lab5

part7_wifi/lab1-1_wifi_connection/main/CMakeLists.txt

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+idf_component_register(
+            SRC_DIRS "." 
+            INCLUDE_DIRS ".")

part7_wifi/lab1-1_wifi_connection/main/Kconfig.projbuild

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+menu "WIFI CONNECT"
+
+config WIFI_SSID
+    string "SSID"
+    default "raspi-box-esp32"
+
+config WIFI_PASSWORD
+    string "PASSWORD"
+    default "PolytechBoxRasp"  
+
+endmenu

part7_wifi/lab1-1_wifi_connection/main/component.mk

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+COMPONENT_SRCDIRS := .
+COMPONENT_ADD_INCLUDEDIRS := .

part7_wifi/lab1-1_wifi_connection/main/main.c

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+/****************************************************************************
+ * Copyright (C) 2021 by Fabrice Muller                                     *
+ *                                                                          *
+ * This file is useful for ESP32 Design course.                             *
+ *                                                                          *
+ ****************************************************************************/
+
+/**
+ * @file main.c
+ * @author Fabrice Muller
+ * @date 12 Nov. 2021
+ * @brief File containing the lab1-1 of Part 7.
+ *
+ * @see https://github.com/fmuller-pns/esp32-vscode-project-template
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_wifi.h"
+#include "esp_log.h"
+#include "nvs_flash.h"
+#include "esp_netif.h"
+
+#include "wifi_connect.h"
+
+static const char *TAG = "WIFI_LAB";
+void ConnectedWifiTask (void *para);
+
+/**
+ * @brief Starting point function
+ * 
+ */
+
+void app_main() {
+  /* ERROR, WARNING, INFO level log */
+  esp_log_level_set(TAG, ESP_LOG_INFO);
+  
+  /* Init WiFi */
+wifiInit();
+  /* Create connected WiFi Task, STACK=3*1024, Priority=5 */
+
+xTaskCreate(&ConnectedWifiTask, "WifiTask",3*1024, NULL, 5, NULL);	
+
+
+  /* Delete task */
+  vTaskDelete(NULL);
+}
+
+
+void ConnectedWifiTask (void *para){
+	xSemaphoreHandle connectionWifiSem = getConnectionWifiSemaphore();
+	for(;;){
+	
+	if (xSemaphoreTake(connectionWifiSem, pdMS_TO_TICKS(10000))){
+		ESP_LOGI(TAG,"Connected on %s", WIFI_SSID);
+		printf("Run Application\n");
+
+		xSemaphoreTake(connectionWifiSem,portMAX_DELAY);
+		ESP_LOGI(TAG,"Retried connexion on %s", WIFI_SSID);
+	}
+	else{
+		ESP_LOGE(TAG,"Failed to reconnect.Retry in");
+		for (int i=0; i<5;i++){
+			ESP_LOGE(TAG,"... %d",i);
+			vTaskDelay(pdMS_TO_TICKS(1000));
+
+		}
+
+	}
+	esp_restart();
+	}
+
+
+
+}
+
+

