Cleaner exit on reading 0 bytes.

project-rig · Apr 21, 2015 · f0883f9 · f0883f9
1 parent 387fc7d
commit f0883f9
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/rig/machine_control/machine_controller.py b/rig/machine_control/machine_controller.py
@@ -1467,11 +1467,11 @@ def read(self, n_bytes=-1):
             n_bytes = self._end_address - self.address
 
         # Determine how far to read, then read nothing beyond that point.
-        if self.address + n_bytes >= self._end_address:
+        if self.address + n_bytes > self._end_address:
             n_bytes = min(n_bytes, self._end_address - self.address)
 
-            if n_bytes <= 0:
-                return b''
+        if n_bytes <= 0:
+            return b''
 
         # Perform the read and increment the offset
         data = self._machine_controller.read(