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Mobile App
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OpenMQTTGateway
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Gateway
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Core
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Decoder
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Web Parser
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Compatible devices
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Community
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Shop
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Sponsor 🤍
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GitHub
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IoT
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Theengs Plug
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Theengs Bridge
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Software
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Mobile App
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OpenMQTTGateway
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Gateway
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Core
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Decoder
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Web Parser
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Compatible devices
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Community
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Shop
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Sponsor 🤍
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GitHub
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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><a href="/dev/" aria-current="page" class="sidebar-link">0 - What is it for 🏠</a></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>1 - Prerequisites🧭</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>2 - Set it up 🔨</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>3 - Upload ➡️</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>4 - Use ✈️</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/dev/use/rf.html" class="sidebar-link">RF gateways (RTL_433/RCSwitch/RF/RF2)</a></li><li><a href="/dev/use/ble.html" class="sidebar-link">Bluetooth ESP32 gateway</a></li><li><a href="/dev/use/ir.html" class="sidebar-link">Infrared gateway</a></li><li><a href="/dev/use/lora.html" class="sidebar-link">LoRa gateway</a></li><li><a href="/dev/use/gsm.html" class="sidebar-link">GSM 2G gateway</a></li><li><a href="/dev/use/serial.html" class="sidebar-link">RS232/Serial gateway</a></li><li><a href="/dev/use/rfm69.html" class="sidebar-link">RFM69 gateway</a></li><li><a href="/dev/use/sensors.html" class="sidebar-link">Sensors</a></li><li><a href="/dev/use/actuators.html" class="sidebar-link">Actuators</a></li><li><a href="/dev/use/boards.html" class="sidebar-link">Boards</a></li><li><a href="/dev/use/displays.html" class="sidebar-link">Displays</a></li><li><a href="/dev/use/gateway.html" aria-current="page" class="active sidebar-link">System commands (ESP only)</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#restart-the-esp" class="sidebar-link">Restart the ESP</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#erase-the-esp-settings" class="sidebar-link">Erase the ESP settings</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#retrieve-current-status-of-the-esp" class="sidebar-link">Retrieve current status of the ESP</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#auto-discovery" class="sidebar-link">Auto discovery</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#activate-offline-mode" class="sidebar-link">Activate Offline mode</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#change-the-wifi-credentials" class="sidebar-link">Change the WiFi credentials</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#change-the-gateway-password" class="sidebar-link">Change the gateway password</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#change-the-mqtt-broker-credentials" class="sidebar-link">Change the MQTT broker credentials</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#change-the-mqtt-main-topic-discovery-prefix-and-or-gateway-name" class="sidebar-link">Change the MQTT main topic, discovery prefix, and or gateway name</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#switching-brokers-and-using-signed-and-client-certificates" class="sidebar-link">Switching brokers and using signed and client certificates</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#saving-loading-connection-parameters-certificates-at-runtime" class="sidebar-link">Saving/Loading connection parameters/certificates at runtime</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#mqtt" class="sidebar-link">MQTT</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#serial" class="sidebar-link">Serial</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#change-the-led-indicator-brightness" class="sidebar-link">Change the LED indicator brightness</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#understanding-led-indicators-in-openmqttgateway" class="sidebar-link">Understanding LED Indicators in OpenMQTTGateway</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#led-color-guide" class="sidebar-link">LED Color Guide</a></li><li class="sidebar-sub-header"><a href="/dev/use/gateway.html#understanding-gateway-states" class="sidebar-link">Understanding Gateway States</a></li></ul></li><li><a href="/dev/use/webui.html" class="sidebar-link">WebUI</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>5 - Integrate 🎉</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>6 - Participate 💻</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="system-commands-esp-only"><a href="#system-commands-esp-only" class="header-anchor">#</a> System commands (ESP only)</h1> <h2 id="restart-the-esp"><a href="#restart-the-esp" class="header-anchor">#</a> Restart the ESP</h2> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"cmd":"restart"}'</code></p> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>With Home Assistant, this command is directly available through MQTT auto discovery as a switch into the HASS OpenMQTTGateway device entities list.</p></div> <h2 id="erase-the-esp-settings"><a href="#erase-the-esp-settings" class="header-anchor">#</a> Erase the ESP settings</h2> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"cmd":"erase"}'</code></p> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>With Home Assistant, this command is directly available through MQTT auto discovery as a switch into the HASS OpenMQTTGateway device entities list.</p></div> <h2 id="retrieve-current-status-of-the-esp"><a href="#retrieve-current-status-of-the-esp" class="header-anchor">#</a> Retrieve current status of the ESP</h2> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"cmd":"status"}'</code></p> <h2 id="auto-discovery"><a href="#auto-discovery" class="header-anchor">#</a> Auto discovery</h2> <p>You can deactivate the MQTT auto-discovery function, which enables you to create devices/entities with the Home Assistant convention automatically. This function is set to <code>true</code> at startup for 30 minutes unless you deactivate it.</p> <h3 id="deactivate"><a href="#deactivate" class="header-anchor">#</a> Deactivate</h3> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"disc":false}'</code></p> <h3 id="activate"><a href="#activate" class="header-anchor">#</a> Activate</h3> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"disc":true}'</code></p> <p>If you want the settings to be kept upon gateway restart, you can save the state by adding <code>"save":true</code> (ESP32 only).
