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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">BLE 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/rs232.html" class="sidebar-link">RS232 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" aria-current="page" class="active sidebar-link">Displays</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/dev/use/displays.html#ssd1306-display-heltec-sx127x-and-lilygo®-lora32-boards" class="sidebar-link">SSD1306 Display (Heltec SX127X and LILYGO® LoRa32 boards)</a></li></ul></li><li><a href="/dev/use/gateway.html" class="sidebar-link">System commands (ESP only)</a></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="displays"><a href="#displays" class="header-anchor">#</a> Displays</h1> <h2 id="ssd1306-display-heltec-sx127x-and-lilygo®-lora32-boards"><a href="#ssd1306-display-heltec-sx127x-and-lilygo®-lora32-boards" class="header-anchor">#</a> SSD1306 Display (Heltec SX127X and LILYGO® LoRa32 boards)</h2> <p>Several options are available for the display of information on the SSD1306 display. Some options are exclusive to each other, and when a different option is enabled, the current option is disabled.</p> <p>The current SSD1306 display states are being published to the <code>SSD1306toMQTT</code> topic, e.g.</p> <p><code>{"onstate":true,"brightness":50,"display-flip":true,"idlelogo":true,"log-oled":false,"json-oled":true}</code></p> <h3 id="display-on-off"><a href="#display-on-off" class="header-anchor">#</a> Display ON/OFF</h3> <p>To turn the SSD1306 display on or off.</p> <p>This can be enabled with the compiler directive <code>-DDISPLAY_STATE=true</code>.</p> <p>MQTT Display OFF command:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m {"onstate":false}</code></p> <p>MQTT Display ON command:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m {"onstate":true}</code></p> <h3 id="brightness"><a href="#brightness" class="header-anchor">#</a> Brightness</h3> <p>The display brightness can be set between 0-100%.</p> <p>It is recommended to set a value lower than 100 to extend the life of the OLED display. The default setting is 50.</p> <p>This can be set with the compiler directive <code>-DDISPLAY_BRIGHTNESS=50</code>.</p> <p>or with the runtime command</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m {"brightness":50}</code></p> <h3 id="metric-or-imperial-property-units"><a href="#metric-or-imperial-property-units" class="header-anchor">#</a> Metric or Imperial property units</h3> <p>To have applicable device properties displayed in Imperial units, e.g. °F for temperature.</p> <p>This can be set with the compiler directive <code>-DDISPLAY_METRIC=false</code>.</p> <p>As the display Metric setting is being defined in the WebUI part of OpenMQTTGateway changes need to be sent there with the runtime command</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoWebUI/config -m {"displayMetric":false}</code></p> <h3 id="rotating-the-display-by-180-degrees"><a href="#rotating-the-display-by-180-degrees" class="header-anchor">#</a> Rotating the display by 180 degrees</h3> <p>This can be set with the compiler directive <code>-DDISPLAY_FLIP=false</code>.</p> <p>or with the runtime command</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m {"display-flip":false}</code></p> <h3 id="display-idle-logo"><a href="#display-idle-logo" class="header-anchor">#</a> Display idle Logo</h3> <p>To display the OpenMQTTGateway logo during device display idle time. This reduces the likelihood of burn-in.</p> <p>This can be set with the compiler directive <code>-DDISPLAY_IDLE_LOGO=true</code>.</p> <p>or at runtime with</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m {"idlelogo":true}</code></p> <h3 id="setting-the-log-output"><a href="#setting-the-log-output" class="header-anchor">#</a> Setting the log output</h3> <p>The display of serial log messages to the display can be enabled via compiler directive <code>-DLOG_TO_OLED=true</code> or via MQTT commands.</p> <p>For example if you want to set the serial log to OLED</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"log-oled":true}'</code></p> <p>you can also revert it back with</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"log-oled":false}'</code></p> <p>The log level of the messages displayed is Errors and Warnings, and this can only be changed via the compiler directive <code>-DLOG_LEVEL_OLED=LOG_LEVEL_NOTICE</code>.</p> <h3 id="displaying-module-json-messages-default"><a href="#displaying-module-json-messages-default" class="header-anchor">#</a> Displaying Module json messages (default)</h3> <p>The display of messages from various modules is also supported. Currently supported modules include <code>ZgatewayRTL_433</code>, <code>ZgatewayBT</code> and <code>ZsensorBME280</code>.</p> <p>This can be enabled with the compiler directive <code>-DJSON_TO_OLED=true</code>.</p> <p>You can also change it by MQTT. For example if you want to display module json messages:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"json-oled":true}'</code></p> <p>And to disable the display of module json messages:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"display-json":false}'</code></p> <h3 id="store-the-current-display-configuration-in-the-gateway"><a href="#store-the-current-display-configuration-in-the-gateway" class="header-anchor">#</a> Store the current display configuration in the gateway</h3> <p>To store the running display configuration into non-volatile storage on the gateway use the following command. This assures persistence across restarts.</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"save":true}'</code></p> <p>At any time, you can reload the stored configuration with the command:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"load":true}'</code></p> <p>If you want to erase the stored configuration, use the command:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"erase":true}'</code></p> <p>Note that this will not change the running configuration, it only ensures that the default configuration is used at next startup.</p> <p>If you want to load the default configuration use the command:</p> <p><code>mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoSSD1306/config -m '{"init":true}'</code></p> <p>Note that this will not change the stored configuration, <code>erase</code> or <code>save</code> is still needed to overwrite the saved configuration.</p></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/1technophile/OpenMQTTGateway/edit/development/docs/use/displays.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">12/12/2023, 8:03:11 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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