stmhal/modnwcc3k.c - lite/micropython - Linaro Git Browser

 /*
  * This file is part of the Micro Python project, http://micropython.org/
  *
  * The MIT License (MIT)
  *
  * Copyright (c) 2014 Damien P. George
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */

 #include <string.h>
 #include <stdarg.h>
 #include <errno.h>

 // CC3000 defines its own ENOBUFS (different to standard one!)
 #undef ENOBUFS

 #include "py/nlr.h"
 #include "py/objtuple.h"
 #include "py/objlist.h"
 #include "py/stream.h"
 #include "py/runtime.h"
 #include "netutils.h"
 #include "modnetwork.h"
 #include "pin.h"
 #include "genhdr/pins.h"
 #include "spi.h"
 #include "pybioctl.h"

 #include "hci.h"
 #include "socket.h"
 #include "inet_ntop.h"
 #include "inet_pton.h"
 #include "ccspi.h"
 #include "wlan.h"
 #include "nvmem.h"
 #include "netapp.h"
 #include "patch_prog.h"

 #define MAX_ADDRSTRLEN      (128)
 #define MAX_RX_PACKET       (CC3000_RX_BUFFER_SIZE-CC3000_MINIMAL_RX_SIZE-1)
 #define MAX_TX_PACKET       (CC3000_TX_BUFFER_SIZE-CC3000_MINIMAL_TX_SIZE-1)

 #define MAKE_SOCKADDR(addr, ip, port) \
     sockaddr addr; \
     addr.sa_family = AF_INET; \
     addr.sa_data[0] = port >> 8; \
     addr.sa_data[1] = port; \
     addr.sa_data[2] = ip[0]; \
     addr.sa_data[3] = ip[1]; \
     addr.sa_data[4] = ip[2]; \
     addr.sa_data[5] = ip[3];

 #define UNPACK_SOCKADDR(addr, ip, port) \
     port = (addr.sa_data[0] << 8) | addr.sa_data[1]; \
     ip[0] = addr.sa_data[2]; \
     ip[1] = addr.sa_data[3]; \
     ip[2] = addr.sa_data[4]; \
     ip[3] = addr.sa_data[5];

 STATIC int cc3k_socket_ioctl(mod_network_socket_obj_t *socket, mp_uint_t request, mp_uint_t arg, int *_errno);

 int CC3000_EXPORT(errno); // for cc3000 driver

 STATIC volatile uint32_t fd_closed_state = 0;
 STATIC volatile bool wlan_connected = false;
 STATIC volatile bool ip_obtained = false;

 STATIC int cc3k_get_fd_closed_state(int fd) {
     return fd_closed_state & (1 << fd);
 }

 STATIC void cc3k_set_fd_closed_state(int fd) {
     fd_closed_state |= 1 << fd;
 }

 STATIC void cc3k_reset_fd_closed_state(int fd) {
     fd_closed_state &= ~(1 << fd);
 }

 STATIC void cc3k_callback(long event_type, char *data, unsigned char length) {
     switch (event_type) {
         case HCI_EVNT_WLAN_UNSOL_CONNECT:
             wlan_connected = true;
             break;
         case HCI_EVNT_WLAN_UNSOL_DISCONNECT:
             // link down
             wlan_connected = false;
             ip_obtained = false;
             break;
         case HCI_EVNT_WLAN_UNSOL_DHCP:
             ip_obtained = true;
             break;
         case HCI_EVNT_BSD_TCP_CLOSE_WAIT:
             // mark socket for closure
             cc3k_set_fd_closed_state(data[0]);
             break;
     }
 }

 STATIC int cc3k_gethostbyname(mp_obj_t nic, const char *name, mp_uint_t len, uint8_t *out_ip) {
     uint32_t ip;
     // CC3000 gethostbyname is unreliable and usually returns -95 on first call
     for (int retry = 5; CC3000_EXPORT(gethostbyname)((char*)name, len, &ip) < 0; retry--) {
         if (retry == 0 || CC3000_EXPORT(errno) != -95) {
             return CC3000_EXPORT(errno);
         }
         HAL_Delay(50);
     }

     if (ip == 0) {
         // unknown host
         return ENOENT;
     }

     out_ip[0] = ip >> 24;
     out_ip[1] = ip >> 16;
     out_ip[2] = ip >> 8;
     out_ip[3] = ip;

     return 0;
 }

 STATIC int cc3k_socket_socket(mod_network_socket_obj_t *socket, int *_errno) {
     if (socket->u_param.domain != MOD_NETWORK_AF_INET) {
         *_errno = EAFNOSUPPORT;
         return -1;
     }

     mp_uint_t type;
     switch (socket->u_param.type) {
         case MOD_NETWORK_SOCK_STREAM: type = SOCK_STREAM; break;
         case MOD_NETWORK_SOCK_DGRAM: type = SOCK_DGRAM; break;
         case MOD_NETWORK_SOCK_RAW: type = SOCK_RAW; break;
         default: *_errno = EINVAL; return -1;
     }

     // open socket
     int fd = CC3000_EXPORT(socket)(AF_INET, type, 0);
     if (fd < 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }

     // clear socket state
     cc3k_reset_fd_closed_state(fd);

     // store state of this socket
     socket->u_state = fd;

     // make accept blocking by default
     int optval = SOCK_OFF;
     socklen_t optlen = sizeof(optval);
     CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_ACCEPT_NONBLOCK, &optval, optlen);

     return 0;
 }

 STATIC void cc3k_socket_close(mod_network_socket_obj_t *socket) {
     CC3000_EXPORT(closesocket)(socket->u_state);
 }

