From 91db277a630bff56ea765e5c5dcd3214dc71ea95 Mon Sep 17 00:00:00 2001 From: mikecarper Date: Fri, 23 Oct 2026 01:11:08 -0700 Subject: [PATCH] Record RAK3401 recommended preamble comparison --- ..._radio2_recommended_preamble_2026-10-23.md | 89 ++++ ..._recommended_preamble_2026-10-23.safe.json | 480 ++++++++++++++++++ 2 files changed, 569 insertions(+) create mode 100644 docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.md create mode 100644 docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.safe.json diff --git a/docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.md b/docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.md new file mode 100644 index 000000000..fc1e95a4a --- /dev/null +++ b/docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.md @@ -0,0 +1,89 @@ + +

View this page on MeshCore Docs.

+ + +# RAK3401 recommended-preamble repeat, 23 October 2026 + +Status: **RF measurement complete, delivery FAIL. Debugger capture integrity +also FAILS its original sampling-gap limit.** The firmware's settled +recommendation of **radio1 preamble32 / radio2 preamble200** did not eliminate +the scanner's loss. Both fixed witnesses received all applicable packets. +The [sanitized receipt](rak3401_radio2_recommended_preamble_2026-10-23.safe.json) +records the RF evidence and retains the debugger limitation. + +## Comparison with preamble384 + +| Radio2 preamble | RAK primary / 100 | RAK secondary / 100 | Fixed primary / 100 | Fixed secondary / 100 | +| --- | ---: | ---: | ---: | ---: | +| [384, previous completed run](rak3401_radio2_sf5_bw500_p384_2026-10-23.md) | 97 | 100 | 100 | 100 | +| 200, settled recommendation | 96 | 98 | 100 | 100 | + +Primary remained **917.000 MHz, SF7, BW62.5 kHz, CR5, preamble32**; secondary +remained **918.000 MHz, SF5, BW500 kHz, CR5, RX mode**. Only the explicit +secondary preamble changed, including the matching sender and secondary +witness settings. RAK3401 still ran Full unified Repeater source `adb11e7b`; +Tag sender and T1000-E primary witness ran Companion `08650f64`, and the T096 +secondary witness ran Companion `4773ac42`. No firmware was built or flashed. + +Before any measured transmission, the controller waited for the two-minute +recommendation observation and checked the live response: + +```text +chirps=4.60,328.05; need=32,200; switch=1176us; loop=0us; test=4/4,4/4 ready +``` + +Live effective preambles were `32,200`, with visits `9421,20995` us. The +guarded switch allowance and visits matched the previous completed run. +The controller would abort without transmitting if the settled recommendation +differed from the selected values. + +The Tag sent 200 fresh, unique, 92-byte RAW_CUSTOM payloads in the same seeded +twenty-batch plan: 100 per profile, at 2 dBm. Physical packets were 94 bytes. +The nominal post-TX_DONE gaps remained 0.5-0.9 seconds, extended as needed for +confirmed sender retuning. The RF window lasted **203.294 seconds**. There +were exactly 200 physical direct transmissions, zero floods and no retries +or replacement packets. This was successive traffic from one sender, not +simultaneous transmissions on both profiles. + +## Packet and health evidence + +RAK missed primary **P032, P078, P079 and P087** (global zero-based ordinals +61, 147, 148 and 176), and secondary **S014 and S029** (ordinals 33 and 48). +Every missing packet reached its fixed witness. Both witnesses independently +matched all 100 custom-payload pushes and all 100 corresponding raw-frame +pushes. Each pair of observations counted as one delivery. + +The RAK's physical receive counter advanced by 194, agreeing with its exact raw +packet ledger. There were no log drops, collector errors, framing losses, +duplicates or opposite-profile witness deliveries. All three receivers +transmitted zero packets during the RF window, and all four radios added +zero