Zigbee attribute read request

[abe]

Hello, I' trying to use the macro here below, but there are no sample in SDK.
Have you any example for using it?
Many thanks

Abele

[abe]

Hi Marjeris,
I apologize for the delay, but I was busy with other works. Now I'm on this project, and I tried to add the functions you suggest, but I have some errors and I'm not be able to find the right definitions, for example, for the light_switch_entry_t typedef and LIGHT_COORDINATOR_EP macro.
Where I can find these? What the sample code you refer to?
Many thanks for your help!
Abele

[Marjeris Romero]

Hi Abele,

The code snippet I shared was just so you could see an example on how the ZB_ZCL_GENERAL_SEND_READ_ATTR_REQ macro is implemented and how to implement an endpoint handler to intercept the response, I don't recommend copying it directly, as some functions and structs in that snippet are defined by myself, sorry for the confusion about that. For example light_switch_entry_t is just a selfmade structure I defined to help me store the on/off state of the devices in the network.

And for example should change the "LIGHT_COORDINATOR_EP" for the name you have defined for your sending endpoint (from which endpoint are you sending the send read attribute request?).

I think it would be easier for me to help you if you could share your code (main.c) here.

BR,

Marjeris

[abe]

Hi Marjeris,

many thanks for your help, now I'm be able to intercept the ZCL attr request response.
In my code I forgot the ZB_AF_REGISTER_DEVICE_CTX() initialization, then my macro call ZB_AF_SET_ENDPOINT_HANDLER(ZIGBEE_ZC_MAIN_ENDPOINT, callback_ep_handler) had no effects.
Now, when i send a read_attr request, the callback_ep_handler() function is invoked.
Two further questions:
- the callback_ep_handler() return the "zb_uint8_t param" value set to 0x04, it's right? What's the meaning of this parameter?
- I need using Groupcast command: for example, I have set cluster 4 inside two light bulb with the command "add group" (both with same group code, of course). How can I send the "groupcast" on/off command? There is an example how to make this?
Kind regards

Abele

[Marjeris Romero]

 Hi Abele,

Sorry for the late reply. Can you share the code of callback_ep_handler()? The packet ZCL packet handler (in this case callback_ep_handler()) should either return ZB_FALSE, if the packet is not processed by the application and the default ZCL handling is applied, or ZB_TRUE if the aplication does handle the packet and no default processing is needed. See "Implementing algorithm for overriding the handling of ZCL commands".

For sending and a group command you need to use the group ID as the destination address. Take a look at the light_switch_groups examples under example/zigbee/experimental

static zb_void_t light_switch_send_on_off(zb_uint8_t param, zb_uint16_t on_off)
{
    zb_uint8_t           cmd_id;
    zb_uint16_t          group_id = DEFAULT_GROUP_ID;
    zb_buf_t           * p_buf = ZB_BUF_FROM_REF(param);

    if (on_off)
    {
        cmd_id = ZB_ZCL_CMD_ON_OFF_ON_ID;
    }
    else
    {
        cmd_id = ZB_ZCL_CMD_ON_OFF_OFF_ID;
    }

    NRF_LOG_INFO("Send ON/OFF command: %d", on_off);

    ZB_ZCL_ON_OFF_SEND_REQ(p_buf,
                           group_id,
                           ZB_APS_ADDR_MODE_16_GROUP_ENDP_NOT_PRESENT,
                           0,
                           LIGHT_SWITCH_ENDPOINT,
                           ZB_AF_HA_PROFILE_ID,
                           ZB_ZCL_DISABLE_DEFAULT_RESPONSE,
                           cmd_id,
                           NULL);
}

Best regards,

Marjeris