Add `steps` and `sleep` options for gentler `jump()`s.

diff --git a/pypiezo/base.py b/pypiezo/base.py
index c74c8761df93ebef8cd3d042217543446a914a61..8594646b0b1de149ea79f82552c40a993b12c37b 100644 (file)
--- a/pypiezo/base.py
+++ b/pypiezo/base.py
@@ -516,9 +516,15 @@ class Piezo (object):
         _LOG.debug('current position: %s' % ret)
         return ret
 
-    def jump(self, axis_name, position):
+    def jump(self, axis_name, position, steps=1, sleep=None):
         "Move the output named `axis_name` to `position`."
-        _LOG.debug('jump %s to %s' % (axis_name, position))
+        _LOG.debug('jump %s to %s in %d steps' % (axis_name, position, steps))
+        if steps > 1:
+            orig_pos = self.last_output[axis_name]
+            for pos in _numpy.linspace(orig_pos, position, steps+1)[1:]:
+                self.jump(axis_name=axis_name, position=pos)
+                if sleep:
+                    _sleep(sleep)
         position = int(position)
         channel = self.channel_by_name(name=axis_name)
         channel.data_write(position)