 STATIC int cc3k_socket_bind(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
     MAKE_SOCKADDR(addr, ip, port)
     int ret = CC3000_EXPORT(bind)(socket->u_state, &addr, sizeof(addr));
     if (ret != 0) {
         *_errno = ret;
         return -1;
     }
     return 0;
 }

 STATIC int cc3k_socket_listen(mod_network_socket_obj_t *socket, mp_int_t backlog, int *_errno) {
     int ret = CC3000_EXPORT(listen)(socket->u_state, backlog);
     if (ret != 0) {
         *_errno = ret;
         return -1;
     }
     return 0;
 }

 STATIC int cc3k_socket_accept(mod_network_socket_obj_t *socket, mod_network_socket_obj_t *socket2, byte *ip, mp_uint_t *port, int *_errno) {
     // accept incoming connection
     int fd;
     sockaddr addr;
     socklen_t addr_len = sizeof(addr);
     if ((fd = CC3000_EXPORT(accept)(socket->u_state, &addr, &addr_len)) < 0) {
         if (fd == SOC_IN_PROGRESS) {
             *_errno = EAGAIN;
         } else {
             *_errno = -fd;
         }
         return -1;
     }

     // clear socket state
     cc3k_reset_fd_closed_state(fd);

     // store state in new socket object
     socket2->u_state = fd;

     // return ip and port
     // it seems CC3000 returns little endian for accept??
     //UNPACK_SOCKADDR(addr, ip, *port);
     *port = (addr.sa_data[1] << 8) | addr.sa_data[0];
     ip[3] = addr.sa_data[2];
     ip[2] = addr.sa_data[3];
     ip[1] = addr.sa_data[4];
     ip[0] = addr.sa_data[5];

     return 0;
 }

 STATIC int cc3k_socket_connect(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
     MAKE_SOCKADDR(addr, ip, port)
     int ret = CC3000_EXPORT(connect)(socket->u_state, &addr, sizeof(addr));
     if (ret != 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }
     return 0;
 }

 STATIC mp_uint_t cc3k_socket_send(mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, int *_errno) {
     if (cc3k_get_fd_closed_state(socket->u_state)) {
         CC3000_EXPORT(closesocket)(socket->u_state);
         *_errno = EPIPE;
         return -1;
     }

     // CC3K does not handle fragmentation, and will overflow,
     // split the packet into smaller ones and send them out.
     mp_int_t bytes = 0;
     while (bytes < len) {
         int n = MIN((len - bytes), MAX_TX_PACKET);
         n = CC3000_EXPORT(send)(socket->u_state, (uint8_t*)buf + bytes, n, 0);
         if (n <= 0) {
             *_errno = CC3000_EXPORT(errno);
             return -1;
         }
         bytes += n;
     }

     return bytes;
 }

 STATIC mp_uint_t cc3k_socket_recv(mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, int *_errno) {
     // check the socket is open
     if (cc3k_get_fd_closed_state(socket->u_state)) {
         // socket is closed, but CC3000 may have some data remaining in buffer, so check
         fd_set rfds;
         FD_ZERO(&rfds);
         FD_SET(socket->u_state, &rfds);
         timeval tv;
         tv.tv_sec = 0;
         tv.tv_usec = 1;
         int nfds = CC3000_EXPORT(select)(socket->u_state + 1, &rfds, NULL, NULL, &tv);
         if (nfds == -1 || !FD_ISSET(socket->u_state, &rfds)) {
             // no data waiting, so close socket and return 0 data
             CC3000_EXPORT(closesocket)(socket->u_state);
             return 0;
         }
     }

     // cap length at MAX_RX_PACKET
     len = MIN(len, MAX_RX_PACKET);

     // do the recv
     int ret = CC3000_EXPORT(recv)(socket->u_state, buf, len, 0);
     if (ret < 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }

     return ret;
 }

 STATIC mp_uint_t cc3k_socket_sendto(mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, byte *ip, mp_uint_t port, int *_errno) {
     MAKE_SOCKADDR(addr, ip, port)
     int ret = CC3000_EXPORT(sendto)(socket->u_state, (byte*)buf, len, 0, (sockaddr*)&addr, sizeof(addr));
     if (ret < 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }
     return ret;
 }

 STATIC mp_uint_t cc3k_socket_recvfrom(mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, byte *ip, mp_uint_t *port, int *_errno) {
     sockaddr addr;
     socklen_t addr_len = sizeof(addr);
     mp_int_t ret = CC3000_EXPORT(recvfrom)(socket->u_state, buf, len, 0, &addr, &addr_len);
     if (ret < 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }
     UNPACK_SOCKADDR(addr, ip, *port);
     return ret;
 }

 STATIC int cc3k_socket_setsockopt(mod_network_socket_obj_t *socket, mp_uint_t level, mp_uint_t opt, const void *optval, mp_uint_t optlen, int *_errno) {
     int ret = CC3000_EXPORT(setsockopt)(socket->u_state, level, opt, optval, optlen);
     if (ret < 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }
     return 0;
 }

