Fix crash while overriding coils and discrete inputs from the UI

Author: dhoomakethu

modbus_simulator/ui/datamodel.py

@@ -423,7 +423,7 @@ def on_data_update(self, index, data):
         if self.blockname in ['input_registers', 'holding_registers']:
             self.list_view.adapter.data[index]['value'] = float(data)
         else:
-            self.list_view.adapter.data.update({index: float(data)})
+            self.list_view.adapter.data[index]['value'] = int(data)
         self.list_view._trigger_reset_populate()
         data = {'event': 'sync_data',
                 'data': {index: self.list_view.adapter.data[index]}}

modbus_simulator/ui/gui.py

@@ -588,9 +588,12 @@ def sync_data_callback(self, blockname, data):
                         v['formatter']
                     )
                 else:
+                    # v = dict(value=int(v))
+                    if not isinstance(v, dict):
+                        v = dict(value=v)
                     self.modbus_device.set_values(int(self.active_slave),
                                                   current_tab,
-                                                  k, int(v['value']))
+                                                  k, v.get('value'))
         except KeyError:
             pass
         except struct.error: