circuitpython/shared-bindings/wifi/Radio.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
*
* 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.
*/
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#include "shared-bindings/wifi/__init__.h"
#include <regex.h>
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#include <string.h>
#include "py/runtime.h"
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#include "py/objproperty.h"
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//| class Radio:
//| """Native wifi radio.
//|
//| This class manages the station and access point functionality of the native
//| Wifi radio.
//|
//| """
//|
//| def __init__(self) -> None:
//| """You cannot create an instance of `wifi.Radio`.
//| Use `wifi.radio` to access the sole instance available."""
//| ...
//|
//| enabled: bool
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//| """``True`` when the wifi radio is enabled.
//| If you set the value to ``False``, any open sockets will be closed.
//| """
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//|
STATIC mp_obj_t wifi_radio_get_enabled(mp_obj_t self) {
return mp_obj_new_bool(common_hal_wifi_radio_get_enabled(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_enabled_obj, wifi_radio_get_enabled);
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static mp_obj_t wifi_radio_set_enabled(mp_obj_t self, mp_obj_t value) {
const bool enabled = mp_obj_is_true(value);
common_hal_wifi_radio_set_enabled(self, enabled);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(wifi_radio_set_enabled_obj, wifi_radio_set_enabled);
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const mp_obj_property_t wifi_radio_enabled_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&wifi_radio_get_enabled_obj,
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(mp_obj_t)&wifi_radio_set_enabled_obj,
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(mp_obj_t)&mp_const_none_obj },
};
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//| mac_address: bytes
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//| """MAC address of the wifi radio. (read-only)"""
//|
STATIC mp_obj_t wifi_radio_get_mac_address(mp_obj_t self) {
return MP_OBJ_FROM_PTR(common_hal_wifi_radio_get_mac_address(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_mac_address_obj, wifi_radio_get_mac_address);
const mp_obj_property_t wifi_radio_mac_address_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&wifi_radio_get_mac_address_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
//| def start_scanning_networks(self, *, start_channel: int = 1, stop_channel: int = 11) -> Iterable[Network]:
//| """Scans for available wifi networks over the given channel range. Make sure the channels are allowed in your country."""
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//| ...
//|
STATIC mp_obj_t wifi_radio_start_scanning_networks(mp_obj_t self_in) {
wifi_radio_obj_t *self = MP_OBJ_TO_PTR(self_in);
return common_hal_wifi_radio_start_scanning_networks(self);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_start_scanning_networks_obj, wifi_radio_start_scanning_networks);
//| def stop_scanning_networks(self) -> None:
//| """Stop scanning for Wifi networks and free any resources used to do it."""
//| ...
//|
STATIC mp_obj_t wifi_radio_stop_scanning_networks(mp_obj_t self_in) {
wifi_radio_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_wifi_radio_stop_scanning_networks(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_stop_scanning_networks_obj, wifi_radio_stop_scanning_networks);
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//| hostname: ReadableBuffer
//| """Hostname for wifi interface. When the hostname is altered after interface started/connected
//| the changes would only be reflected once the interface restarts/reconnects."""
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//|
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STATIC mp_obj_t wifi_radio_get_hostname(mp_obj_t self_in) {
wifi_radio_obj_t *self = MP_OBJ_TO_PTR(self_in);
return common_hal_wifi_radio_get_hostname(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_hostname_obj, wifi_radio_get_hostname);
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STATIC mp_obj_t wifi_radio_set_hostname(mp_obj_t self_in, mp_obj_t hostname_in) {
mp_buffer_info_t hostname;
mp_get_buffer_raise(hostname_in, &hostname, MP_BUFFER_READ);
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if (hostname.len < 1 || hostname.len > 253) {
mp_raise_ValueError(translate("Hostname must be between 1 and 253 characters"));
}
regex_t regex; //validate hostname according to RFC 1123
regcomp(&regex,"^(([a-z0-9]|[a-z0-9][a-z0-9\\-]{0,61}[a-z0-9])\\.)*([a-z0-9]|[a-z0-9][a-z0-9\\-]{0,61}[a-z0-9])$", REG_EXTENDED | REG_ICASE | REG_NOSUB);
if (regexec(&regex, hostname.buf, 0, NULL, 0)) {
mp_raise_ValueError(translate("invalid hostname"));
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}
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regfree(&regex);
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wifi_radio_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_wifi_radio_set_hostname(self, hostname.buf);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(wifi_radio_set_hostname_obj, wifi_radio_set_hostname);
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const mp_obj_property_t wifi_radio_hostname_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&wifi_radio_get_hostname_obj,
(mp_obj_t)&wifi_radio_set_hostname_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| def connect(self,
//| ssid: ReadableBuffer,
//| password: ReadableBuffer = b"",
//| *,
//| channel: Optional[int] = 0,
//| bssid: Optional[ReadableBuffer] = b"",
//| timeout: Optional[float] = None) -> bool:
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//| """Connects to the given ssid and waits for an ip address. Reconnections are handled
//| automatically once one connection succeeds.