receive/CRC errors. Historical core masks remained 8/8/0/8 for RAK, +Tag, T1000-E and T096 respectively. RAK soft/hard watchdog counters stayed +0/0; queues were empty and uptimes remained continuous. + +These finite counts show that preamble200 was not an improvement in this +run. One batch per preamble, collected at different times with uncontrolled +ambient RF, does not establish a universal performance ranking or identify +the cause of the six misses. + +## Debugger limitation and restoration + +The same nonhalting read-only SWD plan completed **300.004 seconds and 27,086 +samples**, with exact before/after hardware identity matching. Samples showed +no debug enable, halt, stepping, interrupt masking, reset or lockup. OpenOCD +returned normally. However, one **27.5 ms** midpoint gap between samples 11103 +and 11104 exceeded the frozen **25 ms** acceptance limit. Timestamps remained +monotonic and all sample reads took at most 3 ms. **The integrity failure is +retained, not waived.** The controller therefore did not award an overall pass. + +The sampling gap occurred around 121.7 seconds into RF collection; the six +misses occurred around 35.33, 46.84, 61.38, 150.90, 151.96 and 179.22 seconds. It did +not overlap a missed packet. RF receipt validity comes from independent USB +collectors, witness raw frames and exact physical counters; it does not rely +on uninterrupted debugger sampling. This capture does not qualify CPU sleep: +the active USB data/logging session keeps the repeater awake. + +All four nodes passed settings preservation. Temporary leases were removed, +RAK live radio2 returned to off, original power/logging settings were retained, +and the unchanged gateway service reacquired its radio. Independent offline +analysis confirmed the packet losses and the separate debugger failure. diff --git a/docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.safe.json b/docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.safe.json new file mode 100644 index 000000000..5b04551fd --- /dev/null +++ b/docs/test-results/rak3401_radio2_recommended_preamble_2026-10-23.safe.json @@ -0,0 +1,480 @@ +{ + "schema": 1, + "date": "2026-10-23", + "test": "RAK3401 radio2 SF5 BW500 preamble200 physical receive test", + "passed": false, + "complete": true, + "delivery_passed": false, + "firmware_writes": 0, + "packet_retries": 0, + "physical_packet_bytes": 94, + "application_payload_bytes": 92, + "frequency_profiles": { + "primary": { + "frequency_mhz": 917, + "bandwidth_khz": 62.5, + "sf": 7, + "cr": 5, + "preamble_symbols": 32 + }, + "secondary": { + "frequency_mhz": 918, + "bandwidth_khz": 500, + "sf": 5, + "cr": 5, + "preamble_symbols": 200 + } + }, + "sender_power_dbm": 2, + "traffic_pattern": "20 batches of10; ten batches/profile; seeded pair order; no per-packet interleaving claim", + "transmissions": 200, + "rf_duration_seconds": 203.29404710500057, + "gap_seconds": { + "minimum": 0.5018103990005329, + "maximum": 5.687568758999987 + }, + "evidence": { + "private_report_sha256": "aef755d03f44eef36bc30c1b8821e6d9f91f0d42397aef14a29895f30c81a123", + "controller_sha256": "23589910d2ab173497d24d81e08a196365fa404a1b5e3e9de6f94d726703cf9f", + "debugger_log_sha256": "01c1b00f6980e40df40e96fffccc1fd20230ff77805ebb6db7d5e0207c899cb3" + }, + "nodes": { + "rak": { + "board": "RAK 3401", + "firmware_version": "v1.18.0.1-halo-keymind-cascade-dev-adb11e7b (Build: 23-Oct-2026)", + "power_and_logging": { + "get powersaving": "on", + "get radio.rxps.config": "off,level=0,preamble=0,rx=65625,sleep=60000", + "get usb.logging": "on" + }, + "core_before": { + "battery_mv": 4221, + "uptime_secs": 6459, + "errors": 8, + "queue_len": 0 + }, + "core_after": { + "battery_mv": 4187, + "uptime_secs": 6668, + "errors": 8, + "queue_len": 0 + }, + "packet_deltas": { + "sent": 0, + "sent_direct": 0, + "sent_flood": 0, + "recv": 