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micropython/ports/esp8266/network_wlan.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015-2016 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 "py/objlist.h"
#include "py/runtime.h"
#include "py/mphal.h"
#include "extmod/modnetwork.h"
#include "shared/netutils/netutils.h"
#include "queue.h"
#include "user_interface.h"
#include "espconn.h"
#include "spi_flash.h"
#include "ets_alt_task.h"
#include "lwip/dns.h"
#include "modnetwork.h"
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);
STATIC const wlan_if_obj_t wlan_objs[] = {
{{&esp_network_wlan_type}, STATION_IF},
{{&esp_network_wlan_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 esp_wlan_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 1, false);
int idx = 0;
if (n_args > 0) {
idx = mp_obj_get_int(args[0]);
if (idx < 0 || idx >= sizeof(wlan_objs)) {
mp_raise_ValueError(NULL);
}
}
return MP_OBJ_FROM_PTR(&wlan_objs[idx]);
}
STATIC mp_obj_t esp_active(size_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;
}
if (mode != NULL_MODE) {
wifi_fpm_do_wakeup();
wifi_fpm_close();
}
error_check(wifi_set_opmode(mode), "Cannot update i/f status");
if (mode == NULL_MODE) {
// Wait for the interfaces to go down before forcing power management
while (wifi_get_opmode() != NULL_MODE) {
ets_loop_iter();
}
wifi_fpm_open();
wifi_fpm_do_sleep(0xfffffff);
}
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(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_ssid, ARG_key, ARG_bssid };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_, MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_, MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ 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);
require_if(pos_args[0], STATION_IF);
struct station_config config = {{0}};
size_t len;
const char *p;
bool set_config = false;
// set parameters based on given args
if (args[ARG_ssid].u_obj != mp_const_none) {
p = mp_obj_str_get_data(args[ARG_ssid].u_obj, &len);
len = MIN(len, sizeof(config.ssid));
memcpy(config.ssid, p, len);
set_config = true;
}
if (args[ARG_key].u_obj != mp_const_none) {
p = mp_obj_str_get_data(args[ARG_key].u_obj, &len);
len = MIN(len, sizeof(config.password));
memcpy(config.password, p, len);
set_config = true;
}
if (args[ARG_bssid].u_obj != mp_const_none) {
p = mp_obj_str_get_data(args[ARG_bssid].u_obj, &len);
if (len != sizeof(config.bssid)) {
mp_raise_ValueError(NULL);
}
config.bssid_set = 1;
memcpy(config.bssid, p, sizeof(config.bssid));
set_config = true;
}
if (set_config) {
error_check(wifi_station_set_config(&config), "Cannot set STA config");
}
wifi_station_set_hostname(mod_network_hostname_data);
error_check(wifi_station_connect(), "Cannot connect to AP");
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_connect_obj, 1, 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(size_t n_args, const mp_obj_t *args) {
wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (n_args == 1) {
// Get link status
if (self->if_id == STATION_IF) {
return MP_OBJ_NEW_SMALL_INT(wifi_station_get_connect_status());
}
return MP_OBJ_NEW_SMALL_INT(-1);
} else {
// Get specific status parameter
switch (mp_obj_str_get_qstr(args[1])) {
case MP_QSTR_rssi:
if (self->if_id == STATION_IF) {
return MP_OBJ_NEW_SMALL_INT(wifi_station_get_rssi());
}
}
mp_raise_ValueError(MP_ERROR_TEXT("unknown status param"));
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_status_obj, 1, 2, esp_status);
STATIC mp_obj_t *esp_scan_list = NULL;
STATIC void esp_scan_cb(void *result, STATUS status) {
if (esp_scan_list == NULL) {
// called unexpectedly
return;
}
if (result && status == 0) {
// we need to catch any memory errors
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
for (struct bss_info *bs = result; bs; bs = STAILQ_NEXT(bs, next)) {
mp_obj_tuple_t *t = mp_obj_new_tuple(6, NULL);
#if 1
// struct bss_info::ssid_len is not documented in SDK API Guide,
// but is present in SDK headers since 1.4.0
t->items[0] = mp_obj_new_bytes(bs->ssid, bs->ssid_len);
#else
t->items[0] = mp_obj_new_bytes(bs->ssid, strlen((char *)bs->ssid));
#endif
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));
