From: W. Trevor King <wking@tremily.us>
Date: Thu, 7 Feb 2013 06:07:34 +0000 (-0500)
Subject: scan: Approach the surface with stepper_approach() before looping
X-Git-Tag: v0.2~8
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=30183b2a4c37c1a178f28615e317d2cde0af2874;p=unfold-protein.git

scan: Approach the surface with stepper_approach() before looping

This makes the initial approach much faster if you are starting far
from the surface (e.g. after a calibcant calibration).
---

diff --git a/unfold_protein/scan.py b/unfold_protein/scan.py
index de1edda..e511dfd 100644
--- a/unfold_protein/scan.py
+++ b/unfold_protein/scan.py
@@ -34,6 +34,8 @@ class UnfoldScanner (object):
     def run(self):
         self._stop = False
         _signal.signal(_signal.SIGTERM, self._handle_stop_signal)
+        self.unfolder.afm.move_away_from_surface()
+        self.stepper_approach()
         for i in range(self.config['velocity']['num loops']):
             _LOG.info('on loop {} of {}'.format(
                     i, self.config['velocity']['num loops']))