Logic Analyzer AI MCP

An MCP (Model Context Protocol) server for interfacing with Saleae Logic analyzers. This tool allows AI assistants (like Claude) to control hardware logic analyzers, capture signals, and export data for analysis.

Features

• Device Management: List connected devices, configure sample rates and channels.

• Automation: Start and stop captures programmatically.

• Data Export: Export captures to CSV/binary formats.

• Analysis: Perform basic signal analysis (frequency, duty cycle, analog stats) directly via MCP.

• Logic 2 Integration: Leverages the Saleae Logic 2 automation API for modern device support (Logic 8/16, Pro 8/16).

• Adaptive Configuration: Works with fixed-voltage devices (like Logic 8) by correctly handling threshold settings.

Related MCP server: niscope-mcp

Prerequisites

1. Saleae Logic 2 Software: Must be installed and running.

   • Download Logic 2

2. Enable Automation:

   • Open Logic 2.

   • Go to Preferences > Salese Logic 2 (or "Automation").

   • Enable "Enable scripting socket server".

   • Keep the default port 10430.

Installation

This project uses uv for dependency management, but standard pip works too.

Using uv (Recommended)

1. Clone the repository:

   git clone https://github.com/wegitor/logic-analyzer-ai-mcp.git
   cd logic-analyzer-ai-mcp

2. Create a virtual environment and sync dependencies:

   uv venv
   uv sync

3. (Optional) Install manually if not syncing:

   uv pip install -e .

Usage

Running the MCP Server manually

To run the server and see available tools:

# Activate virtual environment first
.venv\Scripts\activate

# Run the server with Logic 2 automation enabled
python -m src.logic_analyzer_mcp --logic2

Configuration for Claude Desktop

To use this with Claude Desktop, add the following to your config file:

• Windows: %APPDATA%\Claude\claude_desktop_config.json

• Mac: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "saleae_logic": {
      "command": "c:\\path\\to\\logic-analyzer-ai-mcp\\.venv\\Scripts\\python.exe",
      "args": [
        "c:\\path\\to\\logic-analyzer-ai-mcp\\src\\logic_analyzer_mcp.py",
        "--logic2"
      ]
    }
  }
}

Note: Replace c:\\path\\to\\... with the actual absolute path to your project folder.

Available Tools

Once connected, the AI assistant will have access to tools like:

• logic2_reconnect: Connect to the running Saleae software.

• get_available_devices: List connected hardware or simulation devices.

• create_device_config: Set up channels and sample rates.

• capture_and_analyze_digital: One-shot capture + frequency/duty cycle analysis.

• capture_and_analyze_analog: One-shot capture + voltage statistics.

• start_capture / wait_capture / save_capture: Granular control over the capture workflow.

• start_capture_with_trigger: Wait for a digital event (e.g. Rising Edge) before capturing.

• add_protocol_analyzer: Add decoders like Serial, I2C, SPI to the capture.

• export_analyzer_data: Export decoded text data to CSV.

Advanced Usage Examples

Using Digital Triggers

To capture only when a specific event happens:

1. Configure device (create_device_config).

2. Start trigger capture:

   # Example: Wait for Rising Edge on Channel 0, then record 1 second
   start_capture_with_trigger(
       device_config_name="my_config",
       trigger_channel_index=0,
       trigger_type="RISING",
       after_trigger_seconds=1.0
   )

Protocol Decoding (e.g. Serial)

To decode UART/Serial data and export the text:

1. Perform a capture (standard or triggered).

2. Add an analyzer:

   add_protocol_analyzer(
       name="Async Serial",
       label="MySerial",
       settings={
           "Input Channel": 0,
           "Bit Rate": 115200
       }
   )

3. Export the decoded table:

   export_analyzer_data(
       filepath="C:\\temp\\serial_data.csv",
       analyzer_label="MySerial"
   )

Troubleshooting

• "Connection Refused": Ensure Logic 2 is running and the scripting server is enabled on port 10430.

• "Threshold Error": If using Logic 8 (which doesn't support variable thresholds), ensure you don't pass a digital_threshold_volts value (the tool handles this automatically now).

License

MIT