esp8266/modnetwork.c - lite/micropython - Linaro Git Browser

 /*
  * This file is part of the Micro Python project, http://micropython.org/
  *
  * The MIT License (MIT)
  *
  * Copyright (c) 2015 Paul Sokolovsky
  *
  * 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 <stdio.h>
 #include <stdint.h>
 #include <string.h>
 #include <errno.h>

 #include "py/nlr.h"
 #include "py/objlist.h"
 #include "py/runtime.h"
 #include "py/mphal.h"
 #include "netutils.h"
 #include "queue.h"
 #include "user_interface.h"
 #include "espconn.h"
 #include "spi_flash.h"
 #include "ets_alt_task.h"

 #define MODNETWORK_INCLUDE_CONSTANTS (1)

 typedef struct _wlan_if_obj_t {
     mp_obj_base_t base;
     int if_id;
 } wlan_if_obj_t;

 void error_check(bool status, const char *msg);
 const mp_obj_type_t wlan_if_type;

 STATIC const wlan_if_obj_t wlan_objs[] = {
     {{&wlan_if_type}, STATION_IF},
     {{&wlan_if_type}, SOFTAP_IF},
 };

 STATIC void require_if(mp_obj_t wlan_if, int if_no) {
     wlan_if_obj_t *self = MP_OBJ_TO_PTR(wlan_if);
     if (self->if_id != if_no) {
         error_check(false, if_no == STATION_IF ? "STA required" : "AP required");
     }
 }

 STATIC mp_obj_t get_wlan(mp_uint_t n_args, const mp_obj_t *args) {
     int idx = 0;
     if (n_args > 0) {
         idx = mp_obj_get_int(args[0]);
     }
     return MP_OBJ_FROM_PTR(&wlan_objs[idx]);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(get_wlan_obj, 0, 1, get_wlan);

 STATIC mp_obj_t esp_active(mp_uint_t n_args, const mp_obj_t *args) {
     wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
     uint32_t mode = wifi_get_opmode();
     if (n_args > 1) {
         int mask = self->if_id == STATION_IF ? STATION_MODE : SOFTAP_MODE;
         if (mp_obj_get_int(args[1]) != 0) {
             mode |= mask;
         } else {
             mode &= ~mask;
         }
         error_check(wifi_set_opmode(mode), "Cannot update i/f status");
         return mp_const_none;
     }

     // Get active status
     if (self->if_id == STATION_IF) {
         return mp_obj_new_bool(mode & STATION_MODE);
     } else {
         return mp_obj_new_bool(mode & SOFTAP_MODE);
     }
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_active_obj, 1, 2, esp_active);

 STATIC mp_obj_t esp_connect(mp_uint_t n_args, const mp_obj_t *args) {
     require_if(args[0], STATION_IF);
     struct station_config config = {{0}};
     mp_uint_t len;
     const char *p;

     p = mp_obj_str_get_data(args[1], &len);
     memcpy(config.ssid, p, len);
     p = mp_obj_str_get_data(args[2], &len);
     memcpy(config.password, p, len);

     error_check(wifi_station_set_config(&config), "Cannot set STA config");
     error_check(wifi_station_connect(), "Cannot connect to AP");

     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_connect_obj, 3, 7, esp_connect);

 STATIC mp_obj_t esp_disconnect(mp_obj_t self_in) {
     require_if(self_in, STATION_IF);
     error_check(wifi_station_disconnect(), "Cannot disconnect from AP");
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_disconnect_obj, esp_disconnect);

 STATIC mp_obj_t esp_status(mp_obj_t self_in) {
     wlan_if_obj_t *self = MP_OBJ_TO_PTR(self_in);
     if (self->if_id == STATION_IF) {
         return MP_OBJ_NEW_SMALL_INT(wifi_station_get_connect_status());
     }
     return MP_OBJ_NEW_SMALL_INT(-1);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_status_obj, esp_status);

 STATIC mp_obj_t *esp_scan_list = NULL;