194, + "recv_errors": 0 + }, + "rf_packet_counters_before": { + "sent": 36, + "sent_direct": 1, + "sent_flood": 35, + "recv": 282, + "recv_errors": 0 + }, + "rf_packet_counters_after": { + "sent": 36, + "sent_direct": 1, + "sent_flood": 35, + "recv": 476, + "recv_errors": 0 + }, + "configured": { + "get tempradio": "917.000,62.500,7,5,32", + "get tempradio2": "918.000,500.000,5,5,rx,200; 0d0h13m (13 min) left; WARN recommended preamble: radio2=200; switch=1176us", + "get radio2.status": "rx; RX=140,142 TX=36,0 switches=42704 errors=0 max=3906us preamble=32,200; test=4/4,4/4 ready budget=1176us; WARN recommended preamble: radio2=200", + "get radio2.scan": "slow=radio; listen_us=9421,20995; preamble=32,200; WARN recommended preamble: radio2=200; switch=1176us", + "get radio2.timing": "chirps=4.60,328.05; need=32,200; switch=1176us; loop=0us; test=4/4,4/4 ready; WARN recommended preamble: radio2=200" + }, + "radio_diagnostics_before_configuration": "state=1(RX), recv=270, sent=24, errors=0, err_flags=8, outbound=no, last_rx=709s ago", + "radio_diagnostics_after": "state=1(RX), recv=476, sent=36, errors=0, err_flags=8, outbound=no, last_rx=5s ago", + "watchdog_before": "soft=0,hard=0", + "watchdog_after": "soft=0,hard=0", + "restoration_passed": true, + "restored_live_radio2_status": "off; RX=236,240 TX=36,0 switches=60216 errors=0 max=3907us preamble=32,32", + "collection": { + "expected": 200, + "received": 194, + "missing_ordinals": [ + 33, + 48, + 61, + 147, + 148, + 176 + ], + "duplicates": 0, + "wrong_profile_ordinals": [], + "drops": [], + "errors": [], + "framing": { + "ports_opened": 0, + "ports_closed": 0, + "request_frames_sent": 0, + "response_frames_received": 0, + "request_bytes_sent": 0, + "response_payload_bytes": 0, + "discarded_prefix_bytes": 0, + "invalid_length_candidates": 0, + "ignored_push_frames": 0 + } + }, + "profile_results": { + "primary": { + "expected": 100, + "received": 96, + "missing_ordinals": [ + 61, + 147, + 148, + 176 + ] + }, + "secondary": { + "expected": 100, + "received": 98, + "missing_ordinals": [ + 33, + 48 + ] + } + } + }, + "sender": { + "board": "RAK WisMesh Tag", + "firmware_version": "v1.18.0.1-halo-keymind-cascade-dev-08650f64 (Build: 20-Oct-2026)", + "power_and_logging": { + "get powersaving": "on", + "get radio.rxps.config": "on,level=8,preamble=16,rx=39657,sleep=15975", + "get usb.logging": "usb.logging off; port: dedicated USB CDC 1, interface 02 (Linux: *-if02; tty/COM name is host-assigned)" + }, + "core_before": { + "battery_mv": 4118, + "uptime_secs": 13007, + "errors": 8, + "queue_len": 0 + }, + "core_after": { + "battery_mv": 4118, + "uptime_secs": 13215, + "errors": 8, + "queue_len": 0 + }, + "packet_deltas": { + "sent": 200, + "sent_direct": 200, + "sent_flood": 0, + "recv": 0, + "recv_errors": 0 + }, + "rf_packet_counters_before": { + "sent": 277, + "sent_direct": 262, + "sent_flood": 15, + "recv": 59, + "recv_errors": 4 + }, + "rf_packet_counters_after": { + "sent": 477, + "sent_direct": 462, + "sent_flood": 15, + "recv": 59, + "recv_errors": 4 + }, + "configured": { + "get tempradio": "TempRadio active: 917.000,62.50,7,5 780s left,preamble=32", + "get tempradio2": "off", + "get radio2.status": "off; RX=58,0 TX=277,0 switches=0 errors=0 max=0us preamble=32,32", + "get radio2.scan": "off", + "get radio2.timing": "off" + }, + "radio_diagnostics_before_configuration": "state=1(RX), recv=43, sent=273, errors=4, err_flags=8, outbound=no, last_rx=968s ago", + "radio_diagnostics_after": "state=1(RX), recv=59, sent=477, errors=4, err_flags=8, outbound=no, last_rx=265s ago", + "watchdog_before": "Unknown command", + "watchdog_after": "Unknown command", + "restoration_passed": true, + "restored_live_radio2_status": "off; RX=58,0 TX=477,0 switches=0 errors=0 max=0us preamble=32,32" + }, + "primary": { + "board": "Seeed Tracker