SmartThings Community

Unable to Parse (Zigbee)


(Jack) #1

Hi,

I have a ZigBee device that supports the Analog Value Cluster, and whenever my Smartthings hub writes to the “Present Value” attribute, I always get an unable to parse warning.

Why is this so and how can I fix it?
Would this be device’s fault, Smartthings hub, or device handler?
I’d really appreciate any help.


(Jack) #2

So I’ve found out that whenever I send out a writeAttribute command from the Smartthings hub, I noticed that it always sayd “datatype: unknown”. My code is:

zigbee.writeAttribute(CLUSTER_ANALOG_VALUE, PRESENT_VALUE, 0x21, 0x03)

Why would I have this issue and how might I fix it?


(Zach Varberg) #3

The 0x21 is the data type of what you are writing to that attribute. The ZCL spec defines that attribute as a single precision floating point value which would be 0x39 or DataType.FLOAT4 if you import it to your DTH using import physicalgraph.zigbee.zcl.DataType I have not used that cluster (I’m assuming cluster 0x000E) personally before so I can’t be sure that will be sufficient. If you could post more complete error/log messages I might be able to help more.


(Jack) #4

I tried setting to 0x39, but it didn’t fix my problem. My logs are below.


(Zach Varberg) #5

So that warn message is just letting you know that our Zigbee library didn’t automatically parse that as an event. However, that response is a write attribute response (command 0x04) and write attribute responses have a body with one entry for each attribute written with the status followed by the attribute ID. In this case it is reporting 0x86 for the attribute 0x0055. Status 0x86 is UNSUPPORTED_ATTRIBUTE so it appears that the device you are working with does not support that attribute.