meshcore-solo-site's new cross-visitor relay bridge (Phase 3) needs a way
to read a sim instance's live freq/bw/sf/cr so a WebSocket relay server
can fan traffic out only to other visitors tuned to the same params,
mirroring real LoRa channel isolation. Added sim_radio_get_params()
(examples/companion_radio/main.cpp), reading NodePrefs directly -- the
real live source of truth, since SimRadio::setParams() has always been a
complete no-op (accepts and discards its arguments). Out-params via
pointer, same buffer-pointer idiom sim_radio_poll_tx() already uses;
build_wasm.sh needed HEAPF32/HEAP32 added to EXPORTED_RUNTIME_METHODS so
JS can read them back.
While testing the relay bridge with two independent browser contexts, hit
a real bug: sim_instance_salt() (SimInstance.h) is a pure function of the
simInstanceTag STRING ('hero'/'B'/'R'), so it's only useful for telling
apart same-tab instances -- it's identical for two genuinely different
visitors who both boot a 'hero' instance. Combined with SimRNG::begin()'s
other seed ingredients -- time(NULL) (1-second resolution) and a WASM
heap pointer (no ASLR inside the sandbox, so it's fully deterministic
across independent boots of the same binary) -- two different visitors
landing on the same wall-clock second reliably generated byte-identical
Ed25519 identities (confirmed: two fresh browser contexts launched
together produced provably identical advert packets end to end).
Fixed by mixing in real crypto.getRandomValues()-sourced entropy from the
host page (new sim_instance_entropy(), read the same way simInstanceTag
already is) into both SimRNG::begin() and the twin seeding pattern in
SimRadio::getRngSeed(). Applies to every sim instance uniformly (hero/B/R
all get proper per-session entropy now), not just the new relay path --
strictly an improvement with no compatibility concern, since identity
generation only ever runs once per fresh/empty IDBFS.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018iubftDmKNWmkNnhJRz8UH
- Turn on ENV_INCLUDE_GPS/UI_SENSORS_PAGE for the sim build (both were
compiled out entirely, so the GPS and Sensors home-page carousel
entries didn't exist regardless of home_pages_mask) -- SimSensorManager
already fed a real JS-settable GPS fix and a temperature/battery
channel with nothing to display them.
- Add sim_test_advert_flood() to the repeater build too, mirroring
companion_radio's hook: MyMesh::updateAdvertTimer() otherwise leaves
the repeater's first self-advert 2 minutes out, so a host page
couldn't make it discoverable as a contact (needed for admin login)
right away.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018iubftDmKNWmkNnhJRz8UH
Code-review pass over the buzzer/sim commits turned up several real bugs,
plus two issues found afterward from manual browser testing:
Rendering (SimDisplayDriverCanvas, variants/sim/SimDisplayDriver.h + target.cpp):
- getTextWidth() measured UTF-8 BYTES (strlen()*6), not codepoints. Since
b067e95b stopped stripping accents, any accented string now measures
double its real width -- mis-centred titles, premature ellipsis/marquee,
badges pushed off-screen. Now uses the real MiscFixedRenderer measurement
(miscFixedTextWidth()), same as SH1106Display/SSD1306Display.
- Added the matching getCodepointWidth() override (O(1) single-glyph
advance), same pattern as SSD1306Display.
- isSingleFont() was left at the base class's `false`, though this backend
only ever renders MiscFixed -- UITask.cpp's status-bar indicator height
keys off this (`lh-2` vs `lh`), so the sim drew it 2px taller than a real
board.
- print() blitted the full 128x64 canvas on every call (dozens per frame,
60fps) -- now tracks a dirty bounding box and only clears/blits the
region actually touched.
Web Audio (buzzer bridge, index.html + mesh.html):
- No AudioContext.resume() -- a context created (or later suspended) in the
'suspended' state (Safari/Firefox, or any browser backgrounding the tab)
stayed silent forever. Now resumed on every gesture.
- linearRampToValueAtTime with no anchoring setValueAtTime interpolates
from the LAST scheduled event, not "now" -- so the anti-click ramps could
effectively snap instead of fading. Fixed with cancelScheduledValues +
setValueAtTime(current) before each ramp.
- mesh.html: a gesture only armed the clicked instance's audio. Click A,
send A->B, and B (the one actually meant to beep on receipt) stayed
silent. Now any gesture arms both A and B.
- RTTTL rests (freq=0, still "playing") now explicitly hold pitch and drop
gain instead of it happening to work by coincidence.
Misc: sim_test_get_num_contacts() was missing the g_sim_ready gate every
other sim_test_* hook has, so it could return a bogus negative count before
setup() finishes seeding num_contacts.
Splash screen missing "Solo <version>" bar: variants/sim never defined
FIRMWARE_SOLO_BUILD (every real Solo board does), so SplashScreen silently
skipped that whole line -- the sim looked like a plain non-Solo companion
build. Added -D FIRMWARE_SOLO_BUILD=1 to platformio.ini and build_wasm.sh.
Verified on a real canvas screenshot: "MESHCORE 1.17.1 / 19 Aug 2026 /
Solo v1.27".
Wasm-fetch error message: "failed to start: RuntimeError: Aborted(both
async and sync fetching of the wasm failed)" is Emscripten's own opaque
message for the single most common real cause -- the page opened via
file://...index.html instead of served over http(s) (fetch() on a local
file is blocked by CORS in both Chrome and Safari, confirmed by reproducing
the exact same error/stack via file://). Both harnesses now detect
location.protocol === 'file:' and show an actionable message with the
one-line fix instead of the raw stack trace.