 STATIC void esp_scan_cb(scaninfo *si, STATUS status) {
     if (esp_scan_list == NULL) {
         // called unexpectedly
         return;
     }
     if (si->pbss && status == 0) {
         struct bss_info *bs;
         STAILQ_FOREACH(bs, si->pbss, next) {
             mp_obj_tuple_t *t = mp_obj_new_tuple(6, NULL);
             t->items[0] = mp_obj_new_bytes(bs->ssid, strlen((char*)bs->ssid));
             t->items[1] = mp_obj_new_bytes(bs->bssid, sizeof(bs->bssid));
             t->items[2] = MP_OBJ_NEW_SMALL_INT(bs->channel);
             t->items[3] = MP_OBJ_NEW_SMALL_INT(bs->rssi);
             t->items[4] = MP_OBJ_NEW_SMALL_INT(bs->authmode);
             t->items[5] = MP_OBJ_NEW_SMALL_INT(bs->is_hidden);
             mp_obj_list_append(*esp_scan_list, MP_OBJ_FROM_PTR(t));
         }
     } else {
         // indicate error
         *esp_scan_list = MP_OBJ_NULL;
     }
     esp_scan_list = NULL;
 }

 STATIC mp_obj_t esp_scan(mp_obj_t self_in) {
     if (wifi_get_opmode() == SOFTAP_MODE) {
         nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
             "scan unsupported in AP mode"));
     }
     mp_obj_t list = mp_obj_new_list(0, NULL);
     esp_scan_list = &list;
     wifi_station_scan(NULL, (scan_done_cb_t)esp_scan_cb);
     ETS_POLL_WHILE(esp_scan_list != NULL);
     if (list == MP_OBJ_NULL) {
         nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "scan failed"));
     }
     return list;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_scan_obj, esp_scan);

 /// \method isconnected()
 /// Return True if connected to an AP and an IP address has been assigned,
 ///     false otherwise.
 STATIC mp_obj_t esp_isconnected(mp_obj_t self_in) {
     wlan_if_obj_t *self = MP_OBJ_TO_PTR(self_in);
     if (self->if_id == STATION_IF) {
         if (wifi_station_get_connect_status() == STATION_GOT_IP) {
             return mp_const_true;
         }
     } else {
         if (wifi_softap_get_station_num() > 0) {
             return mp_const_true;
         }
     }
     return mp_const_false;
 }

 STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_isconnected_obj, esp_isconnected);

 STATIC mp_obj_t esp_mac(mp_uint_t n_args, const mp_obj_t *args) {
     wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
     uint8_t mac[6];
     if (n_args == 1) {
         wifi_get_macaddr(self->if_id, mac);
         return mp_obj_new_bytes(mac, sizeof(mac));
     } else {
         mp_buffer_info_t bufinfo;
         mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_READ);

         if (bufinfo.len != 6) {
             nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
                 "invalid buffer length"));
         }

         wifi_set_macaddr(self->if_id, bufinfo.buf);
         return mp_const_none;
     }
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_mac_obj, 1, 2, esp_mac);

 STATIC mp_obj_t esp_ifconfig(mp_obj_t self_in) {
     wlan_if_obj_t *self = MP_OBJ_TO_PTR(self_in);
     struct ip_info info;
     wifi_get_ip_info(self->if_id, &info);
     mp_obj_t ifconfig[4] = {
             netutils_format_ipv4_addr((uint8_t*)&info.ip, NETUTILS_BIG),
             netutils_format_ipv4_addr((uint8_t*)&info.netmask, NETUTILS_BIG),
             netutils_format_ipv4_addr((uint8_t*)&info.gw, NETUTILS_BIG),
             MP_OBJ_NEW_QSTR(MP_QSTR_), // no DNS server
     };
     return mp_obj_new_tuple(4, ifconfig);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_ifconfig_obj, esp_ifconfig);

