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How to get value of attributes from tshark

asked 2020-02-13 16:16:33 +0000

Neha malhotra gravatar image

Hi Team,

I am facing issue in retrieving values corresponding to attributes in zigbee zcl layer. I am not sure how to traverse through attributes to get their values in report: For example: From below mentioned data, I need to get values corresponding to attributes. Value is in form of Uint24,uint48,uint32 etc

Attribute Field, Uint: 1087943
    **Attribute**: Client: Functional Notification Flags / Server: Current Summation Delivered (0x0000)
    Data Type: 48-Bit Unsigned Integer (0x25)
    **Uint48**: 1087943 (0x00000000001099c7)

Attribute Field, Enum8: 1
    **Attribute**: Unit of Measure (0x0300)
    Data Type: 8-Bit Enumeration (0x30)
    **Uint48**: 1 (0x01)

Attribute Field, Uint24: 2126776
    **Attribute**: Current Day Alternative Consumption Delivered (0x0c01)
    Data Type: 24-Bit Unsigned Integer (0x22)
    **Uint24**: 2126776 (0x2073b8)

I need to get attribute and their corresponding value(uint24/uint48) & export to csv file.

Please assist.

Thanks & Regards, Neha Malhotra

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answered 2020-02-13 20:17:11 +0000

Chuckc gravatar image

I think you will have to post process the tshark output with a shell script or python program. - sample_control4_2012-03-24.pcap ZigBee protocol traffic.

This is from the sample capture and shows that the data can be not consistent so program needs some intelligence:

Command: Write Attributes No Response (0x05)
Attribute Field, Uint8: 1
    Attribute: Unknown (0x0003)
    Data Type: 8-Bit Unsigned Integer (0x20)
    Uint8: 1 (0x01)
Attribute Field, Uint16: 300
    Attribute: Unknown (0x0002)
    Data Type: 16-Bit Unsigned Integer (0x21)
    Uint16: 300 (0x012c)
Attribute Field
    Attribute: Mains Frequency (0x0001)
    Data Type: 16-Bit Unsigned Integer (0x21)
    Measured Mains Frequency: 70 [Hz]
Attribute Field
    Attribute: Unknown (0x0c01)
    Data Type: No Data (0x00)
Attribute Field
    Attribute: Unknown (0x1620)

[Malformed Packet: ZigBee ZCL] [Expert Info (Error/Malformed): Malformed Packet (Exception occurred)] [Malformed Packet (Exception occurred)] [Severity level: Error]

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Asked: 2020-02-13 16:16:33 +0000

Seen: 489 times

Last updated: Feb 13 '20