Merge pull request #2125 from AldaronLau/better-match-default-handlers-behavior

Matter switch and zigbee fan switchLevel: Match default handlers behavior around small values

Author: varzac

drivers/SmartThings/matter-switch/src/switch_handlers/attribute_handlers.lua

@@ -38,7 +38,10 @@ end
 
 function AttributeHandlers.level_control_current_level_handler(driver, device, ib, response)
   if ib.data.value ~= nil then
-    local level = math.floor((ib.data.value / 254.0 * 100) + 0.5)
+    local level = ib.data.value
+    if level > 0 then
+      level = math.max(1, st_utils.round(level / 254.0 * 100))
+    end
     device:emit_event_for_endpoint(ib.endpoint_id, capabilities.switchLevel.level(level))
     if type(device.register_native_capability_attr_handler) == "function" then
       device:register_native_capability_attr_handler("switchLevel", "level")
@@ -535,4 +538,4 @@ function AttributeHandlers.percent_current_handler(driver, device, ib, response)
   device:emit_event_for_endpoint(ib.endpoint_id, capabilities.fanSpeedPercent.percent(ib.data.value))
 end
 
-return AttributeHandlers
+return AttributeHandlers

drivers/SmartThings/zigbee-fan/src/fan-light/init.lua

@@ -74,7 +74,11 @@ local function zb_fan_control_handler(driver, device, value, zb_rx)
 end
 
 local function zb_level_handler(driver, device, value, zb_rx)
-  local evt = capabilities.switchLevel.level(math.floor((value.value / 254.0 * 100) + 0.5))
+  local level = value.value
+  if level > 0 then
+    level = math.max(1, math.floor((level / 254.0 * 100) + 0.5))
+  end
+  local evt = capabilities.switchLevel.level(level)
   device:emit_component_event(device.profile.components.light, evt)
 end