 STATIC mp_obj_t esp_config(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
     if (n_args != 1 && kwargs->used != 0) {
         nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
             "either pos or kw args are allowed"));
     }

     wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
     union {
         struct station_config sta;
         struct softap_config ap;
     } cfg;

     if (self->if_id == STATION_IF) {
         error_check(wifi_station_get_config(&cfg.sta), "can't get STA config");
     } else {
         error_check(wifi_softap_get_config(&cfg.ap), "can't get AP config");
     }

     if (kwargs->used != 0) {

         for (mp_uint_t i = 0; i < kwargs->alloc; i++) {
             if (MP_MAP_SLOT_IS_FILLED(kwargs, i)) {
                 #define QS(x) (uintptr_t)MP_OBJ_NEW_QSTR(x)
                 switch ((uintptr_t)kwargs->table[i].key) {
                     case QS(MP_QSTR_essid): {
                         mp_uint_t len;
                         const char *s = mp_obj_str_get_data(kwargs->table[i].value, &len);
                         len = MIN(len, sizeof(cfg.ap.ssid));
                         memcpy(cfg.ap.ssid, s, len);
                         cfg.ap.ssid_len = len;
                         break;
                     }
                     default:
                         goto unknown;
                 }
                 #undef QS
             }
         }

         if (self->if_id == STATION_IF) {
             error_check(wifi_station_set_config(&cfg.sta), "can't set STA config");
         } else {
             error_check(wifi_softap_set_config(&cfg.ap), "can't set AP config");
         }

         return mp_const_none;
     }

     // Get config

     if (n_args != 2) {
         nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
             "can query only one param"));
     }

     #define QS(x) (uintptr_t)MP_OBJ_NEW_QSTR(x)
     switch ((uintptr_t)args[1]) {
         case QS(MP_QSTR_essid):
             return mp_obj_new_str((char*)cfg.ap.ssid, cfg.ap.ssid_len, false);
     }
     #undef QS

 unknown:
     nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
         "unknown config param"));
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_config_obj, 1, esp_config);

 STATIC const mp_map_elem_t wlan_if_locals_dict_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_active), (mp_obj_t)&esp_active_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&esp_connect_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_disconnect), (mp_obj_t)&esp_disconnect_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_status), (mp_obj_t)&esp_status_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&esp_scan_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_isconnected), (mp_obj_t)&esp_isconnected_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_mac), (mp_obj_t)&esp_mac_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_config), (mp_obj_t)&esp_config_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_ifconfig), (mp_obj_t)&esp_ifconfig_obj },
 };

 STATIC MP_DEFINE_CONST_DICT(wlan_if_locals_dict, wlan_if_locals_dict_table);

 const mp_obj_type_t wlan_if_type = {
     { &mp_type_type },
     .name = MP_QSTR_WLAN,
     .locals_dict = (mp_obj_t)&wlan_if_locals_dict,
 };

 STATIC mp_obj_t esp_wifi_mode(mp_uint_t n_args, const mp_obj_t *args) {
     if (n_args == 0) {
         return mp_obj_new_int(wifi_get_opmode());
     } else {
         wifi_set_opmode(mp_obj_get_int(args[0]));
         return mp_const_none;
     }
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_wifi_mode_obj, 0, 1, esp_wifi_mode);

 STATIC mp_obj_t esp_phy_mode(mp_uint_t n_args, const mp_obj_t *args) {
     if (n_args == 0) {
         return mp_obj_new_int(wifi_get_phy_mode());
     } else {
         wifi_set_phy_mode(mp_obj_get_int(args[0]));
         return mp_const_none;
     }
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_phy_mode_obj, 0, 1, esp_phy_mode);

 STATIC const mp_map_elem_t mp_module_network_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_network) },
     { MP_OBJ_NEW_QSTR(MP_QSTR_WLAN), (mp_obj_t)&get_wlan_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_wifi_mode), (mp_obj_t)&esp_wifi_mode_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_phy_mode), (mp_obj_t)&esp_phy_mode_obj },