 STATIC int cc3k_socket_settimeout(mod_network_socket_obj_t *socket, mp_uint_t timeout_ms, int *_errno) {
     int ret;
     if (timeout_ms == 0 || timeout_ms == -1) {
         int optval;
         socklen_t optlen = sizeof(optval);
         if (timeout_ms == 0) {
             // set non-blocking mode
             optval = SOCK_ON;
         } else {
             // set blocking mode
             optval = SOCK_OFF;
         }
         ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_RECV_NONBLOCK, &optval, optlen);
         if (ret == 0) {
             ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_ACCEPT_NONBLOCK, &optval, optlen);
         }
     } else {
         // set timeout
         socklen_t optlen = sizeof(timeout_ms);
         ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_RECV_TIMEOUT, &timeout_ms, optlen);
     }

     if (ret != 0) {
         *_errno = CC3000_EXPORT(errno);
         return -1;
     }

     return 0;
 }

 STATIC int cc3k_socket_ioctl(mod_network_socket_obj_t *socket, mp_uint_t request, mp_uint_t arg, int *_errno) {
     mp_uint_t ret;
     if (request == MP_IOCTL_POLL) {
         mp_uint_t flags = arg;
         ret = 0;
         int fd = socket->u_state;

         // init fds
         fd_set rfds, wfds, xfds;
         FD_ZERO(&rfds);
         FD_ZERO(&wfds);
         FD_ZERO(&xfds);

         // set fds if needed
         if (flags & MP_IOCTL_POLL_RD) {
             FD_SET(fd, &rfds);

             // A socked that just closed is available for reading.  A call to
             // recv() returns 0 which is consistent with BSD.
             if (cc3k_get_fd_closed_state(fd)) {
                 ret |= MP_IOCTL_POLL_RD;
             }
         }
         if (flags & MP_IOCTL_POLL_WR) {
             FD_SET(fd, &wfds);
         }
         if (flags & MP_IOCTL_POLL_HUP) {
             FD_SET(fd, &xfds);
         }

         // call cc3000 select with minimum timeout
         timeval tv;
         tv.tv_sec = 0;
         tv.tv_usec = 1;
         int nfds = CC3000_EXPORT(select)(fd + 1, &rfds, &wfds, &xfds, &tv);

         // check for error
         if (nfds == -1) {
             *_errno = CC3000_EXPORT(errno);
             return -1;
         }

         // check return of select
         if (FD_ISSET(fd, &rfds)) {
             ret |= MP_IOCTL_POLL_RD;
         }
         if (FD_ISSET(fd, &wfds)) {
             ret |= MP_IOCTL_POLL_WR;
         }
         if (FD_ISSET(fd, &xfds)) {
             ret |= MP_IOCTL_POLL_HUP;
         }
     } else {
         *_errno = EINVAL;
         ret = -1;
     }
     return ret;
 }

 /******************************************************************************/
 // Micro Python bindings; CC3K class

 typedef struct _cc3k_obj_t {
     mp_obj_base_t base;
 } cc3k_obj_t;

 STATIC const cc3k_obj_t cc3k_obj = {{(mp_obj_type_t*)&mod_network_nic_type_cc3k}};

 // \classmethod \constructor(spi, pin_cs, pin_en, pin_irq)
 // Initialise the CC3000 using the given SPI bus and pins and return a CC3K object.
 //
 // Note: pins were originally hard-coded to:
 //      PYBv1.0: init(pyb.SPI(2), pyb.Pin.board.Y5, pyb.Pin.board.Y4, pyb.Pin.board.Y3)
 //        [SPI on Y position; Y6=B13=SCK, Y7=B14=MISO, Y8=B15=MOSI]
 //
 //      STM32F4DISC: init(pyb.SPI(2), pyb.Pin.cpu.A15, pyb.Pin.cpu.B10, pyb.Pin.cpu.B11)
 STATIC mp_obj_t cc3k_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
     // check arguments
     mp_arg_check_num(n_args, n_kw, 4, 4, false);

     // set the pins to use
     SpiInit(
         spi_get_handle(args[0]),
         pin_find(args[1]),
         pin_find(args[2]),
         pin_find(args[3])
     );

     // initialize and start the module
     wlan_init(cc3k_callback, NULL, NULL, NULL,
             ReadWlanInterruptPin, SpiResumeSpi, SpiPauseSpi, WriteWlanPin);

     if (wlan_start(0) != 0) {
         nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "failed to init CC3000 module"));
     }

     // set connection policy. this should be called explicitly by the user
     // wlan_ioctl_set_connection_policy(0, 0, 0);

     // Mask out all non-required events from the CC3000
     wlan_set_event_mask(HCI_EVNT_WLAN_KEEPALIVE|
                         HCI_EVNT_WLAN_UNSOL_INIT|
                         HCI_EVNT_WLAN_ASYNC_PING_REPORT|
                         HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE);

     // register with network module
     mod_network_register_nic((mp_obj_t)&cc3k_obj);

     return (mp_obj_t)&cc3k_obj;
 }

 // method connect(ssid, key=None, *, security=WPA2, bssid=None)
 STATIC mp_obj_t cc3k_connect(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
     static const mp_arg_t allowed_args[] = {
         { MP_QSTR_ssid, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
         { MP_QSTR_key, MP_ARG_OBJ, {.u_obj = mp_const_none} },
         { MP_QSTR_security, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = WLAN_SEC_WPA2} },
         { MP_QSTR_bssid, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
     };

     // parse args
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);

     // get ssid
     mp_uint_t ssid_len;
     const char *ssid = mp_obj_str_get_data(args[0].u_obj, &ssid_len);

     // get key and sec
     mp_uint_t key_len = 0;
     const char *key = NULL;
     mp_uint_t sec = WLAN_SEC_UNSEC;
     if (args[1].u_obj != mp_const_none) {
         key = mp_obj_str_get_data(args[1].u_obj, &key_len);
         sec = args[2].u_int;
     }

