adcp-recorder 0.1.0

NMEA telemetry recorder for Nortek ADCP instruments with DuckDB backend

ADCP Recorder

ADCP Recorder is a production-ready NMEA telemetry recorder for Nortek ADCP (Acoustic Doppler Current Profiler) instruments with a DuckDB backend. It provides reliable, high-performance data collection with comprehensive parsing, validation, and storage capabilities.

Features

• ✅ Asynchronous Serial Communication - Non-blocking serial port polling with automatic reconnection
• ✅ NMEA Protocol Support - Full checksum validation and frame parsing for 21+ message types
• ✅ DuckDB Persistence - Embedded database with timestamped raw lines and parsed data
• ✅ Graceful Signal Handling - Clean shutdown on SIGTERM/SIGINT
• ✅ Health Monitoring - Built-in health checks with optional webhook alerting
• ✅ Binary Data Detection - Separate error logging for non-NMEA data
• ✅ Daily File Export - Automatic CSV export per message type
• ✅ Cross-Platform - Full support for Linux and Windows
• ✅ Service Integration - Systemd (Linux) and Windows Service support
• ✅ Production Ready - Comprehensive testing, logging, and error handling

Supported NMEA Message Types

Configuration: PNORI, PNORI1, PNORI2
Sensor Data: PNORS, PNORS1, PNORS2, PNORS3, PNORS4
Current Velocity: PNORC, PNORC1, PNORC2, PNORC3, PNORC4
Headers: PNORH3, PNORH4
Additional: PNORA, PNORW, PNORB, PNORE, PNORF, PNORWD

Quick Start

Installation

# Install from PyPI (recommended)
pip install adcp-recorder

# Or install from source
git clone https://github.com/your-org/adcp-recorder.git
cd adcp-recorder
pip install .

Basic Usage

# List available serial ports
adcp-recorder list-ports

# Configure the recorder
adcp-recorder configure --port /dev/ttyUSB0 --baud 9600 --output ~/adcp_data

# Check configuration
adcp-recorder status

# Start recording
adcp-recorder start

Press Ctrl+C to stop the recorder.

Documentation

User Guides

• Installation Guide - Complete installation instructions for Linux and Windows
• Configuration Guide - Detailed configuration options and examples
• Usage Guide - CLI commands, workflows, and best practices
• Examples - Practical examples and common scenarios

Deployment

• Deployment Guide - Production deployment, service setup, and maintenance

Technical Documentation

• Architecture Overview - System design and components
• NMEA Protocol - NMEA sentence format and validation
• Message Specifications - Detailed specs for all message types
• Implementation Guides - Parser patterns and database schemas

Complete Documentation

Browse the full documentation at docs/README.md

System Requirements

• Python: 3.9 or higher
• Operating System: Linux (Ubuntu 20.04+, Debian 11+, RHEL 8+) or Windows 10/11
• RAM: 512 MB minimum, 1 GB recommended
• Disk Space: 100 MB for application, additional space for data storage
• Serial Port: USB-to-serial adapter or native serial port

Installation Methods

Method 1: PyPI (Recommended for Production)

pip install adcp-recorder

Method 2: From Source

git clone https://github.com/your-org/adcp-recorder.git
cd adcp-recorder
pip install .

Method 3: Development Installation

git clone https://github.com/your-org/adcp-recorder.git
cd adcp-recorder
pip install -e ".[dev]"
pytest  # Run tests

Production Deployment

Linux (Systemd Service)

# Automated installation
sudo ./scripts/install-linux.sh

# Or manual installation
sudo cp adcp_recorder/templates/linux/adcp-recorder.service /etc/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable adcp-recorder
sudo systemctl start adcp-recorder

Windows (Windows Service)

REM Automated installation (run as Administrator)
install-windows.bat

REM Or manual service installation
python -m adcp_recorder.service.win_service install
sc config adcp-recorder start= auto
sc start adcp-recorder

See Deployment Guide for complete instructions.

