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Tom 2d6dad9ee9 Portduino: Fix LR2021 switch tables, power ceilings and IRQ handling (#11382)
* fix(portduino): recognise the LR2021 power ceilings in --check

loadConfig() has read Lora.LR2021_MAX_POWER and Lora.LR2021_MAX_POWER_HF
since LR2021 support landed, but neither was listed in the config checker's
schema. --check therefore reported both as "unknown key ... ignored by
meshtasticd" -- false, and actively misleading: it tells the user to delete a
key that is doing exactly what they wanted.

This breaks the contract stated above schema(), that a key taught to
loadConfig() is added there too. CI enforces that by running --check over
bin/config.d/**, but no shipped config sets either key -- or mentions lr2021
at all -- so nothing ever tripped over the omission. It could only surface
for someone hand-writing an LR2021 config.

LR20x0 is the only module with two power ceilings, one per band, selected at
runtime by region; every other family expresses the split as separate module
names and needs a single key. That is the likely reason the pair was missed
while every other *_MAX_POWER key was added.

Also adds both to valueSpecs(), so a wrong-typed value is reported rather
than silently replaced by the default.

* feat(portduino): configurable IRQ DIO and a chip-neutral RF switch table for LR20x0

Two gaps found bringing an LR2021 up under meshtasticd on a Luckfox Lyra
Zero W. Both sit in the LR20x0 support added in #11252, and they interact:
the switch table has to be written slightly wrong to pass validation, and
the interrupt lands on a pin that table is driving. Every symptom is silent,
because begin() only exercises SPI and BUSY -- the radio reports init
success and then receives nothing.

IRQ DIO could not be set on Portduino
-------------------------------------
LR20x0Interface picked the IRQ DIO purely at compile time, and neither
LR2021_IRQ_DIO_NUM nor IRQ_DIO_NUM exists for a Portduino target, so
meshtasticd always fell through to RadioLib's default of DIO5 -- which is
also the first RF switch line on carriers using the DIO5-DIO8 table. A
variant says this with a #define (the pro-micro DIY board uses DIO9); a
carrier has only the YAML, and had no way to say it.

Adds Lora.IRQ_DIO_NUM, and an ARCH_PORTDUINO branch after the two existing
#define branches, so a variant that already sets one still wins.

The switch table was parsed as LR11xx-only
------------------------------------------
Pin names resolved to RADIOLIB_LR11X0_DIOn whatever the radio, and the mode
set was the LR11xx's, so MODE_RX_HF -- a mode the LR20x0 really has -- was
rejected as an unknown key and had to be omitted. The two families are not
interchangeable: an LR11xx has no DIO9, so its fifth switch slot is DIO10,
while an LR20x0's fifth slot is DIO9 and DIO10 is its sixth. A table naming
DIO10 was therefore driving the wrong pin on an LR20x0.

The YAML layer now stores what was written -- a DIO number and a neutral
mode id -- and each interface supplies its own DIO constants and OpMode_t
map to a shared builder. Neither family's constants are assumed to coincide
with the other's.

This also fixes a round trip in the config writer, which decoded pins by
comparing against RADIOLIB_LR11X0_* and always emitted five values per mode
row: for a four-pin table it produced YAML that --check would reject for
mismatched row lengths.

--check
-------
Findings are now judged against the resolved module rather than a fixed
list, so a mode or pin the part does have can no longer be rejected, and one
it does not have is named instead of silently accepted. The claim that the
table "is only applied to LR11xx radios" was stale and is corrected, and the
missing-table warning now covers both families. "auto" is excluded
throughout: the module has not been probed yet, so absence cannot be judged.

The IRQ/switch-pin collision is reported in both directions, including the
harder case where no key is set and the radio default collides -- nothing in
the file looks wrong. Note that listing a pin is what breaks it, not driving
it: setRfSwitchTable() reassigns the DIO function for every pin in the list
whatever the levels say, so an all-LOW column is still a collision.