     // get bssid
     const char *bssid = NULL;
     if (args[3].u_obj != mp_const_none) {
         bssid = mp_obj_str_get_str(args[3].u_obj);
     }

     // connect to AP
     if (wlan_connect(sec, (char*)ssid, ssid_len, (uint8_t*)bssid, (uint8_t*)key, key_len) != 0) {
         nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "could not connect to ssid=%s, sec=%d, key=%s\n", ssid, sec, key));
     }

     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_KW(cc3k_connect_obj, 1, cc3k_connect);

 STATIC mp_obj_t cc3k_disconnect(mp_obj_t self_in) {
     // should we check return value?
     wlan_disconnect();
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_disconnect_obj, cc3k_disconnect);

 STATIC mp_obj_t cc3k_isconnected(mp_obj_t self_in) {
     return MP_BOOL(wlan_connected && ip_obtained);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_isconnected_obj, cc3k_isconnected);

 STATIC mp_obj_t cc3k_ifconfig(mp_obj_t self_in) {
     tNetappIpconfigRetArgs ipconfig;
     netapp_ipconfig(&ipconfig);

     // render MAC address
     VSTR_FIXED(mac_vstr, 18);
     const uint8_t *mac = ipconfig.uaMacAddr;
     vstr_printf(&mac_vstr, "%02x:%02x:%02x:%02x:%02x:%02x", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);

     // create and return tuple with ifconfig info
     mp_obj_t tuple[7] = {
         netutils_format_ipv4_addr(ipconfig.aucIP, NETUTILS_LITTLE),
         netutils_format_ipv4_addr(ipconfig.aucSubnetMask, NETUTILS_LITTLE),
         netutils_format_ipv4_addr(ipconfig.aucDefaultGateway, NETUTILS_LITTLE),
         netutils_format_ipv4_addr(ipconfig.aucDNSServer, NETUTILS_LITTLE),
         netutils_format_ipv4_addr(ipconfig.aucDHCPServer, NETUTILS_LITTLE),
         mp_obj_new_str(mac_vstr.buf, mac_vstr.len, false),
         mp_obj_new_str((const char*)ipconfig.uaSSID, strlen((const char*)ipconfig.uaSSID), false),
     };
     return mp_obj_new_tuple(MP_ARRAY_SIZE(tuple), tuple);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_ifconfig_obj, cc3k_ifconfig);

 STATIC mp_obj_t cc3k_patch_version(mp_obj_t self_in) {
     uint8_t pver[2];
     mp_obj_tuple_t *t_pver;

     nvmem_read_sp_version(pver);
     t_pver = mp_obj_new_tuple(2, NULL);
     t_pver->items[0] = mp_obj_new_int(pver[0]);
     t_pver->items[1] = mp_obj_new_int(pver[1]);
     return t_pver;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_patch_version_obj, cc3k_patch_version);

 STATIC mp_obj_t cc3k_patch_program(mp_obj_t self_in, mp_obj_t key_in) {
     const char *key = mp_obj_str_get_str(key_in);
     if (key[0] == 'p' && key[1] == 'g' && key[2] == 'm' && key[3] == '\0') {
         patch_prog_start();
     } else {
         mp_print_str(&mp_plat_print, "pass 'pgm' as argument in order to program\n");
     }
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_2(cc3k_patch_program_obj, cc3k_patch_program);

 STATIC const mp_map_elem_t cc3k_locals_dict_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&cc3k_connect_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_disconnect), (mp_obj_t)&cc3k_disconnect_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_isconnected), (mp_obj_t)&cc3k_isconnected_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_ifconfig), (mp_obj_t)&cc3k_ifconfig_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_patch_version), (mp_obj_t)&cc3k_patch_version_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_patch_program), (mp_obj_t)&cc3k_patch_program_obj },

     // class constants
     { MP_OBJ_NEW_QSTR(MP_QSTR_WEP), MP_OBJ_NEW_SMALL_INT(WLAN_SEC_WEP) },
     { MP_OBJ_NEW_QSTR(MP_QSTR_WPA), MP_OBJ_NEW_SMALL_INT(WLAN_SEC_WPA) },
     { MP_OBJ_NEW_QSTR(MP_QSTR_WPA2), MP_OBJ_NEW_SMALL_INT(WLAN_SEC_WPA2) },
 };

 STATIC MP_DEFINE_CONST_DICT(cc3k_locals_dict, cc3k_locals_dict_table);

 const mod_network_nic_type_t mod_network_nic_type_cc3k = {
     .base = {
         { &mp_type_type },
         .name = MP_QSTR_CC3K,
         .make_new = cc3k_make_new,
         .locals_dict = (mp_obj_t)&cc3k_locals_dict,
     },
     .gethostbyname = cc3k_gethostbyname,
     .socket = cc3k_socket_socket,
     .close = cc3k_socket_close,
     .bind = cc3k_socket_bind,
     .listen = cc3k_socket_listen,
     .accept = cc3k_socket_accept,
     .connect = cc3k_socket_connect,
     .send = cc3k_socket_send,
     .recv = cc3k_socket_recv,
     .sendto = cc3k_socket_sendto,
     .recvfrom = cc3k_socket_recvfrom,
     .setsockopt = cc3k_socket_setsockopt,
     .settimeout = cc3k_socket_settimeout,
     .ioctl = cc3k_socket_ioctl,
 };
	/*
	* This file is part of the Micro Python project, http://micropython.org/
	*
	* The MIT License (MIT)
	*
	* Copyright (c) 2014 Damien P. George
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	* THE SOFTWARE.
	*/

