Functions imported directly from libca.
 
See http://he3.dartmouth.edu/manuals/CAref.html for detailed documentation
of the functions below.
 
Actually, see http://www.aps.anl.gov/epics/base/R3-14/8-docs/CAref.html
 
This module is a thin wrapper over the cadef.h file to be found in
    /dls_sw/epics/R3.14.8.2/base/include/cadef.h

Modules
		ctypes

Classes
		_ctypes.Structure(_ctypes._CData) ca_connection_handler_args event_handler_args exception_handler_args exceptions.Exception CAException Disconnected   class CAException(exceptions.Exception)     Exception in response to calling ca_ method.     Methods defined here: __init__(self, status, function) __str__(self) Methods inherited from exceptions.Exception: __getitem__(...)   class Disconnected(exceptions.Exception)     The channel is disconnected.     Methods defined here: __init__(self, chid) __str__(self) Methods inherited from exceptions.Exception: __getitem__(...)   class ca_connection_handler_args(_ctypes.Structure)     # Connection handler, used to report channel connection status.     Method resolution order: ca_connection_handler_args _ctypes.Structure _ctypes._CData __builtin__.object Data and other attributes defined here: __dict__ = <dictproxy object> dictionary for instance variables (if defined) __weakref__ = <attribute '__weakref__' of 'ca_connection_handler_args' objects> list of weak references to the object (if defined) chid = <Field type=c_void_p, ofs=0, size=4> Structure/Union member op = <Field type=c_long, ofs=4, size=4> Structure/Union member Methods inherited from _ctypes.Structure: __init__(...) x.__init__(...) initializes x; see x.__class__.__doc__ for signature Data and other attributes inherited from _ctypes.Structure: __new__ = <built-in method __new__ of _ctypes.StructType object> T.__new__(S, ...) -> a new object with type S, a subtype of T Methods inherited from _ctypes._CData: __ctypes_from_outparam__(...) __hash__(...) x.__hash__() <==> hash(x)   class event_handler_args(_ctypes.Structure)     # Event handler for ca_array_get_callback, ca_array_put_callback, # ca_create_subscription.  The event handler is called when the action # completes or the data is available.     Method resolution order: event_handler_args _ctypes.Structure _ctypes._CData __builtin__.object Data and other attributes defined here: __dict__ = <dictproxy object> dictionary for instance variables (if defined) __weakref__ = <attribute '__weakref__' of 'event_handler_args' objects> list of weak references to the object (if defined) chid = <Field type=c_long, ofs=4, size=4> Structure/Union member count = <Field type=c_long, ofs=12, size=4> Structure/Union member raw_dbr = <Field type=c_void_p, ofs=16, size=4> Structure/Union member status = <Field type=c_long, ofs=20, size=4> Structure/Union member type = <Field type=c_long, ofs=8, size=4> Structure/Union member usr = <Field type=py_object, ofs=0, size=4> Structure/Union member Methods inherited from _ctypes.Structure: __init__(...) x.__init__(...) initializes x; see x.__class__.__doc__ for signature Data and other attributes inherited from _ctypes.Structure: __new__ = <built-in method __new__ of _ctypes.StructType object> T.__new__(S, ...) -> a new object with type S, a subtype of T Methods inherited from _ctypes._CData: __ctypes_from_outparam__(...) __hash__(...) x.__hash__() <==> hash(x)   class exception_handler_args(_ctypes.Structure)     # Exception handler, called to report asynchronous errors that have no other # report path.     Method resolution order: exception_handler_args _ctypes.Structure _ctypes._CData __builtin__.object Data and other attributes defined here: __dict__ = <dictproxy object> dictionary for instance variables (if defined) __weakref__ = <attribute '__weakref__' of 'exception_handler_args' objects> list of weak references to the object (if defined) addr = <Field type=c_void_p, ofs=16, size=4> Structure/Union member chid = <Field type=c_void_p, ofs=4, size=4> Structure/Union member count = <Field type=c_long, ofs=12, size=4> Structure/Union member ctx = <Field type=c_char_p, ofs=28, size=4> Structure/Union member lineNo = <Field type=c_long, ofs=36, size=4> Structure/Union member op = <Field type=c_long, ofs=24, size=4> Structure/Union member pFile = <Field type=c_char_p, ofs=32, size=4> Structure/Union member stat = <Field type=c_long, ofs=20, size=4> Structure/Union member type = <Field type=c_long, ofs=8, size=4> Structure/Union member usr = <Field type=c_void_p, ofs=0, size=4> Structure/Union member Methods inherited from _ctypes.Structure: __init__(...) x.__init__(...) initializes x; see x.__class__.__doc__ for signature Data and other attributes inherited from _ctypes.Structure: __new__ = <built-in method __new__ of _ctypes.StructType object> T.__new__(S, ...) -> a new object with type S, a subtype of T Methods inherited from _ctypes._CData: __ctypes_from_outparam__(...) __hash__(...) x.__hash__() <==> hash(x)