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<code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"disc":false, "save":true}'</code></p> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>Auto discovery is enabled by default on release binaries and platformio.</p></div> <h2 id="activate-offline-mode"><a href="#activate-offline-mode" class="header-anchor">#</a> Activate Offline mode</h2> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"offline":true,"save":true}'</code></p> <h2 id="change-the-wifi-credentials"><a href="#change-the-wifi-credentials" class="header-anchor">#</a> Change the WiFi credentials</h2> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"wifi_ssid":"ssid", "wifi_pass":"password"}'</code></p> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>If the new connection fails the gateway will fallback to the previous connection.</p></div> <h2 id="change-the-gateway-password"><a href="#change-the-gateway-password" class="header-anchor">#</a> Change the gateway password</h2> <p>The password must be 8 characters minimum.</p> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"gw_pass":"12345678"}'</code></p> <h2 id="change-the-mqtt-broker-credentials"><a href="#change-the-mqtt-broker-credentials" class="header-anchor">#</a> Change the MQTT broker credentials</h2> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m
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|
'{
|
|
"mqtt_user": "user_name",
|
|
"mqtt_pass": "password",
|
|
"mqtt_server": "host",
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"mqtt_port": "port",
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"mqtt_validate": false,
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|
"mqtt_secure": false
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}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br></div></div><div class="custom-block tip"><p class="custom-block-title">INFO</p> <p>By default this function is not available on the pre built binary of RFBridge, in order to have less code size and enable to have OTA update working properly. So as to enable it remove from the rf bridge env:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>build_flags = '-UMQTTsetMQTT'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></div> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>If the new connection fails the gateway will fallback to the previous connection.</p></div> <h2 id="change-the-mqtt-main-topic-discovery-prefix-and-or-gateway-name"><a href="#change-the-mqtt-main-topic-discovery-prefix-and-or-gateway-name" class="header-anchor">#</a> Change the MQTT main topic, discovery prefix, and or gateway name</h2> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m
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'{
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"mqtt_topic": "topic/",
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"discovery_prefix": "prefix",
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"gateway_name": "name"
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}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br></div></div><div class="custom-block tip"><p class="custom-block-title">INFO</p> <p>This will change the subscribed and published mqtt_topic/gateway_name that the gateway uses. No parameters are mandatory, the current topic or gateway name will be used if not supplied.</p></div> <h2 id="switching-brokers-and-using-signed-and-client-certificates"><a href="#switching-brokers-and-using-signed-and-client-certificates" class="header-anchor">#</a> Switching brokers and using signed and client certificates</h2> <p>In the <code>user_config.h</code> file it is possible to specify multiple MQTT brokers and client certificates.
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Additionally, support for multiple brokers and client certificates has been added. To use this, it is required that the server certificate, client certificate, and client key are provided as their own constant string value as demonstrated in the file.<br>
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To add more than one broker and switch between them it is necessary to provide all of the relevant certificates/keys and add their respective variable names in the <code>cnt_parameters_array</code> structure, as shown in <code>user_config.h</code>..</p> <p>To switch between these connections with an MQTT command message, the format is as follows:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m
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'{
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|
"mqtt_user": "user",
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|
"mqtt_pass": "password",
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"mqtt_server": "host",
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"mqtt_port": "port",
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"mqtt_secure": true,
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"mqtt_validate": true,
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"cnt_index":1,
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"save_cnt": true
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}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br></div></div><div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>The <code>cnt_index</code> value corresponds to the 0 to 2 index of the <code>cnt_parameters_array</code> in <code>user_config.h</code>.
