API built for most common commands

2025-12-24 06:18:42 +00:00
parent 316cfa84f8
commit 60c95e825d
8 changed files with 1172 additions and 38 deletions
--- a/API.md
+++ b/API.md
@@ -0,0 +1,406 @@
+# SLMM API Documentation
+
+REST API for controlling Rion NL-43/NL-53 Sound Level Meters via TCP and FTP.
+
+Base URL: `http://localhost:8000/api/nl43`
+
+All endpoints require a `unit_id` parameter identifying the device.
+
+## Device Configuration
+
+### Get Device Config
+```
+GET /{unit_id}/config
+```
+Returns the device configuration including host, port, and enabled protocols.
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "data": {
+    "unit_id": "nl43-1",
+    "host": "192.168.1.100",
+    "tcp_port": 2255,
+    "tcp_enabled": true,
+    "ftp_enabled": false,
+    "web_enabled": false
+  }
+}
+```
+
+### Update Device Config
+```
+PUT /{unit_id}/config
+```
+Update device configuration.
+
+**Request Body:**
+```json
+{
+  "host": "192.168.1.100",
+  "tcp_port": 2255,
+  "tcp_enabled": true,
+  "ftp_enabled": false,
+  "ftp_username": "admin",
+  "ftp_password": "password",
+  "web_enabled": false
+}
+```
+
+## Device Status
+
+### Get Cached Status
+```
+GET /{unit_id}/status
+```
+Returns the last cached measurement snapshot from the database.
+
+### Get Live Status
+```
+GET /{unit_id}/live
+```
+Requests fresh DOD (Display On Demand) data from the device and returns current measurements.
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "data": {
+    "unit_id": "nl43-1",
+    "measurement_state": "Measure",
+    "lp": "65.2",
+    "leq": "68.4",
+    "lmax": "82.1",
+    "lmin": "42.3",
+    "lpeak": "89.5",
+    "battery_level": "80",
+    "power_source": "Battery",
+    "sd_remaining_mb": "2048",
+    "sd_free_ratio": "50"
+  }
+}
+```
+
+### Stream Live Data (WebSocket)
+```
+WS /{unit_id}/live
+```
+Opens a WebSocket connection and streams continuous DRD (Display Real-time Data) from the device.
+
+## Measurement Control
+
+### Start Measurement
+```
+POST /{unit_id}/start
+```
+Starts measurement on the device.
+
+### Stop Measurement
+```
+POST /{unit_id}/stop
+```
+Stops measurement on the device.
+
+### Pause Measurement
+```
+POST /{unit_id}/pause
+```
+Pauses the current measurement.
+
+### Resume Measurement
+```
+POST /{unit_id}/resume
+```
+Resumes a paused measurement.
+
+### Reset Measurement
+```
+POST /{unit_id}/reset
+```
+Resets the measurement data.
+
+### Manual Store
+```
+POST /{unit_id}/store
+```
+Manually stores the current measurement data.
+
+## Device Information
+
+### Get Battery Level
+```
+GET /{unit_id}/battery
+```
+Returns the battery level.
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "battery_level": "80"
+}
+```
+
+### Get Clock
+```
+GET /{unit_id}/clock
+```
+Returns the device clock time.
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "clock": "2025/12/24,02:30:15"
+}
+```
+
+### Set Clock
+```
+PUT /{unit_id}/clock
+```
+Sets the device clock time.
+
+**Request Body:**
+```json
+{
+  "datetime": "2025/12/24,02:30:15"
+}
+```
+
+## Measurement Settings
+
+### Get Frequency Weighting
+```
+GET /{unit_id}/frequency-weighting?channel=Main
+```
+Gets the frequency weighting (A, C, or Z) for a channel.
+
+**Query Parameters:**
+- `channel` (optional): Main, Sub1, Sub2, or Sub3 (default: Main)
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "frequency_weighting": "A",
+  "channel": "Main"
+}
+```
+
+### Set Frequency Weighting
+```
+PUT /{unit_id}/frequency-weighting
+```
+Sets the frequency weighting.
+
+**Request Body:**
+```json
+{
+  "weighting": "A",
+  "channel": "Main"
+}
+```
+
+### Get Time Weighting
+```
+GET /{unit_id}/time-weighting?channel=Main
+```
+Gets the time weighting (F, S, or I) for a channel.
+
+**Query Parameters:**
+- `channel` (optional): Main, Sub1, Sub2, or Sub3 (default: Main)
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "time_weighting": "F",
+  "channel": "Main"
+}
+```
+
+### Set Time Weighting
+```
+PUT /{unit_id}/time-weighting
+```
+Sets the time weighting.
+
+**Request Body:**
+```json
+{
+  "weighting": "F",
+  "channel": "Main"
+}
+```
+
+**Values:**
+- `F` - Fast (125ms)
+- `S` - Slow (1s)
+- `I` - Impulse (35ms)
+
+## FTP File Management
+
+### Enable FTP
+```
+POST /{unit_id}/ftp/enable
+```
+Enables FTP server on the device.
+
+**Note:** FTP and TCP are mutually exclusive. Enabling FTP will temporarily disable TCP control.
+
+### Disable FTP
+```
+POST /{unit_id}/ftp/disable
+```
+Disables FTP server on the device.
+
+### Get FTP Status
+```
+GET /{unit_id}/ftp/status
+```
+Checks if FTP is enabled on the device.
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "ftp_status": "On",
+  "ftp_enabled": true
+}
+```
+
+### List Files
+```
+GET /{unit_id}/ftp/files?path=/
+```
+Lists files and directories at the specified path.
+
+**Query Parameters:**
+- `path` (optional): Directory path to list (default: /)
+
+**Response:**
+```json
+{
+  "status": "ok",
+  "path": "/NL43_DATA/",
+  "count": 3,
+  "files": [
+    {
+      "name": "measurement_001.wav",
+      "path": "/NL43_DATA/measurement_001.wav",
+      "size": 102400,
+      "modified": "Dec 24 2025",
+      "is_dir": false
+    },
+    {
+      "name": "folder1",
+      "path": "/NL43_DATA/folder1",
+      "size": 0,
+      "modified": "Dec 23 2025",
+      "is_dir": true
+    }
+  ]
+}
+```
+
+### Download File
+```
+POST /{unit_id}/ftp/download
+```
+Downloads a file from the device via FTP.
+
+**Request Body:**
+```json
+{
+  "remote_path": "/NL43_DATA/measurement_001.wav"
+}
+```
+
+**Response:**
+Returns the file as a binary download with appropriate `Content-Disposition` header.
+
+## Error Responses
+
+All endpoints return standard HTTP status codes:
+
+- `200` - Success
+- `404` - Device config not found
+- `403` - TCP communication is disabled
+- `502` - Failed to communicate with device
+- `504` - Device communication timeout
+- `500` - Internal server error
+
+**Error Response Format:**
+```json
+{
+  "detail": "Error message"
+}
+```
+
+## Common Patterns
+
+### Terra-view Integration Example
+
+```javascript
+// Get live status from all devices
+const devices = ['nl43-1', 'nl43-2', 'nl43-3'];
+const statuses = await Promise.all(
+  devices.map(id =>
+    fetch(`http://localhost:8000/api/nl43/${id}/live`)
+      .then(r => r.json())
+  )
+);
+
+// Start measurement on all devices
+await Promise.all(
+  devices.map(id =>
+    fetch(`http://localhost:8000/api/nl43/${id}/start`, { method: 'POST' })
+  )
+);
+
+// Download latest files from all devices
+for (const device of devices) {
+  // Enable FTP
+  await fetch(`http://localhost:8000/api/nl43/${device}/ftp/enable`, {
+    method: 'POST'
+  });
+
+  // List files
+  const res = await fetch(`http://localhost:8000/api/nl43/${device}/ftp/files?path=/NL43_DATA`);
+  const { files } = await res.json();
+
+  // Download latest file
+  const latestFile = files
+    .filter(f => !f.is_dir)
+    .sort((a, b) => b.modified - a.modified)[0];
+
+  if (latestFile) {
+    const download = await fetch(`http://localhost:8000/api/nl43/${device}/ftp/download`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ remote_path: latestFile.path })
+    });
+
+    const blob = await download.blob();
+    // Process blob...
+  }
+
+  // Disable FTP, re-enable TCP
+  await fetch(`http://localhost:8000/api/nl43/${device}/ftp/disable`, {
+    method: 'POST'
+  });
+}
+```
+
+## Rate Limiting
+
+The NL43 protocol requires ≥1 second between commands to the same device. The API automatically enforces this rate limit.
+
+## Notes
+
+- TCP and FTP protocols are mutually exclusive on the device
+- FTP uses active mode (requires device to connect back to server)
+- WebSocket streaming keeps a persistent connection - limit concurrent streams
+- All measurements are stored in the database for quick access via `/status` endpoint
--- a/app/pycache/routers.cpython-310.pyc
+++ b/app/pycache/routers.cpython-310.pyc
--- a/app/pycache/services.cpython-310.pyc
+++ b/app/pycache/services.cpython-310.pyc
--- a/app/routers.py
+++ b/app/routers.py
@@ -258,6 +258,208 @@ async def manual_store(unit_id: str, db: Session = Depends(get_db)):
        raise HTTPException(status_code=500, detail="Internal server error")


