Hardware Reference
In-Depth Information
Find Information Request/Response
Obtain a list of all attributes in a particular handle range.
Find by Type Value
Obtain the handle range between an attribute identifed by its UUID and its
value and the next group delimiter.
Read Operations
Used by the client to obtain the value of one or more attributes, they include:
Read by Type Request/Response
Obtain the value of one or more attributes using a UUID.
Read Request/Response
Obtain the value of attributes using a handle.
Read Blob Request/Response
Obtain part of a value of a long attribute using a handle.
Read Multiple Request/Response
Obtain the value of one or more attributes using multiple handles.
Read by Group Type Request/Response
Similar to Read by Type, but the UUID must be of a grouping type.
Write Operations
Used by the client to set the value of one or more attributes, they include:
Write Request/Response
Write to the value of an attribute and expect a response from the server.
Write Command
Write to the value of an attribute without any response or acknowledgement.
This operation does not follow the request/response sequencing and can be
sent at any time.
Signed Write Command
Similar to Write Command, but using a signature as described in “Security
Manager (SM)” on page 28 . This operation does not follow the request/response
sequencing and can be sent at any time.
Queued Writes
Used by the client to write to attribute values that are longer than what can fit in a
single packet, they include:
Prepare Write Request/Response
Queue a write operation in the server for a particular handle, after which the
successful queuing is acknowledged by the server.
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