T1000-E", + "firmware_version": "v1.18.0.1-halo-keymind-cascade-dev-08650f64 (Build: 20-Oct-2026)", + "power_and_logging": { + "get powersaving": "off", + "get radio.rxps.config": "off,level=3,preamble=16,rx=44079,sleep=5732", + "get usb.logging": "usb.logging off; port: primary USB serial port (tty/COM name is host-assigned)" + }, + "core_before": { + "battery_mv": 4196, + "uptime_secs": 13442, + "errors": 0, + "queue_len": 0 + }, + "core_after": { + "battery_mv": 4195, + "uptime_secs": 13651, + "errors": 0, + "queue_len": 0 + }, + "packet_deltas": { + "sent": 0, + "sent_direct": 0, + "sent_flood": 0, + "recv": 100, + "recv_errors": 0 + }, + "rf_packet_counters_before": { + "sent": 12, + "sent_direct": 0, + "sent_flood": 12, + "recv": 6416, + "recv_errors": 298 + }, + "rf_packet_counters_after": { + "sent": 12, + "sent_direct": 0, + "sent_flood": 12, + "recv": 6516, + "recv_errors": 298 + }, + "configured": { + "get tempradio": "TempRadio active: 917.000,62.50,7,5 781s left,preamble=32", + "get tempradio2": "off", + "get radio2.status": "off; RX=6406,0 TX=12,0 switches=0 errors=0 max=0us preamble=32,32", + "get radio2.scan": "off", + "get radio2.timing": "off" + }, + "radio_diagnostics_before_configuration": "state=1(RX), recv=6400, sent=8, errors=298, err_flags=0, outbound=no, last_rx=1s ago", + "radio_diagnostics_after": "state=1(RX), recv=6516, sent=12, errors=298, err_flags=0, outbound=no, last_rx=13s ago", + "watchdog_before": "Unknown command", + "watchdog_after": "Unknown command", + "restoration_passed": true, + "restored_live_radio2_status": "off; RX=6506,0 TX=12,0 switches=0 errors=0 max=0us preamble=32,32", + "collection": { + "expected": 100, + "received": 100, + "missing_ordinals": [], + "duplicates": 0, + "wrong_profile_ordinals": [], + "drops": [], + "errors": [], + "framing": { + "ports_opened": 0, + "ports_closed": 0, + "request_frames_sent": 0, + "response_frames_received": 327, + "request_bytes_sent": 0, + "response_payload_bytes": 24158, + "discarded_prefix_bytes": 0, + "invalid_length_candidates": 0, + "ignored_push_frames": 0 + } + }, + "profile_results": { + "primary": { + "expected": 100, + "received": 100, + "missing_ordinals": [] + } + } + }, + "secondary": { + "board": "Heltec T096", + "firmware_version": "v1.18.0.1-halo-keymind-cascade-dev-4773ac42 (Build: 20-Oct-2026)", + "power_and_logging": { + "get powersaving": "on", + "get radio.rxps.config": "on,level=8,preamble=16,rx=39657,sleep=15975", + "get usb.logging": "usb.logging off; port: dedicated USB CDC 1, interface 02 (Linux: *-if02; tty/COM name is host-assigned)" + }, + "core_before": { + "battery_mv": 4206, + "uptime_secs": 14082, + "errors": 8, + "queue_len": 0 + }, + "core_after": { + "battery_mv": 4188, + "uptime_secs": 14291, + "errors": 8, + "queue_len": 0 + }, + "packet_deltas": { + "sent": 0, + "sent_direct": 0, + "sent_flood": 0, + "recv": 100, + "recv_errors": 0 + }, + "rf_packet_counters_before": { + "sent": 12, + "sent_direct": 0, + "sent_flood": 12, + "recv": 131, + "recv_errors": 112 + }, + "rf_packet_counters_after": { + "sent": 12, + "sent_direct": 0, + "sent_flood": 12, + "recv": 231, + "recv_errors": 112 + }, + "configured": { + "get tempradio": "TempRadio active: 918.000,500.00,5,5 782s left,preamble=200", + "get tempradio2": "off", + "get radio2.status": "off; RX=130,0 TX=12,0 switches=0 errors=0 max=0us preamble=200,32", + "get radio2.scan": "off", + "get radio2.timing": "off" + }, + "radio_diagnostics_before_configuration": "state=1(RX), recv=131, sent=8, errors=112, err_flags=8, outbound=no, last_rx=711s ago", + "radio_diagnostics_after": "state=1(RX), recv=231, sent=12, errors=112, err_flags=8, outbound=no, last_rx=5s ago", + "watchdog_before": "Unknown command", + "watchdog_after": "Unknown command", + "restoration_passed": true, + "restored_live_radio2_status": "off; RX=230,0 TX=12,0 switches=0 errors=0 max=0us