//|
//| By default, this will scan all channels and connect to the access point (AP) with the
//| given ``ssid`` and greatest signal strength (rssi).
//|
//| If ``channel`` is given, the scan will begin with the given channel and connect to
//| the first AP with the given ``ssid``. This can speed up the connection time
//| significantly because a full scan doesn't occur.
//|
//| If ``bssid`` is given, the scan will start at the first channel or the one given and
//| connect to the AP with the given ``bssid`` and ``ssid``."""
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//| ...
//|
STATIC mp_obj_t wifi_radio_connect(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_ssid, ARG_password, ARG_channel, ARG_bssid, ARG_timeout };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_ssid, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_password, MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
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{ MP_QSTR_channel, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
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{ MP_QSTR_bssid, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
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{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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};
wifi_radio_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
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);
mp_float_t timeout = 0;
if (args[ARG_timeout].u_obj != mp_const_none) {
timeout = mp_obj_get_float(args[ARG_timeout].u_obj);
}
mp_buffer_info_t ssid;
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mp_get_buffer_raise(args[ARG_ssid].u_obj, &ssid, MP_BUFFER_READ);
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mp_buffer_info_t password;
password.len = 0;
if (args[ARG_password].u_obj != MP_OBJ_NULL) {
mp_get_buffer_raise(args[ARG_password].u_obj, &password, MP_BUFFER_READ);
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if (password.len > 0 && (password.len < 8 || password.len > 63)) {
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mp_raise_ValueError(translate("WiFi password must be between 8 and 63 characters"));
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}
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}
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#define MAC_ADDRESS_LENGTH 6
mp_buffer_info_t bssid;
bssid.len = 0;
// Should probably make sure bssid is just bytes and not something else too
if (args[ARG_bssid].u_obj != MP_OBJ_NULL) {
mp_get_buffer_raise(args[ARG_bssid].u_obj, &bssid, MP_BUFFER_READ);
if (bssid.len != MAC_ADDRESS_LENGTH) {
mp_raise_ValueError(translate("Invalid BSSID"));
}
}
wifi_radio_error_t error = common_hal_wifi_radio_connect(self, ssid.buf, ssid.len, password.buf, password.len, args[ARG_channel].u_int, timeout, bssid.buf, bssid.len);
if (error == WIFI_RADIO_ERROR_AUTH_FAIL) {
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mp_raise_ConnectionError(translate("Authentication failure"));
} else if (error == WIFI_RADIO_ERROR_NO_AP_FOUND) {
mp_raise_ConnectionError(translate("No network with that ssid"));
} else if (error != WIFI_RADIO_ERROR_NONE) {
mp_raise_msg_varg(&mp_type_ConnectionError, translate("Unknown failure %d"), error);
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}
return mp_const_none;
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}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(wifi_radio_connect_obj, 1, wifi_radio_connect);
//| ipv4_gateway: Optional[ipaddress.IPv4Address]
//| """IP v4 Address of the gateway when connected to an access point. None otherwise."""
//|
STATIC mp_obj_t wifi_radio_get_ipv4_gateway(mp_obj_t self) {
return common_hal_wifi_radio_get_ipv4_gateway(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_ipv4_gateway_obj, wifi_radio_get_ipv4_gateway);
const mp_obj_property_t wifi_radio_ipv4_gateway_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&wifi_radio_get_ipv4_gateway_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
//| ipv4_subnet: Optional[ipaddress.IPv4Address]
//| """IP v4 Address of the subnet when connected to an access point. None otherwise."""
//|
STATIC mp_obj_t wifi_radio_get_ipv4_subnet(mp_obj_t self) {
return common_hal_wifi_radio_get_ipv4_subnet(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_ipv4_subnet_obj, wifi_radio_get_ipv4_subnet);
const mp_obj_property_t wifi_radio_ipv4_subnet_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&wifi_radio_get_ipv4_subnet_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
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//| ipv4_address: Optional[ipaddress.IPv4Address]
//| """IP v4 Address of the radio when connected to an access point. None otherwise."""