CLI Commands

# List available serial ports
adcp-recorder list-ports

# Configure settings
adcp-recorder configure [OPTIONS]
  --port TEXT          Serial port device
  --baud INTEGER       Baud rate
  --output TEXT        Output directory
  --debug/--no-debug   Enable/disable debug logging

# Show current status
adcp-recorder status

# Start recording
adcp-recorder start

# Generate service templates
adcp-recorder generate-service --platform {linux|windows}

Data Access

Database Queries

# Connect to database
duckdb ~/adcp_data/adcp.duckdb

# Query examples
SELECT COUNT(*) FROM raw_lines;
SELECT * FROM pnors ORDER BY timestamp DESC LIMIT 10;
SELECT AVG(temperature) FROM pnors WHERE temperature IS NOT NULL;

CSV Files

Daily CSV files are automatically exported to {output_dir}/{MESSAGE_TYPE}/{YYYY-MM-DD}.csv

# View today's sensor data
cat ~/adcp_data/PNORS/$(date +%Y-%m-%d).csv

Development

Running Tests

# Install development dependencies
pip install -e ".[dev]"

# Run all tests
pytest

# Run with coverage
pytest --cov=adcp_recorder --cov-report=html

# Run specific test file
pytest adcp_recorder/tests/test_nmea.py

Code Quality

# Linting (using ruff)
ruff check adcp_recorder/

# Type checking
mypy adcp_recorder/

# Code formatting
ruff format adcp_recorder/

Building Distribution

# Build package
./scripts/build.sh

# This will:
# - Run tests
# - Generate coverage reports
# - Build wheel and source distributions
# - Generate checksums

Architecture

┌─────────────────────────────────────────────────────────┐
│                    ADCP Recorder                        │
├─────────────────────────────────────────────────────────┤
│                                                         │
│  Serial Port  →  Producer  →  Queue  →  Consumer       │
│                                           ↓             │
│                                      Message Router     │
│                                           ↓             │
│                                  ┌────────┴────────┐   │
│                                  ↓                 ↓   │
│                            DuckDB Database    CSV Files│
│                                                         │
└─────────────────────────────────────────────────────────┘

See Architecture Overview for details.

Configuration

Configuration is stored in ~/.adcp-recorder/config.json:

{
    "serial_port": "/dev/ttyUSB0",
    "baudrate": 9600,
    "timeout": 1.0,
    "output_dir": "/home/user/adcp_data",
    "log_level": "INFO",
    "db_path": null
}

Environment variables can override configuration:

export ADCP_RECORDER_SERIAL_PORT=/dev/ttyUSB1
export ADCP_RECORDER_BAUDRATE=115200
export ADCP_RECORDER_OUTPUT_DIR=/data/adcp

See Configuration Guide for all options.

Monitoring

Service Status

# Linux
sudo systemctl status adcp-recorder
sudo journalctl -u adcp-recorder -f

# Windows
sc query adcp-recorder
Get-EventLog -LogName Application -Source adcp-recorder -Newest 20

Health Checks

# Check data collection rate
duckdb ~/adcp_data/adcp.duckdb \
  "SELECT COUNT(*) FROM raw_lines WHERE timestamp > NOW() - INTERVAL 5 MINUTES"

# Check for errors
duckdb ~/adcp_data/adcp.duckdb \
  "SELECT * FROM errors ORDER BY timestamp DESC LIMIT 10"

Troubleshooting

Common Issues

Serial port permission denied (Linux):

sudo usermod -a -G dialout $USER
# Log out and log back in

Service won't start:

# Check logs
sudo journalctl -u adcp-recorder -n 50

# Verify configuration
adcp-recorder status

# Test manually
adcp-recorder start

No data being collected:

# Enable debug logging
adcp-recorder configure --debug
adcp-recorder start

# Check serial port
adcp-recorder list-ports

See Usage Guide for more troubleshooting.

Contributing

Contributions are welcome! Please follow these guidelines:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Make your changes
4. Run tests (pytest)
5. Commit your changes (git commit -m 'Add amazing feature')
6. Push to the branch (git push origin feature/amazing-feature)
7. Open a Pull Request

Development Setup

git clone https://github.com/your-org/adcp-recorder.git
cd adcp-recorder
python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate
pip install -e ".[dev]"
pytest

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

• Documentation: docs/README.md
• Issues: GitHub Issues
• Discussions: GitHub Discussions

Acknowledgments

• Nortek for ADCP instruments and NMEA specifications
• DuckDB for the embedded database engine
• The Python community for excellent libraries

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