 #if MODNETWORK_INCLUDE_CONSTANTS
     { MP_OBJ_NEW_QSTR(MP_QSTR_STA_IF),
         MP_OBJ_NEW_SMALL_INT(STATION_IF)},
     { MP_OBJ_NEW_QSTR(MP_QSTR_AP_IF),
         MP_OBJ_NEW_SMALL_INT(SOFTAP_IF)},

     { MP_OBJ_NEW_QSTR(MP_QSTR_STAT_IDLE),
         MP_OBJ_NEW_SMALL_INT(STATION_IDLE)},
     { MP_OBJ_NEW_QSTR(MP_QSTR_STAT_CONNECTING),
         MP_OBJ_NEW_SMALL_INT(STATION_CONNECTING)},
     { MP_OBJ_NEW_QSTR(MP_QSTR_STAT_WRONG_PASSWORD),
         MP_OBJ_NEW_SMALL_INT(STATION_WRONG_PASSWORD)},
     { MP_OBJ_NEW_QSTR(MP_QSTR_STAT_NO_AP_FOUND),
         MP_OBJ_NEW_SMALL_INT(STATION_NO_AP_FOUND)},
     { MP_OBJ_NEW_QSTR(MP_QSTR_STAT_CONNECT_FAIL),
         MP_OBJ_NEW_SMALL_INT(STATION_CONNECT_FAIL)},
     { MP_OBJ_NEW_QSTR(MP_QSTR_STAT_GOT_IP),
         MP_OBJ_NEW_SMALL_INT(STATION_GOT_IP)},

     { MP_OBJ_NEW_QSTR(MP_QSTR_MODE_11B),
         MP_OBJ_NEW_SMALL_INT(PHY_MODE_11B) },
     { MP_OBJ_NEW_QSTR(MP_QSTR_MODE_11G),
         MP_OBJ_NEW_SMALL_INT(PHY_MODE_11G) },
     { MP_OBJ_NEW_QSTR(MP_QSTR_MODE_11N),
         MP_OBJ_NEW_SMALL_INT(PHY_MODE_11N) },
 #endif
 };

 STATIC MP_DEFINE_CONST_DICT(mp_module_network_globals, mp_module_network_globals_table);

 const mp_obj_module_t network_module = {
     .base = { &mp_type_module },
     .name = MP_QSTR_network,
     .globals = (mp_obj_dict_t*)&mp_module_network_globals,
 };
	/*
	* This file is part of the Micro Python project, http://micropython.org/
	*
	* The MIT License (MIT)
	*
	* Copyright (c) 2015 Paul Sokolovsky
	*
	* 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 <stdio.h>
	#include <stdint.h>
	#include <string.h>
	#include <errno.h>

	#include "py/nlr.h"
	#include "py/objlist.h"
	#include "py/runtime.h"
	#include "py/mphal.h"
	#include "netutils.h"
	#include "queue.h"
	#include "user_interface.h"
	#include "espconn.h"
	#include "spi_flash.h"
	#include "ets_alt_task.h"

	#define MODNETWORK_INCLUDE_CONSTANTS (1)

	typedef struct _wlan_if_obj_t {
	mp_obj_base_t base;
	int if_id;
	} wlan_if_obj_t;

	void error_check(bool status, const char *msg);
	const mp_obj_type_t wlan_if_type;

	STATIC const wlan_if_obj_t wlan_objs[] = {
	{{&wlan_if_type}, STATION_IF},
	{{&wlan_if_type}, SOFTAP_IF},
	};

	STATIC void require_if(mp_obj_t wlan_if, int if_no) {
	wlan_if_obj_t *self = MP_OBJ_TO_PTR(wlan_if);
	if (self->if_id != if_no) {
	error_check(false, if_no == STATION_IF ? "STA required" : "AP required");
	}
	}

	STATIC mp_obj_t get_wlan(mp_uint_t n_args, const mp_obj_t *args) {
	int idx = 0;
	if (n_args > 0) {
	idx = mp_obj_get_int(args[0]);
	}
	return MP_OBJ_FROM_PTR(&wlan_objs[idx]);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(get_wlan_obj, 0, 1, get_wlan);