}
nlr_pop();
} else {
mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
// indicate error
*esp_scan_list = MP_OBJ_NULL;
}
} else {
// indicate error
*esp_scan_list = MP_OBJ_NULL;
}
esp_scan_list = NULL;
}
STATIC mp_obj_t esp_scan(mp_obj_t self_in) {
require_if(self_in, STATION_IF);
if ((wifi_get_opmode() & STATION_MODE) == 0) {
mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("STA must be active"));
}
mp_obj_t list = mp_obj_new_list(0, NULL);
esp_scan_list = &list;
struct scan_config config = {0};
config.show_hidden = 1;
wifi_station_scan(&config, (scan_done_cb_t)esp_scan_cb);
while (esp_scan_list != NULL) {
// our esp_scan_cb is called via ets_loop_iter so it's safe to set the
// esp_scan_list variable to NULL without disabling interrupts
if (MP_STATE_THREAD(mp_pending_exception) != NULL) {
esp_scan_list = NULL;
mp_handle_pending(true);
}
ets_loop_iter();
}
if (list == MP_OBJ_NULL) {
mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("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_ifconfig(size_t n_args, const mp_obj_t *args) {
wlan_if_obj_t *self = MP_OBJ_TO_PTR(args[0]);
struct ip_info info;
ip_addr_t dns_addr;
wifi_get_ip_info(self->if_id, &info);
if (n_args == 1) {
// get
dns_addr = dns_getserver(0);
mp_obj_t tuple[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),
netutils_format_ipv4_addr((uint8_t *)&dns_addr, NETUTILS_BIG),
};
return mp_obj_new_tuple(4, tuple);
} else if (args[1] == MP_OBJ_NEW_QSTR(MP_QSTR_dhcp)) {
// use DHCP to configure the IP addresses
require_if(args[0], STATION_IF);
wifi_station_dhcpc_start();
return mp_const_none;
} else {
// set
mp_obj_t *items;
bool restart_dhcp_server = false;
mp_obj_get_array_fixed_n(args[1], 4, &items);
netutils_parse_ipv4_addr(items[0], (void *)&info.ip, NETUTILS_BIG);
if (mp_obj_is_integer(items[1])) {
// allow numeric netmask, i.e.:
// 24 -> 255.255.255.0
// 16 -> 255.255.0.0
// etc...
uint32_t *m = (uint32_t *)&info.netmask;
*m = htonl(0xffffffff << (32 - mp_obj_get_int(items[1])));
} else {
netutils_parse_ipv4_addr(items[1], (void *)&info.netmask, NETUTILS_BIG);
}
netutils_parse_ipv4_addr(items[2], (void *)&info.gw, NETUTILS_BIG);
netutils_parse_ipv4_addr(items[3], (void *)&dns_addr, NETUTILS_BIG);
// To set a static IP we have to disable DHCP first
if (self->if_id == STATION_IF) {
wifi_station_dhcpc_stop();
} else {
restart_dhcp_server = wifi_softap_dhcps_status();
wifi_softap_dhcps_stop();
}
if (!wifi_set_ip_info(self->if_id, &info)) {
mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("wifi_set_ip_info() failed"));
}
dns_setserver(0, &dns_addr);
if (restart_dhcp_server) {
wifi_softap_dhcps_start();
}
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_ifconfig_obj, 1, 2, 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) {
mp_raise_TypeError(MP_ERROR_TEXT("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");
}
int req_if = -1;
if (kwargs->used != 0) {
for (mp_uint_t i = 0; i < kwargs->alloc; i++) {
if (mp_map_slot_is_filled(kwargs, i)) {
switch (mp_obj_str_get_qstr(kwargs->table[i].key)) {
case MP_QSTR_mac: {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(kwargs->table[i].value, &bufinfo, MP_BUFFER_READ);
if (bufinfo.len != 6) {
mp_raise_ValueError(MP_ERROR_TEXT("invalid buffer length"));
}
wifi_set_macaddr(self->if_id, bufinfo.buf);
break;
}
case MP_QSTR_ssid:
case MP_QSTR_essid: {
req_if = SOFTAP_IF;
size_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;
}
case MP_QSTR_hidden: {
req_if = SOFTAP_IF;
cfg.ap.ssid_hidden = mp_obj_is_true(kwargs->table[i].value);
break;
}
case MP_QSTR_security:
case MP_QSTR_authmode: {
req_if = SOFTAP_IF;
cfg.ap.authmode = mp_obj_get_int(kwargs->table[i].value);
break;
}
case MP_QSTR_key:
case MP_QSTR_password: {
req_if = SOFTAP_IF;
size_t len;
const char *s = mp_obj_str_get_data(kwargs->table[i].value, &len);
len = MIN(len, sizeof(cfg.ap.password) - 1);
memcpy(cfg.ap.password, s, len);
cfg.ap.password[len] = 0;
break;
}
case MP_QSTR_channel: {
req_if = SOFTAP_IF;
cfg.ap.channel = mp_obj_get_int(kwargs->table[i].value);
break;
}
case MP_QSTR_hostname:
case MP_QSTR_dhcp_hostname: {
// TODO: Deprecated. Use network.hostname(name) instead.