+@router.post("/{unit_id}/pause")
+async def pause_measurement(unit_id: str, db: Session = Depends(get_db)):
+    """Pause the current measurement."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        await client.pause()
+        logger.info(f"Paused measurement on unit {unit_id}")
+        return {"status": "ok", "message": "Measurement paused"}
+    except Exception as e:
+        logger.error(f"Failed to pause measurement on {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.post("/{unit_id}/resume")
+async def resume_measurement(unit_id: str, db: Session = Depends(get_db)):
+    """Resume a paused measurement."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        await client.resume()
+        logger.info(f"Resumed measurement on unit {unit_id}")
+        return {"status": "ok", "message": "Measurement resumed"}
+    except Exception as e:
+        logger.error(f"Failed to resume measurement on {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.post("/{unit_id}/reset")
+async def reset_measurement(unit_id: str, db: Session = Depends(get_db)):
+    """Reset the measurement data."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        await client.reset()
+        logger.info(f"Reset measurement data on unit {unit_id}")
+        return {"status": "ok", "message": "Measurement data reset"}
+    except Exception as e:
+        logger.error(f"Failed to reset measurement on {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.get("/{unit_id}/battery")
+async def get_battery(unit_id: str, db: Session = Depends(get_db)):
+    """Get battery level."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        level = await client.get_battery_level()
+        return {"status": "ok", "battery_level": level}
+    except Exception as e:
+        logger.error(f"Failed to get battery level for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.get("/{unit_id}/clock")
+async def get_clock(unit_id: str, db: Session = Depends(get_db)):
+    """Get device clock time."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        clock = await client.get_clock()
+        return {"status": "ok", "clock": clock}
+    except Exception as e:
+        logger.error(f"Failed to get clock for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+class ClockPayload(BaseModel):
+    datetime: str  # Format: YYYY/MM/DD,HH:MM:SS
+
+
+@router.put("/{unit_id}/clock")
+async def set_clock(unit_id: str, payload: ClockPayload, db: Session = Depends(get_db)):
+    """Set device clock time."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        await client.set_clock(payload.datetime)
+        return {"status": "ok", "message": f"Clock set to {payload.datetime}"}
+    except Exception as e:
+        logger.error(f"Failed to set clock for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+class WeightingPayload(BaseModel):
+    weighting: str
+    channel: str = "Main"
+
+
+@router.get("/{unit_id}/frequency-weighting")
+async def get_frequency_weighting(unit_id: str, channel: str = "Main", db: Session = Depends(get_db)):
+    """Get frequency weighting (A, C, Z)."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        weighting = await client.get_frequency_weighting(channel)
+        return {"status": "ok", "frequency_weighting": weighting, "channel": channel}
+    except Exception as e:
+        logger.error(f"Failed to get frequency weighting for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.put("/{unit_id}/frequency-weighting")
+async def set_frequency_weighting(unit_id: str, payload: WeightingPayload, db: Session = Depends(get_db)):
+    """Set frequency weighting (A, C, Z)."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        await client.set_frequency_weighting(payload.weighting, payload.channel)
+        return {"status": "ok", "message": f"Frequency weighting set to {payload.weighting} on {payload.channel}"}
+    except Exception as e:
+        logger.error(f"Failed to set frequency weighting for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.get("/{unit_id}/time-weighting")
+async def get_time_weighting(unit_id: str, channel: str = "Main", db: Session = Depends(get_db)):
+    """Get time weighting (F, S, I)."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        weighting = await client.get_time_weighting(channel)
+        return {"status": "ok", "time_weighting": weighting, "channel": channel}
+    except Exception as e:
+        logger.error(f"Failed to get time weighting for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
+@router.put("/{unit_id}/time-weighting")
+async def set_time_weighting(unit_id: str, payload: WeightingPayload, db: Session = Depends(get_db)):
+    """Set time weighting (F, S, I)."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        await client.set_time_weighting(payload.weighting, payload.channel)
+        return {"status": "ok", "message": f"Time weighting set to {payload.weighting} on {payload.channel}"}
+    except Exception as e:
+        logger.error(f"Failed to set time weighting for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail=str(e))
+
+
@router.get("/{unit_id}/live")
 async def live_status(unit_id: str, db: Session = Depends(get_db)):
    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
@@ -292,6 +494,33 @@ async def live_status(unit_id: str, db: Session = Depends(get_db)):
        raise HTTPException(status_code=500, detail="Internal server error")


