#!/usr/bin/env python
from __future__ import print_function
from pvaccess import Channel
print('****************************')
print('Testing union')
c = Channel('exampleRegularUnion')
pv = c.get()
print("original value", pv)
isVariant = pv.isUnionVariant()
if isVariant == True:
print(channelName, "is not a regular union")
exit
print("union introspection: ")
print(pv.getStructureDict())
names = pv.getUnionFieldNames()
print("union fieldNames", names)
value = pv.selectUnionField(names[0])
value.setString("new value")
value = pv.getUnion()
print("putting", pv)
c.put(pv)
pv = c.get()
print("received", pv)
print("value:", pv.get())
value = pv.selectUnionField(names[1])
print('selected field: ', pv.getSelectedUnionFieldName())
value.setScalarArray(["aaaa", "bbbbb", "ccccc"])
self.startTime = None
def updateServer(self, x):
t = time.time()
self.server.update(x)
self.received += 1
id = x['ArrayId']
if not self.prevId:
self.startTime = t
if self.prevId:
missed = id - self.prevId - 1
self.missed += missed
dt = t - self.prevTime
currentRate = 1.0/dt
if self.received % 1000 ==0:
deltaT = t - self.startTime
averageArrayRate = self.received/deltaT
print('Runtime: %.3f [s], Received Arrays: %s, Missed Arrays: %s, Missed Arrays Since Last: %s, Current Array Rate: %.3f [Hz], Average Array Rate: %.3f [Hz]' % (deltaT, self.received, self.missed, missed, currentRate, averageArrayRate))
self.prevId = id
self.prevTime = t
c = Channel('server1_data')
pv = c.get('')
s = PvaServer('server2_data', pv)
updater = ServerUpdater(s)
c.monitor(updater.updateServer, '')
time.sleep(100)
#!/usr/bin/env python
from pvaccess import Channel
chan = Channel('PVRdouble')
str1 = 'value=' + '20'
str2 = '{"timeStamp":{"userTag":"30"}}'
args = [str1, str2]
chan.parsePut(args, "value,timeStamp", True)
result = chan.get("value,timeStamp")
print(result)
#!/usr/bin/env python
from __future__ import print_function
from pvaccess import Channel
print('****************************')
print('Testing string')
c = Channel('string01')
oldValue = c.get().getString()
print('Got old value: ', oldValue)
value = oldValue + '; a'
print('Putting value: ', value)
c.putString(value)
newValue = c.get().getString()
print('Got new value: ', newValue)
assert newValue == value
value = oldValue + '; b'
print('Putting value: ', value)
c.put(value)
newValue = c.get().getString()
print('Got new value: ', newValue)
assert newValue == value
print()
print('****************************')
print('Testing byte')
c = Channel('byte01')
oldValue = ord(c.get().getByte())
print('Got old value: ', oldValue)
#!/usr/bin/env python
from __future__ import print_function
from pvaccess import Channel
print('****************************')
print('Testing union')
c = Channel('exampleRegularUnion')
pv = c.get()
print("original value",pv)
isVariant = pv.isUnionVariant()
if isVariant==True :
print(channelName,"is not a regular union")
exit
print("union introspection: ")
print(pv.getStructureDict())
names = pv.getUnionFieldNames()
print("union fieldNames",names)
value = pv.selectUnionField(names[0])
value.setString("new value")
value = pv.getUnion()
print("putting",pv)
c.put(pv)
pv = c.get()
print("received",pv)
print("value:",pv.get())
value = pv.selectUnionField(names[1])
print('selected field: ', pv.getSelectedUnionFieldName())
value.setScalarArray(["aaaa","bbbbb","ccccc"])
import time
from pvaccess import PvObject, PvaServer, INT, Channel
def echo(x):
print('Got value: %s' % x)
data = PvObject({'value': INT}, {'value': 1})
data2 = PvObject({'value': INT}, {'value': 2})
print("Starting Server")
server = PvaServer('foo', data, echo)
channel = Channel('foo')
print("Attempting get")
print(channel.get())
print("Attempting put")
channel.put(data2)
print("Put done")
print(channel.get())
print("Stopping server")
server.stop()
time.sleep(3)
print("Starting server")
server.start()
time.sleep(3)
print("Attempting get")
if self.nReceived % 10 == 0:
currentTime = time.time()
deltaT = currentTime - self.startTime
self.receiveRateHz = self.nReceived / deltaT
self.percentageMissed = self.nMissed / (self.nReceived +
self.nMissed) * 100.0
if self.nReceived % 10 == 0:
print(self.toString())
if __name__ == '__main__':
RUNTIME = 60
channelName = 'X1'
c = Channel(channelName)
print('CONNECT TO %s:\n%s\n' % (channelName, c.get()))
m = ScaleMonitor(channelName)
c.subscribe('m', m.monitor)
# Monitor
print('STARTING MONITOR for X1\n')
c.startMonitor()
time.sleep(10)
print('SUBSCRIBE M2 for X1\n')
c.subscribe('m2', m.monitor2)
time.sleep(10)
c.unsubscribe('m2')
print('UNSUBSCRIBE M2 for X1\n')
time.sleep(10)
print('SUBSCRIBE M2 for X1\n')
from pvaccess import Channel, PvAlarm
channel = Channel('PVRdouble')
alarm = PvAlarm(1, 2, "message")
print('alarm=', alarm)
channel.put(alarm, 'alarm')
print('after put alarm value\n', channel.get('alarm'))
alarm = PvAlarm(0, 0, "")
print('alarm=', alarm)
channel.put(alarm, 'alarm')
print('after put alarm value/n', channel.get('alarm'))
from pvaccess import Channel, CA, PvTimeStamp, PvAlarm
channel = Channel('PVRdouble')
print('start value=', channel.get('value,alarm,timeStamp'))
for i in range(5):
channel.put(i)
print('after put value=', channel.get())
#!/usr/bin/env python
from pvaccess import Channel
name = "PVRbyte"
chan = Channel(name)
str1 = 'value=' + '20'
args = [str1]
chan.parsePut(args, "value", True)
result = chan.get("value")
print(result)
name = "PVRstring"
chan = Channel(name)
str1 = 'value=' + '"this is a string"'
args = [str1]
chan.parsePut(args, "value", True)
result = chan.get("value")
print(result)
name = "PVRenum"
chan = Channel(name)
str1 = 'value=' + 'one'
args = [str1]
chan.parsePut(args, "value", False)
result = chan.get("value,alarm,timeStamp")
print(result)
name = "PVRBigRecord"
chan = Channel(name)
str1 = 'scalar.double.value=' + '10'