	#include <string.h>
	#include <stdarg.h>
	#include <errno.h>

	// CC3000 defines its own ENOBUFS (different to standard one!)
	#undef ENOBUFS

	#include "py/nlr.h"
	#include "py/objtuple.h"
	#include "py/objlist.h"
	#include "py/stream.h"
	#include "py/runtime.h"
	#include "netutils.h"
	#include "modnetwork.h"
	#include "pin.h"
	#include "genhdr/pins.h"
	#include "spi.h"
	#include "pybioctl.h"

	#include "hci.h"
	#include "socket.h"
	#include "inet_ntop.h"
	#include "inet_pton.h"
	#include "ccspi.h"
	#include "wlan.h"
	#include "nvmem.h"
	#include "netapp.h"
	#include "patch_prog.h"

	#define MAX_ADDRSTRLEN (128)
	#define MAX_RX_PACKET (CC3000_RX_BUFFER_SIZE-CC3000_MINIMAL_RX_SIZE-1)
	#define MAX_TX_PACKET (CC3000_TX_BUFFER_SIZE-CC3000_MINIMAL_TX_SIZE-1)

	#define MAKE_SOCKADDR(addr, ip, port) \
	sockaddr addr; \
	addr.sa_family = AF_INET; \
	addr.sa_data[0] = port >> 8; \
	addr.sa_data[1] = port; \
	addr.sa_data[2] = ip[0]; \
	addr.sa_data[3] = ip[1]; \
	addr.sa_data[4] = ip[2]; \
	addr.sa_data[5] = ip[3];

	#define UNPACK_SOCKADDR(addr, ip, port) \
	port = (addr.sa_data[0] << 8) \| addr.sa_data[1]; \
	ip[0] = addr.sa_data[2]; \
	ip[1] = addr.sa_data[3]; \
	ip[2] = addr.sa_data[4]; \
	ip[3] = addr.sa_data[5];

	STATIC int cc3k_socket_ioctl(mod_network_socket_obj_t socket, mp_uint_t request, mp_uint_t arg, int _errno);

	int CC3000_EXPORT(errno); // for cc3000 driver

	STATIC volatile uint32_t fd_closed_state = 0;
	STATIC volatile bool wlan_connected = false;
	STATIC volatile bool ip_obtained = false;

	STATIC int cc3k_get_fd_closed_state(int fd) {
	return fd_closed_state & (1 << fd);
	}

	STATIC void cc3k_set_fd_closed_state(int fd) {
	fd_closed_state \|= 1 << fd;
	}

	STATIC void cc3k_reset_fd_closed_state(int fd) {
	fd_closed_state &= ~(1 << fd);
	}

	STATIC void cc3k_callback(long event_type, char *data, unsigned char length) {
	switch (event_type) {
	case HCI_EVNT_WLAN_UNSOL_CONNECT:
	wlan_connected = true;
	break;
	case HCI_EVNT_WLAN_UNSOL_DISCONNECT:
	// link down
	wlan_connected = false;
	ip_obtained = false;
	break;
	case HCI_EVNT_WLAN_UNSOL_DHCP:
	ip_obtained = true;
	break;
	case HCI_EVNT_BSD_TCP_CLOSE_WAIT:
	// mark socket for closure
	cc3k_set_fd_closed_state(data[0]);
	break;
	}
	}

	STATIC int cc3k_gethostbyname(mp_obj_t nic, const char name, mp_uint_t len, uint8_t out_ip) {
	uint32_t ip;
	// CC3000 gethostbyname is unreliable and usually returns -95 on first call
	for (int retry = 5; CC3000_EXPORT(gethostbyname)((char*)name, len, &ip) < 0; retry--) {
	if (retry == 0 \|\| CC3000_EXPORT(errno) != -95) {
	return CC3000_EXPORT(errno);
	}
	HAL_Delay(50);
	}

	if (ip == 0) {
	// unknown host
	return ENOENT;
	}

	out_ip[0] = ip >> 24;
	out_ip[1] = ip >> 16;
	out_ip[2] = ip >> 8;
	out_ip[3] = ip;

	return 0;
	}

	STATIC int cc3k_socket_socket(mod_network_socket_obj_t socket, int _errno) {
	if (socket->u_param.domain != MOD_NETWORK_AF_INET) {
	*_errno = EAFNOSUPPORT;
	return -1;
	}

	mp_uint_t type;
	switch (socket->u_param.type) {
	case MOD_NETWORK_SOCK_STREAM: type = SOCK_STREAM; break;
	case MOD_NETWORK_SOCK_DGRAM: type = SOCK_DGRAM; break;
	case MOD_NETWORK_SOCK_RAW: type = SOCK_RAW; break;
	default: *_errno = EINVAL; return -1;
	}

	// open socket
	int fd = CC3000_EXPORT(socket)(AF_INET, type, 0);
	if (fd < 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}

	// clear socket state
	cc3k_reset_fd_closed_state(fd);

	// store state of this socket
	socket->u_state = fd;

	// make accept blocking by default
	int optval = SOCK_OFF;
	socklen_t optlen = sizeof(optval);
	CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_ACCEPT_NONBLOCK, &optval, optlen);

	return 0;
	}

	STATIC void cc3k_socket_close(mod_network_socket_obj_t *socket) {
	CC3000_EXPORT(closesocket)(socket->u_state);
	}