+@router.get("/{unit_id}/results")
+async def get_results(unit_id: str, db: Session = Depends(get_db)):
+    """Get final calculation results (DLC) from the last measurement."""
+    cfg = db.query(NL43Config).filter_by(unit_id=unit_id).first()
+    if not cfg:
+        raise HTTPException(status_code=404, detail="NL43 config not found")
+
+    if not cfg.tcp_enabled:
+        raise HTTPException(status_code=403, detail="TCP communication is disabled for this device")
+
+    client = NL43Client(cfg.host, cfg.tcp_port, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
+    try:
+        results = await client.request_dlc()
+        logger.info(f"Retrieved measurement results for unit {unit_id}")
+        return {"status": "ok", "data": results}
+
+    except ConnectionError as e:
+        logger.error(f"Failed to get results for {unit_id}: {e}")
+        raise HTTPException(status_code=502, detail="Failed to communicate with device")
+    except TimeoutError:
+        logger.error(f"Timeout getting results for {unit_id}")
+        raise HTTPException(status_code=504, detail="Device communication timeout")
+    except Exception as e:
+        logger.error(f"Unexpected error getting results for {unit_id}: {e}")
+        raise HTTPException(status_code=500, detail="Internal server error")
+
+
@router.websocket("/{unit_id}/stream")
 async def stream_live(websocket: WebSocket, unit_id: str):
    """WebSocket endpoint for real-time DRD streaming from NL43 device.
--- a/app/services.py
+++ b/app/services.py
@@ -13,7 +13,8 @@ from dataclasses import dataclass
 from datetime import datetime
 from typing import Optional, List
 from sqlalchemy.orm import Session
-import aioftp
+from ftplib import FTP
+from pathlib import Path

 from app.models import NL43Status

@@ -237,6 +238,102 @@ class NL43Client:
        await self._send_command("Manual Store,Start\r\n")
        logger.info(f"Manual store executed on {self.device_key}")

+    async def pause(self):
+        """Pause the current measurement."""
+        await self._send_command("Pause,On\r\n")
+        logger.info(f"Measurement paused on {self.device_key}")
+
+    async def resume(self):
+        """Resume a paused measurement."""
+        await self._send_command("Pause,Off\r\n")
+        logger.info(f"Measurement resumed on {self.device_key}")
+
+    async def reset(self):
+        """Reset the measurement data."""
+        await self._send_command("Reset\r\n")
+        logger.info(f"Measurement data reset on {self.device_key}")
+
+    async def get_battery_level(self) -> str:
+        """Get the battery level."""
+        resp = await self._send_command("Battery Level?\r\n")
+        logger.info(f"Battery level on {self.device_key}: {resp}")
+        return resp.strip()
+
+    async def get_clock(self) -> str:
+        """Get the device clock time."""
+        resp = await self._send_command("Clock?\r\n")
+        logger.info(f"Clock on {self.device_key}: {resp}")
+        return resp.strip()
+
+    async def set_clock(self, datetime_str: str):
+        """Set the device clock time.
+
+        Args:
+            datetime_str: Time in format YYYY/MM/DD,HH:MM:SS
+        """
+        await self._send_command(f"Clock,{datetime_str}\r\n")
+        logger.info(f"Clock set on {self.device_key} to {datetime_str}")
+
+    async def get_frequency_weighting(self, channel: str = "Main") -> str:
+        """Get frequency weighting (A, C, Z, etc.).
+
+        Args:
+            channel: Main, Sub1, Sub2, or Sub3
+        """
+        resp = await self._send_command(f"Frequency Weighting ({channel})?\r\n")
+        logger.info(f"Frequency weighting ({channel}) on {self.device_key}: {resp}")
+        return resp.strip()
+
+    async def set_frequency_weighting(self, weighting: str, channel: str = "Main"):
+        """Set frequency weighting.
+
+        Args:
+            weighting: A, C, or Z
+            channel: Main, Sub1, Sub2, or Sub3
+        """
+        await self._send_command(f"Frequency Weighting ({channel}),{weighting}\r\n")
+        logger.info(f"Frequency weighting ({channel}) set to {weighting} on {self.device_key}")
+
+    async def get_time_weighting(self, channel: str = "Main") -> str:
+        """Get time weighting (F, S, I).
+
+        Args:
+            channel: Main, Sub1, Sub2, or Sub3
+        """
+        resp = await self._send_command(f"Time Weighting ({channel})?\r\n")
+        logger.info(f"Time weighting ({channel}) on {self.device_key}: {resp}")
+        return resp.strip()
+
+    async def set_time_weighting(self, weighting: str, channel: str = "Main"):
+        """Set time weighting.
+
+        Args:
+            weighting: F (Fast), S (Slow), or I (Impulse)
+            channel: Main, Sub1, Sub2, or Sub3
+        """
+        await self._send_command(f"Time Weighting ({channel}),{weighting}\r\n")
+        logger.info(f"Time weighting ({channel}) set to {weighting} on {self.device_key}")
+
+    async def request_dlc(self) -> dict:
+        """Request DLC (Data Last Calculation) - final stored measurement results.
+
+        This retrieves the complete calculation results from the last/current measurement,
+        including all statistical data. Similar to DOD but for final results.
+
+        Returns:
+            Dict with parsed DLC data
+        """
+        resp = await self._send_command("DLC?\r\n")
+        logger.info(f"DLC data received from {self.device_key}: {resp[:100]}...")
+
+        # Parse DLC response - similar format to DOD
+        # The exact format depends on device configuration
+        # For now, return raw data - can be enhanced based on actual response format
+        return {
+            "raw_data": resp.strip(),
+            "device_key": self.device_key,
+        }
+
    async def stream_drd(self, callback):
        """Stream continuous DRD output from the device.

