SmartThings light brightness not changing

[andrewsayre]

Home Assistant release with the issue: 0.87.x

Last working Home Assistant release (if known): N/A

Operating environment (Hass.io/Docker/Windows/etc.): All

Component/platform: smartthings.light

Description of problem:
Some users have reported an inability to set/change the brightness of certain lights in HASS using the SmartThings integration. When the user changes the brightness, no error is logged in HASS, but the brightness of the light does not change. At the same time, an error will be logged in the SmartThings Groovy IDE similar to the following:

error groovy.lang.MissingMethodException: No signature of method: script_dth_72d5f7ef4029c8daa8441f2deabebed486fb2938dd86668db854710c0edb4af3.setLevel() is applicable for argument types: (java.lang.Integer, java.lang.Integer) values: [64, 0]

The problem is related to devices that use the following Device Type Handlers (DTH):

• GE Link Bulb
• Sylvania Ultra iQ
• ZigBee Accessory Dimmer
• ZigBee Dimmer Power
• ZigBee Dimmer with Motion Sensor
• ZigBee Dimmer
• ZLL Dimmer Bulb
• Z-Wave Metering Dimmer

Additional information:
The root cause of the problem is that the affected DTHs do not properly implement the switchLevel capability. Specifically, they do not have a setlevel overload that accepts 2 parameters, which is expected. An issue has been opened with SmartThings: SmartThingsCommunity/SmartThingsPublic#3986.

Based on the outcome of the issue, an enhancement can be implemented in component dependency pysmartthings to maintain a list of non-confirming DTHs and invoke setLevel with a single parameter.

Please report additional DTHs that experience this issue.

Still experiencing issues? Here's the workaround:

A temporarily workaround is as follows (performed in the SmartThings Groovy IDE):

1. Create a new device type handler from the affected DTH
2. Find the method def setLevel(level) method and modify it to: def setLevel(level, rate=0)
3. Save and self-publish the new DTH
4. For each affected device, change the DTH to the one newly created.

[asmegin]

This fix worked for me although I noted the original value in my DTH was def setLevel(value) and not def setLevel(level).

def setLevel(value, rate=0) worked with my Keen Smart Vents DTHs.

Thank you!

[andrewsayre]

Parent issue resolved!

[damien67]

This fix worked for me although I noted the original value in my DTH was def setLevel(value) and not def setLevel(level).

def setLevel(value, rate=0) worked with my Keen Smart Vents DTHs.

Thank you!

Thanks for this quick and dirty solution, worked perfectly for my custom device handler controlling ESP8266s flashed with WLED.