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With a simple Signal

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This commit is contained in:
Mohacsi Istvan 2022-11-29 17:00:56 +01:00
parent e044d7f8ab
commit 3e5c951a14
1 changed files with 13 additions and 48 deletions
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61
ophyd_devices/epics/devices/specMotors.py
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@ -17,7 +17,7 @@ from ophyd import (
PseudoPositioner,
PseudoSingle,
PVPositioner,
Device,
Device, Signal,
Component,
DynamicDeviceComponent,
Kind,
@ -206,41 +206,19 @@ class EnergyKev(VirtualEpicsSignalRO):
return E_keV
class CombinedEpicsSignalRO(EpicsSignalRO):
"""This is a test class to create derives signals from one or
multiple original signals...
"""
class CurrentSum(Signal):
"""Adds up four current signals from the parent"""
def __init__(self, *args, **kwargs):
if "pvs" in kwargs:
self._private_signals = []
for key in kwargs["pvs"]:
self.__dict__[key] = EpicsSignalRO(kwargs["pvs"][key], auto_monitor=True)
self._private_signals.append(key)
del kwargs["pvs"]
super().__init__(*args, **kwargs)
self.parent.ch1.subscribe(self._emit_value)
def wait_for_connection(self, *args, **kwargs):
for key in self._private_signals:
print(key)
self.__dict__[key].wait_for_connection()
def calc(self, vals: list):
return vals
def _emit_value(self, **kwargs):
timestamp = kwargs.pop("timestamp", time.time())
self.wait_for_connection()
self._run_subs(sub_type='value', timestamp=timestamp, obj=self)
def get(self, *args, **kwargs):
raw = [self.__dict__[key].value for key in self._private_signals]
print(raw)
return self.calc(raw)
class SumPvs(CombinedEpicsSignalRO):
"""Adds up four current signals"""
def calc(self, vals):
total = 0
for vv in vals:
total += vv
total = self.parent.ch1.get() + self.parent.ch2.get() + self.parent.ch3.get() + self.parent.ch4.get()
return total
@ -252,27 +230,14 @@ class Bpm4i(Device):
ch2 = Component(EpicsSignalRO, "S3", auto_monitor=True, kind=Kind.omitted, name="ch2")
ch3 = Component(EpicsSignalRO, "S4", auto_monitor=True, kind=Kind.omitted, name="ch3")
ch4 = Component(EpicsSignalRO, "S5", auto_monitor=True, kind=Kind.omitted, name="ch4")
sum = Component(CurrentSum, kind=Kind.hinted, name="sum", )
def __init__(self, prefix="", *, name, **kwargs):
super().__init__(prefix, name=name, **kwargs)
self.ch1.subscribe(self._emit_value)
def _emit_value(self, **kwargs):
timestamp = kwargs.pop("timestamp", time.time())
self.wait_for_connection()
self._run_subs(sub_type=self.SUB_VALUE, timestamp=timestamp, obj=self)
def get(self, *args, **kwargs):
return self.ch1.get() + self.ch2.get() + self.ch3.get() + self.ch4.get()
def read(self, *args, **kwargs):
return {self.name: {"value": self.get(), "timestamp": time.time()}}
if __name__ == "__main__":
# dut = SumPvs("X12SA-OP1-SCALER.S2", pvs={"q1": "X12SA-OP1-SCALER.S2", "q2": "X12SA-OP1-SCALER.S3", "q3": "X12SA-OP1-SCALER.S4", "q4": "X12SA-OP1-SCALER.S5"}, name="sum_all")
# dut.wait_for_connection()
# print(dut.read())
dut = Bpm4i("X12SA-OP1-SCALER.", name="bpm4i")
dut = Bpm4i("X12SA-OP1-SCALER.", name="bpm4")
dut.wait_for_connection()
print(dut.read())
print(dut.describe())