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//|
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STATIC mp_obj_t wifi_radio_get_ipv4_address(mp_obj_t self) {
return common_hal_wifi_radio_get_ipv4_address(self);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_ipv4_address_obj, wifi_radio_get_ipv4_address);
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const mp_obj_property_t wifi_radio_ipv4_address_obj = {
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.base.type = &mp_type_property,
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.proxy = { (mp_obj_t)&wifi_radio_get_ipv4_address_obj,
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(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
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//| ipv4_dns: Optional[ipaddress.IPv4Address]
//| """IP v4 Address of the DNS server in use when connected to an access point. None otherwise."""
//|
STATIC mp_obj_t wifi_radio_get_ipv4_dns(mp_obj_t self) {
return common_hal_wifi_radio_get_ipv4_dns(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_ipv4_dns_obj, wifi_radio_get_ipv4_dns);
const mp_obj_property_t wifi_radio_ipv4_dns_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&wifi_radio_get_ipv4_dns_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
//| ap_info: Optional[Network]
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//| """Network object containing BSSID, SSID, authmode, channel, country and RSSI when connected to an access point. None otherwise."""
//|
STATIC mp_obj_t wifi_radio_get_ap_info(mp_obj_t self) {
return common_hal_wifi_radio_get_ap_info(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(wifi_radio_get_ap_info_obj, wifi_radio_get_ap_info);
const mp_obj_property_t wifi_radio_ap_info_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&wifi_radio_get_ap_info_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
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//| def ping(self, ip: ipaddress.IPv4Address, *, timeout: Optional[float] = 0.5) -> float:
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//| """Ping an IP to test connectivity. Returns echo time in seconds.
//| Returns None when it times out."""
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//| ...
//|
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STATIC mp_obj_t wifi_radio_ping(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_ip, ARG_timeout };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_ip, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
};
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wifi_radio_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
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);
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mp_float_t timeout = 0.5;
if (args[ARG_timeout].u_obj != mp_const_none) {
timeout = mp_obj_get_float(args[ARG_timeout].u_obj);
}
mp_int_t time_ms = common_hal_wifi_radio_ping(self, args[ARG_ip].u_obj, timeout);
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if (time_ms == -1) {
return mp_const_none;
}
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return mp_obj_new_float(time_ms / 1000.0);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(wifi_radio_ping_obj, 1, wifi_radio_ping);
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STATIC const mp_rom_map_elem_t wifi_radio_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_enabled), MP_ROM_PTR(&wifi_radio_enabled_obj) },
{ MP_ROM_QSTR(MP_QSTR_mac_address), MP_ROM_PTR(&wifi_radio_mac_address_obj) },
{ MP_ROM_QSTR(MP_QSTR_start_scanning_networks), MP_ROM_PTR(&wifi_radio_start_scanning_networks_obj) },
{ MP_ROM_QSTR(MP_QSTR_stop_scanning_networks), MP_ROM_PTR(&wifi_radio_stop_scanning_networks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_hostname), MP_ROM_PTR(&wifi_radio_hostname_obj) },
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{ MP_ROM_QSTR(MP_QSTR_connect), MP_ROM_PTR(&wifi_radio_connect_obj) },
// { MP_ROM_QSTR(MP_QSTR_connect_to_enterprise), MP_ROM_PTR(&wifi_radio_connect_to_enterprise_obj) },
{ MP_ROM_QSTR(MP_QSTR_ap_info), MP_ROM_PTR(&wifi_radio_ap_info_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ipv4_dns), MP_ROM_PTR(&wifi_radio_ipv4_dns_obj) },
{ MP_ROM_QSTR(MP_QSTR_ipv4_gateway), MP_ROM_PTR(&wifi_radio_ipv4_gateway_obj) },
{ MP_ROM_QSTR(MP_QSTR_ipv4_subnet), MP_ROM_PTR(&wifi_radio_ipv4_subnet_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ipv4_address), MP_ROM_PTR(&wifi_radio_ipv4_address_obj) },
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// { MP_ROM_QSTR(MP_QSTR_access_point_active), MP_ROM_PTR(&wifi_radio_access_point_active_obj) },
// { MP_ROM_QSTR(MP_QSTR_start_access_point), MP_ROM_PTR(&wifi_radio_start_access_point_obj) },
{ MP_ROM_QSTR(MP_QSTR_ping), MP_ROM_PTR(&wifi_radio_ping_obj) },
};
STATIC MP_DEFINE_CONST_DICT(wifi_radio_locals_dict, wifi_radio_locals_dict_table);
const mp_obj_type_t wifi_radio_type = {
.base = { &mp_type_type },
.name = MP_QSTR_Radio,
.locals_dict = (mp_obj_t)&wifi_radio_locals_dict,
};