test: generate tb.vcd waveform file by default

urish · urish · commit 0ac027d5fe1f · 2025-10-28T11:54:21.000+02:00
Starting with cocotb 2.0.0, the default has changed not to dump a waveform. We override this default by setting WAVES to 1 in the test Makefile.
diff --git a/test/Makefile b/test/Makefile
@@ -3,6 +3,7 @@
 
 # defaults
 SIM ?= icarus
+WAVES ?= 1
 TOPLEVEL_LANG ?= verilog
 SRC_DIR = $(PWD)/../src
 PROJECT_SOURCES = project.v
