set_pwm
Adjust PWM frequency from 0 to 100 to control IoT device behavior through MQTT communication.
Instructions
设置PWM频率，范围0-100
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| frequency | Yes | PWM频率值(0-100) |
Implementation Reference
- src/mcp2mqtt/server.py:281-289 (handler)Executes the set_pwm tool: validates frequency argument (0-100), constructs MQTT payload 'PWM {frequency}'.
if name == "set_pwm": frequency = arguments.get("frequency", 0) if not (0 <= frequency <= 100): return [types.TextContent( type="text", text="Error: Frequency must be between 0 and 100" )] message = f"PWM {frequency}" - src/mcp2mqtt/server.py:215-242 (registration)Dynamically lists and registers MCP tools loaded from config.yaml, including set_pwm if configured, with schema derived from config parameters.
@server.list_tools() async def handle_list_tools() -> List[types.Tool]: """List available tools.""" tools = [] for tool_name, tool_config in config.tools.items(): tools.append( types.Tool( name=tool_config.name, description=tool_config.description, inputSchema={ "type": "object", "properties": { param["name"]: { "type": param["type"], "description": param["description"], **({"enum": param["enum"]} if "enum" in param else {}) } for param in tool_config.parameters }, "required": [ param["name"] for param in tool_config.parameters if param.get("required", False) ] } ) ) return tools - src/mcp2mqtt/server.py:224-239 (schema)Constructs JSON schema for tool inputs from configuration parameters (used for set_pwm schema).
inputSchema={ "type": "object", "properties": { param["name"]: { "type": param["type"], "description": param["description"], **({"enum": param["enum"]} if "enum" in param else {}) } for param in tool_config.parameters }, "required": [ param["name"] for param in tool_config.parameters if param.get("required", False) ] }