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添加智能灯固件代码
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kerwincui
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# The following lines of boilerplate have to be in your project's CMakeLists
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# in this exact order for cmake to work correctly
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cmake_minimum_required(VERSION 3.5)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(fast_scan)
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#
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# This is a project Makefile. It is assumed the directory this Makefile resides in is a
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# project subdirectory.
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#
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PROJECT_NAME := fast_scan
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include $(IDF_PATH)/make/project.mk
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# Wifi Fast Scan Example
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This example shows how to use the scan functionality of the Wi-Fi driver of ESP32 for connecting to an AP.
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Two scan methods are supported: fast scan and all channel scan.
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* fast scan: in this mode, scan finishes right after a matching AP is detected, even if channels are not completely scanned. You can set thresholds for signal strength, as well as select desired authentication modes provided by the AP's. The Wi-Fi driver will ignore AP's that fail to meet mentioned criteria.
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* all channel scan: scan will end only after all channels are scanned; the Wi-Fi driver will store 4 of the fully matching AP's. Sort methods for AP's include rssi and authmode. After the scan, the Wi-Fi driver selects the AP that fits best based on the sort.
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After the scan, the Wi-Fi driver will try to connect. Because it needs to to allocate precious dynamic memory to store matching AP's, and, most of the cases, connect to the AP with the strongest reception, it does not need to record all the AP's matched. The number of matches stored is limited to 4 in order to limit dynamic memory usage. Among the 4 matches, AP's are allowed to carry the same SSID name and all possible authentication modes - Open, WEP, WPA and WPA2.
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idf_component_register(SRCS "fast_scan.c"
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INCLUDE_DIRS ".")
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menu "Example Configuration"
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config EXAMPLE_WIFI_SSID
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string "WiFi SSID"
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default "myssid"
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help
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SSID (network name) for the example to connect to.
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config EXAMPLE_WIFI_PASSWORD
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string "WiFi Password"
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default "mypassword"
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help
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WiFi password (WPA or WPA2) for the example to use.
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choice EXAMPLE_SCAN_METHOD
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prompt "scan method"
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default EXAMPLE_WIFI_FAST_SCAN
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help
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scan method for the esp32 to use
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config EXAMPLE_WIFI_FAST_SCAN
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bool "fast"
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config EXAMPLE_WIFI_ALL_CHANNEL_SCAN
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bool "all"
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endchoice
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choice EXAMPLE_SORT_METHOD
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prompt "sort method"
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default EXAMPLE_WIFI_CONNECT_AP_BY_SIGNAL
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help
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sort method for the esp32 to use
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config EXAMPLE_WIFI_CONNECT_AP_BY_SIGNAL
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bool "rssi"
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config EXAMPLE_WIFI_CONNECT_AP_BY_SECURITY
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bool "authmode"
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endchoice
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config EXAMPLE_FAST_SCAN_THRESHOLD
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bool "fast scan threshold"
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default y
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help
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wifi fast scan threshold
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config EXAMPLE_FAST_SCAN_MINIMUM_SIGNAL
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int "fast scan minimum rssi"
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depends on EXAMPLE_FAST_SCAN_THRESHOLD
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range -127 0
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default -127
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help
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rssi is use to measure the signal
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choice EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE
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prompt "fast scan weakest authmode"
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depends on EXAMPLE_FAST_SCAN_THRESHOLD
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default EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_OPEN
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config EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_OPEN
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bool "open"
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config EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_WEP
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bool "wep"
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config EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_WPA
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bool "wpa"
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config EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_WPA2
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bool "wpa2"
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endchoice
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endmenu
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#
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# "main" pseudo-component makefile.
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#
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# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
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/* Scan 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 the All Channel Scan or Fast Scan to connect
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to a Wi-Fi network.
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In the Fast Scan mode, the scan will stop as soon as the first network matching
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the SSID is found. In this mode, an application can set threshold for the
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authentication mode and the Signal strength. Networks that do not meet the
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threshold requirements will be ignored.
