feat(wifi): support wifi connection.

This commit is contained in:
Ivan Li 2022-11-12 22:42:03 +08:00
parent 601bbc2346
commit 5114cd3ec7
4 changed files with 162 additions and 5 deletions

11
.vscode/settings.json vendored
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@ -11,5 +11,14 @@
"idf.pythonBinPath": "/Users/ivan/.espressif/python_env/idf4.4_py3.8_env/bin/python", "idf.pythonBinPath": "/Users/ivan/.espressif/python_env/idf4.4_py3.8_env/bin/python",
"idf.toolsPath": "/Users/ivan/.espressif", "idf.toolsPath": "/Users/ivan/.espressif",
"idf.gitPath": "/usr/bin/git", "idf.gitPath": "/usr/bin/git",
"idf.flashType": "JTAG" "idf.flashType": "JTAG",
"files.associations": {
"*.ejs": "html",
"css": "postcss",
"scss": "postcss",
"*.cjson": "jsonc",
"*.wxss": "css",
"*.wxs": "javascript",
"*.inc": "c"
}
} }

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@ -1,2 +1,2 @@
idf_component_register(SRCS "main.c" idf_component_register(SRCS "main.c" "wifi.c"
INCLUDE_DIRS ".") INCLUDE_DIRS ".")

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@ -12,8 +12,9 @@
#include "freertos/task.h" #include "freertos/task.h"
#include "led_strip.h" #include "led_strip.h"
#include "sdkconfig.h" #include "sdkconfig.h"
#include "wifi.c"
static const char *TAG = "example"; static const char *TAG = "ScreenBgLight";
#define RMT_TX_CHANNEL RMT_CHANNEL_0 #define RMT_TX_CHANNEL RMT_CHANNEL_0
#define RMT_TX_GPIO 1 #define RMT_TX_GPIO 1
@ -98,6 +99,8 @@ void app_main(void) {
ESP_ERROR_CHECK(strip->clear(strip, 100)); ESP_ERROR_CHECK(strip->clear(strip, 100));
// Show simple rainbow chasing pattern // Show simple rainbow chasing pattern
ESP_LOGI(TAG, "LED Rainbow Chase Start"); ESP_LOGI(TAG, "LED Rainbow Chase Start");
connect_wifi();
while (true) { while (true) {
for (int i = 0; i < 3; i++) { for (int i = 0; i < 3; i++) {
for (int j = i; j < STRIP_LED_NUMBER; j += 3) { for (int j = i; j < STRIP_LED_NUMBER; j += 3) {
@ -115,6 +118,4 @@ void app_main(void) {
} }
start_rgb += 60; start_rgb += 60;
} }
connect_wifi()
} }

147
main/wifi.c Normal file
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@ -0,0 +1,147 @@
/* WiFi station Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <string.h>
#include "esp_event.h"
#include "esp_log.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "freertos/task.h"
#include "lwip/err.h"
#include "lwip/sys.h"
#include "nvs_flash.h"
/* The examples use WiFi configuration that you can set via project
configuration menu
If you'd rather not, just change the below entries to strings with
the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
*/
#define EXAMPLE_ESP_WIFI_SSID "Ivan"
#define EXAMPLE_ESP_WIFI_PASS "ivanli.cc"
#define EXAMPLE_ESP_MAXIMUM_RETRY 5
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_WPA2_PSK
/* FreeRTOS event group to signal when we are connected*/
static EventGroupHandle_t s_wifi_event_group;
/* The event group allows multiple bits for each event, but we only care about
* two events:
* - we are connected to the AP with an IP
* - we failed to connect after the maximum amount of retries */
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1
static const char* WIFI_TAG = "ScreenBgLight_WIFI";
static int s_retry_num = 0;
static void event_handler(void* arg, esp_event_base_t event_base,
int32_t event_id, void* event_data) {
if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
esp_wifi_connect();
} else if (event_base == WIFI_EVENT &&
event_id == WIFI_EVENT_STA_DISCONNECTED) {
if (s_retry_num < EXAMPLE_ESP_MAXIMUM_RETRY) {
esp_wifi_connect();
s_retry_num++;
ESP_LOGI(WIFI_TAG, "retry to connect to the AP");
} else {
xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
}
ESP_LOGI(WIFI_TAG, "connect to the AP fail");
} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
ip_event_got_ip_t* event = (ip_event_got_ip_t*)event_data;
ESP_LOGI(WIFI_TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
s_retry_num = 0;
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
}
}
void wifi_init_sta(void) {
s_wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
esp_event_handler_instance_t instance_any_id;
esp_event_handler_instance_t instance_got_ip;
ESP_ERROR_CHECK(esp_event_handler_instance_register(
WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
ESP_ERROR_CHECK(esp_event_handler_instance_register(
IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
wifi_config_t wifi_config = {
.sta =
{
.ssid = EXAMPLE_ESP_WIFI_SSID,
.password = EXAMPLE_ESP_WIFI_PASS,
/* Setting a password implies station will connect to all security
* modes including WEP/WPA. However these modes are deprecated and
* not advisable to be used. Incase your Access point doesn't
* support WPA2, these mode can be enabled by commenting below
* line */
.threshold.authmode = ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD,
.sae_pwe_h2e = WPA3_SAE_PWE_BOTH,
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
ESP_ERROR_CHECK(esp_wifi_start());
ESP_LOGI(WIFI_TAG, "wifi_init_sta finished.");
/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or
* connection failed for the maximum number of re-tries (WIFI_FAIL_BIT). The
* bits are set by event_handler() (see above) */
EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
pdFALSE, pdFALSE, portMAX_DELAY);
/* xEventGroupWaitBits() returns the bits before the call returned, hence we
* can test which event actually happened. */
if (bits & WIFI_CONNECTED_BIT) {
ESP_LOGI(WIFI_TAG, "connected to ap SSID:%s password:%s",
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
} else if (bits & WIFI_FAIL_BIT) {
ESP_LOGI(WIFI_TAG, "Failed to connect to SSID:%s, password:%s",
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
} else {
ESP_LOGE(WIFI_TAG, "UNEXPECTED EVENT");
}
/* The event will not be processed after unregister */
ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
vEventGroupDelete(s_wifi_event_group);
}
void connect_wifi(void) {
// Initialize NVS
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES ||
ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
ESP_LOGI(WIFI_TAG, "ESP_WIFI_MODE_STA");
wifi_init_sta();
}