part7_wifi/lab1-1_wifi_connection/main/wifi_connect.c

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+/****************************************************************************
+ * Copyright (C) 2021 by Fabrice Muller                                     *
+ *                                                                          *
+ * This file is useful for ESP32 Design course.                             *
+ *                                                                          *
+ ****************************************************************************/
+
+/**
+ * @file wifi_connect.c
+ * @author Fabrice Muller
+ * @date 12 Nov. 2021
+ * @brief File containing the lab1-1 of Part 7.
+ *
+ * @see https://github.com/fmuller-pns/esp32-vscode-project-template
+ */
+
+#include "wifi_connect.h"
+
+static const char *TAG = "WIFI_LAB";
+
+/* Local communication */
+static xSemaphoreHandle connectionWifiSemaphore;
+
+/**
+ * @brief Get the Connected Wifi Semaphore
+ * 
+ * @return xSemaphoreHandle connected semaphore
+ */
+xSemaphoreHandle getConnectionWifiSemaphore() {
+    return connectionWifiSemaphore;
+}
+
+static void wifi_event_handler_cb(void* event_handler_arg, esp_event_base_t event_base, int32_t event_id, void* event_data) {
+  switch (event_id) {
+  case SYSTEM_EVENT_STA_START:
+    /* Connect the ESP32 WiFi station to the Access Point (AP) Box */
+    esp_wifi_connect(); 
+    ESP_LOGI(TAG,"connecting...\n");
+    break; 
+
+  case SYSTEM_EVENT_STA_CONNECTED:
+    ESP_LOGI(TAG, "Connected on %s\n", WIFI_SSID);
+    break;
+
+  case IP_EVENT_STA_GOT_IP:
+    ESP_LOGI(TAG,"got ip\n");
+    /* Connection with IP is established */
+    xSemaphoreGive(connectionWifiSemaphore);
+    break;
+
+  case SYSTEM_EVENT_STA_DISCONNECTED:
+    ESP_LOGI(TAG,"disconnected\n");
+    break;
+
+  default:
+    break;
+  }
+}
+
+
+/**
+ * @brief Init the WiFi
+ * 
+ */
+
+void wifiInit() {
+
+  /* Initialize the default NVS (Non-Volatile Storage) partition */
+  ESP_ERROR_CHECK(nvs_flash_init());
+
+  /* Print MAC Address */
+  uint8_t macAddr[6];
+  esp_efuse_mac_get_default(macAddr);
+  printf("MAC Address : %02x-%02x-%02x-%02x-%02x-%02x\n", macAddr[0], macAddr[1], macAddr[2], macAddr[3], macAddr[4], macAddr[5]);
+
+  /* Create semaphore when the WiFi is connected */
+  connectionWifiSemaphore = xSemaphoreCreateBinary();
+
+  /* Initialize the underlying TCP/IP stack */
+  ESP_ERROR_CHECK(esp_netif_init());
+
+  /* Create default event loop */
+  ESP_ERROR_CHECK(esp_event_loop_create_default());
+
+  /* User init default station (STATION mode) */
+  esp_netif_create_default_wifi_sta();
+
+  /* Init WiFi config with default parameters  */
+  wifi_init_config_t wifi_init_config = WIFI_INIT_CONFIG_DEFAULT();
+  ESP_ERROR_CHECK(esp_wifi_init(&wifi_init_config));
+
+  /* Register handler for events */
+  ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT,ESP_EVENT_ANY_ID,wifi_event_handler_cb,NULL));
+  ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT,IP_EVENT_STA_GOT_IP,wifi_event_handler_cb,NULL));
+
+  /* Store configuration in RAM (FLASH or RAM is possible) */
+  ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
+
+  /* Init the SSID and PASSWORD */
+  wifi_config_t wifi_config =
+      {
+      .sta = {
+          .ssid = WIFI_SSID,
+          .password = WIFI_PASSWORD,
+	        .threshold.authmode = WIFI_AUTH_WPA2_PSK,
+          .pmf_cfg = {
+            .capable = true,
+            .required = false
+            },     
+          }};
+  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+  esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config);
+
+  /* Start Wi-Fi */
+  ESP_ERROR_CHECK(esp_wifi_start());
+}
+
+

part7_wifi/lab1-1_wifi_connection/main/wifi_connect.h

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+/****************************************************************************
+ * Copyright (C) 2021 by Fabrice Muller                                     *
+ *                                                                          *
+ * This file is useful for ESP32 Design course.                             *
+ *                                                                          *
+ ****************************************************************************/
+
+/**
+ * @file wifi_connect.h
+ * @author Fabrice Muller
+ * @date 12 Nov. 2021
+ * @brief File containing the lab1-1 of Part 7.
+ *
+ * @see https://github.com/fmuller-pns/esp32-vscode-project-template
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_wifi.h"
+#include "esp_log.h"
+#include "nvs_flash.h"
+#include "esp_netif.h"
+
+/* WIFI HOT SPOT (Access Point BOX) */
+#define WIFI_SSID (CONFIG_WIFI_SSID)
+#define WIFI_PASSWORD (CONFIG_WIFI_PASSWORD)
+
+
+void wifiInit();
+xSemaphoreHandle getConnectionWifiSemaphore();
+