Seven fixtures cover these, including a false-positive guard: DIO5 as the
interrupt is normal, and must stay silent when the table is elsewhere.

* feat(portduino): let the YAML ask for a TCXO probe, across every family that has one

A variant declares "a TCXO may or may not be fitted" at compile time with
TCXO_OPTIONAL, because the board is known when the image is built. A
Portduino carrier cannot: the same meshtasticd binary runs on hardware
populated either way, so the statement has to arrive as YAML and be answered
at runtime.

Adds Lora.TCXO_OPTIONAL, and TCXO_OPTIONAL_ENABLED in RadioLibInterface.h to
unify the two, so each driver asks the question once rather than growing a
second, Portduino-shaped code path. On an embedded target it stays a
compile-time constant, so `if (TCXO_OPTIONAL_ENABLED)` folds away exactly as
the old `#if` did: the nrf52_promicro_diy_tcxo image, which defines
TCXO_OPTIONAL and so exercises the converted branches, still ends at
0xDF1D0 -- the same address as before this change.

It is defined there rather than in a header of its own because
InterfacesTemplates.cpp includes all three interface .cpp files into one
translation unit, where a per-file definition would collide.

Covers every family that has a TCXO reference to probe for: SX126x
(sx1262/sx1268/LLCC68), LR11xx and LR20x0. With no DIO3_TCXO_VOLTAGE given,
the TCXO attempt uses RadioLib's own 1.6 V default rather than being skipped
-- otherwise there is nothing to fall back FROM and the flag would silently
do nothing. This is also the FIXME that sat on the Portduino branch in
LR20x0Interface: an unset voltage now means "no TCXO" explicitly.

Two things are deliberately left alone:

Each family keeps its own probe order. LR11xx tries XTAL first, because a
TCXO-first attempt hangs RadioLib's unbounded calibration wait on a module
with no TCXO fitted, whereas XTAL fails fast and cleanly on a module that
has one; LR20x0 and SX126x try the TCXO first. A carrier therefore behaves
the same way in a Portduino build as in an embedded one, and changing an
order stays a hardware-behaviour decision rather than a tidying-up one.

The SX126x retry is Portduino-only. An embedded TCXO_OPTIONAL board already
gets this from initLoRa(), which constructs a second SX126x interface with
no Vref when the first fails; retrying inside init() as well would leave
that ladder step unreachable and change how every existing t-echo-class
board reports its oscillator. A Portduino build has no ladder to fall
through, because the module is named in YAML rather than probed.

--check learns the key, reports which Vref will actually be tried, and warns
when it is set on a radio with no TCXO reference, where it is read, stored
and inert.

* docs(portduino): condense the comments on this branch

The repo asks for one or two lines and no multi-paragraph blocks, on the
grounds that the diff and the commit message carry the rationale while the
code carries the behaviour. What landed here was well past that: 163 added
comment lines, including a 26-line block above a single macro.

Removes the rhetoric, the issue numbers and the before-and-after asides, and
the notes on where a thing used to live. No added block is longer than three
lines now.

Two facts needed stating and are stated once each rather than repeated at
every use: the slot/DIO divergence between the families, in PortduinoGlue.h,
and the per-family TCXO probe order, in RadioLibInterface.h. The longest
surviving explanation is why an all-LOW switch column still collides with the
interrupt, which sits in the fixtures README because without it that pair of
fixtures reads as contradictory.

Comments only; no functional change.

* address CodeRabbit review on #11382

- SX126xInterface: distinguish an explicit DIO3_TCXO_VOLTAGE from the
  TCXO_OPTIONAL probing default in the debug log instead of always
  claiming the config field was set.
- ConfigCheck: modesFor() now reports an unresolved use_autoconf against
  the union of both radio families' modes, not the LR11xx subset - fixes
  a false "not a mode this part has" warning for valid LR2021-only modes
  (e.g. RFSW_RX_HF) before autodetection resolves the module.
- PortduinoGlue loadConfig: build rfswitch_mode_high[m] as a fresh
  per-row bitmask instead of OR-accumulating onto a stale value, so a
  config re-parse can clear a slot back to LOW.
- PortduinoGlue YAML serialization: gate rfswitch_table emission on
  has_rfswitch_table rather than rfswitch_dio_num[0] >= 0 (missed sparse
  pin lists), and track each emitted pin's original slot so row values
  line up correctly instead of shifting when a low slot is absent.
- config-dist.yaml: document the per-family TCXO/XTAL probe order
  (SX126x/LR20x0 TCXO-first, LR11x0 XTAL-first).
- Trim three overlong comments per the coding-guideline nitpicks.

Left the SX126x XTAL-retry-on-oscillator-failure nitpick alone -
RadioLib's begin() already does its own XOSC_START_ERR recovery
internally, and narrowing our wrapper's retry condition on top of that
needs hardware to verify it doesn't regress a real failure path.

Verified: bin/test-config-check.sh GREEN 69/69 against an isolated
native build; pio test -e native -f test_rtc PASSED.

* fix CI: cppcheck duplicateValueTernary, harden kRfSwitchModes init

LR11x0Interface::init(): work around cppcheck's duplicateValueTernary
on `TCXO_OPTIONAL_ENABLED ? 0 : tcxoVoltage` (both branches fold to 0
on a board with no ARCH_PORTDUINO, no TCXO_OPTIONAL, and no explicit
Vref, since tcxoVoltage already reduces to 0 via the same macro chain)
by splitting it into a plain assignment + if, rather than suppressing
the warning. The other TCXO_OPTIONAL_ENABLED ternaries in this PR
(LR11x0Interface.cpp:75, SX126xInterface.cpp:76, LR20x0Interface.cpp:
86,240) pick between TCXO_OPTIONAL_DEFAULT_VOLTAGE (1.6f) and 0, which
can never coincide, so they're unaffected and left as-is.

ConfigCheck.cpp: kRfSwitchModes was a namespace-scope global with
dynamic initialization (a lambda IIFE) reading kRfSwitchModeNames,
which is defined in a different translation unit (PortduinoGlue.cpp).
Currently safe only because kRfSwitchModeNames's initializer is
constant-expression-only (string literals + enum constants), which
the standard guarantees completes before any TU's dynamic
initializers - but that safety is silent and would break if
PortduinoGlue.cpp's array initializer ever stopped being a constant
expression, with nothing to warn a future editor. Converted to a
function-local static (Meyers' singleton), which is correct by
construction regardless of the other TU's initializer, updating all
4 call sites (definition + 3 uses) from kRfSwitchModes to
kRfSwitchModes().

Verified: pio test -e native -f test_radio PASSED; bin/test-config-
check.sh GREEN 69/69 against an isolated native build.

* refactor: simplify TCXO voltage handling across interfaces and improve comments

* fix rfswitch_table cross-file merge; drop now-stale checker warning

Three CodeRabbit findings on 09e0d390c, addressed together since #2
and #3 are the same root cause:

1. PortduinoGlue.cpp: require an exact "DIO<n>" match when parsing
   rfswitch_table.pins. sscanf's %d stops at the first non-digit, so
   "DIO5invalid" silently parsed as DIO5 at runtime even though
   ConfigCheck.cpp's static validator (exact match against
   kRfSwitchPins) already rejected it - checker and loader disagreed.

2. PortduinoGlue.cpp: reset all 5 pin slots and all 8 mode rows before
   applying a table, rather than only overwriting what the new table
   mentions. A later config.d file that omitted a mode a prior file
   had set (e.g. only redefining MODE_TX) let the earlier file's
   MODE_RX leak through, contradicting "last file wins" - the rule
   every other Lora: key already follows.