mod_network_hostname(1, &kwargs->table[i].value);
break;
}
case MP_QSTR_protocol: {
wifi_set_phy_mode(mp_obj_get_int(kwargs->table[i].value));
break;
}
case MP_QSTR_txpower: {
int8_t power = mp_obj_get_float(kwargs->table[i].value) * 4;
system_phy_set_max_tpw(power);
break;
}
case MP_QSTR_pm: {
wifi_set_sleep_type(mp_obj_get_int(kwargs->table[i].value));
break;
}
default:
goto unknown;
}
}
}
// We post-check interface requirements to save on code size
if (req_if >= 0) {
require_if(args[0], req_if);
}
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) {
mp_raise_TypeError(MP_ERROR_TEXT("can query only one param"));
}
mp_obj_t val;
qstr key = mp_obj_str_get_qstr(args[1]);
switch (key) {
case MP_QSTR_mac: {
uint8_t mac[6];
wifi_get_macaddr(self->if_id, mac);
return mp_obj_new_bytes(mac, sizeof(mac));
}
case MP_QSTR_ssid:
case MP_QSTR_essid:
if (self->if_id == STATION_IF) {
val = mp_obj_new_str((char *)cfg.sta.ssid, strlen((char *)cfg.sta.ssid));
} else {
val = mp_obj_new_str((char *)cfg.ap.ssid, cfg.ap.ssid_len);
}
break;
case MP_QSTR_hidden:
req_if = SOFTAP_IF;
val = mp_obj_new_bool(cfg.ap.ssid_hidden);
break;
case MP_QSTR_security:
case MP_QSTR_authmode:
req_if = SOFTAP_IF;
val = MP_OBJ_NEW_SMALL_INT(cfg.ap.authmode);
break;
case MP_QSTR_channel:
req_if = SOFTAP_IF;
val = MP_OBJ_NEW_SMALL_INT(cfg.ap.channel);
break;
case MP_QSTR_hostname:
case MP_QSTR_dhcp_hostname: {
// TODO: Deprecated. Use network.hostname() instead.
req_if = STATION_IF;
val = mod_network_hostname(0, NULL);
break;
}
case MP_QSTR_protocol: {
val = mp_obj_new_int(wifi_get_phy_mode());
break;
}
case MP_QSTR_pm: {
val = MP_OBJ_NEW_SMALL_INT(wifi_get_sleep_type());
break;
}
default:
goto unknown;
}
// We post-check interface requirements to save on code size
if (req_if >= 0) {
require_if(args[0], req_if);
}
return val;
unknown:
mp_raise_ValueError(MP_ERROR_TEXT("unknown config param"));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_config_obj, 1, esp_config);
STATIC const mp_rom_map_elem_t wlan_if_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_active), MP_ROM_PTR(&esp_active_obj) },
{ MP_ROM_QSTR(MP_QSTR_connect), MP_ROM_PTR(&esp_connect_obj) },
{ MP_ROM_QSTR(MP_QSTR_disconnect), MP_ROM_PTR(&esp_disconnect_obj) },
{ MP_ROM_QSTR(MP_QSTR_status), MP_ROM_PTR(&esp_status_obj) },
{ MP_ROM_QSTR(MP_QSTR_scan), MP_ROM_PTR(&esp_scan_obj) },
{ MP_ROM_QSTR(MP_QSTR_isconnected), MP_ROM_PTR(&esp_isconnected_obj) },
{ MP_ROM_QSTR(MP_QSTR_config), MP_ROM_PTR(&esp_config_obj) },
{ MP_ROM_QSTR(MP_QSTR_ifconfig), MP_ROM_PTR(&esp_ifconfig_obj) },
// Constants
{ MP_ROM_QSTR(MP_QSTR_PM_NONE), MP_ROM_INT(NONE_SLEEP_T) },
{ MP_ROM_QSTR(MP_QSTR_PM_PERFORMANCE), MP_ROM_INT(MODEM_SLEEP_T) },
{ MP_ROM_QSTR(MP_QSTR_PM_POWERSAVE), MP_ROM_INT(LIGHT_SLEEP_T) },
};
STATIC MP_DEFINE_CONST_DICT(wlan_if_locals_dict, wlan_if_locals_dict_table);
MP_DEFINE_CONST_OBJ_TYPE(
esp_network_wlan_type,
MP_QSTR_WLAN,
MP_TYPE_FLAG_NONE,
make_new, esp_wlan_make_new,
locals_dict, &wlan_if_locals_dict
);
STATIC mp_obj_t esp_phy_mode(size_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;
}
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(esp_network_phy_mode_obj, 0, 1, esp_phy_mode);
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