add files and simulated modes

backlight.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+# *-----------------------------------------------------------------------*
+# |                                                                       |
+# |  Copyright (c) 2022 by Paul Scherrer Institute (http://www.psi.ch)    |
+# |              Based on Zac great first implementation                  |
+# |              Author Thierry Zamofing (thierry.zamofing@psi.ch)        |
+# *-----------------------------------------------------------------------*
+
+import logging
+_log=logging.getLogger(__name__)
+import epics
+
+#from app_config import settings
+#from app_utils import assert_motor_positions
+
+class Backlight(object):
+  def __init__(self, prefix: str='SAR-EXPMX:MOT_BLGT'):
+    if prefix is None:
+      self._sim={'pos':'out'}
+      _log.info('simulated mode:{}'.format(self._sim))
+      return #simulated mode
+    self._mot = epics.Motor(prefix)
+    self._pos = {'in':-29000,'out':0}
+
+  def is_pos(self,strPos):
+    try:
+      m=self._mot
+    except AttributeError:
+      _log.info('simulated mode:{}'.format(strPos))
+      return self._sim['pos']==strPos
+    m.refresh()
+    return abs(m.readback - self._pos[strPos]) < 10
+
+  def move(self, strPos, wait=False):
+    try:
+      m=self._mot
+    except AttributeError:
+      _log.info('simulated mode:{}'.format(strPos))
+      self._sim['pos']=strPos
+      return
+    m=self._mot
+    _log.debug("backlight to {}".format(strPos))
+    target=self._pos[strPos]
+    m.move(target, ignore_limits=True, wait=wait)
+
+
+
+if __name__ == "__main__":
+  import time,os
+  import argparse
+  logging.basicConfig(level=logging.DEBUG,format='%(levelname)s:%(module)s:%(lineno)d:%(funcName)s:%(message)s ')
+
+  parser = argparse.ArgumentParser()
+  parser.add_argument('-m', '--mode', help='mode string with characters: "frgbka" for front,red,green,blue,back,all')
+  parser.add_argument("-t", "--test", help="test sequence", action="store_true")
+
+  args = parser.parse_args()
+  os.environ['EPICS_CA_ADDR_LIST'] = '129.129.244.255 sf-saresc-cagw.psi.ch:5062 sf-saresc-cagw.psi.ch:5066'
+
+  _log.debug(args)
+  bl = Backlight()
+  if args.test:
+    bl.move('in')
+    time.sleep(2)
+    bl.move('out')
+    time.sleep(2)
+    bl.move('in')
+    time.sleep(2)
+    bl.move('out')
+    time.sleep(2)