tools, pyboard.py: Allow exec argument to be bytes or str.

dpgeorge · dpgeorge · commit 9c9db3a7a1c2 · 2014-10-19T14:54:52.000+01:00
diff --git a/tools/pyboard.py b/tools/pyboard.py
@@ -71,7 +71,10 @@ def eval(self, expression):
         return ret
 
     def exec(self, command):
-        command_bytes = bytes(command, encoding='ascii')
+        if isinstance(command, bytes):
+            command_bytes = command
+        else:
+            command_bytes = bytes(command, encoding='ascii')
         for i in range(0, len(command_bytes), 32):
             self.serial.write(command_bytes[i:min(i+32, len(command_bytes))])
             time.sleep(0.01)