	STATIC int cc3k_socket_bind(mod_network_socket_obj_t socket, byte ip, mp_uint_t port, int *_errno) {
	MAKE_SOCKADDR(addr, ip, port)
	int ret = CC3000_EXPORT(bind)(socket->u_state, &addr, sizeof(addr));
	if (ret != 0) {
	*_errno = ret;
	return -1;
	}
	return 0;
	}

	STATIC int cc3k_socket_listen(mod_network_socket_obj_t socket, mp_int_t backlog, int _errno) {
	int ret = CC3000_EXPORT(listen)(socket->u_state, backlog);
	if (ret != 0) {
	*_errno = ret;
	return -1;
	}
	return 0;
	}

	STATIC int cc3k_socket_accept(mod_network_socket_obj_t socket, mod_network_socket_obj_t socket2, byte ip, mp_uint_t port, int *_errno) {
	// accept incoming connection
	int fd;
	sockaddr addr;
	socklen_t addr_len = sizeof(addr);
	if ((fd = CC3000_EXPORT(accept)(socket->u_state, &addr, &addr_len)) < 0) {
	if (fd == SOC_IN_PROGRESS) {
	*_errno = EAGAIN;
	} else {
	*_errno = -fd;
	}
	return -1;
	}

	// clear socket state
	cc3k_reset_fd_closed_state(fd);

	// store state in new socket object
	socket2->u_state = fd;

	// return ip and port
	// it seems CC3000 returns little endian for accept??
	//UNPACK_SOCKADDR(addr, ip, *port);
	*port = (addr.sa_data[1] << 8) \| addr.sa_data[0];
	ip[3] = addr.sa_data[2];
	ip[2] = addr.sa_data[3];
	ip[1] = addr.sa_data[4];
	ip[0] = addr.sa_data[5];

	return 0;
	}

	STATIC int cc3k_socket_connect(mod_network_socket_obj_t socket, byte ip, mp_uint_t port, int *_errno) {
	MAKE_SOCKADDR(addr, ip, port)
	int ret = CC3000_EXPORT(connect)(socket->u_state, &addr, sizeof(addr));
	if (ret != 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}
	return 0;
	}

	STATIC mp_uint_t cc3k_socket_send(mod_network_socket_obj_t socket, const byte buf, mp_uint_t len, int *_errno) {
	if (cc3k_get_fd_closed_state(socket->u_state)) {
	CC3000_EXPORT(closesocket)(socket->u_state);
	*_errno = EPIPE;
	return -1;
	}

	// CC3K does not handle fragmentation, and will overflow,
	// split the packet into smaller ones and send them out.
	mp_int_t bytes = 0;
	while (bytes < len) {
	int n = MIN((len - bytes), MAX_TX_PACKET);
	n = CC3000_EXPORT(send)(socket->u_state, (uint8_t*)buf + bytes, n, 0);
	if (n <= 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}
	bytes += n;
	}

	return bytes;
	}

	STATIC mp_uint_t cc3k_socket_recv(mod_network_socket_obj_t socket, byte buf, mp_uint_t len, int *_errno) {
	// check the socket is open
	if (cc3k_get_fd_closed_state(socket->u_state)) {
	// socket is closed, but CC3000 may have some data remaining in buffer, so check
	fd_set rfds;
	FD_ZERO(&rfds);
	FD_SET(socket->u_state, &rfds);
	timeval tv;
	tv.tv_sec = 0;
	tv.tv_usec = 1;
	int nfds = CC3000_EXPORT(select)(socket->u_state + 1, &rfds, NULL, NULL, &tv);
	if (nfds == -1 \|\| !FD_ISSET(socket->u_state, &rfds)) {
	// no data waiting, so close socket and return 0 data
	CC3000_EXPORT(closesocket)(socket->u_state);
	return 0;
	}
	}

	// cap length at MAX_RX_PACKET
	len = MIN(len, MAX_RX_PACKET);

	// do the recv
	int ret = CC3000_EXPORT(recv)(socket->u_state, buf, len, 0);
	if (ret < 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}

	return ret;
	}

	STATIC mp_uint_t cc3k_socket_sendto(mod_network_socket_obj_t socket, const byte buf, mp_uint_t len, byte ip, mp_uint_t port, int _errno) {
	MAKE_SOCKADDR(addr, ip, port)
	int ret = CC3000_EXPORT(sendto)(socket->u_state, (byte)buf, len, 0, (sockaddr)&addr, sizeof(addr));
	if (ret < 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}
	return ret;
	}

	STATIC mp_uint_t cc3k_socket_recvfrom(mod_network_socket_obj_t socket, byte buf, mp_uint_t len, byte ip, mp_uint_t port, int *_errno) {
	sockaddr addr;
	socklen_t addr_len = sizeof(addr);
	mp_int_t ret = CC3000_EXPORT(recvfrom)(socket->u_state, buf, len, 0, &addr, &addr_len);
	if (ret < 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}
	UNPACK_SOCKADDR(addr, ip, *port);
	return ret;
	}

	STATIC int cc3k_socket_setsockopt(mod_network_socket_obj_t socket, mp_uint_t level, mp_uint_t opt, const void optval, mp_uint_t optlen, int *_errno) {
	int ret = CC3000_EXPORT(setsockopt)(socket->u_state, level, opt, optval, optlen);
	if (ret < 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}
	return 0;
	}

	STATIC int cc3k_socket_settimeout(mod_network_socket_obj_t socket, mp_uint_t timeout_ms, int _errno) {
	int ret;
	if (timeout_ms == 0 \|\| timeout_ms == -1) {
	int optval;
	socklen_t optlen = sizeof(optval);
	if (timeout_ms == 0) {
	// set non-blocking mode
	optval = SOCK_ON;
	} else {
	// set blocking mode
	optval = SOCK_OFF;
	}
	ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_RECV_NONBLOCK, &optval, optlen);
	if (ret == 0) {
	ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_ACCEPT_NONBLOCK, &optval, optlen);
	}
	} else {
	// set timeout
	socklen_t optlen = sizeof(timeout_ms);
	ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_RECV_TIMEOUT, &timeout_ms, optlen);
	}

	if (ret != 0) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}

	return 0;
	}

	STATIC int cc3k_socket_ioctl(mod_network_socket_obj_t socket, mp_uint_t request, mp_uint_t arg, int _errno) {
	mp_uint_t ret;
	if (request == MP_IOCTL_POLL) {
	mp_uint_t flags = arg;
	ret = 0;
	int fd = socket->u_state;

	// init fds
	fd_set rfds, wfds, xfds;
	FD_ZERO(&rfds);
	FD_ZERO(&wfds);
	FD_ZERO(&xfds);

	// set fds if needed
	if (flags & MP_IOCTL_POLL_RD) {
	FD_SET(fd, &rfds);

	// A socked that just closed is available for reading. A call to
	// recv() returns 0 which is consistent with BSD.
	if (cc3k_get_fd_closed_state(fd)) {
	ret \|= MP_IOCTL_POLL_RD;
	}
	}
	if (flags & MP_IOCTL_POLL_WR) {
	FD_SET(fd, &wfds);
	}
	if (flags & MP_IOCTL_POLL_HUP) {
	FD_SET(fd, &xfds);
	}

	// call cc3000 select with minimum timeout
	timeval tv;
	tv.tv_sec = 0;
	tv.tv_usec = 1;
	int nfds = CC3000_EXPORT(select)(fd + 1, &rfds, &wfds, &xfds, &tv);

	// check for error
	if (nfds == -1) {
	*_errno = CC3000_EXPORT(errno);
	return -1;
	}

	// check return of select
	if (FD_ISSET(fd, &rfds)) {
	ret \|= MP_IOCTL_POLL_RD;
	}
	if (FD_ISSET(fd, &wfds)) {
	ret \|= MP_IOCTL_POLL_WR;
	}
	if (FD_ISSET(fd, &xfds)) {
	ret \|= MP_IOCTL_POLL_HUP;
	}
	} else {
	*_errno = EINVAL;
	ret = -1;
	}
	return ret;
	}

	/******************************************************************************/
	// Micro Python bindings; CC3K class

	typedef struct _cc3k_obj_t {
	mp_obj_base_t base;
	} cc3k_obj_t;

	STATIC const cc3k_obj_t cc3k_obj = {{(mp_obj_type_t*)&mod_network_nic_type_cc3k}};

	// \classmethod \constructor(spi, pin_cs, pin_en, pin_irq)
	// Initialise the CC3000 using the given SPI bus and pins and return a CC3K object.
	//
	// Note: pins were originally hard-coded to:
	// PYBv1.0: init(pyb.SPI(2), pyb.Pin.board.Y5, pyb.Pin.board.Y4, pyb.Pin.board.Y3)
	// [SPI on Y position; Y6=B13=SCK, Y7=B14=MISO, Y8=B15=MOSI]
	//
	// STM32F4DISC: init(pyb.SPI(2), pyb.Pin.cpu.A15, pyb.Pin.cpu.B10, pyb.Pin.cpu.B11)
	STATIC mp_obj_t cc3k_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
	// check arguments
	mp_arg_check_num(n_args, n_kw, 4, 4, false);

	// set the pins to use
	SpiInit(
	spi_get_handle(args[0]),
	pin_find(args[1]),
	pin_find(args[2]),
	pin_find(args[3])
	);

	// initialize and start the module
	wlan_init(cc3k_callback, NULL, NULL, NULL,
	ReadWlanInterruptPin, SpiResumeSpi, SpiPauseSpi, WriteWlanPin);

	if (wlan_start(0) != 0) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "failed to init CC3000 module"));
	}

	// set connection policy. this should be called explicitly by the user
	// wlan_ioctl_set_connection_policy(0, 0, 0);

	// Mask out all non-required events from the CC3000
	wlan_set_event_mask(HCI_EVNT_WLAN_KEEPALIVE\|
	HCI_EVNT_WLAN_UNSOL_INIT\|
	HCI_EVNT_WLAN_ASYNC_PING_REPORT\|
	HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE);

	// register with network module
	mod_network_register_nic((mp_obj_t)&cc3k_obj);

	return (mp_obj_t)&cc3k_obj;
	}

	// method connect(ssid, key=None, *, security=WPA2, bssid=None)
	STATIC mp_obj_t cc3k_connect(mp_uint_t n_args, const mp_obj_t pos_args, mp_map_t kw_args) {
	static const mp_arg_t allowed_args[] = {
	{ MP_QSTR_ssid, MP_ARG_REQUIRED \| MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
	{ MP_QSTR_key, MP_ARG_OBJ, {.u_obj = mp_const_none} },
	{ MP_QSTR_security, MP_ARG_KW_ONLY \| MP_ARG_INT, {.u_int = WLAN_SEC_WPA2} },
	{ MP_QSTR_bssid, MP_ARG_KW_ONLY \| MP_ARG_OBJ, {.u_obj = mp_const_none} },
	};

	// parse args
	mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
	mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);

	// get ssid
	mp_uint_t ssid_len;
	const char *ssid = mp_obj_str_get_data(args[0].u_obj, &ssid_len);

