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Introduction
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WiFi and MQTT by Firmware Type
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Role comes first
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Profile matrix
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Portable MQTT observer retained surface
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CLI Command Availability Matrix
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CLI Commands
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Companion Protocol
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Halo and Keymind Branch Settings
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MeshCore KISS Modem Protocol
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Easy firmware updates over LoRa
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MeshCore OTA - .mota container &amp; LoRa protocol
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Updating your node over the air (OTA) - user guide
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Stats Binary Frame Structures
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Telemetry history decoder
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Role comes first
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Profile matrix
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Portable MQTT observer retained surface
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Discovery invariant
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<h1 id="cli-availability-by-firmware-build">CLI Availability by Firmware Build</h1>
<p>MeshCore command availability is determined in three layers:</p>
<ol>
<li><strong>Role</strong> - repeater, room server, sensor, companion, bridge, or KISS modem.</li>
<li><strong>Build profile</strong> - standard, portable, logging, OTA, or FULL.</li>
<li><strong>Compiled hardware features</strong> - WiFi, MQTT, GPS, external sensors, PSRAM,
Ethernet, and similar optional support.</li>
</ol>
<p>The complete command descriptions are in <a href="../cli_commands/">CLI Commands</a>. This
page describes the commands intentionally omitted or limited by build profile.
The <a href="../cli_command_availability/">CLI Command Availability Matrix</a> expands this
summary into separate nRF52 and ESP32 command tables.</p>
<h2 id="role-comes-first">Role comes first</h2>
<table>
<thead>
<tr>
<th>Role</th>
<th>Text administration CLI</th>
</tr>
</thead>
<tbody>
<tr>
<td>Repeater</td>
<td>Full repeater administration surface, subject to the profile differences below</td>
</tr>
<tr>
<td>Room server</td>
<td>Room-server administration surface, subject to the profile differences below</td>
</tr>
<tr>
<td>Sensor</td>
<td>Sensor command surface; it does not acquire the repeater administration tree</td>
</tr>
<tr>
<td>Serial, USB, BLE, or WiFi companion</td>
<td>Uses the companion protocol; any serial diagnostics are target-specific</td>
</tr>
<tr>
<td>KISS modem</td>
<td>Uses the KISS/TNC frame interface, not the repeater text CLI</td>
</tr>
<tr>
<td>Bridge</td>
<td>Uses its base role plus commands for the bridge transport compiled into that target</td>
</tr>
</tbody>
</table>
<p>A command belonging to a different role is not considered a profile cut. For
example, adding FULL features to a sensor does not turn it into a repeater
administrator.</p>
<p>Repeater profiles use 254 neighbor entries across supported platforms. The
classic T-Beam SX1262 and SX1276 MQTT observer repeaters are the exception and
retain 50 because their MQTT discovery tables are constrained by internal DRAM.</p>
<h2 id="profile-matrix">Profile matrix</h2>
<table>
<thead>
<tr>
<th>Build/profile</th>
<th>Command availability</th>
</tr>
</thead>
<tbody>
<tr>
<td>Standard non-MQTT repeater or room server</td>
<td>Keeps the normal role CLI. Size-constrained ESP32 artifacts can omit WebConfig and browser WiFi OTA, so their WebConfig/WiFi commands are unavailable.</td>
</tr>
<tr>
<td>Standard logging</td>
<td>Logging does not remove commands by itself. It has the same CLI as the selected role/profile and adds the compiled logging behavior.</td>
</tr>
<tr>
<td>LoRa-OTA (<code>-ota-</code>)</td>
<td>LoRa OTA adds the <code>ota ...</code> commands; it does not otherwise reduce the role CLI. ESP32 <code>no_external_sensors</code> artifacts retain the compact browser WiFi uploader and use a 254-entry neighbor table. A portable OTA artifact can still have the other portable restrictions described below.</td>
</tr>
<tr>
<td>Portable MQTT observer</td>
<td>Keeps MQTT/WiFi commissioning, bridge control, radio essentials, update commands, basic identity/status commands, <code>neighbors</code>, <code>discover.neighbors</code>, <code>outpath</code>, and <code>altpath</code>. The large repeater administration tree is omitted to fit the legacy ESP32 application slot.</td>
</tr>
<tr>
<td>Portable ESP-NOW bridge</td>
