mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
synced 2025-05-20 00:27:19 +08:00
129 lines
4.0 KiB
C
129 lines
4.0 KiB
C
/* Power save Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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/*
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this example shows how to use power save mode
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set a router or a AP using the same SSID&PASSWORD as configuration of this example.
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start esp8266 and when it connected to AP it will enter power save mode
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*/
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "rom/ets_sys.h"
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#include "esp_wifi.h"
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#include "esp_sleep.h"
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#include "esp_event_loop.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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/*set the ssid and password via "idf.py menuconfig"*/
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#define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
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#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
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#if CONFIG_EXAMPLE_POWER_SAVE_MIN_MODEM
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#define DEFAULT_PS_MODE WIFI_PS_MIN_MODEM
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#elif CONFIG_EXAMPLE_POWER_SAVE_MAX_MODEM
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#define DEFAULT_PS_MODE WIFI_PS_MAX_MODEM
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#elif CONFIG_EXAMPLE_POWER_SAVE_NONE
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#define DEFAULT_PS_MODE WIFI_PS_NONE
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#else
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#define DEFAULT_PS_MODE WIFI_PS_NONE
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#endif /*CONFIG_POWER_SAVE_MODEM*/
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/* FreeRTOS event group to signal when we are connected*/
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static EventGroupHandle_t wifi_event_group;
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static const char *TAG = "power_save";
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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/* For accessing reason codes in case of disconnection */
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system_event_info_t *info = &event->event_info;
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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ESP_LOGI(TAG, "got ip:%s",
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ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
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break;
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case SYSTEM_EVENT_AP_STACONNECTED:
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ESP_LOGI(TAG, "station:"MACSTR" join, AID=%d",
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MAC2STR(event->event_info.sta_connected.mac),
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event->event_info.sta_connected.aid);
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break;
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case SYSTEM_EVENT_AP_STADISCONNECTED:
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ESP_LOGI(TAG, "station:"MACSTR"leave, AID=%d",
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MAC2STR(event->event_info.sta_disconnected.mac),
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event->event_info.sta_disconnected.aid);
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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ESP_LOGE(TAG, "Disconnect reason : %d", info->disconnected.reason);
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if (info->disconnected.reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
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/*Switch to 802.11 bgn mode */
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esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
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}
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esp_wifi_connect();
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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/*init wifi as sta and set power save mode*/
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static void wifi_power_save(void)
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{
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wifi_event_group = xEventGroupCreate();
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tcpip_adapter_init();
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ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL) );
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = EXAMPLE_ESP_WIFI_SSID,
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.password = EXAMPLE_ESP_WIFI_PASS
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},
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};
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
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ESP_ERROR_CHECK(esp_wifi_start() );
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ESP_LOGI(TAG, "wifi_init_sta finished.");
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ESP_LOGI(TAG, "connect to ap SSID:%s password:%s",
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EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
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ESP_LOGI(TAG, "esp_wifi_set_ps().");
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esp_wifi_set_ps(DEFAULT_PS_MODE);
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#if CONFIG_PM_ENABLE
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esp_pm_config_esp8266_t pm_config = {
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.light_sleep_enable = true
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};
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ESP_ERROR_CHECK( esp_pm_configure(&pm_config) );
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#endif // CONFIG_PM_ENABLE
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}
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void app_main(void)
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{
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//Initialize NVS
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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ret = nvs_flash_init();
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}
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ESP_ERROR_CHECK(ret);
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wifi_power_save();
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}
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