def checkName(name, timeout=None, retries=None):
"""
usage: checkName("xxx:m1.VAL", timeout=None, retries=None)
Intended for internal use by ca_util functions.
"""
global cadict, defaultTimeout, defaultRetries
if not name:
raise ca_utilException, EXCEPTION_NULL_NAME
return
if ((timeout == None) and (defaultTimeout != None)): timeout = defaultTimeout
if (timeout == "NONE"): timeout = None
if ((retries == None) and (defaultRetries != None)): retries = defaultRetries
if ((retries == None) or (retries == "NONE")): retries = 0
tries = 0
while (not cadict.has_key(name)) and (tries <= retries):
# Make a new entry in the PV-name dictionary
try:
channel = CaChannel.CaChannel()
if (timeout != None): channel.setTimeout(timeout)
channel.searchw(name)
cadict[name] = cadictEntry(channel)
except CaChannel.CaChannelException, status:
del channel
tries += 1
def main():
try:
chan = CaChannel()
print("search_and_connect")
chan.search_and_connect('catest', connectCb)
chan.flush_io()
for i in range(20):
chan.pend_event()
print("put_callback")
chan.array_put_callback(3.3, None, None, putCb)
chan.flush_io()
for i in range(20):
chan.pend_event()
print("get_callback")
chan.array_get_callback(None, None, getCb1)
chan.flush_io()
for i in range(20):
chan.pend_event()
print("get_callback with status")
chan.array_get_callback(ca.dbf_type_to_DBR_CTRL(chan.field_type()), None, getCb2)
chan.flush_io()
for i in range(20):
chan.pend_event()
except CaChannelException as status:
print(ca.message(status))
try:
cawave = CaChannel()
print("cawave: search_and_connect")
cawave.search_and_connect('cawave', connectCb)
cawave.flush_io()
for i in range(20):
cawave.pend_event()
print("cawave: array_put_callback")
l = [0,1,2,3,4,5,6,7,8,9]
cawave.array_put_callback(l, None, None, putCb)
cawave.flush_io()
for i in range(20):
cawave.pend_event()
print("cawave: array_get_callback")
cawave.array_get_callback(ca.dbf_type_to_DBR_CTRL(cawave.field_type()), None, getCb2)
cawave.flush_io()
for i in range(20):
cawave.pend_event()
except CaChannelException as status:
print(ca.message(status))
def checkName(name):
"""usage: checkName("xxx:m1.VAL")"""
if not cadict.has_key(name):
# Make a new entry in the PV-name dictionary
channel = CaChannel()
try:
channel.searchw(name)
except CaChannelException, status:
print "checkName: CaChannel exception, status=", status
raise CaChannelException, status
return
cadict[name] = [channel, 0] # [channel, callback_flag]
def testConnect(pv):
'''Tests if a CaChannel connection can be established to "pv"
@param pv:[string]
@return: True if can connect, otherwise False'''
result = False
if not IMPORTED_CACHANNEL:
return result
try:
#print 'testConnect:', type(pv), pv
chan = CaChannel.CaChannel()
chan.searchw(str(pv))
# val = chan.getw()
del chan
result = True
except (TypeError, CaChannel.CaChannelException), status:
# python3: (TypeError, CaChannel.CaChannelException) as status
#print 'testConnect:', status
pass
def main():
try:
cawave = CaChannel()
cawave.searchw('cawave')
t = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
19)
l = []
for i in range(0, 500):
l.append(i)
#cawave.array_put(t)
#cawave.pend_io()
cawave.putw(l)
print(cawave.getw())
cawave.add_masked_array_event(None, None, ca.DBE_VALUE, getCallback, 0)
cawave.pend_event()
#cawave.clear_event()
except CaChannelException as status:
print(ca.message(status))
def connectw(self):
'''initiate the connection with EPICS, standard wait for the connection'''
if IMPORTED_CACHANNEL:
if len(self.pv) > 0:
self.chan = CaChannel.CaChannel()
self.chan.searchw(str(self.pv))
def connect(self):
'''initiate the connection with EPICS'''
if IMPORTED_CACHANNEL:
if len(self.pv) > 0:
self.chan = CaChannel.CaChannel()
self.chan.search(str(self.pv))
from CaChannel import * import time FastScan = 'X15U1:test:scan1' SlowScan = 'X15U1:test:scan2' ######this is should be changed SISPrefix = 'X15USIS:' FastMotor = 'X15U1:EH:MAN1:X' SlowMotor = 'X15U1:EH:MAN7:Z' xMAPPrefix = '15UdxpXMAP:' FileName = 'Scan11' ##### this is should be changed, the better way is the same as the file name of savedata FastSpeed = 1.0 SlowSpeed = 0.15 NumSlow=CaChannel() NumFast=CaChannel() xmapPixels=CaChannel() sisEraseStart=CaChannel() sisPixels=CaChannel() sisPreScale=CaChannel() xmapEraseStart=CaChannel() xmapState=CaChannel() FastScanBusy=CaChannel() netCDFSaveMode=CaChannel() netCDFNumCapture=CaChannel() netCDFEnable=CaChannel() netCDFCapture=CaChannel() netCDFFileName=CaChannel() netCDFFileNumber=CaChannel() Zmotor=CaChannel()
