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3.3 Status Information

3.3.1 Functions for Information Retrieval

The driver provides functions to retrieve detailed information on the type of board, its conﬁgu-

ration, settings and state. The information is split according to its scope and the computational

requirements to query the information from the board.

int ndigo get static info(ndigo device *device,ndigo static info *info)

This structure contains information about the board that does not change during run time.

int ndigo get param info(ndigo device *device, ndigo param info *info)

The structure returned by this call contains information that changes indirectly due to conﬁgu-

ration changes.

int ndigo get fast info(ndigo device *device, ndigo fast info *info)

This call returns a structure that contains dynamic information that can be obtained within a

few microseconds.

int ndigo get slow info(ndigo device *device, ndigo slow info *info)

The data reported in this structure requires milliseconds to be obtained. The application should

only call it in situation where the program ﬂow can cope with an interruption of that magnitude.

const char* ndigo get last error message(ndigo device *device)

3.3.2 Structure ndigo static info

This structure contains information about the board that does not change during run time. It

is provided by the function ndigo get static info.

int size

The number of bytes occupied by the structure

int version

A version number that is increased when the deﬁnition of the structure is changed. The incre-

ment can be larger than one to match driver version numbers or similar.

int board id

Index of the board as passed to the constructor or set via int ndigo set board id(ndigo device

*device, int board id).

int driver revision

The lower three bytes contain a triple level hierarchy of version numbers, e.g. 0x010103 encodes

version 1.1.3.

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Cronologic Ndigo Crate Guía de usuario Pagina 32