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Add USB-level device probe to prevent cryptic rtl_fm crashes

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When an external process (or stale handle from a crash) holds an SDR
device, claim_sdr_device() registry check passes but rtl_fm fails with
usb_claim_interface error -6. This adds a quick rtl_test probe inside
claim_sdr_device() so all modes get a clear error message before the
decoder pipeline is launched.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Smittix
2026-02-08 22:24:02 +00:00
parent 1a4af214bf
commit e413f54651
3 changed files with 79 additions and 1 deletions
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4
utils/sdr/__init__.py
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@@ -26,7 +26,7 @@ from __future__ import annotations
from typing import Optional
from .base import CommandBuilder, SDRCapabilities, SDRDevice, SDRType
from .detection import detect_all_devices
from .detection import detect_all_devices, probe_rtlsdr_device
from .rtlsdr import RTLSDRCommandBuilder
from .limesdr import LimeSDRCommandBuilder
from .hackrf import HackRFCommandBuilder
@@ -229,4 +229,6 @@ __all__ = [
'validate_device_index',
'validate_squelch',
'get_capabilities_for_type',
# Device probing
'probe_rtlsdr_device',
]