mirror of
https://github.com/ruvnet/RuView
synced 2026-07-23 17:33:20 +00:00
ruv
f23e34ee5c
`firmware/esp32-csi-node` now builds for both `esp32s3` (existing
production) and `esp32c6` (new research / battery-seed target) from
the same source tree. ESP-IDF auto-applies `sdkconfig.defaults.esp32c6`
when the target is set to esp32c6; every C6 module is gated on
CONFIG_IDF_TARGET_ESP32C6 (or the SOC_WIFI_HE_SUPPORT capability) so
the S3 build path is byte-identical to today.
New modules (all #ifdef-gated, no-op stubs on S3):
- c6_twt.{h,c} — iTWT wrapper, graceful AP-NACK fallback
- c6_timesync.{h,c} — 802.15.4 beacon-based mesh time-sync, EUI-64
leader election, c6_timesync_get_epoch_us()
- c6_lp_core.{h,c} — wake-on-motion deep-sleep helper (ext1 path
this cut; real LP-core polling deferred)
ADR-018 frame extension:
- byte 18: PPDU type (0=HT/legacy, 1=HE-SU, 2=HE-MU, 3=HE-TB)
- byte 19: bandwidth + STBC + 802.15.4-sync-valid flags
- Magic 0xC5110001 unchanged — backwards compatible
- Dual-branch encoding handles both struct variants of
wifi_pkt_rx_ctrl_t (legacy S3 / HE C6) per CONFIG_SOC_WIFI_HE_SUPPORT
Critical bug fixed during live witness collection (verified across 3
boards on COM6/COM9/COM12):
- c6_timesync.c read MAC into a 6-byte buffer and ran MAC-48->EUI-64
conversion. But esp_read_mac(ESP_MAC_IEEE802154) returns 8 bytes
already in EUI-64 form on C6 — code was double-inserting FFFE.
Boot log was 206ef1fffefffe17, fix yields 206ef1fffe17278c which
matches esptool's eFuse reading exactly.
Tooling:
- CI workflow (firmware-ci.yml) extended with c6-4mb matrix row +
ADR-110 host-unit-test step
- Host unit tests for pure functions (mac48_to_eui64,
eui64_bytes_to_u64, PPDU encoding both branches) — runs on Ubuntu CI
- Multi-board live-capture harness (test/capture-3board-experiment.py)
- Witness bundle script records SHA-256s for s3-adr110, c6-adr110, and
s3-fair-adr110 (apples-to-apples) binary archives
Honest empirical findings (full report in docs/WITNESS-LOG-110.md):
- Verified live on 3 C6 boards: boot, 802.15.4 init w/ correct EUIs,
WiFi STA reaching assoc->run on ruv.net, TWT setup attempted +
gracefully NACKed (AP is 11n-only, TWT Responder:0), HE-MAC firmware
loaded
- NOT verified (need 11ax AP / second-channel exp / INA meter):
HE-LTF subcarrier expansion, TWT cadence determinism, ±100 µs sync
alignment, 5 µA hibernation
- Bug found: leader election doesn't step down under live WiFi load —
likely 2.4 GHz radio coex preemption (WiFi ch 5 vs 15.4 ch 15);
follow-up task #30
- Apples-to-apples size: S3-no-display = 886 KB, C6 = 1003 KB
(C6 is 13% LARGER for equivalent CSI features; the extra is the
802.15.4 + OpenThread stack that S3 lacks)
Tracking: ruvnet/RuView#762
Co-Authored-By: claude-flow <ruv@ruv.net>
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/**
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* @file c6_lp_core.h
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* @brief LP-core wake-on-motion hibernation helper — ADR-110 Phase 5.
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*
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* Arms the C6 LP RISC-V coprocessor as an always-on watchdog that
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* monitors a GPIO (typically a PIR or accelerometer interrupt line) and
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* wakes the HP core only when motion is detected. Targets ~5 µA
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* hibernation current for battery-powered Cognitum Seed nodes.
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*
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* Only built when CONFIG_IDF_TARGET_ESP32C6 + CONFIG_ULP_COPROC_TYPE_LP_CORE.
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*
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* P5 skeleton: the LP-core program is shipped as inline C compiled into
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* the main image. A follow-up turn migrates it to a separate
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* lp_core/main.c subproject with its own CMake.
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "esp_err.h"
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#include <stdint.h>
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#include <stdbool.h>
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#if defined(CONFIG_IDF_TARGET_ESP32C6) && defined(CONFIG_ULP_COPROC_TYPE_LP_CORE)
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/**
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* Configure the LP-core wake-on-motion watcher.
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*
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* @param wake_gpio GPIO pin to monitor (must be an RTC/LP-domain GPIO).
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* @param active_high true = wake on rising edge, false = falling.
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* @return ESP_OK on success.
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*/
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esp_err_t c6_lp_core_arm(int wake_gpio, bool active_high);
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/**
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* Enter deep sleep with the LP-core armed as the wake source. Does not
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* return — the next boot will see ESP_SLEEP_WAKEUP_LP_CORE in
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* esp_sleep_get_wakeup_cause().
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*/
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void c6_lp_core_hibernate_and_wait(void);
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/**
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* Returns true if the most recent boot was a wake from LP-core motion
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* detection (vs a cold boot or different wake source).
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*/
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bool c6_lp_core_was_motion_wake(void);
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#else
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static inline esp_err_t c6_lp_core_arm(int g, bool h) { (void)g; (void)h; return ESP_OK; }
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static inline void c6_lp_core_hibernate_and_wait(void) { }
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static inline bool c6_lp_core_was_motion_wake(void) { return false; }
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#endif
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#ifdef __cplusplus
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}
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#endif
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