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import logging
import tango
from tango.server import Device
from tango.server import attribute, command
class IfchangeServer(Device):
def init_device(self):
Device.init_device(self)
logging.basicConfig(level=logging.DEBUG)
self._current = 0.0
self.set_state(tango.DevState.ON)
@attribute(label="Sequence Counter", dtype="int", description="Sequence counter")
def seq_counter(self):
return 456
@attribute(label="Voltage", dtype="float", description="voltage")
def volts(self):
return 3.142
def read_current(self):
print("read current method ", self._current)
return self._current
def write_current(self, curr):
self._current = curr
print("set current to ", self._current)
def start(self, argin):
print("start method")
return 3142
@command(dtype_in=str, doc_in="name of dynamic attribute to add")
def add_dyn_attr(self, name):
attr = attribute(
name=name, dtype="float", fget=self.read_current, fset=self.write_current
)
self.add_attribute(attr)
@command(dtype_in=str, doc_in="name of dynamic attribute to delete")
def delete_dyn_attr(self, name):
self._remove_attribute(name)
@command
def add_dyn_cmd(self):
device_level = True
cmd = command(
f=self.start,
dtype_in=str,
dtype_out=int,
doc_in="description of input",
doc_out="description of output",
display_level=tango.DispLevel.EXPERT,
polling_period=5100,
)
self.add_command(cmd, device_level)
@command(dtype_in=str, doc_in="name of dynamic command to delete")
def delete_dyn_cmd(self, name):
self._remove_command(name, False, True)
# ----------
# Run server
# ----------
if __name__ == "__main__":
IfchangeServer.run_server()
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