<td>Keeps the repeater's role-specific handlers and a reduced common configuration surface containing radio and bridge essentials, including <code>rxdelay</code>, <code>txdelay</code>, <code>outpath</code>, and <code>altpath</code>.</td>
</tr>
<tr>
<td>FULL ESP32</td>
<td>Uses the matching MQTT target with logging off, removes size-based CLI cuts, and restores the complete command surface supported by that role and hardware.</td>
</tr>
<tr>
<td>FULL ESP32 logging</td>
<td>Uses the matching non-MQTT target with debug and packet logging enabled and the complete command surface supported by that role and hardware.</td>
</tr>
<tr>
<td><code>no_external_sensors</code></td>
<td>Removes optional external-sensor drivers and their settings; it does not remove core repeater discovery or routing commands.</td>
</tr>
</tbody>
</table>
<p><code>logging</code>, <code>OTA</code>, and <code>FULL</code> describe independent build features. Do not infer
that a command is missing merely because <code>logging</code> appears in the filename.</p>
<h2 id="portable-mqtt-observer-retained-surface">Portable MQTT observer retained surface</h2>
<p>The portable MQTT observer keeps these command groups:</p>
<ul>
<li>lifecycle and identity: <code>reboot</code>, <code>poweroff</code>, <code>shutdown</code>, <code>ver</code>, <code>board</code>,
<code>password</code>, and <code>erase</code> on the local console;</li>
<li>radio operation: <code>advert</code>, <code>advert.zerohop</code>, <code>clock</code>, <code>clock sync</code>, <code>time</code>,
<code>memory</code>, <code>neighbors</code>, <code>discover.neighbors</code>, and the remote-client routing
controls <code>outpath</code> and <code>altpath</code>;</li>
<li>browser/update control when compiled: <code>start ota</code>, <code>stop ota</code>, <code>ota check</code>,
and <code>ota update</code>;</li>
<li>radio essentials through <code>get</code>/<code>set</code>: radio parameters, TX power, CAD,
interference threshold, AGC reset interval, RX gain, <code>rxdelay</code>, <code>txdelay</code>,
repeat state, and applicable FEM controls;</li>
<li>MQTT, WiFi, NTP, bridge, and alert commands implemented by the observer
feature set;</li>
<li>region and onboard-GPS commands that fit and are compiled into the selected
target.</li>
</ul>
<p>Everything in the repeater-only administration tree that is not listed above is
intentionally cut from this portable profile. The main omissions include ACL
editing, flood filter/moderation/scope administration, advanced mesh-clock
controls, recent-repeater/path administration, battery-alert/RX-watchdog
controls, stored-log management, and external-sensor administration. Use the
matching FULL ESP32 build when those commands are required.</p>
<p>Some observer commands have their own hardware limit:</p>
<ul>
<li>MQTT neighbor-table publishing requires PSRAM. <code>discover.scopes</code> also
requires PSRAM and the FULL MQTT parser; the portable MQTT profile omits it.</li>
<li><code>discover.neighbors</code> does <strong>not</strong> require MQTT or PSRAM.</li>
<li>full NTP connectivity diagnostics are omitted from the portable profile.</li>
</ul>
<h2 id="discovery-invariant">Discovery invariant</h2>
<p><code>discover.neighbors</code> sends the zero-hop node-discovery request used to refresh
the repeater neighbor table. It is available in every repeater build profile,
including portable MQTT, standard, logging, OTA, FULL, and FULL logging builds.</p>
<p>The exact command is:</p>
<pre><code class="language-text">discover.neighbors
</code></pre>
<p>It accepts no options and returns:</p>
<pre><code class="language-text">OK - Discover sent
</code></pre>
<p>Some MQTT room-server targets also expose the command as part of their compiled
neighbor-table feature. It is not a cross-role guarantee: companion, KISS,
sensor, and ordinary room-server firmware use different interfaces or do not
maintain the repeater administrator neighbor table.</p>
<h2 id="feature-dependent-commands">Feature-dependent commands</h2>
<p>Even in a FULL build, a command can be unavailable when its underlying feature
does not exist on that target:</p>
<ul>
<li>WebConfig and the <code>wifi.ssid</code>, <code>wifi.status</code>, <code>wifi.powersave</code>, and <code>wifi.cli</code> command
family require an ESP32 WebConfig build. FULL standalone repeater and
room-server builds support the corresponding WiFi setters and status
commands.</li>
<li>MQTT commands require an MQTT observer target.</li>
<li><code>discover.scopes</code> requires a FULL MQTT build, MQTT neighbor support, and
PSRAM.</li>
<li>GPS and external-sensor commands require their drivers and pins.</li>
<li>Ethernet and bridge commands require the corresponding transport.</li>
<li>LoRa OTA commands require an artifact with OTA enabled.</li>
<li><code>uf2reset</code> applies only to nRF52.</li>
</ul>
<p>When diagnosing an unavailable command, check the role first, then the filename
profile, and finally the target's compiled hardware features.</p>
</article>
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