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0 being the default index, containing the onboarding parameters.</p></div> <p>To read the connection parameters:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m
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'{
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"cnt_index":1,
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"read_cnt": true
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}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>To test a connection change without saving:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m
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'{
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"cnt_index":1,
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"test_cnt": true
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}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>If the client can't connect to the MQTT broker corresponding to the current <code>cnt_index</code>, it will increment the index to the next valid connection set and restart with it.</p></div> <h2 id="saving-loading-connection-parameters-certificates-at-runtime"><a href="#saving-loading-connection-parameters-certificates-at-runtime" class="header-anchor">#</a> Saving/Loading connection parameters/certificates at runtime</h2> <p>This chapter details the process for managing certificates/connections parameters used for secure MQTT communication with OpenMQTTGateway</p> <h3 id="storing-and-loading-certificates"><a href="#storing-and-loading-certificates" class="header-anchor">#</a> Storing and Loading Certificates</h3> <ul><li>Flash Memory Storage:
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Certificates can be saved to the flash memory using specific indices. Valid indices for storing certificates are 1 and 2, as 0 is reserved for the default certificate.</li> <li>RAM Memory Loading:
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Certificates can be loaded from RAM, where valid indices range from 0 to 2. The device publishes a hash of the certificate to the broker to verify its identity. If the connection using the current certificate fails, the device will revert to the previous certificate.</li></ul> <h3 id="use-case-changing-a-group-of-certificates"><a href="#use-case-changing-a-group-of-certificates" class="header-anchor">#</a> Use Case: Changing a Group of Certificates</h3> <p>When updating certificates, follow these steps to ensure that the new certificates are correctly loaded and used:</p> <ol><li>Push Certificates via MQTT:
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Send the new certificates one by one through MQTT, using indices 1 or 2. Replace newline characters (\n) in the certificates with spaces.</li></ol> <div class="language-json line-numbers-mode"><pre class="language-json"><code><span class="token punctuation">{</span>
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<span class="token property">"cnt_index"</span><span class="token operator">:</span> <span class="token number">1</span><span class="token punctuation">,</span>
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<span class="token property">"mqtt_server_cert"</span><span class="token operator">:</span> <span class="token string">"-----BEGIN CERTIFICATE----- MIIDQTCC----END CERTIFICATE-----"</span>
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<span class="token punctuation">}</span>
|
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><p>Accepted certificates are:</p> <ul><li><code>mqtt_server_cert</code></li> <li><code>mqtt_client_cert</code></li> <li><code>mqtt_client_key</code></li> <li><code>ota_server_cert</code></li></ul> <ol start="2"><li>Verify Certificates in RAM:
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After pushing the certificates, verify that they have been correctly loaded into RAM.</li></ol> <div class="language-json line-numbers-mode"><pre class="language-json"><code><span class="token punctuation">{</span>
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|
<span class="token property">"cnt_index"</span><span class="token operator">:</span> <span class="token number">1</span><span class="token punctuation">,</span>
|
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<span class="token property">"read_cnt"</span><span class="token operator">:</span> <span class="token boolean">true</span>
|
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<span class="token punctuation">}</span>
|
|
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ol start="3"><li>Test and Save Certificates:
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Once verification is complete, test the connection using the new certificates. If the connection is successful, send the command to save the certificates to flash.</li></ol> <div class="language-json line-numbers-mode"><pre class="language-json"><code><span class="token punctuation">{</span>
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|
<span class="token property">"cnt_index"</span><span class="token operator">:</span> <span class="token number">1</span><span class="token punctuation">,</span>
|
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<span class="token property">"save_cnt"</span><span class="token operator">:</span> <span class="token boolean">true</span>
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<span class="token punctuation">}</span>
|
|
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ol start="4"><li><p>Broker Connection:
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The broker will attempt to use the newly received certificates for the connection.</p></li> <li><p>Successful Connection Handling:
|
|
If the connection is successful, the certificates are permanently stored in the flash memory at the specified index.</p></li> <li><p>Handling Connection Failures:
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|
If the connection fails, the device will revert to the previously used certificate index, and the new certificates will not be saved.</p></li></ol> <h1 id="firmware-update-from-mqtt-esp-only"><a href="#firmware-update-from-mqtt-esp-only" class="header-anchor">#</a> Firmware update from MQTT (ESP only)</h1> <p>When the gateway used is from a standard ESP32 environment <a href="https://github.com/1technophile/OpenMQTTGateway/blob/development/environments.ini" target="_blank" rel="noopener noreferrer">listed and defined here<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>, it can be updated through a simple MQTT command:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway_ESP32_BLE/commands/MQTTtoSYS/firmware_update" -m '{
|
|
"version": "latest"
|
|
}'
|
|
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><p>This would download the latest version firmware binary from Github and install it.