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In the All Channel Scan mode, the scan will end only after all the channels
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are scanned, and connection will start with the best network. The networks
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can be sorted based on Authentication Mode or Signal Strength. The priority
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for the Authentication mode is: WPA2 > WPA > WEP > Open
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*/
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#include "freertos/FreeRTOS.h"
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#include "freertos/event_groups.h"
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#include "esp_wifi.h"
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#include "esp_log.h"
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#include "esp_event.h"
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#include "nvs_flash.h"
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/* Set the SSID and Password via project configuration, or can set directly here */
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#define DEFAULT_SSID CONFIG_EXAMPLE_WIFI_SSID
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#define DEFAULT_PWD CONFIG_EXAMPLE_WIFI_PASSWORD
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#if CONFIG_EXAMPLE_WIFI_ALL_CHANNEL_SCAN
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#define DEFAULT_SCAN_METHOD WIFI_ALL_CHANNEL_SCAN
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#elif CONFIG_EXAMPLE_WIFI_FAST_SCAN
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#define DEFAULT_SCAN_METHOD WIFI_FAST_SCAN
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#else
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#define DEFAULT_SCAN_METHOD WIFI_FAST_SCAN
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#endif /*CONFIG_EXAMPLE_SCAN_METHOD*/
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#if CONFIG_EXAMPLE_WIFI_CONNECT_AP_BY_SIGNAL
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#define DEFAULT_SORT_METHOD WIFI_CONNECT_AP_BY_SIGNAL
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#elif CONFIG_EXAMPLE_WIFI_CONNECT_AP_BY_SECURITY
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#define DEFAULT_SORT_METHOD WIFI_CONNECT_AP_BY_SECURITY
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#else
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#define DEFAULT_SORT_METHOD WIFI_CONNECT_AP_BY_SIGNAL
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#endif /*CONFIG_EXAMPLE_SORT_METHOD*/
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#if CONFIG_EXAMPLE_FAST_SCAN_THRESHOLD
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#define DEFAULT_RSSI CONFIG_EXAMPLE_FAST_SCAN_MINIMUM_SIGNAL
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#if CONFIG_EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_OPEN
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#define DEFAULT_AUTHMODE WIFI_AUTH_OPEN
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#elif CONFIG_EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_WEP
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#define DEFAULT_AUTHMODE WIFI_AUTH_WEP
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#elif CONFIG_EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_WPA
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#define DEFAULT_AUTHMODE WIFI_AUTH_WPA_PSK
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#elif CONFIG_EXAMPLE_FAST_SCAN_WEAKEST_AUTHMODE_WPA2
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#define DEFAULT_AUTHMODE WIFI_AUTH_WPA2_PSK
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#else
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#define DEFAULT_AUTHMODE WIFI_AUTH_OPEN
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#endif
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#else
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#define DEFAULT_RSSI -127
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#define DEFAULT_AUTHMODE WIFI_AUTH_OPEN
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#endif /*CONFIG_EXAMPLE_FAST_SCAN_THRESHOLD*/
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static const char *TAG = "scan";
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static void event_handler(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
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esp_wifi_connect();
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} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
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esp_wifi_connect();
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} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
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ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
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ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
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}
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}
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/* Initialize Wi-Fi as sta and set scan method */
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static void fast_scan(void)
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{
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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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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ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, NULL));
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ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, NULL));
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// Initialize default station as network interface instance (esp-netif)
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esp_netif_t *sta_netif = esp_netif_create_default_wifi_sta();
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assert(sta_netif);
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// Initialize and start WiFi
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = DEFAULT_SSID,
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.password = DEFAULT_PWD,
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.scan_method = DEFAULT_SCAN_METHOD,
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.sort_method = DEFAULT_SORT_METHOD,
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.threshold.rssi = DEFAULT_RSSI,
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.threshold.authmode = DEFAULT_AUTHMODE,
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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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}
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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 || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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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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fast_scan();
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}
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