函数，确认间距是否满足要求
def _check_power_to_edge_spacing(minimum_spacing_mm):
    def checker(board):
        for layer in ['F_Signal', 'F_Power']:
            if board.getNetInfo().power_layer(layer):
                # 检查电源层边缘到板框的距离
                for pin in board.getPadStackInstancesOnLayer(layer):
                    distance = pin.xy[1] - board.getEdgeXY()[0]
                    if distance < minimum_spacing_mm:
                        return False, f"Power pad {pin.name} too close to edge (<{minimum_spacing_mm} mm)"
        return True, ""

    return checker

# 添加规则到默认规则文件（若存在）
rules_file_path = os.path.join(kicad_mod.config['config_dir'], 'modules.drl')
if not os.path.exists(rules_file_path):
    open(rules_file_path, 'w').write("")
with open(rules_file_path, 'a') as rules_file:
    rules_file.write(f"# {rule_name}\n")
    rules_file.write(str(create_rule()))

print(f"Rule '{rule_name}' added successfully.")

#