BLE advertise example added

Author: lucadentella

26_ble_advertise/Makefile

@@ -0,0 +1,9 @@
+#
+# This is a project Makefile. It is assumed the directory this Makefile resides in is a
+# project subdirectory.
+#
+
+PROJECT_NAME := ble_advertise
+
+include $(IDF_PATH)/make/project.mk
+

26_ble_advertise/main/component.mk

@@ -0,0 +1,94 @@
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+
+#include "nvs_flash.h"
+#include "esp_err.h"
+#include "esp_log.h"
+
+#include "esp_bt.h"
+#include "esp_bt_main.h"
+#include "esp_gap_ble_api.h"
+
+static esp_ble_adv_params_t ble_adv_params = {
+	
+	.adv_int_min = 0x20,
+	.adv_int_max = 0x40,
+	.adv_type = ADV_TYPE_NONCONN_IND,
+	.own_addr_type  = BLE_ADDR_TYPE_PUBLIC,
+	.channel_map = ADV_CHNL_ALL,
+	.adv_filter_policy  = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
+};
+
+static esp_ble_adv_data_t adv_data = {
+	
+	.include_name = true,
+	.flag = ESP_BLE_ADV_FLAG_LIMIT_DISC | ESP_BLE_ADV_FLAG_BREDR_NOT_SPT,
+	.appearance = 384,
+};
+
+// GAP callback
+static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
+{
+    switch (event) {
+		
+		case ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT: 
+				
+			printf("ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT\n");
+			esp_ble_gap_start_advertising(&ble_adv_params);
+			break;		
+		
+		case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
+			
+			printf("ESP_GAP_BLE_ADV_START_COMPLETE_EVT\n");
+			if(param->adv_start_cmpl.status == ESP_BT_STATUS_SUCCESS) {
+				printf("Advertising started\n\n");
+			}
+			else printf("Unable to start advertising process, error code %d\n\n", param->scan_start_cmpl.status);
+			break;
+	
+		default:
+		
+			printf("Event %d unhandled\n\n", event);
+			break;
+	}
+}
+
+
+void app_main() {
+	
+	printf("BT broadcast\n\n");
+	
+	// set components to log only errors
+	esp_log_level_set("*", ESP_LOG_ERROR);
+	
+	// initialize nvs
+	ESP_ERROR_CHECK(nvs_flash_init());
+	printf("- NVS init ok\n");
+	
+	// release memory reserved for classic BT (not used)
+	ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
+	printf("- Memory for classic BT released\n");
+	
+	// initialize the BT controller with the default config
+	esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
+    esp_bt_controller_init(&bt_cfg);
+	printf("- BT controller init ok\n");
+	
+	// enable the BT controller in BLE mode
+    esp_bt_controller_enable(ESP_BT_MODE_BLE);
+	printf("- BT controller enabled in BLE mode\n");
+	
+	// initialize Bluedroid library
+	esp_bluedroid_init();
+    esp_bluedroid_enable();
+	printf("- Bluedroid initialized and enabled\n");
+	
+	// register GAP callback function
+	ESP_ERROR_CHECK(esp_ble_gap_register_callback(esp_gap_cb));
+	printf("- GAP callback registered\n\n");
+	
+	// configure the adv data
+	ESP_ERROR_CHECK(esp_ble_gap_set_device_name("ESP32_BLE"));
+	ESP_ERROR_CHECK(esp_ble_gap_config_adv_data(&adv_data));
+	printf("- ADV data configured\n\n");
+}