The following outlines the features of the Fosstrak HAL Project.
The Fosstrak HAL Project comprises of several modules:
The hardware abstraction standardises the interface to different readers with proprietary and thus incompatible interfaces. Even a simulator without any hardware can implement the same interface. All implementations of the hardware abstraction interface can be treated eqaly and hence are rendered interchangeable.
The simulator module consists of a controller with four possible types of simulation:
The graphic simulator provides a GUI that shows a reader with configurable amount of antennas. Tags can be created with few mouse clicks. Reading tags works like on a hardware reader. When tags are moved over an antenna, they are recognised by the reader, after leaving the area of the antenna, they are not recognised any more.
The batch simulator processes a file with information about tags entering and exiting the range of an antenna. Each event consists of a time, the type of event, source ID, tag ID and optionally user memory contents of the tag. The time describes when the event should happen in milliseconds resolution starting at the beginning of the simulation. The type of event is eiter entering or exiting the range of the source (antenna). The source ID is the name of the source antenna. The tag ID is the UID or EPC of the tag that caused the event.
The command line simulator can be controlled in real time textually over a command line. Tags can be added and removed from a source with simple commands.
The simulator client connects to a simulator server and receives events over the network. The simulator server can run on an other computer and opens a graphic simulator for example.
Following readers are implemented in the Fosstrak HAL:
| Package | Reader Manufacturer | Reader Models |
| fosstrak-hal-feig | FEIG ELECTRONIC | OBID i-scan ID ISC.MR100/101 (COM) OBID i-scan ID ISC.LRU1000 (TCP/IP) |
| fosstrak-hal-impinj | Impinj | Speedway (TCP/IP) |