fix detection of LED control ability (#791)

Author: bimac

CHANGELOG.md

@@ -1,6 +1,10 @@
 Changelog
 =========
 
+8.27.6
+------
+* fixed: detection of LED control ability broken for Bpods with old firmware  
+
 8.27.5
 ------
 * fixed: issues in serial communication resolved through update to iblpybpod-no-gui 3.1.0

iblrig/__init__.py

@@ -6,4 +6,4 @@
 # 5) git tag the release in accordance to the version number below (after merge!)
 # >>> git tag 8.15.6
 # >>> git push origin --tags
-__version__ = '8.27.5'
+__version__ = '8.27.6'

iblrig/hardware.py

@@ -298,7 +298,7 @@ def set_status_led(self, state: bool) -> bool:
                 self._arcom.serial_object.write(command)
                 if self._arcom.read_uint8() == 1:
                     return True
-            except serial.SerialException:
+            except (serial.SerialException, struct.error):
                 pass
             self._arcom.serial_object.reset_input_buffer()
             self._arcom.serial_object.reset_output_buffer()