Question
In Custom Clusters, is it possible to define an attribute that stores a variable-length string?
Hi there,
In Custom Clusters, I'm exploring the option of defining an attribute capable of storing a string with a variable length. I need some information on below parameter 'customValSz':
// structure ZbZclAttrT from zcl.h
unsigned int customValSz;
/**< A custom size is required if the data type is one of:
* ZCL_DATATYPE_STRING_OCTET,
* ZCL_DATATYPE_STRING_CHARACTER,
* ZCL_DATATYPE_STRING_LONG_OCTET,
* ZCL_DATATYPE_STRING_LONG_CHARACTER,
* ZCL_DATATYPE_ARRAY,
* ZCL_DATATYPE_STRUCT,
* ZCL_DATATYPE_SET,
* ZCL_DATATYPE_BAG
*
* A custom size is also required if both customRead and customWrite callbacks
* are provided and ZCL_ATTR_FLAG_PERSISTABLE is set.
*
* The maximum size is the length returned by ZbZclClusterGetMaxAsduLength() or
* the cluster's maxAsduLength parameter. It should not exceed
* ZB_APS_CONST_MAX_FRAG_SIZE. */It is evident from the information above that we can send a maximum of ZB_APS_CONST_MAX_FRAG_SIZE, which is 2000 bytes. Please confirm if my understanding is correct, and any suggestions are welcome.
Question: Can I create an attribute for variable string or for fixed size string with 512 bytes within custom cluster?
--
Thanks
Naani Ch