using libmodbus with python ctypes

You don't handle correctly the types of data because device and parity are strings and baud and slave must be integers so something is certainly wrong in your modbus_ctypes.

It appears i'd not installed (`sudo make install`) the latest version of libmodbus.

This is the working code, which prints the uptime, in seconds of Wattnode Modbus meter.

from ctypes import *
from modbus_ctypes import *
try:
    cdll.LoadLibrary("libmodbus.so")
except:
    print "Unable to load libmodbus.so"
    exit(0)

def main():
    mb = CDLL("libmodbus.so")
    mb_param = modbus_param_t()
    tab_rp_registers = c_uint16()

    bauds = c_int(9600)
    slave = c_int(1)
    bits = c_int(8)
    stop_bits = c_int(1)
    device = c_char_p("/dev/ttyUSB0")
    parity = c_char_p("none")

    mb.modbus_init_rtu(byref(mb_param), device, bauds, parity, bits, stop_bits, slave)
    mb.modbus_set_slave(byref(mb_param), 1)
    mb.modbus_set_debug(byref(mb_param), True)
    mb.modbus_connect(byref(mb_param))
    mb.read_holding_registers(byref(mb_param), 1702, 2, byref(tab_rp_registers));
    val = mb.modbus_read_float(byref(tab_rp_registers))
    print val
    print 'done.'
    mb.modbus_close(byref(mb_param))

if __name__ == '__main__':
    main()

Great, could you share your code (ctypes), please?

I am also very interested in the modbus_ctypes module. Can you either post it here?

This is autogenerated using h2xml.py and xml2py.py scripts
as outlined here: http://starship.python.net/crew/theller/ctypes/old/codegen.html

The file generated by me is below
-------

from ctypes import *

STRING = c_char_p

IPPORT_SMTP = 25
IPPORT_CMDSERVER = 514
IPPORT_EXECSERVER = 512
IPPORT_FINGER = 79
IPPORT_NAMESERVER = 42
IPPORT_DAYTIME = 13
IPPROTO_DCCP = 33
SCM_CREDENTIALS = 2
IPPROTO_IGMP = 2
IPPROTO_FRAGMENT = 44
MSG_SYN = 1024
IPPROTO_RSVP = 46
SCM_RIGHTS = 1
MSG_CONFIRM = 2048
IPPROTO_NONE = 59
FLUSH_OR_CONNECT_ON_ERROR = 0
IPPORT_USERRESERVED = 5000
TCP_CA_CWR = 2
TCP_FIN_WAIT1 = 4
TCP_TIME_WAIT = 6
IPPORT_WHOIS = 43
IPPROTO_ROUTING = 43
MSG_NOSIGNAL = 16384
SHUT_RD = 0
IPPROTO_DSTOPTS = 60
IPPROTO_HOPOPTS = 0
TCP_LAST_ACK = 9
IPPORT_RJE = 77
SHUT_RDWR = 2
IPPROTO_UDP = 17
TCP = 1
MSG_RST = 4096
IPPROTO_IPV6 = 41
IPPROTO_IPIP = 4
IPPORT_DISCARD = 9
TCP_CA_Open = 0
SOCK_NONBLOCK = 2048
IPPORT_SYSTAT = 11
TCP_CA_Loss = 4
IPPROTO_UDPLITE = 136
IPPROTO_AH = 51
IPPORT_RESERVED = 1024
SOCK_PACKET = 10
MSG_MORE = 32768
TCP_CLOSE = 7
SOCK_SEQPACKET = 5
IPPROTO_ESP = 50
IPPORT_NETSTAT = 15
MSG_PROXY = 16
IPPROTO_TP = 29
TCP_CLOSE_WAIT = 8
MSG_PEEK = 2
IPPROTO_GRE = 47
SOCK_CLOEXEC = 524288
SHUT_WR = 1
TCP_FIN_WAIT2 = 5
MSG_CTRUNC = 8
SOCK_STREAM = 1
MSG_TRUNC = 32
TCP_SYN_RECV = 3
IPPORT_WHOSERVER = 513
IPPROTO_ENCAP = 98
IPPORT_TELNET = 23
TCP_CA_Disorder = 1
MSG_DONTROUTE = 4
RTU = 0
IPPORT_TIMESERVER = 37
IPPROTO_IDP = 22
IPPROTO_ICMP = 1
SOCK_RDM = 4
IPPORT_SUPDUP = 95
IPPORT_MTP = 57
SOCK_DCCP = 6
IPPROTO_TCP = 6
IPPROTO_ICMPV6 = 58
MSG_DONTWAIT = 64
MSG_FIN = 512
MSG_EOR = 128
MSG_TRYHARD = 4
TCP_LISTEN = 10
IPPORT_LOGINSERVER = 513
IPPROTO_MTP = 92
MSG_WAITALL = 256
SOCK_DGRAM = 2
IPPROTO_PUP = 12
TCP_ESTABLISHED = 1
IPPROTO_PIM = 103
IPPORT_ECHO = 7
IPPROTO_MAX = 256
IPPORT_FTP = 21
IPPROTO_RAW = 255
TCP_CA_Recovery = 3
NOP_ON_ERROR = 1
IPPORT_ROUTESERVER = 520
IPPORT_TFTP = 69
IPPORT_EFSSERVER = 520
IPPROTO_IP = 0
TCP_SYN_SENT = 2
IPPORT_TTYLINK = 87
MSG_OOB = 1
TCP_CLOSING = 11
IPPROTO_SCTP = 132
MSG_CMSG_CLOEXEC = 1073741824
IPPROTO_COMP = 108
IPPROTO_EGP = 8
MSG_ERRQUEUE = 8192
SOCK_RAW = 3
IPPORT_BIFFUDP = 512

