OK, so here is the code that seems to be working. I have some issues with Automations that can’t find the child device. I have no clue why, but I think it is a bug in the SmaretThings app rather than in my DH (as Automations shows a previous version of the child device than the one that is installed).
Note that there are two sets of code below, the “Zigbee Multi Dimmer” (the parent) and the “Child Switch Dimmer” (the child device). Both of them needs to be created.
I have based these on multiple other DH, but I guess most of it comes from the original Multi Switch, Dimmer, and Child Switch devices on the SmartThings GitHub.
So if anyone is interesting to try these, to find issues, and perhaps even solve issues, please do. Anyway, these DH are for the Lonsonho 2-Gang Tuya Dimmers (QS-Zigbee-D02-TRIAC-2C-LN) that looks like this:
///////////////////////// // Zigbee Multi Dimmer ///////////////////////// import physicalgraph.zigbee.zcl.DataType metadata { definition (name: "ZigBee Multi Dimmer", namespace: "jhb", author: "jhb", ocfDeviceType: "oic.d.light", runLocally: false, minHubCoreVersion: '000.019.00012', executeCommandsLocally: true, genericHandler: "Zigbee") { capability "Actuator" capability "Configuration" capability "Refresh" capability "Switch" capability "Switch Level" capability "Health Check" capability "Light" command "childOn", ["string"] command "childOff", ["string"] command "childSetLevel", ["string", "string"] // Generic fingerprint profileId: "0104", deviceId: "0101", inClusters: "0006, 0008", deviceJoinName: "Light" //Generic Dimmable Light } tiles(scale: 2) { multiAttributeTile(name:"switch", type: "lighting", width: 6, height: 4, canChangeIcon: true){ tileAttribute ("device.switch", key: "PRIMARY_CONTROL") { attributeState "on", label:'${name}', action:"switch.off", icon:"st.switches.light.on", backgroundColor:"#00A0DC", nextState:"turningOff" attributeState "off", label:'${name}', action:"switch.on", icon:"st.switches.light.off", backgroundColor:"#ffffff", nextState:"turningOn" attributeState "turningOn", label:'${name}', action:"switch.off", icon:"st.switches.light.on", backgroundColor:"#00A0DC", nextState:"turningOff" attributeState "turningOff", label:'${name}', action:"switch.on", icon:"st.switches.light.off", backgroundColor:"#ffffff", nextState:"turningOn" } tileAttribute ("device.level", key: "SLIDER_CONTROL") { attributeState "level", action:"switch level.setLevel" } } standardTile("refresh", "device.refresh", inactiveLabel: false, decoration: "flat", width: 2, height: 2) { state "default", label:"", action:"refresh.refresh", icon:"st.secondary.refresh" } main "switch" details(["switch", "refresh"]) } } def installed() { createChildDevices() updateDataValue("onOff", "catchall") refresh() } // Parse incoming device messages to generate events def parse(String description) { Map eventMap = zigbee.getEvent(description) Map eventDescMap = zigbee.parseDescriptionAsMap(description) log.debug "description is $description" if (eventMap) { if (eventDescMap && eventDescMap?.attrId == "0000") {//0x0000 : OnOff attributeId if (eventDescMap?.sourceEndpoint == "01" || eventDescMap?.endpoint == "01") { sendEvent(eventMap) } else { def childDevice = childDevices.find { it.deviceNetworkId == "$device.deviceNetworkId:${eventDescMap.sourceEndpoint}" || it.deviceNetworkId == "$device.deviceNetworkId:${eventDescMap.endpoint}" } if (childDevice) { childDevice.sendEvent(eventMap) } else { log.debug "Child device: $device.deviceNetworkId:${eventDescMap.sourceEndpoint} was not found" } } } } else { def descMap = zigbee.parseDescriptionAsMap(description) if (descMap && descMap.clusterInt == 0x0006 && descMap.commandInt == 0x07) { if (descMap.data[0] == "00") { log.debug "ON/OFF REPORTING CONFIG RESPONSE: " + cluster sendEvent(name: "checkInterval", value: 60 * 12, displayed: false, data: [protocol: "zigbee", hubHardwareId: device.hub.hardwareID]) } else { log.warn "ON/OFF REPORTING CONFIG FAILED- error code:${cluster.data[0]}" } } else { log.warn "DID NOT PARSE MESSAGE for description : $description" log.debug "${descMap}" } } } private getChildEndpoint(String dni) { dni.split(":")[-1] as Integer } def off() { log.debug("off") zigbee.off() } def on() { log.debug("on") zigbee.on() } def childOn(String dni) { def childEndpoint = getChildEndpoint(dni) log.debug(" child on ${dni} ${childEndpoint} ") zigbee.command(zigbee.ONOFF_CLUSTER, 0x01, "", [destEndpoint: childEndpoint]) } def childOff(String dni) { def childEndpoint = getChildEndpoint(dni) log.debug(" child off ${dni} ${ childEndpoint} ") zigbee.command(zigbee.ONOFF_CLUSTER, 0x00, "", [destEndpoint: childEndpoint]) } def setOnLevel (endpoint, level) { log.debug "setOnLevel($endpoint, $level)" zigbee.writeAttribute(zigbee.LEVEL_CONTROL_CLUSTER, 0x0011, DataType.UINT8, level, [destEndpoint: endpoint]) } def moveToLevel (endpoint, level, transitionTime) { log.debug "moveToLevel($endpoint, $level, $transitionTime)" def p1 = DataType.pack(level, DataType.UINT8, false) def p2 = DataType.pack(transitionTime, DataType.UINT16, false) def dataString = [p1, p2].join(" ") //"st cmd 0x${device.deviceNetworkId} ${endpointId} 8 4 {${scaledLevel} ${transitionTime}}" zigbee.command(zigbee.LEVEL_CONTROL_CLUSTER, 0x0000, dataString, [destEndpoint: endpoint]) + zigbee.command(zigbee.LEVEL_CONTROL_CLUSTER, 0x0004, dataString, [destEndpoint: endpoint]) } def childSetLevel (String dni, Integer value) { def endpoint = getChildEndpoint(dni) def rate = 5; log.debug "setLevel($endpoint, $value, $rate)" def level = Math.round(Math.floor(value * 2.54)) setOnLevel(endpoint, level) + moveToLevel(endpoint, level, rate) } def setLevel(value, rate = null) { def additionalCmds = [] zigbee.setLevel(value) + additionalCmds } /** * PING is used by Device-Watch in attempt to reach the Device * */ def ping() { return zigbee.onOffRefresh() } def refresh() { zigbee.onOffRefresh() + zigbee.levelRefresh() } private void createChildDevices() { if (!childDevices) { def x = getChildCount() log.debug(" childCount ${x}") for (i in 2..x) { addChildDevice("Child Switch Dimmer", "${device.deviceNetworkId}:0${i}", device.hubId, [completedSetup: true, label: "${device.displayName[0..-2]}${i}", isComponent: false]) log.debug(" Device ${i} created") } } } def updated() { log.debug "updated()" updateDataValue("onOff", "catchall") for (child in childDevices) { if (!child.deviceNetworkId.startsWith(device.deviceNetworkId) || //parent DNI has changed after rejoin !child.deviceNetworkId.split(':')[-1].startsWith('0')) { child.setDeviceNetworkId("${device.deviceNetworkId}:0${getChildEndpoint(child.deviceNetworkId)}") } } refresh() } def configureHealthCheck() { Integer hcIntervalMinutes = 12 if (!state.hasConfiguredHealthCheck) { log.debug "Configuring Health Check, Reporting" unschedule("healthPoll") runEvery5Minutes("healthPoll") def healthEvent = [name: "checkInterval", value: hcIntervalMinutes * 60, displayed: false, data: [protocol: "zigbee", hubHardwareId: device.hub.hardwareID]] // Device-Watch allows 2 check-in misses from device sendEvent(healthEvent) childDevices.each { it.sendEvent(healthEvent) } state.hasConfiguredHealthCheck = true } } def configure() { log.debug "configure()" configureHealthCheck() def cmds = zigbee.onOffConfig(0, 300) + zigbee.levelConfig() def x = getChildCount() for (i in 2..x) { cmds += zigbee.configureReporting(zigbee.ONOFF_CLUSTER, 0x0000, 0x10, 0, 120, null, [destEndpoint: i]) } cmds += refresh() return cmds } private getChildCount() { return 2 } ///////////////////////// // Child Switch Dimmer ///////////////////////// metadata { definition(name: "Child Switch Dimmer", namespace: "jhb", author: "jhb", ocfDeviceType: "oic.d.light", runLocally: false, minHubCoreVersion: '000.019.00012', executeCommandsLocally: true, genericHandler: "Zigbee") { capability "Actuator" capability "Refresh" capability "Switch" capability "Switch Level" capability "Light" } tiles(scale: 2) { multiAttributeTile(name:"switch", type: "lighting", width: 6, height: 4, canChangeIcon: true){ tileAttribute ("device.switch", key: "PRIMARY_CONTROL") { attributeState "on", label:'${name}', action:"switch.off", icon:"st.switches.light.on", backgroundColor:"#00A0DC", nextState:"turningOff" attributeState "off", label:'${name}', action:"switch.on", icon:"st.switches.light.off", backgroundColor:"#ffffff", nextState:"turningOn" attributeState "turningOn", label:'${name}', action:"switch.off", icon:"st.switches.light.on", backgroundColor:"#00A0DC", nextState:"turningOff" attributeState "turningOff", label:'${name}', action:"switch.on", icon:"st.switches.light.off", backgroundColor:"#ffffff", nextState:"turningOn" } tileAttribute ("device.level", key: "SLIDER_CONTROL") { attributeState "level", action:"switch level.setLevel" } } standardTile("refresh", "device.refresh", inactiveLabel: false, decoration: "flat", width: 2, height: 2) { state "default", label:"", action:"refresh.refresh", icon:"st.secondary.refresh" } main "switch" details(["switch", "refresh"]) } } def installed() { sendEvent(name: "checkInterval", value: 30 * 60, displayed: false, data: [protocol: "zigbee"]) log.debug("installed") } // Parse incoming device messages to generate events def parse(String description) { log.debug("parse") } def ping() { log.debug("ping") } def configure() { log.debug("configure") } def setLevel(value, rate = null) { log.debug("level ${value} ") parent.childSetLevel(device.deviceNetworkId, value) } void on() { log.debug("Local child on ${device.deviceNetworkId}") parent.childOn(device.deviceNetworkId) } void off() { log.debug("Local child off ${device.deviceNetworkId}") parent.childOff(device.deviceNetworkId) } void refresh() { log.debug("Local child refresh ${device.deviceNetworkId}") }