@@ -380,23 +477,45 @@ class NL43Client:
        """
        logger.info(f"Listing FTP files on {self.device_key} at {remote_path}")

-        try:
-            # FTP uses standard port 21, not the TCP control port
-            async with aioftp.Client.context(
-                self.host,
-                port=21,
-                user=self.ftp_username,
-                password=self.ftp_password,
-                socket_timeout=10
-            ) as client:
+        def _list_ftp_sync():
+            """Synchronous FTP listing using ftplib (supports active mode)."""
+            ftp = FTP()
+            ftp.set_debuglevel(0)
+            try:
+                # Connect and login
+                ftp.connect(self.host, 21, timeout=10)
+                ftp.login(self.ftp_username, self.ftp_password)
+                ftp.set_pasv(False)  # Force active mode
+
+                # Change to target directory
+                if remote_path != "/":
+                    ftp.cwd(remote_path)
+
+                # Get directory listing with details
                files = []
-                async for path, info in client.list(remote_path):
+                lines = []
+                ftp.retrlines('LIST', lines.append)
+
+                for line in lines:
+                    # Parse Unix-style ls output
+                    parts = line.split(None, 8)
+                    if len(parts) < 9:
+                        continue
+
+                    is_dir = parts[0].startswith('d')
+                    size = int(parts[4]) if not is_dir else 0
+                    name = parts[8]
+
+                    # Skip . and ..
+                    if name in ('.', '..'):
+                        continue
+
                    file_info = {
-                        "name": path.name,
-                        "path": str(path),
-                        "size": info.get("size", 0),
-                        "modified": info.get("modify", ""),
-                        "is_dir": info["type"] == "dir",
+                        "name": name,
+                        "path": f"{remote_path.rstrip('/')}/{name}",
+                        "size": size,
+                        "modified": f"{parts[5]} {parts[6]} {parts[7]}",
+                        "is_dir": is_dir,
                    }
                    files.append(file_info)
                    logger.debug(f"Found file: {file_info}")
@@ -404,6 +523,15 @@ class NL43Client:
                logger.info(f"Found {len(files)} files/directories on {self.device_key}")
                return files

+            finally:
+                try:
+                    ftp.quit()
+                except:
+                    pass
+
+        try:
+            # Run synchronous FTP in thread pool
+            return await asyncio.to_thread(_list_ftp_sync)
        except Exception as e:
            logger.error(f"Failed to list FTP files on {self.device_key}: {e}")
            raise ConnectionError(f"FTP connection failed: {str(e)}")
@@ -417,18 +545,31 @@ class NL43Client:
        """
        logger.info(f"Downloading {remote_path} from {self.device_key} to {local_path}")

-        try:
-            # FTP uses standard port 21, not the TCP control port
-            async with aioftp.Client.context(
-                self.host,
-                port=21,
-                user=self.ftp_username,
-                password=self.ftp_password,
-                socket_timeout=10
-            ) as client:
-                await client.download(remote_path, local_path, write_into=True)
+        def _download_ftp_sync():
+            """Synchronous FTP download using ftplib (supports active mode)."""
+            ftp = FTP()
+            ftp.set_debuglevel(0)
+            try:
+                # Connect and login
+                ftp.connect(self.host, 21, timeout=10)
+                ftp.login(self.ftp_username, self.ftp_password)
+                ftp.set_pasv(False)  # Force active mode
+
+                # Download file
+                with open(local_path, 'wb') as f:
+                    ftp.retrbinary(f'RETR {remote_path}', f.write)
+
                logger.info(f"Successfully downloaded {remote_path} to {local_path}")