	// get key and sec
	mp_uint_t key_len = 0;
	const char *key = NULL;
	mp_uint_t sec = WLAN_SEC_UNSEC;
	if (args[1].u_obj != mp_const_none) {
	key = mp_obj_str_get_data(args[1].u_obj, &key_len);
	sec = args[2].u_int;
	}

	// get bssid
	const char *bssid = NULL;
	if (args[3].u_obj != mp_const_none) {
	bssid = mp_obj_str_get_str(args[3].u_obj);
	}

	// connect to AP
	if (wlan_connect(sec, (char)ssid, ssid_len, (uint8_t)bssid, (uint8_t*)key, key_len) != 0) {
	nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "could not connect to ssid=%s, sec=%d, key=%s\n", ssid, sec, key));
	}

	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_KW(cc3k_connect_obj, 1, cc3k_connect);

	STATIC mp_obj_t cc3k_disconnect(mp_obj_t self_in) {
	// should we check return value?
	wlan_disconnect();
	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_disconnect_obj, cc3k_disconnect);

	STATIC mp_obj_t cc3k_isconnected(mp_obj_t self_in) {
	return MP_BOOL(wlan_connected && ip_obtained);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_isconnected_obj, cc3k_isconnected);

	STATIC mp_obj_t cc3k_ifconfig(mp_obj_t self_in) {
	tNetappIpconfigRetArgs ipconfig;
	netapp_ipconfig(&ipconfig);

	// render MAC address
	VSTR_FIXED(mac_vstr, 18);
	const uint8_t *mac = ipconfig.uaMacAddr;
	vstr_printf(&mac_vstr, "%02x:%02x:%02x:%02x:%02x:%02x", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);

	// create and return tuple with ifconfig info
	mp_obj_t tuple[7] = {
	netutils_format_ipv4_addr(ipconfig.aucIP, NETUTILS_LITTLE),
	netutils_format_ipv4_addr(ipconfig.aucSubnetMask, NETUTILS_LITTLE),
	netutils_format_ipv4_addr(ipconfig.aucDefaultGateway, NETUTILS_LITTLE),
	netutils_format_ipv4_addr(ipconfig.aucDNSServer, NETUTILS_LITTLE),
	netutils_format_ipv4_addr(ipconfig.aucDHCPServer, NETUTILS_LITTLE),
	mp_obj_new_str(mac_vstr.buf, mac_vstr.len, false),
	mp_obj_new_str((const char)ipconfig.uaSSID, strlen((const char)ipconfig.uaSSID), false),
	};
	return mp_obj_new_tuple(MP_ARRAY_SIZE(tuple), tuple);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_ifconfig_obj, cc3k_ifconfig);

	STATIC mp_obj_t cc3k_patch_version(mp_obj_t self_in) {
	uint8_t pver[2];
	mp_obj_tuple_t *t_pver;

	nvmem_read_sp_version(pver);
	t_pver = mp_obj_new_tuple(2, NULL);
	t_pver->items[0] = mp_obj_new_int(pver[0]);
	t_pver->items[1] = mp_obj_new_int(pver[1]);
	return t_pver;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_patch_version_obj, cc3k_patch_version);

	STATIC mp_obj_t cc3k_patch_program(mp_obj_t self_in, mp_obj_t key_in) {
	const char *key = mp_obj_str_get_str(key_in);
	if (key[0] == 'p' && key[1] == 'g' && key[2] == 'm' && key[3] == '\0') {
	patch_prog_start();
	} else {
	mp_print_str(&mp_plat_print, "pass 'pgm' as argument in order to program\n");
	}
	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_2(cc3k_patch_program_obj, cc3k_patch_program);

	STATIC const mp_map_elem_t cc3k_locals_dict_table[] = {
	{ MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&cc3k_connect_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_disconnect), (mp_obj_t)&cc3k_disconnect_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_isconnected), (mp_obj_t)&cc3k_isconnected_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_ifconfig), (mp_obj_t)&cc3k_ifconfig_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_patch_version), (mp_obj_t)&cc3k_patch_version_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_patch_program), (mp_obj_t)&cc3k_patch_program_obj },

	// class constants
	{ MP_OBJ_NEW_QSTR(MP_QSTR_WEP), MP_OBJ_NEW_SMALL_INT(WLAN_SEC_WEP) },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_WPA), MP_OBJ_NEW_SMALL_INT(WLAN_SEC_WPA) },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_WPA2), MP_OBJ_NEW_SMALL_INT(WLAN_SEC_WPA2) },
	};

	STATIC MP_DEFINE_CONST_DICT(cc3k_locals_dict, cc3k_locals_dict_table);

	const mod_network_nic_type_t mod_network_nic_type_cc3k = {
	.base = {
	{ &mp_type_type },
	.name = MP_QSTR_CC3K,
	.make_new = cc3k_make_new,
	.locals_dict = (mp_obj_t)&cc3k_locals_dict,
	},
	.gethostbyname = cc3k_gethostbyname,
	.socket = cc3k_socket_socket,
	.close = cc3k_socket_close,
	.bind = cc3k_socket_bind,
	.listen = cc3k_socket_listen,
	.accept = cc3k_socket_accept,
	.connect = cc3k_socket_connect,
	.send = cc3k_socket_send,
	.recv = cc3k_socket_recv,
	.sendto = cc3k_socket_sendto,
	.recvfrom = cc3k_socket_recvfrom,
	.setsockopt = cc3k_socket_setsockopt,
	.settimeout = cc3k_socket_settimeout,
	.ioctl = cc3k_socket_ioctl,
	};