ACARS (f00b4r0/DragonOS compatibility):
- Use --output json:file (not json:file:-) for stdout
- Use --rtlsdr instead of -r for device selection
- Use -m 256 for 3.2 MS/s sample rate (wider bandwidth for NA freqs)
- Properly detects fork by checking for --output in help
The f00b4r0 fork (used by DragonOS) has different CLI syntax than
TLeconte's original. Key differences:
- TLeconte: -j -r <device>
- f00b4r0: --output json:file -m 256 --rtlsdr <device>
ADS-B stop fix:
- Add Content-Type header to stop fetch request
- Flask's request.json requires application/json content type
- Without this header, stop returns HTTP 415 and dump1090 keeps running
The previous detection logic incorrectly matched '-o' in help text for
version 4.x, causing startup failures. Now properly detects version:
- Version 4.0+: uses -j for JSON stdout
- Version 3.x: uses -o 4 for JSON stdout
Parses version from acarsdec output (e.g., "Acarsdec v4.3.1" or
"Acarsdec/acarsserv 3.7") to determine the correct flag.
Fixes: "invalid option -- 'o'" error on modern acarsdec builds
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
The get_acarsdec_json_flag() function was defaulting to the obsolete '-o'
flag when detection failed, causing "invalid option -- 'o'" errors with
modern acarsdec builds from TLeconte repository.
Changes:
- Try both -h and --help flags for better compatibility
- Improve -j flag detection patterns
- Default to -j (modern standard) instead of -o
- Only use -o if explicitly documented in help text
This fixes ACARS decoder startup failures on systems where acarsdec was
built from source using setup.sh.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Fix emergency alerts triggering for non-emergency squawk codes (VFR 1200/7000, etc.)
by checking squawkInfo.type === 'emergency' before alerting
- Fix emergency filter to only show actual emergency squawk codes
- Add acarsdec version detection to support both -j (newer) and -o 4 (older) JSON flags
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Use -j instead of -o 4 for JSON output, which is the correct
flag for acarsdec v4.3.1+ (Thibaut Varene fork).
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Restore APRS dynamic device selection and status bar
- Add ACARS status indicator with listening/receiving states
- Fix acars.py: use -o 4 for JSON, correct command order, add macOS pty fix
- Unify all start buttons (green) and stop buttons (red) across app
- Update help documentation with all modes (APRS, ACARS, Listening Post, TSCM)
- Add TSCM Alpha badge to sidebar
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add routes/acars.py with start/stop/stream endpoints for ACARS decoding
- Build acarsdec from source in Dockerfile (not available in Debian slim)
- Add acarsdec installation script to setup.sh for native installs
- Add ACARS to dependency checker in utils/dependencies.py
- Add collapsible ACARS sidebar next to map in aircraft tracking tab
- Add collapsible ACARS panel in ADS-B dashboard with same layout
- Include guidance about needing two SDRs for simultaneous ADS-B + ACARS
- Support regional frequency presets (N.America, Europe, Asia-Pacific)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