3. ConfigCheck.cpp: with #2 fixed, rfswitch_table behaves like any
   other cross-file key, so removed the special-cased ERROR in
   checkCrossFileOverlap ("These do NOT override each other... OR of
   every table") - it described the pre-fix OR-accumulation bug and
   is no longer accurate. Falls through to the generic "last file
   wins" INFO now. Renamed/repurposed the rfswitch-sticky fixture to
   rfswitch-last-wins and updated its assertion (was rc=1 asserting
   the old error text, now rc=0 asserting the generic info) and the
   fixtures README.

Verified: bin/test-config-check.sh GREEN 69/69 against an isolated
native build, including the renamed assertion.

* Assert the effective rfswitch table, not just the overlap diagnostic

The "last one wins" case checked that the cross-file info fires and that the
result is clean. Neither observes the table the loader actually ended up with,
so the merge bug ee9b5b81e fixed - a later table leaving an earlier file's pins
and mode rows as carryover - would still have passed it. Raised by CodeRabbit.

Asserting the value needs two things the existing case cannot supply.

The winner has to be deterministic. Both files in rfswitch-last-wins/ sit in
config.d/, which is walked with a bare directory_iterator and no sort, so which
one lands last is up to the filesystem - the point configd-conflict/ exists to
make, and the reason the checker warns rather than assuming alphabetical order.
rfswitch-replace/ puts the losing table in config.yaml instead, which is always
loaded before config.d/. The loser is the wider of the two, four pins and three
all-HIGH mode rows against the winner's two pins and one all-LOW row, so
carryover shows up as a surviving pin, a surviving mode row, or a HIGH that
should be LOW.

The table has to be observable. The check report says no more than "RF switch
table   : set", and check-yaml cannot help: it is --check --output-yaml, and
--check wins and exits before the dump - which the case just below it asserts.
emit_yaml() does serialise the effective table, so the assert helper grows a
yaml mode that passes --output-yaml alone.

Confirmed non-vacuous: with the reset loop in loadConfig() removed, the new
assertion fails and the old one still passes.

Config-check suite GREEN 70/70. Native suite GREEN 44/44, 968 cases.

* Say nothing about rows the radio will never read

Two of the RF-switch diagnostics judged a table against a family's mode
list without first asking whether the module reads a table at all.

modesFor() treated every module that was not an LR20x0 as LR11xx-like, so
an sx1262 carrying a table was told which of its rows were "not a mode
sx1262 has" and which modes it had omitted - alongside the correct warning
that the whole table is inert. pinsFor() already returned an empty set for
these parts and its caller already guarded on that; the mode path now
matches.

The missing-mode advice is dropped under "auto" as well. The module has
not been probed, so the union of both families is all there is to compare
against, and naming its absent modes would advise adding MODE_TX_HP,
MODE_GNSS and MODE_WIFI rows to what may turn out to be an LR20x0.

Fixtures for both silences, and an assert() needle prefixed with '!' to
hold them: a line that is merely absent today is otherwise nobody's
regression.

Also corrects the kLr11x0SwitchDios/kLr20x0SwitchDios comments. They
describe a slot mapping, but buildRfSwitchTable() searches them by value
to find the parallel pin constant - and with 7 DIOs against 5 YAML pin
slots, the LR20x0 array could not be positional.

* Warn when the two TCXO keys ask for opposite things

DIO3_TCXO_VOLTAGE written out as false or 0 asks for DIO3 to be left
alone, and stores identically to the key being absent - so TCXO_OPTIONAL
then probes DIO3 at the radio default anyway. Both keys behave exactly as
documented; only together are they wrong, which is what makes the outcome
surprising. loadConfig() now keeps the distinction that the store loses,
and --check reports the contradiction and which key to drop.

The flag is diagnostic only and is not serialized: an explicit false and
an absent key both round-trip as absent, as they did before.

Also fixes the Portduino TCXO log lines, which named the variant define
SX126X_DIO3_TCXO_VOLTAGE on a path where the knob is the YAML key, and
adds a TODO over the SX126x XTAL retry. RadioLib has autocorrected that
case itself since 7.5.0 - SX126x::modSetup() retries config() on the XTAL
when begin() fails with SPI_CMD_FAILED and XOSC_START_ERR - so the
ordinary case never reaches our retry and what does is mostly invalid
settings, logged as a TCXO fault.

