Zigbee send character string with 250 symbols

[Bwko]

Hello,

 

I'm trying to send a character string(zb_uint8_t) with 250 symbols from my Zigbee end device to my Zigbee coordinator by using the nRF Connect SDK v2.2.0. To send the character string I'm using the zb_zcl_set_attr_val function. 

This partially works, I'm receiving the character string at my coordinator but unfortunately the character string gets truncated to around 50 symbols. I'm guessing that I'm hitting a Zigbee size limitation. 

 

Is there any way to send this payload to my coordinator? Perhaps by using other data types or by sending multiple packets/frames to my coordinator?

Are there some examples on how to achieve this?

 

Thanks in advance!

[Amanda Hsieh]

Hi, 

I am looking into this case and will reply later. 

Regards,
Amanda H.

[Bwko]

Hi Amanda,

Thank you for looking into this issue. Do you have an update about this case?

[Amanda Hsieh]

I have not gotten a reply from the team yet. 

-Amanda H.

[Amanda Hsieh]

Hello, 

Would it be an option to use a custom cluster that uses an attribute of type long octet string? Such an attribute should allow to send/receive long data (>256 Bytes) by reading/writing to an attribute. A small change in ZCL will be required, and it is not tested yet, but we just want to check if that could be an option first.

-Amanda H.