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Error accessing top level port of VHDL DUT trying adder example using GHDL
See original GitHub issueWhen trying the VHDL adder example with GHDL, each tests fails when the first access to a top level port occurs.
TMs-Air:tests torsten$ make SIM=ghdl TOPLEVEL_LANG=vhdl
/Applications/Xcode.app/Contents/Developer/usr/bin/make results.xml
cd sim_build && /usr/local/bin/ghdl -a /Users/torsten/Projects/Git/cocotb/examples/adder/tests/../hdl/adder.vhdl && /usr/local/bin/ghdl -e adder
cd sim_build; \
PYTHONPATH=/Users/torsten/Projects/Git/cocotb/build/libs/x86_64:/Users/torsten/Projects/Git/cocotb:/Users/torsten/Projects/Git/cocotb/examples/adder/tests:/Users/torsten/Projects/Git/cocotb/examples/adder/tests/../model: LD_LIBRARY_PATH=/Users/torsten/Projects/Git/cocotb/build/libs/x86_64::/System/Library/Frameworks/Python.framework/Versions/2.7/lib:/System/Library/Frameworks/Python.framework/Versions/2.7/lib:/System/Library/Frameworks/Python.framework/Versions/2.7/lib:/System/Library/Frameworks/Python.framework/Versions/2.7/lib MODULE=test_adder \
TESTCASE= TOPLEVEL=adder TOPLEVEL_LANG=vhdl \
/usr/local/bin/ghdl -r adder --vpi=/Users/torsten/Projects/Git/cocotb/build/libs/x86_64/libvpi.so
loading VPI module '/Users/torsten/Projects/Git/cocotb/build/libs/x86_64/libvpi.so'
-.--ns INFO cocotb.gpi GpiCommon.cpp:91 in gpi_print_registered_impl VPI registered
VPI module loaded!
0.00ns INFO cocotb.gpi gpi_embed.c:248 in embed_sim_init Running on GHDL version 0.1
0.00ns INFO cocotb.gpi gpi_embed.c:249 in embed_sim_init Python interpreter initialised and cocotb loaded!
0.00ns INFO cocotb __init__.py:115 in _initialise_testbench Running tests with Cocotb v1.0 from /Users/torsten/Projects/Git/cocotb
0.00ns INFO cocotb __init__.py:131 in _initialise_testbench Seeding Python random module with 1466546523
0.00ns INFO cocotb.regression regression.py:161 in initialise Found test test_adder.adder_basic_test
0.00ns INFO cocotb.regression regression.py:161 in initialise Found test test_adder.adder_randomised_test
0.00ns INFO cocotb.regression regression.py:262 in execute Running test 1/2: adder_basic_test
0.00ns INFO ..tine.adder_basic_test.0x101bc7a90 decorators.py:189 in send Starting test: "adder_basic_test"
Description: Test for 5 + 10
2.00ns ERROR ..tine.adder_basic_test.0x101bc7a90 result.py:51 in raise_error Send raised exception: adder contains no object named A
File "/Users/torsten/Projects/Git/cocotb/cocotb/decorators.py", line 194, in send
return self._coro.send(value)
File "/Users/torsten/Projects/Git/cocotb/examples/adder/tests/test_adder.py", line 16, in adder_basic_test
dut.A = A
File "/Users/torsten/Projects/Git/cocotb/cocotb/handle.py", line 239, in __setattr__
return getattr(self, name)._setcachedvalue(value)
File "/Users/torsten/Projects/Git/cocotb/cocotb/handle.py", line 261, in __getattr__
raise AttributeError("%s contains no object named %s" % (self._name, name))
3.00ns ERROR cocotb.regression regression.py:246 in handle_result Test Failed: adder_basic_test (result was TestError)
3.00ns INFO cocotb.regression regression.py:262 in execute Running test 2/2: adder_randomised_test
3.00ns INFO ..adder_randomised_test.0x101bc7e90 decorators.py:189 in send Starting test: "adder_randomised_test"
Description: Test for adding 2 random numbers multiple times
5.00ns ERROR ..adder_randomised_test.0x101bc7e90 result.py:51 in raise_error Send raised exception: Attempt to access A which isn't present in adder
File "/Users/torsten/Projects/Git/cocotb/cocotb/decorators.py", line 194, in send
return self._coro.send(value)
File "/Users/torsten/Projects/Git/cocotb/examples/adder/tests/test_adder.py", line 37, in adder_randomised_test
dut.A = A
File "/Users/torsten/Projects/Git/cocotb/cocotb/handle.py", line 243, in __setattr__
name, self._name))
6.00ns ERROR cocotb.regression regression.py:246 in handle_result Test Failed: adder_randomised_test (result was TestError)
6.00ns ERROR cocotb.regression regression.py:167 in tear_down Failed 2 out of 2 tests (0 skipped)
6.00ns INFO cocotb.regression regression.py:176 in tear_down Shutting down...
Running the example with icarus verilog works as expected. Maybe this is an GHDL specific error? The endian_swapper example works with both, icarus and GHDL.
Issue Analytics
- State:
- Created 7 years ago
- Comments:5 (3 by maintainers)
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Yes, using a case insensitive string compare fixes the issue.
I think we can close this issue.