+            finally:
+                try:
+                    ftp.quit()
+                except:
+                    pass
+
+        try:
+            # Run synchronous FTP in thread pool
+            await asyncio.to_thread(_download_ftp_sync)
        except Exception as e:
            logger.error(f"Failed to download {remote_path} from {self.device_key}: {e}")
            raise ConnectionError(f"FTP download failed: {str(e)}")
--- a/data/slmm.db
+++ b/data/slmm.db
--- a/data/slmm.log
+++ b/data/slmm.log
@@ -379,3 +379,149 @@
 2025-12-24 02:02:08,074 - app.main - INFO - CORS allowed origins: ['*']
 2025-12-24 02:02:13,115 - app.main - INFO - Database tables initialized
 2025-12-24 02:02:13,115 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:03:20,909 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:03:21,218 - app.services - ERROR - Failed to list FTP files on 63.45.161.30:2255: Waiting for ('230', '33x') but got 530 [' Login Fail']
+2025-12-24 02:03:21,218 - app.routers - ERROR - Failed to list FTP files on nl43-1: FTP connection failed: Waiting for ('230', '33x') but got 530 [' Login Fail']
+2025-12-24 02:03:26,148 - app.main - INFO - Database tables initialized
+2025-12-24 02:03:26,149 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:04:55,026 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:04:55,339 - app.services - ERROR - Failed to list FTP files on 63.45.161.30:2255: Waiting for ('230', '33x') but got 530 [' Login Fail']
+2025-12-24 02:04:55,339 - app.routers - ERROR - Failed to list FTP files on nl43-1: FTP connection failed: Waiting for ('230', '33x') but got 530 [' Login Fail']
+2025-12-24 02:12:30,900 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:12:31,978 - app.services - ERROR - Failed to list FTP files on 63.45.161.30:2255: Waiting for ('227',) but got 502 [' Not Implemented']
+2025-12-24 02:12:31,978 - app.routers - ERROR - Failed to list FTP files on nl43-1: FTP connection failed: Waiting for ('227',) but got 502 [' Not Implemented']
+2025-12-24 02:12:42,647 - app.services - INFO - Sending command to 63.45.161.30:2255: FTP,On
+2025-12-24 02:12:42,819 - app.services - INFO - FTP enabled on 63.45.161.30:2255
+2025-12-24 02:12:42,819 - app.routers - INFO - Enabled FTP on unit nl43-1
+2025-12-24 02:12:46,890 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:12:47,779 - app.services - ERROR - Failed to list FTP files on 63.45.161.30:2255: Waiting for ('227',) but got 502 [' Not Implemented']
+2025-12-24 02:12:47,779 - app.routers - ERROR - Failed to list FTP files on nl43-1: FTP connection failed: Waiting for ('227',) but got 502 [' Not Implemented']
+2025-12-24 02:14:28,289 - app.main - INFO - Database tables initialized
+2025-12-24 02:14:28,289 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:14:29,306 - app.main - INFO - Database tables initialized
+2025-12-24 02:14:29,306 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:14:58,933 - app.services - INFO - Sending command to 63.45.161.30:2255: FTP,On
+2025-12-24 02:14:59,099 - app.services - INFO - FTP enabled on 63.45.161.30:2255
+2025-12-24 02:14:59,099 - app.routers - INFO - Enabled FTP on unit nl43-1
+2025-12-24 02:14:59,921 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:15:00,339 - app.services - ERROR - Failed to list FTP files on 63.45.161.30:2255: No passive commands provided
+2025-12-24 02:15:00,339 - app.routers - ERROR - Failed to list FTP files on nl43-1: FTP connection failed: No passive commands provided
+2025-12-24 02:15:32,844 - app.main - INFO - Database tables initialized
+2025-12-24 02:15:32,844 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:15:34,474 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:15:34,859 - app.services - ERROR - Failed to list FTP files on 63.45.161.30:2255: No passive commands provided
+2025-12-24 02:15:34,859 - app.routers - ERROR - Failed to list FTP files on nl43-1: FTP connection failed: No passive commands provided
+2025-12-24 02:16:31,671 - app.main - INFO - Database tables initialized
+2025-12-24 02:16:31,671 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:17:13,560 - app.main - INFO - Database tables initialized
+2025-12-24 02:17:13,560 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:17:29,976 - app.main - INFO - Database tables initialized
+2025-12-24 02:17:29,976 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:30:23,927 - app.main - INFO - Database tables initialized
+2025-12-24 02:30:23,928 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:30:43,933 - app.routers - INFO - WebSocket connection accepted for unit nl43-1
+2025-12-24 02:30:43,934 - app.routers - INFO - Starting DRD stream for unit nl43-1
+2025-12-24 02:30:43,934 - app.services - INFO - Starting DRD stream for 63.45.161.30:2255
+2025-12-24 02:30:44,099 - app.services - INFO - DRD stream started successfully for 63.45.161.30:2255
+2025-12-24 02:30:47,915 - app.routers - ERROR - Failed to send snapshot via WebSocket: received 1005 (no status received [internal]); then sent 1005 (no status received [internal])
+2025-12-24 02:30:47,916 - app.services - INFO - DRD stream ended for 63.45.161.30:2255
+2025-12-24 02:30:47,916 - app.routers - ERROR - Unexpected error in WebSocket stream for nl43-1: received 1005 (no status received [internal]); then sent 1005 (no status received [internal])
+2025-12-24 02:30:47,916 - app.routers - INFO - WebSocket stream closed for unit nl43-1
+2025-12-24 02:30:50,949 - app.services - INFO - Sending command to 63.45.161.30:2255: DOD?
+2025-12-24 02:30:51,149 - app.services - INFO - Parsed 64 data points from DOD response
+2025-12-24 02:30:51,159 - app.routers - INFO - Retrieved live status for unit nl43-1
+2025-12-24 02:30:54,330 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:30:55,059 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:31:12,298 - app.services - INFO - Downloading /NIKON001.DSC from 63.45.161.30:2255 to data/downloads/nl43-1/NIKON001.DSC
+2025-12-24 02:31:13,140 - app.services - INFO - Successfully downloaded /NIKON001.DSC to data/downloads/nl43-1/NIKON001.DSC
+2025-12-24 02:31:13,220 - app.routers - INFO - Downloaded /NIKON001.DSC from nl43-1 to data/downloads/nl43-1/NIKON001.DSC
+2025-12-24 02:34:49,457 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:34:50,419 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:34:52,824 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43
+2025-12-24 02:34:53,709 - app.services - INFO - Found 8 files/directories on 63.45.161.30:2255
+2025-12-24 02:35:00,136 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Screenshot
+2025-12-24 02:35:00,942 - app.services - INFO - Found 1 files/directories on 63.45.161.30:2255
+2025-12-24 02:35:03,332 - app.services - INFO - Downloading /NL-43/Screenshot/0001_20251223_193950.bmp from 63.45.161.30:2255 to data/downloads/nl43-1/0001_20251223_193950.bmp
+2025-12-24 02:35:04,939 - app.services - INFO - Successfully downloaded /NL-43/Screenshot/0001_20251223_193950.bmp to data/downloads/nl43-1/0001_20251223_193950.bmp
+2025-12-24 02:35:05,019 - app.routers - INFO - Downloaded /NL-43/Screenshot/0001_20251223_193950.bmp from nl43-1 to data/downloads/nl43-1/0001_20251223_193950.bmp
+2025-12-24 02:35:20,669 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/
+2025-12-24 02:35:21,539 - app.services - INFO - Found 8 files/directories on 63.45.161.30:2255
+2025-12-24 02:35:24,452 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Auto_0019
+2025-12-24 02:35:25,339 - app.services - INFO - Found 3 files/directories on 63.45.161.30:2255
+2025-12-24 02:35:30,134 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Auto_0019/Auto_Lp_01
+2025-12-24 02:35:30,939 - app.services - INFO - Found 1 files/directories on 63.45.161.30:2255
