provide better error message in case of missing image

1 files changed, 6 insertions, 1 deletions

diff --git a/soas-assimilator.py b/soas-assimilator.py
index 1b8a4aa..185bb62 100755
--- a/soas-assimilator.py
+++ b/soas-assimilator.py
@@ -295,7 +295,12 @@ class tDeviceListener (object) :
       image_size, (image_path, image_checksum) = self._find_image(dev_size)
 
     except ValueError :
-      return self.status_cb(dev_path, model=model, device_size=dev_size, status="error", error="No matching image found")
+      if not self._images_flat :
+        msg = "No images available."
+      else :
+        msg = "No matching image found (device size %d, smallest image size %d)" % (dev_size, self._images_flat[0][0])
+
+      return self.status_cb(dev_path, model=model, device_size=dev_size, status="error", error=msg)
 
     thread = WriteThread(image_path, dev_path, model, dev_size, image_size, image_checksum, self.status_cb)
     thread.start()