	STATIC mp_obj_t esp_active(mp_uint_t n_args, const mp_obj_t *args) {
	wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
	uint32_t mode = wifi_get_opmode();
	if (n_args > 1) {
	int mask = self->if_id == STATION_IF ? STATION_MODE : SOFTAP_MODE;
	if (mp_obj_get_int(args[1]) != 0) {
	mode \|= mask;
	} else {
	mode &= ~mask;
	}
	error_check(wifi_set_opmode(mode), "Cannot update i/f status");
	return mp_const_none;
	}

	// Get active status
	if (self->if_id == STATION_IF) {
	return mp_obj_new_bool(mode & STATION_MODE);
	} else {
	return mp_obj_new_bool(mode & SOFTAP_MODE);
	}
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_active_obj, 1, 2, esp_active);

	STATIC mp_obj_t esp_connect(mp_uint_t n_args, const mp_obj_t *args) {
	require_if(args[0], STATION_IF);
	struct station_config config = {{0}};
	mp_uint_t len;
	const char *p;

	p = mp_obj_str_get_data(args[1], &len);
	memcpy(config.ssid, p, len);
	p = mp_obj_str_get_data(args[2], &len);
	memcpy(config.password, p, len);

	error_check(wifi_station_set_config(&config), "Cannot set STA config");
	error_check(wifi_station_connect(), "Cannot connect to AP");

	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_connect_obj, 3, 7, esp_connect);

	STATIC mp_obj_t esp_disconnect(mp_obj_t self_in) {
	require_if(self_in, STATION_IF);
	error_check(wifi_station_disconnect(), "Cannot disconnect from AP");
	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_disconnect_obj, esp_disconnect);

	STATIC mp_obj_t esp_status(mp_obj_t self_in) {
	wlan_if_obj_t *self = MP_OBJ_TO_PTR(self_in);
	if (self->if_id == STATION_IF) {
	return MP_OBJ_NEW_SMALL_INT(wifi_station_get_connect_status());
	}
	return MP_OBJ_NEW_SMALL_INT(-1);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_status_obj, esp_status);

	STATIC mp_obj_t *esp_scan_list = NULL;

	STATIC void esp_scan_cb(scaninfo *si, STATUS status) {
	if (esp_scan_list == NULL) {
	// called unexpectedly
	return;
	}
	if (si->pbss && status == 0) {
	struct bss_info *bs;
	STAILQ_FOREACH(bs, si->pbss, next) {
	mp_obj_tuple_t *t = mp_obj_new_tuple(6, NULL);
	t->items[0] = mp_obj_new_bytes(bs->ssid, strlen((char*)bs->ssid));
	t->items[1] = mp_obj_new_bytes(bs->bssid, sizeof(bs->bssid));
	t->items[2] = MP_OBJ_NEW_SMALL_INT(bs->channel);
	t->items[3] = MP_OBJ_NEW_SMALL_INT(bs->rssi);
	t->items[4] = MP_OBJ_NEW_SMALL_INT(bs->authmode);
	t->items[5] = MP_OBJ_NEW_SMALL_INT(bs->is_hidden);
	mp_obj_list_append(*esp_scan_list, MP_OBJ_FROM_PTR(t));
	}
	} else {
	// indicate error
	*esp_scan_list = MP_OBJ_NULL;
	}
	esp_scan_list = NULL;
	}

	STATIC mp_obj_t esp_scan(mp_obj_t self_in) {
	if (wifi_get_opmode() == SOFTAP_MODE) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
	"scan unsupported in AP mode"));
	}
	mp_obj_t list = mp_obj_new_list(0, NULL);
	esp_scan_list = &list;
	wifi_station_scan(NULL, (scan_done_cb_t)esp_scan_cb);
	ETS_POLL_WHILE(esp_scan_list != NULL);
	if (list == MP_OBJ_NULL) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "scan failed"));
	}
	return list;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_scan_obj, esp_scan);

