#==============================================================================

# command action response

#==============================================================================

class CAR:

IDLE = 0

PAUSED = 1

BUSY = 2

ERROR = 3

def __init__ (self,pvname):

try:

self.val = pythonCA.new(pvname+'.VAL')

self.omss = pythonCA.new(pvname+'.OMSS')

self.omss.sync()

self.val.monitor(state)

except pythonCA.IOerror:

print "error creating CAR"

raise InitError

def state(self):

if self.val == CAR.IDLE:

pass

elif self.val == CAR.PAUSED:

print "paused"

elif self.val == CAR.BUSY:

print "busy"

elif self.val == CAR.ERROR:

print "error:",self.omss.get()

def busy(self):

if self.val == CAR.BUSY:

return 1

elif self.val == CAR.IDLE:

return 0

else

raise actionError