* feat(portduino): bound Lora.IRQ_DIO_NUM, accept the older spelling, document both

An LR20x0 raises its interrupt on DIO5 through DIO11. Anything else was read
straight out of the YAML and programmed into RadioLib, where it routes the IRQ
nowhere: begin() touches only SPI and BUSY, so the radio reports init success
and then never receives a packet - the same failure the switch-pin collision
check already covers, reached by a typo instead.

Refuse it in loadConfig() and again in the driver before it reaches RadioLib,
warning both times. Because loadConfig() discards the value, the merged config
cannot tell a rejected number from an absent key, so --check judges the range in
its per-file pass where the offending line is still known.

LR2021_IRQ_DIO_NUM, the spelling carried by the two earlier LR2021 branches, is
read when IRQ_DIO_NUM is absent and reported as shadowed when it is not. Both
keys, the DIO range and the collision that makes the setting matter are now
described in config-dist.yaml.

* fix(portduino): a rejected IRQ_DIO_NUM returns to the radio default

loadConfig() runs once per file - the main config, then each file in
config.d/ - and they all write the same portduino_config. An out-of-range
Lora.IRQ_DIO_NUM warned that it was falling back to the radio default but
left any valid value an earlier file had set, so LR20x0Interface went on
programming that stale DIO.

Reset it to -1, the unset sentinel every other reader already tests for.

Pinned by a new fixture: DIO9 in the main config, out of range in
config.d/. The main config is always read first, so the ordering is
deterministic, unlike two files in config.d/ (see rfswitch-last-wins).
The assertion requires the summary to name the radio default and not DIO9;
with the reset removed and rebuilt, it is the only assertion that fails.
2026-09-16 10:44:06 +00:00
TomandClaude Opus 5 21e3a583bd Yaml check for Meshtasticd (#11224)
* feat(portduino): add `meshtasticd --check` config validator

Users hand-writing files in /etc/meshtasticd/config.d/ get no feedback when a
key is misplaced, misspelled or duplicated: meshtasticd silently ignores what
it does not read, so a broken config looks identical to a working one.

Add a --check mode that loads the configuration exactly as startup does, then
reports what it found and exits:

- Duplicate keys, via the yaml-cpp Parser/EventHandler stream. The Node API
  cannot see them because the map is already collapsed by the time it exists,
  and yaml-cpp keeps the FIRST occurrence, so a later override is discarded.
- Unknown or misnested keys, against a schema mirroring what loadConfig()
  reads, with a hint naming the section a stray key actually belongs to.
- rfswitch_table validation: unrecognised pins, mode rows whose length does not
  match the pin list, values that are not HIGH/LOW, and unknown modes.
- Cross-file overlap: every .yaml in the config directory merges into one
  portduino_config, so the file loaded LAST wins, the opposite of the
  within-file rule. Those files are read in filesystem order, not alphabetical.
- A warning when more than one file defines a Lora section: spidev, spiSpeed,
  gpiochip, DIO2_AS_RF_SWITCH, DIO3_TCXO_VOLTAGE and USB_PID/VID/Serialnum are
  assigned unconditionally with a default every time one is seen, so any of
  them not repeated in the last file loaded is silently reset.
- The resolved gpiochip/line for each pin, since a line that exists on the
  wrong chip is claimed successfully and then silently does nothing.

Exits non-zero when errors were found so it can also gate CI over
bin/config.d/**, keeping one implementation rather than a second schema.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(portduino): flag pins that resolve to -1 in --check

A pin key whose value will not convert to a number falls back to RADIOLIB_NC
(-1) while still being marked enabled, and initGPIOPin() then trips an
assertion inside LinuxGPIOPin rather than failing cleanly. YAML indentation
makes this easy to hit by accident: a stray line under "CS: 8" folds into the
value as a multi-line scalar, so the file parses, the daemon crashes with a
stack trace from a library file, and --check reported "Configuration looks
good" while printing "pin -1" two lines above.

