sim: update roi

sim_roi.py

@@ -21,7 +21,16 @@ class ROI(Module):
             self.comb += s.source.connect(d.sink)
 
         self.sink = pipeline[0].sink
-        self.source = pipeline[-1].source
+        # self.source = pipeline[-1].source
+         
+        # DEBUG: test roi
+        cfg = self.pipeline.roi.cfg
+        self.comb += [
+            cfg.x0.eq(0),
+            cfg.x1.eq(8),
+            cfg.y0.eq(0),
+            cfg.y1.eq(1),
+        ]
 
 
 
@@ -231,8 +240,8 @@ def testbench():
 
 def testbench_fake_data():
     # config
-    pix_size = 10
-    x_size = 7
+    pix_size = 8
+    x_size = 13
     y_size = 3