+2025-12-24 02:35:34,225 - app.services - INFO - Downloading /NL-43/Auto_0019/Auto_Lp_01/NL_0001_SLM_Lp _0019_0001.rnd from 63.45.161.30:2255 to data/downloads/nl43-1/NL_0001_SLM_Lp _0019_0001.rnd
+2025-12-24 02:35:36,139 - app.services - INFO - Successfully downloaded /NL-43/Auto_0019/Auto_Lp_01/NL_0001_SLM_Lp _0019_0001.rnd to data/downloads/nl43-1/NL_0001_SLM_Lp _0019_0001.rnd
+2025-12-24 02:35:36,219 - app.routers - INFO - Downloaded /NL-43/Auto_0019/Auto_Lp_01/NL_0001_SLM_Lp _0019_0001.rnd from nl43-1 to data/downloads/nl43-1/NL_0001_SLM_Lp _0019_0001.rnd
+2025-12-24 02:36:30,080 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:36:30,779 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:36:34,289 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43
+2025-12-24 02:36:35,109 - app.services - INFO - Found 8 files/directories on 63.45.161.30:2255
+2025-12-24 02:36:40,284 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Auto_0019
+2025-12-24 02:36:41,220 - app.services - INFO - Found 3 files/directories on 63.45.161.30:2255
+2025-12-24 02:36:43,370 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Auto_0019/Auto_Lp_01
+2025-12-24 02:36:44,428 - app.services - INFO - Found 1 files/directories on 63.45.161.30:2255
+2025-12-24 02:36:46,101 - app.services - INFO - Downloading /NL-43/Auto_0019/Auto_Lp_01/NL_0001_SLM_Lp _0019_0001.rnd from 63.45.161.30:2255 to data/downloads/nl43-1/NL_0001_SLM_Lp _0019_0001.rnd
+2025-12-24 02:36:47,380 - app.services - INFO - Successfully downloaded /NL-43/Auto_0019/Auto_Lp_01/NL_0001_SLM_Lp _0019_0001.rnd to data/downloads/nl43-1/NL_0001_SLM_Lp _0019_0001.rnd
+2025-12-24 02:36:47,476 - app.routers - INFO - Downloaded /NL-43/Auto_0019/Auto_Lp_01/NL_0001_SLM_Lp _0019_0001.rnd from nl43-1 to data/downloads/nl43-1/NL_0001_SLM_Lp _0019_0001.rnd
+2025-12-24 02:37:18,786 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Auto_0019/
+2025-12-24 02:37:19,580 - app.services - INFO - Found 3 files/directories on 63.45.161.30:2255
+2025-12-24 02:37:25,812 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/
+2025-12-24 02:37:26,619 - app.services - INFO - Found 8 files/directories on 63.45.161.30:2255
+2025-12-24 02:37:28,988 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/Manual_0019
+2025-12-24 02:37:29,859 - app.services - INFO - Found 1 files/directories on 63.45.161.30:2255
+2025-12-24 02:37:31,775 - app.services - INFO - Downloading /NL-43/Manual_0019/NL_0001_SLM_MAN_0019_0000.rnd from 63.45.161.30:2255 to data/downloads/nl43-1/NL_0001_SLM_MAN_0019_0000.rnd
+2025-12-24 02:37:32,659 - app.services - INFO - Successfully downloaded /NL-43/Manual_0019/NL_0001_SLM_MAN_0019_0000.rnd to data/downloads/nl43-1/NL_0001_SLM_MAN_0019_0000.rnd
+2025-12-24 02:37:32,739 - app.routers - INFO - Downloaded /NL-43/Manual_0019/NL_0001_SLM_MAN_0019_0000.rnd from nl43-1 to data/downloads/nl43-1/NL_0001_SLM_MAN_0019_0000.rnd
+2025-12-24 02:38:02,603 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:38:03,379 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:38:19,338 - app.services - INFO - Sending command to 63.45.161.30:2255: FTP,On
+2025-12-24 02:38:19,499 - app.services - INFO - FTP enabled on 63.45.161.30:2255
+2025-12-24 02:38:19,499 - app.routers - INFO - Enabled FTP on unit nl43-1
+2025-12-24 02:38:20,339 - app.services - INFO - Sending command to 63.45.161.30:2255: FTP,On
+2025-12-24 02:38:20,500 - app.services - INFO - FTP enabled on 63.45.161.30:2255
+2025-12-24 02:38:20,500 - app.routers - INFO - Enabled FTP on unit nl43-1
+2025-12-24 02:38:23,612 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:38:24,339 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:38:31,856 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /NL-43/
+2025-12-24 02:38:32,660 - app.services - INFO - Found 8 files/directories on 63.45.161.30:2255
+2025-12-24 02:38:35,781 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:38:36,500 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:38:39,724 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /DCIM
+2025-12-24 02:38:40,499 - app.services - INFO - Found 0 files/directories on 63.45.161.30:2255
+2025-12-24 02:38:45,065 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 02:38:45,939 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 02:41:25,498 - app.main - INFO - Database tables initialized
+2025-12-24 02:41:25,498 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 02:42:08,371 - app.main - INFO - Database tables initialized
+2025-12-24 02:42:08,372 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 05:44:06,113 - app.main - INFO - Database tables initialized
+2025-12-24 05:44:06,113 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 05:44:19,375 - app.main - INFO - Database tables initialized
+2025-12-24 05:44:19,376 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 06:11:27,237 - app.main - INFO - Database tables initialized
+2025-12-24 06:11:27,237 - app.main - INFO - CORS allowed origins: ['*']
+2025-12-24 06:11:31,752 - app.services - INFO - Sending command to 63.45.161.30:2255: Battery Level?
+2025-12-24 06:11:31,901 - app.services - INFO - Battery level on 63.45.161.30:2255: Full
+2025-12-24 06:11:34,598 - app.services - INFO - Sending command to 63.45.161.30:2255: Clock?
+2025-12-24 06:11:34,742 - app.services - INFO - Clock on 63.45.161.30:2255: 2025/12/24 02:10:55
+2025-12-24 06:11:39,102 - app.services - INFO - Sending command to 63.45.161.30:2255: Clock,2025/12/24,01:11:41
+2025-12-24 06:11:39,262 - app.services - ERROR - Communication error with 63.45.161.30:2255: Parameter error - invalid parameter value
+2025-12-24 06:11:39,262 - app.routers - ERROR - Failed to set clock for nl43-1: Parameter error - invalid parameter value
+2025-12-24 06:12:00,090 - app.services - INFO - Listing FTP files on 63.45.161.30:2255 at /
+2025-12-24 06:12:00,789 - app.services - INFO - Found 4 files/directories on 63.45.161.30:2255
+2025-12-24 06:12:12,263 - app.services - INFO - Sending command to 63.45.161.30:2255: Frequency Weighting (Main)?
+2025-12-24 06:12:12,432 - app.services - INFO - Frequency weighting (Main) on 63.45.161.30:2255: A
+2025-12-24 06:12:23,787 - app.services - INFO - Sending command to 63.45.161.30:2255: Time Weighting (Main)?
+2025-12-24 06:12:23,942 - app.services - INFO - Time weighting (Main) on 63.45.161.30:2255: S
+2025-12-24 06:12:41,070 - app.services - INFO - Sending command to 63.45.161.30:2255: Clock,2025/12/24,01:12:43
+2025-12-24 06:12:41,232 - app.services - ERROR - Communication error with 63.45.161.30:2255: Parameter error - invalid parameter value
+2025-12-24 06:12:41,232 - app.routers - ERROR - Failed to set clock for nl43-1: Parameter error - invalid parameter value
+2025-12-24 06:13:04,056 - app.services - INFO - Sending command to 63.45.161.30:2255: DLC?
+2025-12-24 06:13:04,232 - app.services - INFO - DLC data received from 63.45.161.30:2255: -.-, 43.7, 53.7, 44.1, 43.4, 44.2, 44.2, 43.7, 43.4, 43.3, 59.0,  -.-,  -.-,  -.-,0,0,  -.-,  -.-,  ...
+2025-12-24 06:13:04,232 - app.routers - INFO - Retrieved measurement results for unit nl43-1
+2025-12-24 06:13:29,235 - app.services - INFO - Sending command to 63.45.161.30:2255: Measure,Start
+2025-12-24 06:13:29,422 - app.routers - INFO - Started measurement on unit nl43-1
+2025-12-24 06:13:55,260 - app.services - INFO - Sending command to 63.45.161.30:2255: Clock,2025/12/24,01:13:57
+2025-12-24 06:13:55,422 - app.services - ERROR - Communication error with 63.45.161.30:2255: Parameter error - invalid parameter value
+2025-12-24 06:13:55,422 - app.routers - ERROR - Failed to set clock for nl43-1: Parameter error - invalid parameter value
--- a/templates/index.html
+++ b/templates/index.html
@@ -30,11 +30,40 @@
  </fieldset>

