CODEWITHSUNDEEP
ghdllattice-diamondcocotb
kayakist
kayakist

Reputation: 21

GHDL, Precompile Vendor Primitives and Cocotb

I have a design where I use an IP module generated by Lattice Diamond. This uses the Macxo3l library which is shipped with diamond as a vendor library.

Using GHDL I can compile the design including this library using the instructions from https://ghdl.readthedocs.io/en/latest/building/PrecompileVendorPrimitives.html then the commands.

ghdl -i --ieee=synopsys -P=lattice/ --workdir=work cores/*.vhd
ghdl -i --workdir=work src/*.vhd

However I have been unable to make this compile using cocotb. Below is my make file. Where I use the command VHDL_SOURCES_Lib which I found reference to at https://cocotb.readthedocs.io/en/latest/building.html

TOPLEVEL_LANG ?= vhdl

PWD=$(shell pwd)

ifeq ($(OS),Msys)
WPWD=$(shell sh -c 'pwd -W')
PYTHONPATH := $(WPWD)/../model;$(PYTHONPATH)
else
WPWD=$(shell pwd)
PYTHONPATH := $(WPWD)/../model:$(PYTHONPATH)
endif

VHDL_SOURCES_Lib = $(WPWD)/../lattice/
VHDL_SOURCES = $(WPWD)/../cores/Adder.vhd $(WPWD)/../cores/Counter.vhd $(WPWD)/../cores/Multiplyer.vhd $(WPWD)/../cores/SinCos.vhd  $(WPWD)/../src/top.vhd



TOPLEVEL := top
MODULE   := test_of_top

include $(shell cocotb-config --makefiles)/Makefile.inc
include $(shell cocotb-config --makefiles)/Makefile.sim

Compiling this however gives me the error:

make results.xml
make[1]: Entering directory '/HDL/cocotbTest'
make[1]: *** No rule to make target '/HDL/cocotbTest/../cores/Adder.vhd', needed by 'analyse'.  Stop.
make[1]: Leaving directory '/HDL/cocotbTest'
/home/anaconda3/lib/python3.6/site-packages/cocotb/share/makefiles/Makefile.sim:84: recipe for target 'sim' failed
make: *** [sim] Error 2

I am able to run the cocotb examples using GHDL. How should I instruct cocotb to include the Vendor Primitive files.

Thank you for any help you can provide.

Upvotes: 2

Views: 867

Answers (1)

FabienM
FabienM

Reputation: 3751

I think you should add the exact filenames in VHDL_SOURCES_Lib as documentation said :

VHDL_SOURCES_lib

A list of the VHDL source files to include in the VHDL library lib (currently GHDL only).

But to add precompiled library as you show, you have to pass a compile option to ghdl : -P=lattice/

Use COMPILE_ARGS to add it:

COMPILE_ARGS=-P=lattice/

Upvotes: 1

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