Zigbee IAS Zone example

RE: Zigbee IAS Zone example

Marjeris Romero — Thu, 22 Apr 2021 20:16:56 GMT

[quote user="iharyadi"]

Just FYI, I am implementing the IAS Zone for a Gas Stove Sensor. I am very happy with nrf52840. It is a very good platform for what I am trying to do.

https://www.linkedin.com/pulse/zigbee-gas-stove-sensor-iman-haryadi

[/quote]

Wow, that's such a cool implementation using Zigbee/BLE multiprotocol!

[quote user="iharyadi"] Just FYI, I think the implementation (not specification) of the ZBOSS in nrf52840 does not automatically send the Zone Status Change when ZoneStatus attribute changes. My code have to explicitly send zcl "Zone Status Change Notification" command in this case.[/quote]

Thanks for letting me know, there could be a bug or perhaps I am misinterpretating the specification, anyways I will pass this information to our Zigbee team for more investigation. I have also noted your feedback for implementing an IAS zone server example, which I also think will be a nice addition to in our SDK!

Best regards,

Marjeris

RE: Zigbee IAS Zone example

iharyadi — Mon, 19 Apr 2021 19:25:55 GMT

Hi Marjeris,

Thank you for your update. Just FYI, I think the implementation (not specification) of the ZBOSS in nrf52840 does not automatically send the Zone Status Change when ZoneStatus attribute changes. My code have to explicitly send zcl "Zone Status Change Notification" command in this case.

In any case, thank you for your help. I am able to figure out the implementation slowly. It would be helpful if you can still give all of us an example for IAS Zone. We may produce better or proper implementation.

Just FYI, I am implementing the IAS Zone for a Gas Stove Sensor. I am very happy with nrf52840. It is a very good platform for what I am trying to do.

https://www.linkedin.com/pulse/zigbee-gas-stove-sensor-iman-haryadi

Thank you for all your help on this.

Iman

RE: Zigbee IAS Zone example

Marjeris Romero — Mon, 19 Apr 2021 18:37:34 GMT

Hi,

I am sorry for the late reply. Did you manage to see the Zone Status Change Notification on the sniffer traffic after updating the ZoneStatus attribute?

[quote user="iharyadi"]So, your suggestion is to write the ZoneStatus attribute. Then, the stack will automatically send Zone Status Change Notification command. Please confirm that this is what you mean?[/quote]

Yes, this is exactly what the ZCL specification says, the stack should send the Zone Status Change notification when the ZoneStatus attribute changes: "The Zone Status Change Notification command is generated when a change takes place in one or more bits of the ZoneStatus attribute".

Best regards,

Marjeris

RE: Zigbee IAS Zone example

iharyadi — Thu, 04 Mar 2021 02:43:16 GMT

[quote userid="73427" url="~/f/nordic-q-a/71532/zigbee-ias-zone-example/297428#297428"]You can register a callback for the Zone Status Change notification or register a general function callback with params zb_zcl_general_zb_params_e[/quote]

I think we may have some miss understanding. in IAS Zone cluster, A server generate Zone Status Change Notification command. It does not listen to Zone Status Change Notification command.

I am writing a IAS Zone. So, your suggestion is to write the ZoneStatus attribute. Then, the stack will automatically send Zone Status Change Notification command. Please confirm that this is what you mean? I am confused now.

I tried your suggestion as follow.

    newValue = 1;
    ZB_ZCL_SET_ATTRIBUTE(MULTI_SENSOR_ENDPOINT, 
                       ZB_ZCL_CLUSTER_ID_IAS_ZONE,    
                       ZB_ZCL_CLUSTER_SERVER_ROLE,  
                       ZB_ZCL_ATTR_IAS_ZONE_ZONESTATUS_ID,
                       (zb_uint8_t *)&newValue,                        
                       ZB_FALSE);

I don't think the stack send out Zone Status Change Notification command.

Thank you for the help. I hope you can clarify.

Thanks

Iman

RE: Zigbee IAS Zone example

Marjeris Romero — Wed, 03 Mar 2021 09:55:12 GMT

Hi,

Sorry for the late reply. This function can be called by the IAS zone server in order to register internal application callbacks. You can register a callback for the Zone Status Change notification or register a general function callback with params zb_zcl_general_zb_params_e

enum zb_zcl_general_cb_params_e
{
 ZB_ZCL_VALID_CIE_ADDR_SET = 1,
 ZB_ZCL_CURR_ZONE_SENSITIVITY_LEVEL_SET = 2,
 ZB_ZCL_INIT_TEST_MODE = 3,
 ZB_ZCL_INIT_NORMAL_MODE = 4,
};

The Zone Status Change notification is generated spontaneously by the server once the Zone Status attribute changes, the documentation in ZCL spec mentions: "The Zone Status Change Notification command is generated when a change takes place in one or more bits of the ZoneStatus attribute" and is under 'Commands generated' by the IAS zone server.

RE: Zigbee IAS Zone example

iharyadi — Thu, 18 Feb 2021 17:08:03 GMT

Hi Marjeris,

Thanks for the help. Please confirm that the callback is only used when you write ias zone client. Is this correct? If you write ias zone server, you are the one that change the status. If this correct, so why a client need notification of ieee address change?

Please clarify a scenario where you want to get notification for ZB_ZCL_VALID_CIE_ADDR_SET.

In my guess due to the lack of documentation, this notification is use full for ias zone server during pairing when ias cie set its own address to an ias server.

Please help with a specific example on the above example when you use it as ias server.

Thanks

RE: Zigbee IAS Zone example

Marjeris Romero — Thu, 18 Feb 2021 08:42:54 GMT

Hi,

I am sorry for the late reply. It looks like you can use this function to register a callback for to process the results for from the 'Zone Status Change Notification'. I think there is a typo and it should say 'Register' instead of 'Registry', if that makes more sense? I don't think it's necessary to register a callback unless you want to do something else after the notification is sent, since I don't see anything mention in the ZCL specification.
I have given feedback to the developers about the need for an example implementation of the IAS zone cluster, it will perhaps come into the roadmap in the future but I can't make any promises. In the meantime if you have any more question I can try to help the best I can, if you have already partly implemented the cluster but are struggling you can share your code in here so I can test and help you debug at our side as well.

BR,

Marjeris