--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "nvs_flash.h"
+#include "lwip/err.h"
+#include "lwip/sockets.h"
+#include "lwip/sys.h"
+#include "lwip/netdb.h"
+#include "lwip/dns.h"
+#include "sdkconfig.h"
+
+#include "pins.h"
+#include "sdcardspi.h"
+
+#include "task_wifi.h"
+
+#define WIFI_SSID_SIZE 16
+#define WIFI_PASS_SIZE 32
+
+
+#define EXAMPLE_ESP_MAXIMUM_RETRY 3
+
+#define ESP_WIFI_SAE_MODE WPA3_SAE_PWE_HUNT_AND_PECK
+#define EXAMPLE_H2E_IDENTIFIER ""
+
+#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_WPA2_PSK
+
+
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT BIT1
+
+/* Constants that aren't configurable in menuconfig */
+#define WEB_SERVER "timehttp.bp4k.net"
+#define WEB_PORT "80"
+#define WEB_PATH "/"
+
+static const char *TAG = "task_wifi";
+
+static const char *REQUEST = "GET " WEB_PATH " HTTP/1.0\r\n"
+ "Host: "WEB_SERVER":"WEB_PORT"\r\n"
+ "User-Agent: esp-idf/1.0 esp32\r\n"
+ "\r\n";
+
+static int s_retry_num = 0;
+
+/* FreeRTOS event group to signal when we are connected*/
+static EventGroupHandle_t s_wifi_event_group;
+
+/* local fns */
+int get_wifi_creds(char *username, size_t usz, char *password, size_t psz);
+void wifi_init_sta(char *username, char *password);
+
+
+void task_wifi_time(void *pvParams) {
+ char wifi_ssid[WIFI_SSID_SIZE];
+ char wifi_pass[WIFI_PASS_SIZE];
+
+ /* simply get the SSID and passwd */
+ if (!gt_global_sdsupport) {
+ ESP_EARLY_LOGE(TAG, "Cannot obtain wifi password since no sd support");
+ vTaskDelete(NULL);
+ }
+
+ if (get_wifi_creds(wifi_ssid, WIFI_SSID_SIZE,
+ wifi_pass, WIFI_PASS_SIZE))
+ vTaskDelete(NULL);
+
+ ESP_EARLY_LOGI(TAG, "Wi-Fi SSID: <<%s>>", wifi_ssid);
+ ESP_EARLY_LOGI(TAG, "Wi-Fi Password: <<%s>>", wifi_pass);
+
+
+ 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);
+
+ if (CONFIG_LOG_MAXIMUM_LEVEL > CONFIG_LOG_DEFAULT_LEVEL) {
+ /* If you only want to open more logs in the wifi module, you need to make the max level greater than the default level,
+ * and call esp_log_level_set() before esp_wifi_init() to improve the log level of the wifi module. */
+ //esp_log_level_set("wifi", CONFIG_LOG_MAXIMUM_LEVEL);
+ }
+
+ ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
+ wifi_init_sta(wifi_ssid, wifi_pass);
+
+ vTaskDelete(NULL);
+}
+
+
+int get_wifi_creds(char *uname, size_t usz, char *pw, size_t psz) {
+ int nzec = 0;
+ FILE *fp = fopen(SD_PATH("config/wifi.conf"), "rb");
+
+ int i;
+
+ if (!fp) {
+ perror("fopen");
+ ESP_EARLY_LOGE(TAG, "cannot obtain wifi ssid and password");
+ nzec = 1;
+ goto err_no_fclose;
+ }
+
+ i = 0;
+ while (
+ i < usz - 1
+ && fread(&uname[i], sizeof(char), 1, fp)
+ && uname[i] != '\n')
+ ++i;
+
+ if (uname[i] == '\n')
+ uname[i] = '\0';
+ else {
+ ESP_EARLY_LOGE(TAG, "invalid wifi config, endl after ssid missing");
+ nzec = 1;
+ goto err_fclose;
+ }
+
+ i = 0;
+ while (
+ i < psz - 1
+ && fread(&pw[i], sizeof(char), 1, fp)
+ && pw[i] != '\n')
+ ++i;
+
+ if (pw[i] == '\n')
+ pw[i] = '\0';
+ else {
+ ESP_EARLY_LOGW(TAG, "wifi password might be truncated");
+ pw[psz - 1] = '\0';
+ }
+
+
+err_fclose:
+ fclose(fp);
+err_no_fclose:
+ return nzec;
+}
+
+
+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(TAG, "retry to connect to the AP");
+ } else {
+ xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+ }
+ ESP_LOGI(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(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(char *username, char *password) {
+ 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 = username,
+ .password = password,
+ */
+ /* Authmode threshold resets to WPA2 as default if password matches WPA2 standards (password len => 8).
+ * If you want to connect the device to deprecated WEP/WPA networks, Please set the threshold value
+ * to WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK and set the password with length and format matching to
+ * WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK standards.
+ */
+ .threshold.authmode = ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD,
+ .sae_pwe_h2e = ESP_WIFI_SAE_MODE,
+ .sae_h2e_identifier = EXAMPLE_H2E_IDENTIFIER,
+ },
+ };
+ strncpy((char *) wifi_config.sta.ssid, username, 32);
+ strncpy((char *) wifi_config.sta.password, password, 64);
+ 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_EARLY_LOGI(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_EARLY_LOGI(TAG, "connected to ap");
+ } else if (bits & WIFI_FAIL_BIT) {
+ ESP_EARLY_LOGI(TAG, "Failed to connect to SSID");
+ } else {
+ ESP_EARLY_LOGE(TAG, "UNEXPECTED EVENT");
+ }
+}
projects / smartwatch.git / commitdiff