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2 Commits

Author SHA1 Message Date
Robert McMahon 74eb6cb553 Fix telemetry: snprintf truncation, open/write for SD, append NDJSON, capture LED 
- mcs_telemetry: fix snprintf truncation in to_json (advance offset by actual
  bytes written, reserve tail for closing brackets)
- sd_card: use open/write/close instead of fwrite to bypass stdio buffering
- wifi_controller: append telemetry as NDJSON (one object per line)
- status_led: blink blue only when frames captured in monitor mode

Co-authored-by: Cursor <cursoragent@cursor.com>
 2026-02-07 21:39:57 -08:00
Robert McMahon 1eb04acd25 Add HTTP/serial file transfer, broadcast beacon, SD telemetry 
- HTTP server on port 8080: GET /sdcard/<path> for SD file download
- Serial: sdcard send <file> streams hex-encoded; tools/sdcard_recv.py receives
- Broadcast beacon (UDP 5555): advertise IP, MAC, fiwi-telemetry for discovery
- tools/beacon_listen.py: listen and optionally download fiwi-telemetry per device
- SD commands: list, send, delete; status shows fiwi-telemetry and telemetry-status
- Monitor start: MCS telemetry -> fiwi-telemetry on SD by default (every 10s)
- telemetry-status on SD: persist download stats across reboots
- Kconfig: BEACON_INTERVAL_SEC, TELEMETRY_AUTO_DELETE_AFTER_DOWNLOAD

Co-authored-by: Cursor <cursoragent@cursor.com>
 2026-02-07 12:30:04 -08:00