  <fieldset>
-    <legend>Controls</legend>
+    <legend>Measurement Controls</legend>
    <button onclick="start()">Start</button>
    <button onclick="stop()">Stop</button>
+    <button onclick="pause()">Pause</button>
+    <button onclick="resume()">Resume</button>
+    <button onclick="reset()">Reset</button>
    <button onclick="store()">Store Data</button>
-    <button onclick="live()">Fetch Live (DOD?)</button>
+    <button onclick="live()">Fetch Live (DOD)</button>
+    <button onclick="getResults()">Get Results (DLC)</button>
+  </fieldset>
+
+  <fieldset>
+    <legend>Device Info</legend>
+    <button onclick="getBattery()">Get Battery</button>
+    <button onclick="getClock()">Get Clock</button>
+    <button onclick="syncClock()">Sync Clock to PC</button>
+  </fieldset>
+
+  <fieldset>
+    <legend>Measurement Settings</legend>
+    <div style="margin-bottom: 8px;">
+      <label style="display: inline; margin-right: 8px;">Frequency Weighting:</label>
+      <button onclick="getFreqWeighting()">Get</button>
+      <button onclick="setFreqWeighting('A')">Set A</button>
+      <button onclick="setFreqWeighting('C')">Set C</button>
+      <button onclick="setFreqWeighting('Z')">Set Z</button>
+    </div>
+    <div>
+      <label style="display: inline; margin-right: 8px;">Time Weighting:</label>
+      <button onclick="getTimeWeighting()">Get</button>
+      <button onclick="setTimeWeighting('F')">Set Fast</button>
+      <button onclick="setTimeWeighting('S')">Set Slow</button>
+      <button onclick="setTimeWeighting('I')">Set Impulse</button>
+    </div>
  </fieldset>