Battery-set latency: SimMainBoard's battery value is an exact, instantaneous
JS-set integer (see sim_battery_set_mv()), but UITask's battery-check code
polls it every 8s and runs it through an EMA (alpha=0.2) meant to smooth a
REAL board's noisy ADC -- so a value typed into the demo UI could take tens
of seconds to visibly settle. SIM_PLATFORM now checks every 250ms and skips
the EMA (nothing to smooth), since the reading is already clean. Measured
on real canvas pixels: indicator update now lands within one screen-refresh
cycle instead of up to 8s+.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
genericBuzzer (src/helpers/ui/buzzer.h/.cpp) gets a third platform branch,
#elif defined(SIM_PLATFORM), alongside the existing NRF52 (direct PWM) and
NonBlockingRtttl paths -- purely additive, no changes to either real-hardware
branch. It reuses the NRF52 branch's already hardware-free RTTTL parser
(_parseHeader/_parseNext/_noteFreq, now shared via a widened guard) but
tracks (current frequency, note-end-time) instead of touching real PWM/timer
registers, advancing on plain millis() polling from loop() -- same
non-blocking shape UITask already drives every tick.
Wired into the sim build the same way every real board sets its buzzer pin
(-D PIN_BUZZER=<n> in build_flags/DEFINES; here it's a dummy sentinel since
there's no real pin, just something to activate the existing #ifdef
PIN_BUZZER guards in UITask.h/.cpp/SoundNotifier.h unchanged), plus two new
small UITask accessors (isBuzzerPlaying/buzzerFreqHz/buzzerVolume) and three
EMSCRIPTEN_KEEPALIVE exports so a host page can poll the buzzer's state.
Browser side: one Web Audio oscillator+gain per companion instance (index.html
single-instance; mesh.html per A/B, not R which is headless), created lazily
on the first real user gesture (AudioContext autoplay policy), polled every
20ms and mapped to the oscillator frequency/gain -- so every notification
sound, ringtone, alarm, and volume-blip that already worked on real hardware
now actually produces audio in the browser, unchanged at the call-site level.
Verified end-to-end with real RTTTL playback traces (not just "no errors"):
the startup jingle's exact note frequencies (C6/E6/G6) and a real DM-received
notification triggering the receiving instance's Web Audio gain node from 0
to its mapped volume and back, matching the actual "MsgRcv3" melody's notes.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Two prototype polish fixes ahead of the website embed work:
1. Holding Enter (the sim's main way into "the rest of the options") did
nothing -- the JS bridge's sim_enqueue_key() went straight to
enqueueKey(), bypassing UITask::handleLongPress() entirely, so
KEY_CONTEXT_MENU could never be reached. Add injectSimKeyLongPress()/
sim_enqueue_key_longpress(), which does route through the real
handleLongPress() (same code a real MomentaryButton(pin, 1000, ...)
reaches), and wire up press-and-hold (buttons + Enter/Space key) in both
web harnesses with the same 1000ms threshold real hardware uses.
2. SimDisplayDriverCanvas::print() drew text with the browser's own system
font (ctx.fillText, '8px monospace') instead of the real bitmap font a
MeshCore-Solo board renders with OLED_MISC_FIXED_FONT=1 (see
solo/heltec_v3/platformio.ini). Vendor the real Adafruit_GFX (unmodified,
from the same PlatformIO registry package a real board build pulls) into
variants/sim/thirdparty/gfx/, and render print() through the real,
shared src/helpers/ui/MiscFixedRenderer.h + MiscFixedFont.h -- byte-
identical glyphs to real hardware, not a look-alike.
Verified in a real Chromium (Playwright): short Enter -> "CLOCK TOOLS",
held Enter -> "CLOCK FIELDS" (gotoDashboardConfig(), proving
KEY_CONTEXT_MENU is really reached); font renders as hard square pixels,
inverse/selected-row text still punches correctly through a filled bar.
Full regression re-run clean: all 3 native envs, wasm companion_radio, and
the two-instance + repeater mesh demo (relay routing, DM delivery).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Ports examples/simple_repeater to variants/sim/ (new sim_simple_repeater
native env + build_wasm_repeater.sh) and adds a JS "ether"
(variants/sim/web/mesh.html) that bridges two real companion_radio WASM
instances through a real simple_repeater instance in a strict A<->R<->B
topology (no direct A-B link), proving genuine relay routing rather than
a shortcut.
Also fixes multi-instance issues Phase 2's single-instance design never
surfaced: SimDisplayDriver's canvas context/id caching was keyed on a
single global instead of per-instance, and both wasm builds were missing
_malloc/_free/HEAPU8 runtime exports needed for the ether to poke bytes
into an instance's memory.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
New board variant compiling the unmodified MyMesh/UITask/DataStore app
logic against real mesh::Radio/MainBoard/RTCClock/RNG interfaces, for
running the actual firmware outside embedded hardware:
- Native (plain g++, platform = native): ASCII-art display over stdout,
stdin-driven input, local-disk-backed DataStore/IdentityStore.
- Emscripten/WASM (variants/sim/build_wasm.sh, since PlatformIO's native
platform force-overrides any CC/CXX toolchain override back to system
clang++): canvas-backed display, IDBFS-backed persistence across page
reloads, JS-callable input via sim_enqueue_key(), emscripten_set_main_loop.
Real rweather/Crypto (AES128/SHA256/Ed25519) vendored unmodified and
proven working on both targets. variants/sim/web/index.html is a bare
verification harness, not the polished website embed.
JakubandClaude Sonnet 5