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#!/usr/bin/env python
import epics
import time
import sys
import getopt
def show_usage():
s = """Usage caget.py [options] <PV name> ...
-h: show this message
"""
print s
sys.exit()
opts, args = getopt.getopt(sys.argv[1:], "htansd:#:e:f:g:w:",
["help", "terse","wide","number","data=",])
wait_time = 1.0
arr_num = None
format = None
terse = False
use_ts = False
dbr_type = None
enum_as_num = False
for (k,v) in opts:
if k in ("-h", "--help"): show_usage()
elif k == '-t': terse = True
elif k == '-a': use_ts = True
elif k == '-n': enum_as_num = True
elif k == '-d': dbr_type = int(v)
elif k == '-#': arr_num = int(v)
elif k == '-w': wait_time= float(v)
elif k == '-e': format = '%%.%ie' % int(v)
elif k == '-f': format = '%%.%if' % int(v)
elif k == '-g': format = '%%.%ig' % int(v)
elif k == '-s': format = 'STRING'
for pvname in args:
form='native'
if use_ts: form = 'time'
pv = epics.PV(pvname,form=form)
# pv connection
t0 = time.time()
pv.connect()
while time.time()-t0 < wait_time:
if pv.connected: break
epics.poll()
if not pv.connected:
print "%s:: not connected" % pvname
ox = pv.get_ctrlvars()
epics.poll()
value = pv.get(as_string=format=='STRING')
if pv.type == 'enum' and not enum_as_num:
enum_strs = pv.enum_strs
value = enum_strs[pv.get()]
outstring = ''
if not terse: outstring = pvname
if use_ts:
ts = epics.dbr.EPICS2UNIX_EPOCH + pv._args['timestamp']
outstring = "%s %s" %(outstring,time.ctime(ts))
print ts
print outstring, value
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