# values for enumeration 'type_com_t'
type_com_t = c_int # enum

# values for enumeration 'error_handling_t'
error_handling_t = c_int # enum
class modbus_param_t(Structure):
    pass
uint8_t = c_uint8
class termios(Structure):
    pass
tcflag_t = c_uint
cc_t = c_ubyte
speed_t = c_uint
termios._fields_ = [
    ('c_iflag', tcflag_t),
    ('c_oflag', tcflag_t),
    ('c_cflag', tcflag_t),
    ('c_lflag', tcflag_t),
    ('c_line', cc_t),
    ('c_cc', cc_t * 32),
    ('c_ispeed', speed_t),
    ('c_ospeed', speed_t),
]
modbus_param_t._fields_ = [
    ('slave', c_int),
    ('fd', c_int),
    ('type_com', type_com_t),
    ('debug', c_int),
    ('port', c_int),
    ('device', c_char * 16),
    ('baud', c_int),
    ('data_bit', uint8_t),
    ('stop_bit', uint8_t),
    ('parity', c_char * 5),
    ('error_handling', uint8_t),
    ('ip', c_char * 16),
    ('old_tios', termios),
]
class modbus_mapping_t(Structure):
    pass
uint16_t = c_uint16
modbus_mapping_t._fields_ = [
    ('nb_coil_status', c_int),
    ('nb_input_status', c_int),
    ('nb_input_registers', c_int),
    ('nb_holding_registers', c_int),
    ('tab_coil_status', POINTER(uint8_t)),
    ('tab_input_status', POINTER(uint8_t)),
    ('tab_input_registers', POINTER(uint16_t)),
    ('tab_holding_registers', POINTER(uint16_t)),
]
class ip_opts(Structure):
    pass
class in_addr(Structure):
    pass
uint32_t = c_uint32
in_addr_t = uint32_t
in_addr._fields_ = [
    ('s_addr', in_addr_t),
]
ip_opts._fields_ = [
    ('ip_dst', in_addr),
    ('ip_opts', c_char * 40),
]
class ip_mreqn(Structure):
    pass
ip_mreqn._fields_ = [
    ('imr_multiaddr', in_addr),
    ('imr_address', in_addr),
    ('imr_ifindex', c_int),
]
class in_pktinfo(Structure):
    pass
in_pktinfo._fields_ = [
    ('ipi_ifindex', c_int),
    ('ipi_spec_dst', in_addr),
    ('ipi_addr', in_addr),
]
pthread_t = c_ulong
class pthread_attr_t(Union):
    pass
pthread_attr_t._fields_ = [
    ('__size', c_char * 36),
    ('__align', c_long),
]
class __pthread_internal_slist(Structure):
    pass
__pthread_internal_slist._fields_ = [
    ('__next', POINTER(__pthread_internal_slist)),
]
__pthread_slist_t = __pthread_internal_slist
class __pthread_mutex_s(Structure):
    pass
class N15pthread_mutex_t17__pthread_mutex_s3DOT_5E(Union):
    pass
N15pthread_mutex_t17__pthread_mutex_s3DOT_5E._fields_ = [
    ('__spins', c_int),
    ('__list', __pthread_slist_t),
]
__pthread_mutex_s._anonymous_ = ['_0']
__pthread_mutex_s._fields_ = [
    ('__lock', c_int),
    ('__count', c_uint),
    ('__owner', c_int),
    ('__kind', c_int),
    ('__nusers', c_uint),
    ('_0', N15pthread_mutex_t17__pthread_mutex_s3DOT_5E),
]
class pthread_mutex_t(Union):
    pass
pthread_mutex_t._fields_ = [
    ('__data', __pthread_mutex_s),
    ('__size', c_char * 24),
    ('__align', c_long),
]
class pthread_mutexattr_t(Union):
    pass
pthread_mutexattr_t._fields_ = [
    ('__size', c_char * 4),
    ('__align', c_int),
]
class N14pthread_cond_t3DOT_8E(Structure):
    pass
N14pthread_cond_t3DOT_8E._pack_ = 4
N14pthread_cond_t3DOT_8E._fields_ = [
    ('__lock', c_int),
    ('__futex', c_uint),
    ('__total_seq', c_ulonglong),
    ('__wakeup_seq', c_ulonglong),
    ('__woken_seq', c_ulonglong),
    ('__mutex', c_void_p),
    ('__nwaiters', c_uint),
    ('__broadcast_seq', c_uint),
]
class pthread_cond_t(Union):
    pass
pthread_cond_t._pack_ = 4
pthread_cond_t._fields_ = [
    ('__data', N14pthread_cond_t3DOT_8E),
    ('__size', c_char * 48),
    ('__align', c_longlong),
]
class pthread_condattr_t(Union):
    pass
pthread_condattr_t._fields_ = [
    ('__size', c_char * 4),
    ('__align', c_int),
]
pthread_key_t = c_uint
pthread_once_t = c_int
class N16pthread_rwlock_t4DOT_11E(Structure):
    pass
N16pthread_rwlock_t4DOT_11E._fields_ = [
    ('__lock', c_int),
    ('__nr_readers', c_uint),
    ('__readers_wakeup', c_uint),
    ('__writer_wakeup', c_uint),
    ('__nr_readers_queued', c_uint),
    ('__nr_writers_queued', c_uint),
    ('__flags', c_ubyte),
    ('__shared', c_ubyte),
    ('__pad1', c_ubyte),
    ('__pad2', c_ubyte),
    ('__writer', c_int),
]
class pthread_rwlock_t(Union):
    pass
pthread_rwlock_t._fields_ = [
    ('__data', N16pthread_rwlock_t4DOT_11E),
    ('__size', c_char * 32),
    ('__align', c_long),
]
class pthread_rwlockattr_t(Union):
    pass
pthread_rwlockattr_t._fields_ = [
    ('__size', c_char * 8),
    ('__align', c_long),
]
pthread_spinlock_t = c_int
class pthread_barrier_t(Union):
    pass
pthread_barrier_t._fields_ = [
    ('__size', c_char * 20),
    ('__align', c_long),
]
class pthread_barrierattr_t(Union):
    pass
pthread_barrierattr_t._fields_ = [
    ('__size', c_char * 4),
    ('__align', c_int),
]
__sig_atomic_t = c_int
class __sigset_t(Structure):
    pass
__sigset_t._fields_ = [
    ('__val', c_ulong * 32),
]
sa_family_t = c_ushort
__socklen_t = c_uint
socklen_t = __socklen_t

# values for enumeration '__socket_type'
__socket_type = c_int # enum
class sockaddr(Structure):
    pass
sockaddr._fields_ = [
    ('sa_family', sa_family_t),
    ('sa_data', c_char * 14),
]
class sockaddr_storage(Structure):
    pass
sockaddr_storage._fields_ = [
    ('ss_family', sa_family_t),
    ('__ss_align', c_ulong),
    ('__ss_padding', c_char * 120),
]

# values for unnamed enumeration
class msghdr(Structure):
    pass
class iovec(Structure):
    pass
size_t = c_uint
msghdr._fields_ = [
    ('msg_name', c_void_p),
    ('msg_namelen', socklen_t),
    ('msg_iov', POINTER(iovec)),
    ('msg_iovlen', size_t),
    ('msg_control', c_void_p),
    ('msg_controllen', size_t),
    ('msg_flags', c_int),
]
class cmsghdr(Structure):
    pass
cmsghdr._fields_ = [
    ('cmsg_len', size_t),
    ('cmsg_level', c_int),
    ('cmsg_type', c_int),
    ('__cmsg_data', c_ubyte * 0),
]

# values for unnamed enumeration
class ucred(Structure):
    pass
__pid_t = c_int
pid_t = __pid_t
__uid_t = c_uint
uid_t = __uid_t
__gid_t = c_uint
gid_t = __gid_t
ucred._fields_ = [
    ('pid', pid_t),
    ('uid', uid_t),
    ('gid', gid_t),
]
class linger(Structure):
    pass
linger._fields_ = [
    ('l_onoff', c_int),
    ('l_linger', c_int),
]
class timeval(Structure):
    pass
__time_t = c_long
__suseconds_t = c_long
timeval._fields_ = [
    ('tv_sec', __time_t),
    ('tv_usec', __suseconds_t),
]
__u_char = c_ubyte
__u_short = c_ushort
__u_int = c_uint
__u_long = c_ulong
__int8_t = c_byte
__uint8_t = c_ubyte
__int16_t = c_short
__uint16_t = c_ushort
__int32_t = c_int
__uint32_t = c_uint
__int64_t = c_longlong
__uint64_t = c_ulonglong
__quad_t = c_longlong
__u_quad_t = c_ulonglong
__dev_t = __u_quad_t
__ino_t = c_ulong
__ino64_t = __u_quad_t
__mode_t = c_uint
__nlink_t = c_uint
__off_t = c_long
__off64_t = __quad_t
class __fsid_t(Structure):
    pass
__fsid_t._fields_ = [
    ('__val', c_int * 2),
]
__clock_t = c_long
__rlim_t = c_ulong
__rlim64_t = __u_quad_t
__id_t = c_uint
__useconds_t = c_uint
__daddr_t = c_int
__swblk_t = c_long
__key_t = c_int
__clockid_t = c_int
__timer_t = c_void_p
__blksize_t = c_long
__blkcnt_t = c_long
__blkcnt64_t = __quad_t
__fsblkcnt_t = c_ulong
__fsblkcnt64_t = __u_quad_t
__fsfilcnt_t = c_ulong
__fsfilcnt64_t = __u_quad_t
__ssize_t = c_int
__loff_t = __off64_t
__qaddr_t = POINTER(__quad_t)
__caddr_t = STRING
__intptr_t = c_int
iovec._fields_ = [
    ('iov_base', c_void_p),
    ('iov_len', size_t),
]

# values for unnamed enumeration
in_port_t = uint16_t

# values for unnamed enumeration
class in6_addr(Structure):
    pass
class N8in6_addr4DOT_20E(Union):
    pass
N8in6_addr4DOT_20E._fields_ = [
    ('__u6_addr8', uint8_t * 16),
    ('__u6_addr16', uint16_t * 8),
    ('__u6_addr32', uint32_t * 4),
]
in6_addr._fields_ = [
    ('__in6_u', N8in6_addr4DOT_20E),
]
class sockaddr_in(Structure):
    pass
sockaddr_in._fields_ = [
    ('sin_family', sa_family_t),
    ('sin_port', in_port_t),
    ('sin_addr', in_addr),
    ('sin_zero', c_ubyte * 8),
]
class sockaddr_in6(Structure):
    pass
sockaddr_in6._fields_ = [
    ('sin6_family', sa_family_t),
    ('sin6_port', in_port_t),
    ('sin6_flowinfo', uint32_t),
    ('sin6_addr', in6_addr),
    ('sin6_scope_id', uint32_t),
]
class ip_mreq(Structure):
    pass
ip_mreq._fields_ = [
    ('imr_multiaddr', in_addr),
    ('imr_interface', in_addr),
]
class ip_mreq_source(Structure):
    pass
ip_mreq_source._fields_ = [
    ('imr_multiaddr', in_addr),
    ('imr_interface', in_addr),
    ('imr_sourceaddr', in_addr),
]
class ipv6_mreq(Structure):
    pass
ipv6_mreq._fields_ = [
    ('ipv6mr_multiaddr', in6_addr),
    ('ipv6mr_interface', c_uint),
]
class group_req(Structure):
    pass
group_req._fields_ = [
    ('gr_interface', uint32_t),
    ('gr_group', sockaddr_storage),
]
class group_source_req(Structure):
    pass
group_source_req._fields_ = [
    ('gsr_interface', uint32_t),
    ('gsr_group', sockaddr_storage),
    ('gsr_source', sockaddr_storage),
]
class ip_msfilter(Structure):
    pass
ip_msfilter._fields_ = [
    ('imsf_multiaddr', in_addr),
    ('imsf_interface', in_addr),
    ('imsf_fmode', uint32_t),
    ('imsf_numsrc', uint32_t),
    ('imsf_slist', in_addr * 1),
]
class group_filter(Structure):
    pass
group_filter._fields_ = [
    ('gf_interface', uint32_t),
    ('gf_group', sockaddr_storage),
    ('gf_fmode', uint32_t),
    ('gf_numsrc', uint32_t),
    ('gf_slist', sockaddr_storage * 1),
]
class in6_pktinfo(Structure):
    pass
in6_pktinfo._fields_ = [
    ('ipi6_addr', in6_addr),
    ('ipi6_ifindex', c_uint),
]
class ip6_mtuinfo(Structure):
    pass
ip6_mtuinfo._fields_ = [
    ('ip6m_addr', sockaddr_in6),
    ('ip6m_mtu', uint32_t),
]
class timestamp(Structure):
    pass
u_int8_t = c_ubyte
u_int32_t = c_uint
timestamp._fields_ = [
    ('len', u_int8_t),
    ('ptr', u_int8_t),
    ('flags', c_uint, 4),
    ('overflow', c_uint, 4),
    ('data', u_int32_t * 9),
]
class iphdr(Structure):
    pass
u_int16_t = c_ushort
iphdr._fields_ = [
    ('ihl', c_uint, 4),
    ('version', c_uint, 4),
    ('tos', u_int8_t),
    ('tot_len', u_int16_t),
    ('id', u_int16_t),
    ('frag_off', u_int16_t),
    ('ttl', u_int8_t),
    ('protocol', u_int8_t),
    ('check', u_int16_t),
    ('saddr', u_int32_t),
    ('daddr', u_int32_t),
]
class ip(Structure):
    pass
u_short = __u_short
ip._fields_ = [
    ('ip_hl', c_uint, 4),
    ('ip_v', c_uint, 4),
    ('ip_tos', u_int8_t),
    ('ip_len', u_short),
    ('ip_id', u_short),
    ('ip_off', u_short),
    ('ip_ttl', u_int8_t),
    ('ip_p', u_int8_t),
    ('ip_sum', u_short),
    ('ip_src', in_addr),
    ('ip_dst', in_addr),
]
class ip_timestamp(Structure):
    pass
ip_timestamp._fields_ = [
    ('ipt_code', u_int8_t),
    ('ipt_len', u_int8_t),
    ('ipt_ptr', u_int8_t),
    ('ipt_flg', c_uint, 4),
    ('ipt_oflw', c_uint, 4),
    ('data', u_int32_t * 9),
]
class tcphdr(Structure):
    pass
tcphdr._fields_ = [
    ('source', u_int16_t),
    ('dest', u_int16_t),
    ('seq', u_int32_t),
    ('ack_seq', u_int32_t),
    ('res1', u_int16_t, 4),
    ('doff', u_int16_t, 4),
    ('fin', u_int16_t, 1),
    ('syn', u_int16_t, 1),
    ('rst', u_int16_t, 1),
    ('psh', u_int16_t, 1),
    ('ack', u_int16_t, 1),
    ('urg', u_int16_t, 1),
    ('res2', u_int16_t, 2),
    ('window', u_int16_t),
    ('check', u_int16_t),
    ('urg_ptr', u_int16_t),
]

