own wifi module

2024-12-19 18:58:05 +01:00
parent 15b74c91f4
commit 0b9f5e2997
10 changed files with 137 additions and 115 deletions
--- a/main/wifi.c
+++ b/main/wifi.c
@ -0,0 +1,108 @@
+#include <string.h>
+#include "esp_timer.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_wifi.h"
+#include "esp_event.h"
+#include "freertos/event_groups.h"
+#include "esp_log.h"
+#include "esp_netif.h"
+#include <lwip/sockets.h>
+
+#include "wifi.h"
+
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT BIT1
+
+static const char *TAG = "smart-oil-heater-control-system-wifi";
+
+static EventGroupHandle_t s_wifi_event_group;
+static void event_handler(void *arg, esp_event_base_t event_base,
+                          int32_t event_id, void *event_data);
+
+void initWifi(void)
+{
+    s_wifi_event_group = xEventGroupCreate();
+    ESP_ERROR_CHECK(esp_netif_init());
+    ESP_ERROR_CHECK(esp_event_loop_create_default());
+
+    esp_netif_t *my_sta = esp_netif_create_default_wifi_sta();
+    esp_netif_dhcpc_stop(my_sta);
+    esp_netif_ip_info_t ip_info;
+    ip_info.ip.addr = ipaddr_addr(CONFIG_STATIC_IP_ADDR);
+    ip_info.gw.addr = ipaddr_addr(CONFIG_STATIC_GATEWAY_IP_ADDR);
+    ip_info.netmask.addr = ipaddr_addr(CONFIG_STATIC_IP_NETMASK);
+    esp_netif_set_ip_info(my_sta, &ip_info);
+
+    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 = CONFIG_SSID,
+            .password = CONFIG_WIFI_PASSWORD,
+            .threshold.authmode = WIFI_AUTH_WPA2_PSK,
+        },
+    };
+    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_ERROR_CHECK(esp_wifi_set_max_tx_power(78));      // Set max power to 19.5 dBm (78 in units of 0.25 dBm)
+    ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_MIN_MODEM)); // Use power-saving mode
+
+    ESP_LOGI(TAG, "wifi_init_sta finished.");
+
+    EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
+                                           WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
+                                           pdFALSE,
+                                           pdFALSE,
+                                           portMAX_DELAY);
+
+    if (bits & WIFI_CONNECTED_BIT)
+    {
+        ESP_LOGI(TAG, "Connected to ap SSID:%s", CONFIG_SSID);
+    }
+    else if (bits & WIFI_FAIL_BIT)
+    {
+        ESP_LOGI(TAG, "Failed to connect to SSID:%s", CONFIG_SSID);
+    }
+    else
+    {
+        ESP_LOGE(TAG, "Unexpected event");
+    }
+    vEventGroupDelete(s_wifi_event_group);
+}
+
+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)
+    {
+        esp_wifi_connect();
+        ESP_LOGI(TAG, "Retry to connect to the AP");
+    }
+    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));
+        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+    }
+}