Versioning library

Data Structures
struct	version_t

Functions
void	print_version (void)
void	check_version (void)

Variables
const version_t	libpynq_version

Detailed Description

Typedef and functions to check the version and compatibility of the libpynq library and the FPGA bitstream.

Semantic versioning (https://semver.org) is used. Given a version number MAJOR.MINOR.PATCH, increment the:

• MAJOR version when you make incompatible API changes between libpynq and FPGA bitstream (SD-card image)
• MINOR version when you add functionality in a backward compatible manner.
• PATCH version when you make backward compatible bug fixes.

When the libpynq library version and the FPGA bitstream version are not the same:

• libpynq.MAJOR < bitstream.MAJOR: you MUST update libpynq to the latest version compatible with the bitstream version. The check_version function will fail and exit your program.
• libpynq.MAJOR > bitstream.MAJOR: you MUST update the bitstream to the latest version compatible with the libpynq version (or downgrade the libpynq version to bitstream.MAJOR). The print/check_version function will fail and exit your program.
• libpynq.MINOR > bitstream.MINOR: it is recommended to update the bitstream to the latest version compatible with the libpynq version. The print_version function will print an INFO message.
• libpynq.MINOR < bitstream.MINOR: it is recommended to update the libpynq to the latest version compatible with the bitstream version. The print_version function will print an INFO message.
• libpynq.PATCH != bitstream.PATCH: no action required

Function Documentation

check_version()

void check_version ( void  )

extern

Check the version of the hardware (bitstream) and the libpynq library. Called by e.g. the switchbox but can also be called in user code.

Warning

Fails with program exit when versions are incompatible.

Definition at line 68 of file version.c.

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print_version()

void print_version ( void  )

extern

Print the version of the hardware (bitstream) and the libpynq library.

Prints INFO message when minor/patch versions are different.

Definition at line 44 of file version.c.

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Variable Documentation

libpynq_version

const version_t libpynq_version

extern

Constant containing the version of this the libpynq library.

Definition at line 34 of file version.c.