Report it as an error naming the likely cause instead.

Also correct a comment claiming unparseable config.d files are skipped
silently. They are not: loadConfig() prints "*** Exception ..." with the line
and column. It is the discarded return value, not the diagnostic, that makes
the file's absence from the merged config easy to miss.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(portduino): cover `meshtasticd --check` with fixtures and a fuzz suite

Adds the tests the config validator was missing, and the checks and fixes that
writing them turned up. The theme throughout is configuration that the YAML
parser accepts but that does not mean what it looks like it means.

Tests
-----

bin/test-config-check.sh - 57 assertions driving a built meshtasticd against
test/fixtures/portduino-config (50 fixtures plus two config.d trees). A shell
test rather than a Unity suite because both behaviours under test are properties
of the process: --check is judged by its exit status and printed report, and the
"a normal run rejects a bad config" path ends in exit() inside portduinoSetup(),
neither of which is reachable from a suite that links one translation unit.
Every fixture carries a comment header naming its planted fault and the expected
finding, so it can be read on its own. Coverage:

  * a clean config for each of the ten radio module families (RF95, sx1262,
    sx1268, LLCC68, sx1280, lr1110, lr1120, lr1121, sim, auto), asserted both
    findings-free and resolving to that module, so a silent fallback to sim
    cannot pass
  * LR11xx rfswitch tables: unrecognised pins, rows longer and shorter than the
    pin count, levels that are not exactly HIGH, a missing pins list, more than
    five pins, a scalar table, unknown MODE_ keys, a MODE_ row stranded one
    level out, and a legal partial table
  * the PA gain table in both accepted shapes, entries outside the uint16 range
    it is stored in, and more than the 22 points that are kept
  * values of the wrong type, split by consequence: the two settings read with
    no fallback stop meshtasticd starting, everything else is silently replaced
    by its default
  * out-of-range and unit mistakes: TCXO voltage written in millivolts, ports
    outside their usable range, an over-long StatusMessage
  * MAC sources: both keys set at once, a malformed address, an interface that
    does not exist
  * structural faults: duplicate keys, non-mapping and unknown sections, a key
    left at the top level, a sequence at the document root, an empty file,
    unreadable pins, unparseable YAML
  * cross-file behaviour over a config.d directory, including the switch tables
    that do not override each other
  * five configs run WITHOUT --check, each of which must still be refused, so
    check mode cannot quietly make the normal path permissive

test/test_fuzz_config - adversarial fuzzing of the checker itself, the "the tool
meant to diagnose your config crashes on it" failure mode. Scope is deliberately
narrow: yaml-cpp does the parsing and is fuzzed upstream, so what is exercised
here is our code above the parse, above all the duplicate-key detector, which is
the one hand-rolled piece and walks the raw parser event stream with its own
stack. Groups: the checked-in fixtures as a seed corpus, 3000 byte mutations of
them (flips, truncation, insertion, splicing, deletion), and structural torture
(nesting to 4096 in flow and block style, duplicate keys at depth, anchors,
aliases and merge keys, 64KB keys, 256KB scalars, multi-document files). A
fourth group of random bytes is present but disabled behind
FUZZ_CONFIG_RANDOM_BYTES: it was half the runtime for the least return, since
uniform noise is rejected on the first token. The contract is crash-freedom and
termination under AddressSanitizer, not any particular finding.

CI runs the shell test in the existing native simulator job; the fuzz suite is
picked up by the existing ^test_fuzz_ area rule. native-suite-count 40 -> 41.
The fixtures are exempt from trunk in .trunk/trunk.yaml, since prettier rejects
the duplicate keys and bad indentation that are the point of them.