# values for unnamed enumeration

# values for enumeration 'tcp_ca_state'
tcp_ca_state = c_int # enum
class tcp_info(Structure):
    pass
tcp_info._fields_ = [
    ('tcpi_state', u_int8_t),
    ('tcpi_ca_state', u_int8_t),
    ('tcpi_retransmits', u_int8_t),
    ('tcpi_probes', u_int8_t),
    ('tcpi_backoff', u_int8_t),
    ('tcpi_options', u_int8_t),
    ('tcpi_snd_wscale', u_int8_t, 4),
    ('tcpi_rcv_wscale', u_int8_t, 4),
    ('tcpi_rto', u_int32_t),
    ('tcpi_ato', u_int32_t),
    ('tcpi_snd_mss', u_int32_t),
    ('tcpi_rcv_mss', u_int32_t),
    ('tcpi_unacked', u_int32_t),
    ('tcpi_sacked', u_int32_t),
    ('tcpi_lost', u_int32_t),
    ('tcpi_retrans', u_int32_t),
    ('tcpi_fackets', u_int32_t),
    ('tcpi_last_data_sent', u_int32_t),
    ('tcpi_last_ack_sent', u_int32_t),
    ('tcpi_last_data_recv', u_int32_t),
    ('tcpi_last_ack_recv', u_int32_t),
    ('tcpi_pmtu', u_int32_t),
    ('tcpi_rcv_ssthresh', u_int32_t),
    ('tcpi_rtt', u_int32_t),
    ('tcpi_rttvar', u_int32_t),
    ('tcpi_snd_ssthresh', u_int32_t),
    ('tcpi_snd_cwnd', u_int32_t),
    ('tcpi_advmss', u_int32_t),
    ('tcpi_reordering', u_int32_t),
    ('tcpi_rcv_rtt', u_int32_t),
    ('tcpi_rcv_space', u_int32_t),
    ('tcpi_total_retrans', u_int32_t),
]
class tcp_md5sig(Structure):
    pass
tcp_md5sig._fields_ = [
    ('tcpm_addr', sockaddr_storage),
    ('__tcpm_pad1', u_int16_t),
    ('tcpm_keylen', u_int16_t),
    ('__tcpm_pad2', u_int32_t),
    ('tcpm_key', u_int8_t * 80),
]
int8_t = c_int8
int16_t = c_int16
int32_t = c_int32
int64_t = c_int64
uint64_t = c_uint64
int_least8_t = c_byte
int_least16_t = c_short
int_least32_t = c_int
int_least64_t = c_longlong
uint_least8_t = c_ubyte
uint_least16_t = c_ushort
uint_least32_t = c_uint
uint_least64_t = c_ulonglong
int_fast8_t = c_byte
int_fast16_t = c_int
int_fast32_t = c_int
int_fast64_t = c_longlong
uint_fast8_t = c_ubyte
uint_fast16_t = c_uint
uint_fast32_t = c_uint
uint_fast64_t = c_ulonglong
intptr_t = c_int
uintptr_t = c_uint
intmax_t = c_longlong
uintmax_t = c_ulonglong
sigset_t = __sigset_t
__fd_mask = c_long
class fd_set(Structure):
    pass
fd_set._fields_ = [
    ('fds_bits', __fd_mask * 32),
]
fd_mask = __fd_mask
class osockaddr(Structure):
    pass
osockaddr._fields_ = [
    ('sa_family', c_ushort),
    ('sa_data', c_ubyte * 14),
]