preamble=200,32", + "collection": { + "expected": 100, + "received": 100, + "missing_ordinals": [], + "duplicates": 0, + "wrong_profile_ordinals": [], + "drops": [], + "errors": [], + "framing": { + "ports_opened": 0, + "ports_closed": 0, + "request_frames_sent": 0, + "response_frames_received": 313, + "request_bytes_sent": 0, + "response_payload_bytes": 24007, + "discarded_prefix_bytes": 0, + "invalid_length_candidates": 0, + "ignored_push_frames": 0 + } + }, + "profile_results": { + "secondary": { + "expected": 100, + "received": 100, + "missing_ordinals": [] + } + } + } + }, + "debugger": { + "schema": 1, + "log_sha256": "01c1b00f6980e40df40e96fffccc1fd20230ff77805ebb6db7d5e0207c899cb3", + "parser_sha256": "0b4ed3ff71291954012424d493b8550b19c3da0f0e5b97f55e5f78d57d4fb76f", + "config_sha256": "1feb1f14a80cc0e9f1ad403d4c67d73866eea8c548c8df4c3c93b66b0be8ee6f", + "duration_ms": 300000, + "maximum_elapsed_ms": 300500, + "minimum_sample_count": 20000, + "sampled_cpu_integrity_passed": false, + "sampled_cpu_integrity_failures": [ + "nonmonotonic_or_sparse_capture" + ], + "physical_RF_delivery_qualified_by_this_parser": false, + "cpu_sampling": { + "passed": false, + "failures": [ + "insufficient_sleeping_observations", + "nonmonotonic_or_sparse_capture" + ], + "sample_count": 27086, + "counts": { + "C_DEBUGEN": 0, + "C_HALT": 0, + "C_STEP": 0, + "C_MASKINTS": 0, + "S_HALT": 0, + "S_SLEEP": 8, + "S_LOCKUP": 0, + "S_RESET_ST": 0 + }, + "elapsed_ms": 300004, + "observed_ms": 299999.5, + "weighted_sleep_ms": 84.0, + "weighted_sleep_fraction": 0.00028000046666744446, + "unweighted_sleep_fraction": 0.0002953555342243225, + "max_gap_ms": 27.5, + "max_read_ms": 3, + "baseline_debug_ctrl_hex": "0000", + "baseline_C_DEBUGEN": false, + "initial_sticky_reset": false, + "final_DHCSR": "01010000", + "openocd_version": [ + "Open On-Chip Debugger 0.12.0+dev-snapshot (2025-07-16-14:15)" + ], + "qualification": "sampled CPU sleep observations, not exact residency or electrical current", + "firmware_identity_must_be_bound_separately": true, + "exact_hardware_identity_matched_before_and_after": true + }, + "offline_analysis_of_physical_capture": true, + "cpu_sleep_qualified": false, + "cpu_sleep_scope": "Active USB logging inhibits repeater CPU sleep; this is an RF/debug-integrity capture.", + "sampling_gap_review": { + "violations": 1, + "maximum_gap_ms": 27.5, + "frozen_limit_ms": 25, + "timestamps_monotonic": true, + "capture_interval_ms": [ + 121829, + 121857 + ], + "overlapped_any_missing_RF_packet": false, + "integrity_failure_waived": false + } + }, + "cleanup_passed": true, + "gateway_restored": true, + "errors": [ + { + "type": "RuntimeError", + "detail": "SWD capture integrity failed: " + } + ], + "independent_audit": { + "audit_passed": false, + "failures": [ + "missing_packets_rak", + "controller_recorded_errors", + "independent_swd_integrity_failed" + ], + "cautions": [], + "same_packet_witness_discrepancies": { + "primary": [ + "P032", + "P078", + "P079", + "P087" + ], + "secondary": [ + "S014", + "S029" + ] + }, + "auditor_sha256": "088b0f0f1ac482333b64ddc3c1a5de18b191aaa7bd35faeeb2814e1e75cdf5dd" + }, + "live_recommendation": { + "reply": "chirps=4.60,328.05; need=32,200; switch=1176us; loop=0us; test=4/4,4/4 ready; WARN recommended preamble: radio2=200", + "need_symbols": [ + 32, + 200 + ], + "selected_symbols": [ + 32, + 200 + ] + }, + "rf_collection_integrity_passed": true, + "comparison": { + "previous_receipt": "rak3401_radio2_sf5_bw500_p384_2026-10-23.safe.json", + "previous_radio2_preamble": 384, + "previous_primary_received": 97, + "previous_secondary_received": 100, + "expected_per_profile": 100, + "same_installed_firmware_and_RF_settings_except_secondary_preamble": true, + "new_payload_nonces": true, + "scope": "One finite batch per preamble; different run time and uncontrolled ambient RF; not a universal ranking." + } +}