try to test this

va416xx-hal/src/nvm.rs

@@ -260,6 +260,8 @@ impl Nvm {
 /// Call [Self::shutdown] on drop.
 impl Drop for Nvm {
     fn drop(&mut self) {
-        self.shutdown(unsafe { &mut pac::Sysconfig::steal() });
+        if self.spi.is_some() {
+            self.shutdown(unsafe { &mut pac::Sysconfig::steal() });
+        }
     }
 }