	/// \method isconnected()
	/// Return True if connected to an AP and an IP address has been assigned,
	/// false otherwise.
	STATIC mp_obj_t esp_isconnected(mp_obj_t self_in) {
	wlan_if_obj_t *self = MP_OBJ_TO_PTR(self_in);
	if (self->if_id == STATION_IF) {
	if (wifi_station_get_connect_status() == STATION_GOT_IP) {
	return mp_const_true;
	}
	} else {
	if (wifi_softap_get_station_num() > 0) {
	return mp_const_true;
	}
	}
	return mp_const_false;
	}

	STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_isconnected_obj, esp_isconnected);

	STATIC mp_obj_t esp_mac(mp_uint_t n_args, const mp_obj_t *args) {
	wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
	uint8_t mac[6];
	if (n_args == 1) {
	wifi_get_macaddr(self->if_id, mac);
	return mp_obj_new_bytes(mac, sizeof(mac));
	} else {
	mp_buffer_info_t bufinfo;
	mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_READ);

	if (bufinfo.len != 6) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
	"invalid buffer length"));
	}

	wifi_set_macaddr(self->if_id, bufinfo.buf);
	return mp_const_none;
	}
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_mac_obj, 1, 2, esp_mac);

	STATIC mp_obj_t esp_ifconfig(mp_obj_t self_in) {
	wlan_if_obj_t *self = MP_OBJ_TO_PTR(self_in);
	struct ip_info info;
	wifi_get_ip_info(self->if_id, &info);
	mp_obj_t ifconfig[4] = {
	netutils_format_ipv4_addr((uint8_t*)&info.ip, NETUTILS_BIG),
	netutils_format_ipv4_addr((uint8_t*)&info.netmask, NETUTILS_BIG),
	netutils_format_ipv4_addr((uint8_t*)&info.gw, NETUTILS_BIG),
	MP_OBJ_NEW_QSTR(MP_QSTR_), // no DNS server
	};
	return mp_obj_new_tuple(4, ifconfig);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_ifconfig_obj, esp_ifconfig);

	STATIC mp_obj_t esp_config(size_t n_args, const mp_obj_t args, mp_map_t kwargs) {
	if (n_args != 1 && kwargs->used != 0) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
	"either pos or kw args are allowed"));
	}

	wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
	union {
	struct station_config sta;
	struct softap_config ap;
	} cfg;

	if (self->if_id == STATION_IF) {
	error_check(wifi_station_get_config(&cfg.sta), "can't get STA config");
	} else {
	error_check(wifi_softap_get_config(&cfg.ap), "can't get AP config");
	}

	if (kwargs->used != 0) {

	for (mp_uint_t i = 0; i < kwargs->alloc; i++) {
	if (MP_MAP_SLOT_IS_FILLED(kwargs, i)) {
	#define QS(x) (uintptr_t)MP_OBJ_NEW_QSTR(x)
	switch ((uintptr_t)kwargs->table[i].key) {
	case QS(MP_QSTR_essid): {
	mp_uint_t len;
	const char *s = mp_obj_str_get_data(kwargs->table[i].value, &len);
	len = MIN(len, sizeof(cfg.ap.ssid));
	memcpy(cfg.ap.ssid, s, len);
	cfg.ap.ssid_len = len;
	break;
	}
	default:
	goto unknown;
	}
	#undef QS
	}
	}

	if (self->if_id == STATION_IF) {
	error_check(wifi_station_set_config(&cfg.sta), "can't set STA config");
	} else {
	error_check(wifi_softap_set_config(&cfg.ap), "can't set AP config");
	}

	return mp_const_none;
	}

	// Get config

	if (n_args != 2) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
	"can query only one param"));
	}

	#define QS(x) (uintptr_t)MP_OBJ_NEW_QSTR(x)
	switch ((uintptr_t)args[1]) {
	case QS(MP_QSTR_essid):
	return mp_obj_new_str((char*)cfg.ap.ssid, cfg.ap.ssid_len, false);
	}
	#undef QS

	unknown:
	nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
	"unknown config param"));
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_config_obj, 1, esp_config);

