ultrasound: change control roi0 to a Readable (2)

+ remove cfg/PEUS.py
+ fix equipment_id of PEUS
+ add header to frappy_psi.iqplot

frappy_psi/iqplot.py

@@ -1,8 +1,25 @@
-"""
-Created on Tue Feb  4 11:07:56 2020
-
-@author: tartarotti_d-adm
-"""
+# *****************************************************************************
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# Module authors:
+#   Damaris Tartarotti Maimone
+#   Markus Zolliker <markus.zolliker@psi.ch>
+#
+# *****************************************************************************
+"""support for ultrasound plot clients"""
 
 import numpy as np
 import matplotlib.pyplot as plt

frappy_psi/ultrasound.py

@@ -83,10 +83,8 @@ class Roi(Readable):
         return Done
 
 
-class ControlRoi(Roi, Writable):
+class ControlRoi(Roi, Readable):
     freq = Attached()
-    # target is not releavnt -> always moving to I to zero
-    target = Parameter(datatype=Roi.value.datatype, export=False)
     maxstep = Parameter('max frequency step', FloatRange(unit='Hz'), readonly=False,
                         default=10000)
     minstep = Parameter('min frequency step for slope calculation', FloatRange(unit='Hz'),
@@ -122,10 +120,6 @@ class ControlRoi(Roi, Writable):
         elif self.control_active:
             self._freq_target = self.freq.write_target(clamp(freq - self.maxstep, newfreq, freq + self.maxstep))
 
-    def write_target(self, value):
-        self.control_active = True
-        return 0
-
 
 class Pars(Module):
     description = 'relevant parameters from SEA'