Thingmagic Mercury API v1.23.0 Manual do Utilizador descarregar pdf (Página 89)

Level 3 API 89

Level 3 API

The Level 3 API provides per-command access to the individual elements of the

underlying device control protocol. Level 3 is not portable across hardware types.

Level 3 commands are not dependant on the state of the device or of the reader

configuration; the same command with the same parameters will always send the same

message to the reader.

Level 3 commands validate their inputs to the extent necessary for communication with

the reader device (for example, limiting values to the number of bits permitted in the

protocol) but otherwise leave error checking to the device. Unless otherwise specified,

errors returned by the device are reported via instances of

ReaderCodeException. All Level

3 methods begin with “cmd”.

If any Level 3 methods seem to be required to achieve the desired functionality we

recommend you contact [email protected] to discuss before using.

CAUTION!

Making use of any commands in Level 3 or below guarantees cross-prod-

uct compatibility will be broken. These methods should only be used

when equivalent functionality is not available in Level 1 or Level 2. Level

3 APIs are not guaranteed to be the same on different versions of the

MercuryAPI.

WARNING!

Level 3 functionality does not support the asynchronous operations in

Level 1 and Level 2. Level 3 operations are strictly synchronous,

blocking method calls and cannot be performed in parallel with other

threads interacting with SerialReader devices.

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Thingmagic Mercury API v1.23.0 Manual do Utilizador Página 89