# values for unnamed enumeration
u_char = __u_char
u_int = __u_int
u_long = __u_long
quad_t = __quad_t
u_quad_t = __u_quad_t
fsid_t = __fsid_t
loff_t = __loff_t
ino_t = __ino_t
ino64_t = __ino64_t
dev_t = __dev_t
mode_t = __mode_t
nlink_t = __nlink_t
off_t = __off_t
off64_t = __off64_t
id_t = __id_t
ssize_t = __ssize_t
daddr_t = __daddr_t
caddr_t = __caddr_t
key_t = __key_t
useconds_t = __useconds_t
suseconds_t = __suseconds_t
ulong = c_ulong
ushort = c_ushort
uint = c_uint
u_int64_t = c_ulonglong
register_t = c_int
blksize_t = __blksize_t
blkcnt_t = __blkcnt_t
fsblkcnt_t = __fsblkcnt_t
fsfilcnt_t = __fsfilcnt_t
blkcnt64_t = __blkcnt64_t
fsblkcnt64_t = __fsblkcnt64_t
fsfilcnt64_t = __fsfilcnt64_t
clock_t = __clock_t
time_t = __time_t
clockid_t = __clockid_t
timer_t = __timer_t
class timespec(Structure):
    pass
timespec._fields_ = [
    ('tv_sec', __time_t),
    ('tv_nsec', c_long),
]
__all__ = ['__uint16_t', '__pthread_mutex_s', '__int16_t', 'uid_t',
           'modbus_mapping_t', 'FLUSH_OR_CONNECT_ON_ERROR',
           'IPPORT_RESERVED', 'MSG_PEEK', '__time_t',
           'pthread_condattr_t', 'uint_least32_t', 'in_pktinfo',
           'fsfilcnt_t', '__fsid_t', 'mode_t', 'MSG_DONTROUTE',
           'size_t', 'tcp_info', 'tcphdr', 'ip_timestamp',
           'SOCK_SEQPACKET', 'intptr_t', 'IPPROTO_IPIP',
           'TCP_SYN_SENT', 'gid_t', 'ino_t', 'IPPORT_EXECSERVER',
           'pthread_barrierattr_t', 'uint_least16_t',
           'IPPROTO_ICMPV6', 'IPPORT_ROUTESERVER', '__ino64_t',
           'fsblkcnt64_t', '__qaddr_t', 'IPPROTO_COMP', 'iphdr',
           'SOCK_DCCP', 'IPPROTO_FRAGMENT', 'off64_t', 'id_t',
           'blksize_t', 'uint_fast64_t', 'timestamp', 'int_least32_t',
           'MSG_CTRUNC', 'IPPROTO_RSVP', 'MSG_TRUNC', 'u_char',
           'dev_t', 'int32_t', 'SOCK_RDM', 'IPPROTO_AH', 'u_int64_t',
           'u_int16_t', 'IPPROTO_UDPLITE', 'TCP_CA_CWR', 'in_port_t',
           'MSG_RST', 'IPPORT_MTP', 'MSG_OOB', 'IPPORT_TTYLINK',
           'int_least16_t', 'TCP_CA_Loss', 'IPPORT_SMTP',
           'uint_fast16_t', 'sigset_t', '__int32_t', 'IPPROTO_MAX',
           'ip_mreqn', 'pthread_rwlock_t', 'IPPROTO_IP', '__nlink_t',
           '__swblk_t', 'time_t', 'IPPORT_USERRESERVED', 'fd_set',
           '__ssize_t', 'fsid_t', 'TCP_TIME_WAIT', 'u_long',
           'IPPORT_EFSSERVER', 'IPPORT_WHOIS', 'SOCK_STREAM',
           'type_com_t', '__fd_mask', 'intmax_t', 'int16_t',
           'uintmax_t', 'clock_t', 'u_int32_t', 'MSG_NOSIGNAL',
           'TCP_FIN_WAIT2', 'IPPROTO_PUP', 'TCP_FIN_WAIT1',
           '__sigset_t', '__clockid_t', '__useconds_t',
           'uint_fast32_t', 'int_least8_t', 'ip6_mtuinfo',
           'SOCK_NONBLOCK', 'IPPROTO_RAW', 'IPPROTO_TP', 'socklen_t',
           'TCP', 'RTU', '__fsfilcnt64_t', 'IPPORT_SUPDUP',
           'timespec', 'off_t', 'IPPORT_DISCARD', '__off64_t',
           'MSG_TRYHARD', 'MSG_ERRQUEUE', 'uint_least8_t',
           'pthread_barrier_t', '__gid_t', 'ucred', 'IPPROTO_IGMP',
           'in_addr', 'pthread_mutexattr_t', 'SHUT_RDWR',
           'SOCK_CLOEXEC', '__uint32_t', 'SCM_CREDENTIALS',
           'IPPROTO_ENCAP', 'IPPROTO_ESP', 'IPPROTO_IPV6',