|
|
It can be used with version 1.5.0 and above.</p> <p>Note that this update option is also autodiscovered through Home Assistant convention, you can update directly from the device page with 2 clicks.</p> <p><img src="/dev/assets/img/OpenMQTTGateway-OTA-Update-Home-Assistant.1b857c45.png" alt="Home Assistant OTA Update"></p> <p>You can also indicate the target version to update:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway_ESP32_BLE/commands/MQTTtoSYS/firmware_update" -m '{
|
|
"version": "v1.2.0"
|
|
}'
|
|
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><p>OpenMQTTGateway checks at start and every hour if an update is available.</p> <p>Alternatively if you want to choose the update URL you can use the command below (ESP32 and ESP8266):</p> <p>Without certificate, in this case the gateway will use the ota_server_cert certificate defined in default_ota_cert.h</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway_ESP32_BLE/commands/MQTTtoSYS/firmware_update" -m '{
|
|
"version": "test",
|
|
"password": "OTAPASSWORD",
|
|
"url": "https://github.com/1technophile/OpenMQTTGateway/releases/download/v0.9.12/esp32dev-ble-firmware.bin"
|
|
}'
|
|
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>With certificate (replace the \n in the certificate by spaces to publish it easily):</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway_ESP32_BLE/commands/MQTTtoSYS/firmware_update" -m '{
|
|
"version": "test",
|
|
"password": "OTAPASSWORD",
|
|
"url": "https://github.com/1technophile/OpenMQTTGateway/releases/download/v0.9.12/esp32dev-ble-firmware.bin",
|
|
"ota_server_cert": "-----BEGIN CERTIFICATE----- MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4= -----END CERTIFICATE-----"}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>A bash script is available <a href="ota_command_cert.zip">here also</a> to simplify the use of the <code>server_cert</code> parameter.</p> <p>Alternatively the OTA certificate can also be saved with the cnt_index for future use:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mosquitto_pub -t "home/OpenMQTTGateway_ESP32_BLE/commands/MQTTtoSYS/config" -m '{
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"cnt_index": 1,
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"save_cnt":true,
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"ota_server_cert": "-----BEGIN CERTIFICATE----- MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4= -----END CERTIFICATE-----"
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}'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>The other connection parameters corresponding to the index need to be valid for the save function to work. This command will switch to connection parameters of index 1.</p> <p>To enable this functionality, <code>MQTT_HTTPS_FW_UPDATE</code> will need to be defined or the line that defines in in user_config.h will need to be uncommented.</p> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>If using an unsecure MQTT broker it is <strong>highly recommended</strong> to disable the password checking by setting the macro <code>MQTT_HTTPS_FW_UPDATE_USE_PASSWORD</code> to 0 (default is 1 (enabled)), otherwise a clear text password may be sent over the network.</p> <p>The <code>server_cert</code> parameter is optional. If the update server has changed or certificate updated or not set in <code>user_config.h</code> then you can provide the certificate here.</p></div> <div class="custom-block warning"><p class="custom-block-title">WARNING</p> <p>The pre-built binaries for <strong>rfbridge</strong> and <strong>avatto-bakeey-ir</strong> have the above WiFi and MQTT broker credentials and the Firmware update via MQTT options disabled. This is due to the restricted available flash, so as to still be able to use OTA firmware updates for these boards.</p></div> <h1 id="communication-layers"><a href="#communication-layers" class="header-anchor">#</a> Communication layers</h1> <h2 id="mqtt"><a href="#mqtt" class="header-anchor">#</a> MQTT</h2> <p>OpenMQTTGateway uses per default MQTT on top of Ethernet or WiFi for communicating (default: true).
