Inserted submodule line
diff --git a/openlane/user_project_wrapper/config.tcl b/openlane/user_project_wrapper/config.tcl
index 330cf57..1a79457 100755
--- a/openlane/user_project_wrapper/config.tcl
+++ b/openlane/user_project_wrapper/config.tcl
@@ -42,7 +42,8 @@
### Black-box verilog and views
set ::env(VERILOG_FILES_BLACKBOX) "\
$script_dir/../../caravel/verilog/rtl/defines.v \
- $script_dir/../../verilog/rtl/user_proj_example.v"
+ $script_dir/../../verilog/rtl/user_proj_example.v\
+ $script_dir/../../verilog/rtl/Per_32B.v"
set ::env(EXTRA_LEFS) "\
$script_dir/../../lef/user_proj_example.lef"