           '__blkcnt64_t', 'SHUT_RD', 'in6_addr', 'IPPORT_FINGER',
           'ip_mreq_source', '__uint64_t', 'MSG_WAITALL', 'linger',
           'SCM_RIGHTS', 'ushort', '__blkcnt_t', 'pthread_t',
           'clockid_t', 'IPPROTO_DSTOPTS', 'pthread_attr_t',
           'cmsghdr', 'IPPROTO_DCCP', 'msghdr', '__rlim64_t',
           'uint16_t', 'IPPROTO_GRE', 'uint_fast8_t', 'u_int8_t',
           'IPPROTO_TCP', 'SHUT_WR', 'group_filter', 'uint',
           'IPPROTO_ICMP', '__mode_t', 'uint_least64_t',
           'MSG_CONFIRM', 'IPPROTO_HOPOPTS', 'speed_t',
           'IPPORT_DAYTIME', '__blksize_t', 'SOCK_RAW',
           'pthread_spinlock_t', '__off_t', '__pthread_slist_t',
           'blkcnt_t', '__intptr_t', 'IPPROTO_IDP', 'IPPORT_BIFFUDP',
           'u_quad_t', 'group_source_req', 'SOCK_DGRAM', '__loff_t',
           '__u_long', 'modbus_param_t', 'fsfilcnt64_t',
           'TCP_CLOSING', 'tcp_md5sig', 'IPPROTO_EGP', '__daddr_t',
           '__timer_t', 'IPPORT_WHOSERVER', 'ip', '__sig_atomic_t',
           'ino64_t', 'TCP_LAST_ACK', 'int_least64_t',
           '__pthread_internal_slist', 'IPPORT_FTP', 'SOCK_PACKET',
           '__quad_t', 'uintptr_t', 'TCP_LISTEN', '__uint8_t',
           'sockaddr_storage', 'key_t', '__u_char', '__fsblkcnt64_t',
           'termios', '__caddr_t', 'MSG_EOR', 'int_fast8_t',
           '__dev_t', 'IPPORT_SYSTAT', 'ip_msfilter', 'IPPORT_TELNET',
           'IPPORT_TIMESERVER', 'MSG_SYN', '__suseconds_t', 'pid_t',
           'N15pthread_mutex_t17__pthread_mutex_s3DOT_5E', 'timer_t',
           'quad_t', 'MSG_PROXY', 'IPPORT_NAMESERVER', 'MSG_FIN',
           'pthread_once_t', 'useconds_t', '__socklen_t',
           'pthread_key_t', 'register_t', 'uint64_t', 'fd_mask',
           'blkcnt64_t', 'IPPORT_TFTP', 'sockaddr',
           'N14pthread_cond_t3DOT_8E', 'pthread_cond_t', 'group_req',
           'IPPORT_LOGINSERVER', 'tcflag_t', 'sockaddr_in', 'int64_t',
           'TCP_ESTABLISHED', 'IPPORT_NETSTAT', '__socket_type',
           'int_fast16_t', 'u_int', 'TCP_CA_Disorder', 'in6_pktinfo',
           'iovec', '__fsblkcnt_t', 'error_handling_t', '__rlim_t',
           'MSG_DONTWAIT', 'TCP_CA_Open', 'u_short', 'int_fast32_t',
           'nlink_t', 'tcp_ca_state', 'ssize_t', 'sa_family_t',
           'timeval', 'daddr_t', '__int64_t', '__u_quad_t',
           '__u_short', 'loff_t', 'int_fast64_t', 'IPPROTO_SCTP',
           '__int8_t', '__id_t', 'ip_opts', 'ipv6_mreq',
           'TCP_CLOSE_WAIT', '__pid_t', 'IPPROTO_MTP', 'ip_mreq',
           'ulong', 'IPPROTO_ROUTING', 'N16pthread_rwlock_t4DOT_11E',
           'fsblkcnt_t', 'TCP_SYN_RECV', 'caddr_t', '__ino_t',
           'N8in6_addr4DOT_20E', 'IPPORT_CMDSERVER', 'sockaddr_in6',
           'pthread_rwlockattr_t', 'TCP_CA_Recovery', 'NOP_ON_ERROR',
           'int8_t', 'IPPROTO_PIM', 'IPPROTO_NONE', 'in_addr_t',
           'osockaddr', 'IPPROTO_UDP', 'TCP_CLOSE', '__u_int',
           'suseconds_t', 'IPPORT_RJE', 'IPPORT_ECHO',
           'pthread_mutex_t', 'cc_t', '__key_t', 'uint32_t',
           '__clock_t', 'MSG_MORE', '__uid_t', 'uint8_t',
           '__fsfilcnt_t', 'MSG_CMSG_CLOEXEC']