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The MQTT communication can be deactivated with the following command:
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<code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"mqtt":false}'</code>
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Once activated the MQTT API is no longer accessible</p> <h2 id="serial"><a href="#serial" class="header-anchor">#</a> Serial</h2> <p>Added to MQTT, OpenMQTTGateway cans use Serial to transmit or receive json data (default: false):
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<code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"serial":true}'</code></p> <p>The build need to have the following macro:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code> '-DZgatewaySERIAL="SERIAL"'
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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>An example scenario is a slave offline ESP32 dedicated to RF decoding connected to another online ESP32 through Serial.</p> <h1 id="indicators"><a href="#indicators" class="header-anchor">#</a> Indicators</h1> <h2 id="change-the-led-indicator-brightness"><a href="#change-the-led-indicator-brightness" class="header-anchor">#</a> Change the LED indicator brightness</h2> <p>Minimum: 0, Maximum: 255, Default defined by DEFAULT_ADJ_BRIGHTNESS</p> <p><code>mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoSYS/config" -m '{"brightness":200}'</code></p> <h2 id="understanding-led-indicators-in-openmqttgateway"><a href="#understanding-led-indicators-in-openmqttgateway" class="header-anchor">#</a> Understanding LED Indicators in OpenMQTTGateway</h2> <p>With boards having one or several RGB Led, OpenMQTTGateway uses them to provide visual feedback about its current state. This guide will help you interpret these LED signals to understand what's happening with your gateway.</p> <h2 id="led-color-guide"><a href="#led-color-guide" class="header-anchor">#</a> LED Color Guide</h2> <p>OpenMQTTGateway uses a variety of colors to indicate different states:</p> <p>Green (0x00FF00): Indicates normal operation or successful connections
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Blue (0x0000FF): Shows processing or offline status
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Orange (0xFFA500): Indicates waiting states or minor issues
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Yellow (0xFFFF00): Used during the onboarding process
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Red (0xFF0000): Signals an error state
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Magenta (0xFF00FF): Indicates local Over-The-Air (OTA) updates
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Purple (0x8000FF): Shows remote OTA updates are in progress</p> <h2 id="understanding-gateway-states"><a href="#understanding-gateway-states" class="header-anchor">#</a> Understanding Gateway States</h2> <p>Here's what different LED behaviors mean:</p> <h3 id="power-on"><a href="#power-on" class="header-anchor">#</a> Power On</h3> <p>Color: Green
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Behavior: Solid light
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Meaning: The gateway is powered and operational</p> <h3 id="processing"><a href="#processing" class="header-anchor">#</a> Processing</h3> <p>Color: Blue
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Behavior: Blinking (3 times)
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Meaning: The gateway is processing data</p> <h3 id="waiting-for-onboarding"><a href="#waiting-for-onboarding" class="header-anchor">#</a> Waiting for Onboarding</h3> <p>Color: Orange
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Behavior: Solid light
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Meaning: The gateway is ready to be set up</p> <h3 id="onboarding-in-progress"><a href="#onboarding-in-progress" class="header-anchor">#</a> Onboarding in Progress</h3> <p>Color: Yellow
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Behavior: Solid light
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Meaning: The gateway is being configured</p> <h3 id="network-connected"><a href="#network-connected" class="header-anchor">#</a> Network Connected</h3> <p>Color: Green
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Behavior: Solid light
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Meaning: Successfully connected to the network</p> <h3 id="network-disconnected"><a href="#network-disconnected" class="header-anchor">#</a> Network Disconnected</h3> <p>Color: Orange
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Behavior: Blinking
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Meaning: Lost connection to the network</p> <h3 id="mqtt-broker-connected"><a href="#mqtt-broker-connected" class="header-anchor">#</a> MQTT Broker Connected</h3> <p>Color: Green
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Behavior: Solid light
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Meaning: Successfully connected to the MQTT broker</p> <h3 id="mqtt-broker-disconnected"><a href="#mqtt-broker-disconnected" class="header-anchor">#</a> MQTT Broker Disconnected</h3> <p>Color: Orange
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Behavior: Blinking
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Meaning: Lost connection to the MQTT broker</p> <h3 id="offline"><a href="#offline" class="header-anchor">#</a> Offline</h3> <p>Color: Blue
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Behavior: Blinking
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Meaning: The gateway is offline</p> <h3 id="local-ota-update"><a href="#local-ota-update" class="header-anchor">#</a> Local OTA Update</h3> <p>Color: Magenta
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Behavior: Blinking
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Meaning: A local Over-The-Air update is in progress</p> <h3 id="remote-ota-update"><a href="#remote-ota-update" class="header-anchor">#</a> Remote OTA Update</h3> <p>Color: Purple
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Behavior: Blinking
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Meaning: A remote Over-The-Air update is in progress</p> <h3 id="error"><a href="#error" class="header-anchor">#</a> Error</h3> <p>Color: Red
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Behavior: Blinking (3 times)
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Meaning: An error has occurred</p> <h3 id="actuator-on-off"><a href="#actuator-on-off" class="header-anchor">#</a> Actuator On/Off</h3> <p>Color: Green
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Behavior: Depends on actuator state
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Meaning: Indicates the state of a connected actuator</p></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/1technophile/OpenMQTTGateway/edit/development/docs/use/gateway.md" target="_blank" rel="noopener noreferrer">Edit this page</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">12/7/2025, 4:27:01 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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