Checker fixes found while writing the tests
-------------------------------------------

--check reported a clean exit 0 on configs meshtasticd then refuses to boot, the
worst failure a diagnostic tool can have. Four hard exits inside loadConfig()
killed the report before it printed: an unparseable file, an unknown Lora.Module,
MACAddress and MACAddressSource both set, and HUB75 on a build without it. All
are now reported as findings, and all are still refused on a normal run.

New validation: Lora.Module against the accepted spellings, which are matched
exactly and inconsistently cased, with a suggestion when only case differs; a
per-key value type table covering ~85 keys, tested by asking yaml-cpp to perform
the same conversion loadConfig() will so it cannot drift; the PA gain table;
DIO3_TCXO_VOLTAGE, which is in volts and multiplied by 1000, so the millivolt
value everything else uses silently asks for 1800V; APIPort and Webserver.Port
ranges; MaxNodes; StatusMessage truncation; MAC address and source; and an
unreadable ConfigDirectory.

Also fixes a crash: a ConfigDirectory that cannot be read threw an uncaught
filesystem_error from directory_iterator and aborted meshtasticd with SIGABRT,
taking --check down with it. It now fails cleanly.

Two smaller ones: cppcheck's uselessCallsSubstr on the ancestor walk, which was
failing every check job; and the duplicate-key detector's stack pop, which was
unguarded and relied on yaml-cpp emitting balanced events.

Switch tables are the one place "the file loaded last wins" is false. The loader
only ever writes HIGH and never writes LOW back, so a HIGH from an earlier file
survives a later file that clears it and the radio drives the OR of every table
loaded. Confirmed with --output-yaml. Reported as an error for now; the loader
itself is left alone, as that changes RF behaviour.

* fix(portduino): report CH341 pins as adapter indexes, not gpiochip lines

--check printed "Resolved GPIO lines (what meshtasticd will try to claim)" for
every config, listing a gpiochip and line for each Lora pin and advising they be
confirmed against gpiodetect and gpioinfo. For spidev: ch341 every part of that
is false. portduinoSetup() skips initGPIOPin() for every Lora pin when spidev is
ch341 and hands the raw numbers to Ch341Hal, so nothing is claimed from a
gpiochip -- and on Windows and macOS, where a USB adapter is the only way to
attach a radio, there is no gpiochip, gpiodetect or gpioinfo to check against in
the first place. The checker had no ch341 coverage at all: not one fixture used
it, so the whole USB-SPI path went unexercised.

The summary now splits on the transport. A ch341 device gets its pins listed as
adapter indexes with the gpiod advice dropped, and a gpiochip or line mapping
written alongside it is reported: those are read, stored, and never used.

Also: "RF switch table: not set" read as a gap on an SX126x, where there is
nothing to set. setRfSwitchTable() is only ever called for an LR11xx, so absence
is now "not needed for this module" everywhere else, and "not resolved yet" for
auto, which has no module to judge against.

Fixtures: usb-ch341.yaml (clean, the meshstick shape) and ch341-gpiochip.yaml.

CI fix
------

test-native was RED on "config.d overrides are reported", which wanted 2
warnings and got 1. The fixture's two config.d files name different modules, so
which one wins -- and whether the LR11xx-without-a-switch-table warning fires --
depends on the order the filesystem returns them in. That is the very thing the
fixture exists to demonstrate, so the count is no longer asserted; the report's
own order caveat is asserted instead.

Review fixes
------------

The unreadable-ConfigDirectory diagnostic was the one new print in
PortduinoGlue.cpp not gated behind !configCheck, so it landed ahead of the report
header and broke the clean output the rest of the change is careful to keep.

Docs: rfswitch-valid.yaml carries seven modes, not eight, and empty-file.yaml is
comments-only rather than zero bytes.

* style(portduino): trim --check comment blocks and reconcile suite count

Condense the multi-paragraph comment blocks in the --check validator to the
one-to-two-line convention, and bump test/native-suite-count to 42 for the
test_fuzz_config suite added here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-30 11:06:24 +00:00