mirror of
https://github.com/smittix/intercept.git
synced 2026-04-24 06:40:00 -07:00
351e478dd8
- Remove Iridium satellite decoding feature (was placeholder/demo only) - Delete routes/iridium.py - Remove Iridium UI elements from index.html - Remove Iridium CSS styles - Remove Iridium dependencies and logger - Clean up SDR docstrings mentioning Iridium - Add version number display (fixes #31) - Add VERSION constant to config.py - Add --version / -V CLI flag to intercept.py - Display version badge in web UI header
124 lines
3.2 KiB
Python
124 lines
3.2 KiB
Python
"""
|
|
RTL-SDR command builder implementation.
|
|
|
|
Uses native rtl_* tools (rtl_fm, rtl_433) and dump1090 for maximum compatibility
|
|
with existing RTL-SDR installations. No SoapySDR dependency required.
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
from typing import Optional
|
|
|
|
from .base import CommandBuilder, SDRCapabilities, SDRDevice, SDRType
|
|
|
|
|
|
class RTLSDRCommandBuilder(CommandBuilder):
|
|
"""RTL-SDR command builder using native rtl_* tools."""
|
|
|
|
CAPABILITIES = SDRCapabilities(
|
|
sdr_type=SDRType.RTL_SDR,
|
|
freq_min_mhz=24.0,
|
|
freq_max_mhz=1766.0,
|
|
gain_min=0.0,
|
|
gain_max=49.6,
|
|
sample_rates=[250000, 1024000, 1800000, 2048000, 2400000],
|
|
supports_bias_t=True,
|
|
supports_ppm=True,
|
|
tx_capable=False
|
|
)
|
|
|
|
def build_fm_demod_command(
|
|
self,
|
|
device: SDRDevice,
|
|
frequency_mhz: float,
|
|
sample_rate: int = 22050,
|
|
gain: Optional[float] = None,
|
|
ppm: Optional[int] = None,
|
|
modulation: str = "fm",
|
|
squelch: Optional[int] = None
|
|
) -> list[str]:
|
|
"""
|
|
Build rtl_fm command for FM demodulation.
|
|
|
|
Used for pager decoding.
|
|
"""
|
|
cmd = [
|
|
'rtl_fm',
|
|
'-d', str(device.index),
|
|
'-f', f'{frequency_mhz}M',
|
|
'-M', modulation,
|
|
'-s', str(sample_rate),
|
|
]
|
|
|
|
if gain is not None and gain > 0:
|
|
cmd.extend(['-g', str(gain)])
|
|
|
|
if ppm is not None and ppm != 0:
|
|
cmd.extend(['-p', str(ppm)])
|
|
|
|
if squelch is not None and squelch > 0:
|
|
cmd.extend(['-l', str(squelch)])
|
|
|
|
# Output to stdout for piping
|
|
cmd.append('-')
|
|
|
|
return cmd
|
|
|
|
def build_adsb_command(
|
|
self,
|
|
device: SDRDevice,
|
|
gain: Optional[float] = None
|
|
) -> list[str]:
|
|
"""
|
|
Build dump1090 command for ADS-B decoding.
|
|
|
|
Uses dump1090 with network output for SBS data streaming.
|
|
"""
|
|
cmd = [
|
|
'dump1090',
|
|
'--net',
|
|
'--device-index', str(device.index),
|
|
'--quiet'
|
|
]
|
|
|
|
if gain is not None:
|
|
cmd.extend(['--gain', str(int(gain))])
|
|
|
|
return cmd
|
|
|
|
def build_ism_command(
|
|
self,
|
|
device: SDRDevice,
|
|
frequency_mhz: float = 433.92,
|
|
gain: Optional[float] = None,
|
|
ppm: Optional[int] = None
|
|
) -> list[str]:
|
|
"""
|
|
Build rtl_433 command for ISM band sensor decoding.
|
|
|
|
Outputs JSON for easy parsing.
|
|
"""
|
|
cmd = [
|
|
'rtl_433',
|
|
'-d', str(device.index),
|
|
'-f', f'{frequency_mhz}M',
|
|
'-F', 'json'
|
|
]
|
|
|
|
if gain is not None and gain > 0:
|
|
cmd.extend(['-g', str(int(gain))])
|
|
|
|
if ppm is not None and ppm != 0:
|
|
cmd.extend(['-p', str(ppm)])
|
|
|
|
return cmd
|
|
|
|
def get_capabilities(self) -> SDRCapabilities:
|
|
"""Return RTL-SDR capabilities."""
|
|
return self.CAPABILITIES
|
|
|
|
@classmethod
|
|
def get_sdr_type(cls) -> SDRType:
|
|
"""Return SDR type."""
|
|
return SDRType.RTL_SDR
|