  <fieldset>
@@ -134,6 +163,134 @@
      log(`Live: ${JSON.stringify(data.data)}`);
    }

+    async function getResults() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/results`);
+      const data = await res.json();
+      if (!res.ok) {
+        log(`Get Results failed: ${res.status} ${JSON.stringify(data)}`);
+        return;
+      }
+      statusEl.textContent = JSON.stringify(data.data, null, 2);
+      log(`Results (DLC): Retrieved final calculation data`);
+    }
+
+    // New measurement control functions
+    async function pause() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/pause`, { method: 'POST' });
+      const data = await res.json();
+      log(`Pause: ${res.status} - ${data.message || JSON.stringify(data)}`);
+    }
+
+    async function resume() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/resume`, { method: 'POST' });
+      const data = await res.json();
+      log(`Resume: ${res.status} - ${data.message || JSON.stringify(data)}`);
+    }
+
+    async function reset() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/reset`, { method: 'POST' });
+      const data = await res.json();
+      log(`Reset: ${res.status} - ${data.message || JSON.stringify(data)}`);
+    }
+
+    // Device info functions
+    async function getBattery() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/battery`);
+      const data = await res.json();
+      if (res.ok) {
+        log(`Battery Level: ${data.battery_level}%`);
+      } else {
+        log(`Get Battery failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
+    async function getClock() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/clock`);
+      const data = await res.json();
+      if (res.ok) {
+        log(`Device Clock: ${data.clock}`);
+      } else {
+        log(`Get Clock failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
+    async function syncClock() {
+      const unitId = document.getElementById('unitId').value;
+      const now = new Date();
+      const datetime = `${now.getFullYear()}/${String(now.getMonth() + 1).padStart(2, '0')}/${String(now.getDate()).padStart(2, '0')},${String(now.getHours()).padStart(2, '0')}:${String(now.getMinutes()).padStart(2, '0')}:${String(now.getSeconds()).padStart(2, '0')}`;
+
+      const res = await fetch(`/api/nl43/${unitId}/clock`, {
+        method: 'PUT',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ datetime })
+      });
+      const data = await res.json();
+      if (res.ok) {
+        log(`Clock synced to: ${datetime}`);
+      } else {
+        log(`Sync Clock failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
+    // Measurement settings functions
+    async function getFreqWeighting() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/frequency-weighting?channel=Main`);
+      const data = await res.json();
+      if (res.ok) {
+        log(`Frequency Weighting (Main): ${data.frequency_weighting}`);
+      } else {
+        log(`Get Freq Weighting failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
+    async function setFreqWeighting(weighting) {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/frequency-weighting`, {
+        method: 'PUT',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ weighting, channel: 'Main' })
+      });
+      const data = await res.json();
+      if (res.ok) {
+        log(`Frequency Weighting set to: ${weighting}`);
+      } else {
+        log(`Set Freq Weighting failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
+    async function getTimeWeighting() {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/time-weighting?channel=Main`);
+      const data = await res.json();
+      if (res.ok) {
+        log(`Time Weighting (Main): ${data.time_weighting}`);
+      } else {
+        log(`Get Time Weighting failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
+    async function setTimeWeighting(weighting) {
+      const unitId = document.getElementById('unitId').value;
+      const res = await fetch(`/api/nl43/${unitId}/time-weighting`, {
+        method: 'PUT',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ weighting, channel: 'Main' })
+      });
+      const data = await res.json();
+      if (res.ok) {
+        log(`Time Weighting set to: ${weighting}`);
+      } else {
+        log(`Set Time Weighting failed: ${res.status} - ${data.detail}`);
+      }
+    }
+
    function toggleStream() {
      if (ws && ws.readyState === WebSocket.OPEN) {
        stopStream();
@@ -239,9 +396,12 @@
      }
    }

-    async function listFiles() {
+    let currentPath = '/';
+
+    async function listFiles(path = '/') {
+      currentPath = path;
      const unitId = document.getElementById('unitId').value;
-      const res = await fetch(`/api/nl43/${unitId}/ftp/files?path=/`);
+      const res = await fetch(`/api/nl43/${unitId}/ftp/files?path=${encodeURIComponent(path)}`);
      const data = await res.json();

      if (!res.ok) {
@@ -252,13 +412,58 @@
      const fileListEl = document.getElementById('fileList');
      fileListEl.innerHTML = '';

+      // Add breadcrumb navigation
+      const breadcrumb = document.createElement('div');
+      breadcrumb.style.marginBottom = '8px';
+      breadcrumb.style.padding = '4px';
+      breadcrumb.style.background = '#e1e4e8';
+      breadcrumb.style.borderRadius = '3px';
+      breadcrumb.innerHTML = '<strong>Path:</strong> ';
+
+      const pathParts = path.split('/').filter(p => p);
+      let builtPath = '/';
+
+      // Root link
+      const rootLink = document.createElement('a');
+      rootLink.href = '#';
+      rootLink.textContent = '/';
+      rootLink.style.marginRight = '4px';
+      rootLink.onclick = (e) => { e.preventDefault(); listFiles('/'); };
+      breadcrumb.appendChild(rootLink);
+
+      // Path component links
+      pathParts.forEach((part, idx) => {
+        builtPath += part + '/';
+        const linkPath = builtPath;
+
+        const separator = document.createElement('span');
+        separator.textContent = ' / ';
+        breadcrumb.appendChild(separator);
+
+        const link = document.createElement('a');
+        link.href = '#';
+        link.textContent = part;
+        link.style.marginRight = '4px';
+        if (idx === pathParts.length - 1) {
+          link.style.fontWeight = 'bold';
+          link.style.color = '#000';
+        }
+        link.onclick = (e) => { e.preventDefault(); listFiles(linkPath); };
+        breadcrumb.appendChild(link);
+      });
+
+      fileListEl.appendChild(breadcrumb);
+
      if (data.files.length === 0) {
-        fileListEl.textContent = 'No files found';
-        log(`No files found on device`);
+        const emptyDiv = document.createElement('div');
+        emptyDiv.textContent = 'No files found';
+        emptyDiv.style.padding = '8px';
+        fileListEl.appendChild(emptyDiv);
+        log(`No files found in ${path}`);
        return;
      }

-      log(`Found ${data.count} files on device`);
+      log(`Found ${data.count} files in ${path}`);

      data.files.forEach(file => {
        const fileDiv = document.createElement('div');
@@ -269,11 +474,18 @@
        const icon = file.is_dir ? '📁' : '📄';
        const size = file.is_dir ? '' : ` (${(file.size / 1024).toFixed(1)} KB)`;

-        fileDiv.innerHTML = `
-          ${icon} <strong>${file.name}</strong>${size}
-          ${!file.is_dir ? `<button onclick="downloadFile('${file.path}')" style="margin-left: 8px; padding: 2px 6px; font-size: 0.9em;">Download</button>` : ''}
-          <br><small style="color: #666;">${file.path}</small>
-        `;
+        if (file.is_dir) {
+          fileDiv.innerHTML = `
+            ${icon} <a href="#" onclick="event.preventDefault(); listFiles('${file.path}');" style="font-weight: bold;">${file.name}</a>
+            <br><small style="color: #666;">${file.path}</small>
+          `;
+        } else {
+          fileDiv.innerHTML = `
+            ${icon} <strong>${file.name}</strong>${size}
+            <button onclick="downloadFile('${file.path}')" style="margin-left: 8px; padding: 2px 6px; font-size: 0.9em;">Download</button>
+            <br><small style="color: #666;">${file.path}</small>
+          `;
+        }

        fileListEl.appendChild(fileDiv);
      });