invalidate doesnt update it:

ThomasFarstrike · ThomasFarstrike · commit 416316ad5a6a · 2025-05-14T12:00:24.000+02:00
diff --git a/c_mpos/src/webcam.c b/c_mpos/src/webcam.c
@@ -174,9 +174,9 @@ static mp_obj_t capture_frame(webcam_obj_t *self) {
 
     yuyv_to_grayscale_240x240(self->buffers[buf.index], self->gray_buffer, WIDTH, HEIGHT);
 
-    char filename[32];
-    snprintf(filename, sizeof(filename), "frame_%03d.raw", self->frame_count++);
-    save_raw(filename, self->gray_buffer, OUTPUT_WIDTH, OUTPUT_HEIGHT);
+//    char filename[32];
+//    snprintf(filename, sizeof(filename), "frame_%03d.raw", self->frame_count++);
+//    save_raw(filename, self->gray_buffer, OUTPUT_WIDTH, OUTPUT_HEIGHT);
 
     mp_obj_t result = mp_obj_new_bytes(self->gray_buffer, OUTPUT_WIDTH * OUTPUT_HEIGHT);
 
diff --git a/internal_filesystem/apps/com.example.camtest/assets/camtest.py b/internal_filesystem/apps/com.example.camtest/assets/camtest.py
@@ -101,24 +101,24 @@ def try_capture():
     else:
         new_cam_buffer = cam.capture()  # Returns memoryview for other camera
     if new_cam_buffer and len(new_cam_buffer) == 240 * 240:
-        # Update image descriptor with new buffer
-        #image.set_src(None)
-        #image_dsc.data = None
-        # Set image source to update LVGL
-        image_dsc.data = new_cam_buffer
-        #image.set_src(image_dsc)
-        # Free the previous buffer (if any)
         if current_cam_buffer is not None:
             if use_webcam:
-                pass
-                #webcam.free_buffer(cam)  # Explicitly free webcam buffer
+                #pass
+                webcam.free_buffer(cam)  # Explicitly free webcam buffer
             else:
                 cam.free_buffer()  # Free other camera buffer
         else:
             pass
-            #print("current_cam_buffer is None, not freeing...")
-        #current_cam_buffer = None
-        #current_cam_buffer = new_cam_buffer  # Store new buffer reference
+            print("current_cam_buffer is None, not freeing...")
+        current_cam_buffer = None
+        current_cam_buffer = new_cam_buffer  # Store new buffer reference
+        # Update image descriptor with new buffer
+        # Set image source to update LVGL
+        image_dsc.data = None # this doesnt help
+        #image.set_src(None) this crashes it
+        image_dsc.data = current_cam_buffer
+        image.invalidate()
+        #image.set_src(image_dsc)
     else:
         print("Invalid buffer size:", len(new_cam_buffer))
         if use_webcam:
