The modules can be used straight away in your simulation and build project. Start by cloning the repo:
If you want a stable release you can checkout one of the tags.
Synthesizable source code is found in the
src folder of each module.
These files should be added to your simulation and build project.
The library name is the same as the module name.
Test code is found in the
test folder of each module.
Simulation code (BFMs) is found in the
sim folder of each module.
The simulation code should be added to your simulation project.
All files must be handled as VHDL-2008.
When using tsfpga, this is done with a call to
tsfpga.module.get_modules() and appending
to your current list of modules.
Many entities in this project have corresponding constraint files that must be used in
build projects for proper operation.
These are found in the
scoped_constraints directory of the module, which contains
.tcl files that have the same file name as the corresponding entity.
These must be loaded in Vivado with e.g.
read_xdc -ref asynchronous_fifo /home/lukas/work/repo/hdl_modules/hdl_modules/modules/fifo/scoped_constraints/asynchronous_fifo.tcl
The constraint file being scoped means that it is applied relative to each instance of the entity. Using this we do not have to search through the whole design hierarchically to find the signals that we are interested in in our constraint file.
When using tsfpga, this is done automatically for build projects, since hdl_modules uses the recommended module structure.
The modules consistently use unresolved types
std_ulogic instead of
u_unsigned instead of
This means that accidental multiple drivers of a signal will result in an error when simulating
or synthesizing the design.
std_logic is a sub-type of
std_ulogic in VHDL-2008, it is no problem if
hdl_modules components are integrated in a code base that still uses the resolved types.
std_logic signal can be attached to a hdl_modules port of type
out) without problem.