	STATIC const mp_map_elem_t wlan_if_locals_dict_table[] = {
	{ MP_OBJ_NEW_QSTR(MP_QSTR_active), (mp_obj_t)&esp_active_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&esp_connect_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_disconnect), (mp_obj_t)&esp_disconnect_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_status), (mp_obj_t)&esp_status_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&esp_scan_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_isconnected), (mp_obj_t)&esp_isconnected_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_mac), (mp_obj_t)&esp_mac_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_config), (mp_obj_t)&esp_config_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_ifconfig), (mp_obj_t)&esp_ifconfig_obj },
	};

	STATIC MP_DEFINE_CONST_DICT(wlan_if_locals_dict, wlan_if_locals_dict_table);

	const mp_obj_type_t wlan_if_type = {
	{ &mp_type_type },
	.name = MP_QSTR_WLAN,
	.locals_dict = (mp_obj_t)&wlan_if_locals_dict,
	};

	STATIC mp_obj_t esp_wifi_mode(mp_uint_t n_args, const mp_obj_t *args) {
	if (n_args == 0) {
	return mp_obj_new_int(wifi_get_opmode());
	} else {
	wifi_set_opmode(mp_obj_get_int(args[0]));
	return mp_const_none;
	}
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_wifi_mode_obj, 0, 1, esp_wifi_mode);

	STATIC mp_obj_t esp_phy_mode(mp_uint_t n_args, const mp_obj_t *args) {
	if (n_args == 0) {
	return mp_obj_new_int(wifi_get_phy_mode());
	} else {
	wifi_set_phy_mode(mp_obj_get_int(args[0]));
	return mp_const_none;
	}
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_phy_mode_obj, 0, 1, esp_phy_mode);

	STATIC const mp_map_elem_t mp_module_network_globals_table[] = {
	{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_network) },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_WLAN), (mp_obj_t)&get_wlan_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_wifi_mode), (mp_obj_t)&esp_wifi_mode_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_phy_mode), (mp_obj_t)&esp_phy_mode_obj },

	#if MODNETWORK_INCLUDE_CONSTANTS
	{ MP_OBJ_NEW_QSTR(MP_QSTR_STA_IF),
	MP_OBJ_NEW_SMALL_INT(STATION_IF)},
	{ MP_OBJ_NEW_QSTR(MP_QSTR_AP_IF),
	MP_OBJ_NEW_SMALL_INT(SOFTAP_IF)},

	{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_IDLE),
	MP_OBJ_NEW_SMALL_INT(STATION_IDLE)},
	{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_CONNECTING),
	MP_OBJ_NEW_SMALL_INT(STATION_CONNECTING)},
	{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_WRONG_PASSWORD),
	MP_OBJ_NEW_SMALL_INT(STATION_WRONG_PASSWORD)},
	{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_NO_AP_FOUND),
	MP_OBJ_NEW_SMALL_INT(STATION_NO_AP_FOUND)},
	{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_CONNECT_FAIL),
	MP_OBJ_NEW_SMALL_INT(STATION_CONNECT_FAIL)},
	{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_GOT_IP),
	MP_OBJ_NEW_SMALL_INT(STATION_GOT_IP)},

	{ MP_OBJ_NEW_QSTR(MP_QSTR_MODE_11B),
	MP_OBJ_NEW_SMALL_INT(PHY_MODE_11B) },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_MODE_11G),
	MP_OBJ_NEW_SMALL_INT(PHY_MODE_11G) },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_MODE_11N),
	MP_OBJ_NEW_SMALL_INT(PHY_MODE_11N) },
	#endif
	};

	STATIC MP_DEFINE_CONST_DICT(mp_module_network_globals, mp_module_network_globals_table);

	const mp_obj_module_t network_module = {
	.base = { &mp_type_module },
	.name = MP_QSTR_network,
	.globals = (mp_obj_dict_t*)&mp_module_network_globals,
	};