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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.
*/
#include "common-hal/wifi/__init__.h"
#include "shared-bindings/ipaddress/IPv4Address.h"
#include "shared-bindings/wifi/Radio.h"
#include "py/runtime.h"
#include "components/esp_wifi/include/esp_wifi.h"
#include "components/heap/include/esp_heap_caps.h"
wifi_radio_obj_t common_hal_wifi_radio_obj;
#include "components/log/include/esp_log.h"
static const char* TAG = "wifi";
static void event_handler(void* arg, esp_event_base_t event_base,
int32_t event_id, void* event_data) {
wifi_radio_obj_t* radio = arg;
if (event_base == WIFI_EVENT) {
switch (event_id) {
case WIFI_EVENT_SCAN_DONE:
ESP_EARLY_LOGW(TAG, "scan");
xEventGroupSetBits(radio->event_group_handle, WIFI_SCAN_DONE_BIT);
break;
case WIFI_EVENT_STA_START:
ESP_EARLY_LOGW(TAG, "start");
break;
case WIFI_EVENT_STA_STOP:
ESP_EARLY_LOGW(TAG, "stop");
break;
case WIFI_EVENT_STA_CONNECTED:
ESP_EARLY_LOGW(TAG, "connected");
break;
case WIFI_EVENT_STA_DISCONNECTED: {
ESP_EARLY_LOGW(TAG, "disconnected");
wifi_event_sta_disconnected_t* d = (wifi_event_sta_disconnected_t*) event_data;
uint8_t reason = d->reason;
ESP_EARLY_LOGW(TAG, "reason %d 0x%02x", reason, reason);
if (radio->retries_left > 0 &&
(reason == WIFI_REASON_AUTH_EXPIRE ||
reason == WIFI_REASON_NOT_AUTHED ||
reason == WIFI_REASON_ASSOC_EXPIRE ||
reason == WIFI_REASON_CONNECTION_FAIL ||
reason == WIFI_REASON_4WAY_HANDSHAKE_TIMEOUT)) {
radio->retries_left--;
ESP_EARLY_LOGI(TAG, "Retrying connect. %d retries remaining", radio->retries_left);
esp_wifi_connect();
return;
}
radio->last_disconnect_reason = reason;
xEventGroupSetBits(radio->event_group_handle, WIFI_DISCONNECTED_BIT);
}
// Cases to handle later.
// case WIFI_EVENT_STA_AUTHMODE_CHANGE:
default:
break;
}
}
if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
ESP_EARLY_LOGW(TAG, "got ip");
radio->retries_left = radio->starting_retries;
xEventGroupSetBits(radio->event_group_handle, WIFI_CONNECTED_BIT);
}
}
static bool wifi_inited, wifi_ever_inited;
void common_hal_wifi_init(void) {
wifi_inited = true;
common_hal_wifi_radio_obj.base.type = &wifi_radio_type;
if (!wifi_ever_inited) {
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
}
wifi_ever_inited = true;
wifi_radio_obj_t* self = &common_hal_wifi_radio_obj;
self->netif = esp_netif_create_default_wifi_sta();
// Even though we just called esp_netif_create_default_wifi_sta,
// station mode isn't actually ready for use until esp_wifi_set_mode()
// is called and the configuration is loaded via esp_wifi_set_config().
// Set both convienence flags to false so it's not forgotten.
self->sta_mode = 0;
self->ap_mode = 0;
self->event_group_handle = xEventGroupCreateStatic(&self->event_group);
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
ESP_EVENT_ANY_ID,
&event_handler,
self,
&self->handler_instance_all_wifi));
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
IP_EVENT_STA_GOT_IP,
&event_handler,
self,
&self->handler_instance_got_ip));
wifi_init_config_t config = WIFI_INIT_CONFIG_DEFAULT();
esp_err_t result = esp_wifi_init(&config);
if (result == ESP_ERR_NO_MEM) {
mp_raise_msg(&mp_type_MemoryError, translate("Failed to allocate Wifi memory"));
} else if (result != ESP_OK) {
mp_raise_RuntimeError(translate("Failed to init wifi"));
}
common_hal_wifi_radio_set_enabled(self, true);
}
void wifi_reset(void) {
if (!wifi_inited) {
return;
}
wifi_radio_obj_t* radio = &common_hal_wifi_radio_obj;
common_hal_wifi_radio_set_enabled(radio, false);
ESP_ERROR_CHECK(esp_event_handler_instance_unregister(WIFI_EVENT,
ESP_EVENT_ANY_ID,
radio->handler_instance_all_wifi));
ESP_ERROR_CHECK(esp_event_handler_instance_unregister(IP_EVENT,
IP_EVENT_STA_GOT_IP,
radio->handler_instance_got_ip));
ESP_ERROR_CHECK(esp_wifi_deinit());
esp_netif_destroy(radio->netif);
radio->netif = NULL;
}
void ipaddress_ipaddress_to_esp_idf(mp_obj_t ip_address, ip_addr_t* esp_ip_address) {
if (!MP_OBJ_IS_TYPE(ip_address, &ipaddress_ipv4address_type)) {
mp_raise_ValueError(translate("Only IPv4 addresses supported"));
}
mp_obj_t packed = common_hal_ipaddress_ipv4address_get_packed(ip_address);
size_t len;
const char* bytes = mp_obj_str_get_data(packed, &len);
IP_ADDR4(esp_ip_address, bytes[0], bytes[1], bytes[2], bytes[3]);
}
void common_hal_wifi_gc_collect(void) {
common_hal_wifi_radio_gc_collect(&common_hal_wifi_radio_obj);
}
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