Functions
		convert_py_object(object, function, args) # We set things up so that the data type returned by ca_puser() below is a # Python object (to be precise, the argument passed in to ca_create_channel), # but this means that we need to get the reference counting right. #    The ctypes library assumes when a routine returns a py_object type that # the called routine has already incremented the object's reference count. # If the object is just a void* then this isn't going to be so: this routine # when assigned to errcheck will resolve this problem. expect_ECA_NORMAL(status, function, args) # For routines which are simply expected to succeed this routine should be # assigned to the routine's errcheck attribute. expect_connected(sentinel, chid=0) sentinel is the disconnected notification value to check for, and chid is the position in the argument list of the channel being inspected.

Data
		CA_OP_ADD_EVENT = 3 CA_OP_CLEAR_EVENT = 4 CA_OP_CONN_DOWN = 7 CA_OP_CONN_UP = 6 CA_OP_CREATE_CHANNEL = 2 CA_OP_GET = 0 CA_OP_OTHER = 5 CA_OP_PUT = 1 DBE_ALARM = 4 DBE_LOG = 2 DBE_VALUE = 1 ECA_16KARRAYCLIENT = 464 ECA_ADDFAIL = 168 ECA_ALLOCMEM = 48 ECA_ANACHRONISM = 386 ECA_BADCHID = 410 ECA_BADCOUNT = 176 ECA_BADFUNCPTR = 418 ECA_BADMASK = 330 ECA_BADMONID = 242 ECA_BADPRIORITY = 450 ECA_BADSTR = 186 ECA_BADSYNCGRP = 354 ECA_BADTYPE = 114 ECA_BUILDGET = 216 ECA_CHANDESTROY = 440 ECA_CHIDNOTFND = 123 ECA_CHIDRETRY = 131 ECA_CONN = 40 ECA_CONNSEQTMO = 472 ECA_DBLCHNL = 200 ECA_DBLCLFAIL = 144 ECA_DEFUNCT = 278 ECA_DISCONN = 192 ECA_DISCONNCHID = 106 ECA_DLCKREST = 304 ECA_EMPTYSTR = 280 ECA_EVDISALLOW = 210 ECA_GETFAIL = 152 ECA_INTERNAL = 142 ECA_IODONE = 339 ECA_IOINPROGRESS = 347 ECA_ISATTACHED = 424 ECA_MAXIOC = 10 ECA_NEEDSFP = 224 ECA_NEWADDR = 248 ECA_NEWCONN = 259 ECA_NOCACTX = 264 ECA_NOCAST = 320 ECA_NOCHANMSG = 296 ECA_NOCONVERT = 400 ECA_NORDACCESS = 368 ECA_NOREPEATER = 288 ECA_NORMAL = 1 ECA_NOSEARCHADDR = 392 ECA_NOSUPPORT = 88 ECA_NOTTHREADED = 458 ECA_NOWTACCESS = 376 ECA_OVEVFAIL = 232 ECA_PUTCBINPROG = 362 ECA_PUTFAIL = 160 ECA_SERVBEHIND = 312 ECA_SOCK = 34 ECA_STRTOBIG = 96 ECA_TIMEOUT = 80 ECA_TOLARGE = 72 ECA_UKNCHAN = 56 ECA_UKNFIELD = 64 ECA_UKNHOST = 18 ECA_UKNSERV = 26 ECA_UNAVAILINSERV = 432 ECA_UNRESPTMO = 480 TYPENOTCONN = -1 ca_add_exception_event = <_FuncPtr object> ca_add_fd_registration = <_FuncPtr object> ca_array_get_callback = <_FuncPtr object> ca_array_put = <_FuncPtr object> ca_array_put_callback = <_FuncPtr object> ca_attach_context = <_FuncPtr object> ca_clear_channel = <_FuncPtr object> ca_clear_subscription = <_FuncPtr object> ca_context_create = <_FuncPtr object> ca_context_destroy = <_FuncPtr object> ca_create_channel = <_FuncPtr object> ca_create_subscription = <_FuncPtr object> ca_current_context = <_FuncPtr object> ca_element_count = <_FuncPtr object> ca_field_type = <_FuncPtr object> ca_flush_io = <_FuncPtr object> ca_message = <_FuncPtr object> ca_name = <_FuncPtr object> ca_pend_event = <_FuncPtr object> ca_puser = <_FuncPtr object> ca_state = <_FuncPtr object> cs_closed = 3 cs_conn = 2 cs_never_conn = 0 cs_prev_conn = 1 libca = <CDLL '/dls_sw/epics/R3.14.8.2/base/lib/linux-x86/libca.so', handle 9c04fc8 at b7d1298c>