n><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">payload</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="n"><span class="pre">uint16_t</span></span><span class="w"> </span><span class="n sig-param"><span class="pre">length</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N16HABaseDeviceType13onMqttMessageEPKcPK7uint8_tK8uint16_t" title="Permalink to th