257 lines
11 KiB
C
257 lines
11 KiB
C
#include <stdio.h>
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#include "ble_scan_bsp.h"
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#include "freertos/FreeRTOS.h"
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#include "esp_log.h"
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdio.h>
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#define GATTC_TAG "GATTC_DEMO"
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QueueHandle_t ble_queue;
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#define REMOTE_SERVICE_UUID 0x00FF
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#define REMOTE_NOTIFY_CHAR_UUID 0xFF01
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#define PROFILE_NUM 1
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#define PROFILE_A_APP_ID 0
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#define INVALID_HANDLE 0
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/* Declare static functions */
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static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param);
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static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
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static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
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static esp_ble_scan_params_t ble_scan_params = { //ble scan parameter Settings
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.scan_type = BLE_SCAN_TYPE_ACTIVE,
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.own_addr_type = BLE_ADDR_TYPE_PUBLIC,
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.scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL,
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.scan_interval = 0x50,
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.scan_window = 0x30,
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.scan_duplicate = BLE_SCAN_DUPLICATE_ENABLE //Filter duplicate ads
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};
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struct gattc_profile_inst {
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esp_gattc_cb_t gattc_cb;
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uint16_t gattc_if;
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uint16_t app_id;
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uint16_t conn_id;
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uint16_t service_start_handle;
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uint16_t service_end_handle;
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uint16_t char_handle;
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esp_bd_addr_t remote_bda;
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};
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/* One gatt-based profile one app_id and one gattc_if, this array will store the gattc_if returned by ESP_GATTS_REG_EVT */
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static struct gattc_profile_inst gl_profile_tab[PROFILE_NUM] = {
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[PROFILE_A_APP_ID] = {
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.gattc_cb = gattc_profile_event_handler,
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.gattc_if = ESP_GATT_IF_NONE, /* Didn't get the initial value, so it's ESP GATT IF NONE */
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},
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};
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static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param) // This function is called by the esp gattc cb callback function and has the opportunity to be executed
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{
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//esp_ble_gattc_cb_param_t *p_data = (esp_ble_gattc_cb_param_t *)param;
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switch (event)
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{
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case ESP_GATTC_REG_EVT: //This callback function, executed by the esp gattc cb callback function, passes in the event parameters
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ESP_LOGI(GATTC_TAG, "REG_EVT");
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//esp_err_t scan_ret = esp_ble_gap_set_scan_params(&ble_scan_params); //Set scan parameters
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//if (scan_ret)
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//{
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// ESP_LOGE(GATTC_TAG, "set scan params error, error code = %x", scan_ret);
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//}
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break;
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case ESP_GATTC_CFG_MTU_EVT: //This event is triggered when the GATT client successfully configures the mtu by calling esp ble gattc set mtu()
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if (param->cfg_mtu.status != ESP_GATT_OK)
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{
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ESP_LOGE(GATTC_TAG,"config mtu failed, error status = %x", param->cfg_mtu.status);
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}
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ESP_LOGI(GATTC_TAG, "ESP_GATTC_CFG_MTU_EVT, Status %d, MTU %d, conn_id %d", param->cfg_mtu.status, param->cfg_mtu.mtu, param->cfg_mtu.conn_id);
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break;
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default:
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break;
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}
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}
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static uint8_t value = 0;
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static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
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{
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//uint8_t *adv_name = NULL;
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//uint8_t adv_name_len = 0;
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switch (event)
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{
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case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: //This event is triggered after the esp ble gap set scan params() function is successfully invoked to set scan parameters
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{
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//esp_ble_gap_start_scanning(duration); //Scan time of 30 seconds
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break;
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}
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case ESP_GAP_BLE_SCAN_START_COMPLETE_EVT: //This event is triggered after the esp ble gap start scanning() function is successfully invoked to start scanning
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{
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if (param->scan_start_cmpl.status != ESP_BT_STATUS_SUCCESS) //To check whether the ESP BT is successfully started, the value must equal to ESP BT STATUS SUCCESS
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{
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ESP_LOGE(GATTC_TAG, "scan start failed, error status = %x", param->scan_start_cmpl.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "scan start success");
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break;
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}
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case ESP_GAP_BLE_SCAN_RESULT_EVT: //Enter once every scan, not wait for the scan to finish before entering
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{
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esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param;
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switch (scan_result->scan_rst.search_evt) // Search event type
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{
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case ESP_GAP_SEARCH_INQ_RES_EVT:
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////esp_log_buffer_hex(GATTC_TAG, scan_result->scan_rst.bda, 6); //Bluetooth device address adv data len is the length of the AD data for the scanned device.
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//Purpose: Advertising data is the message that the device sends when it broadcasts. This data typically includes the name of the device, service UUID, manufacturer data, and so on.
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//The length of the AD data is specified by adv data len Scan response data is additional information returned by the device after receiving a request from the scan device. Typically, it contains more information about the device, such as the full device name or other service information.
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//Scenario: When a device (such as a phone or other BLE device) scans an AD pack, it can send a scan request to request more information. The target device will respond to this request and send a scan of the response data
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////ESP_LOGI(GATTC_TAG, "searched Adv Data Len %d, Scan Response Len %d", scan_result->scan_rst.adv_data_len, scan_result->scan_rst.scan_rsp_len);
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//adv_name = esp_ble_resolve_adv_data(scan_result->scan_rst.ble_adv,ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len); //NULL is returned if the name is not scanned
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if(xQueueSend(ble_queue,scan_result->scan_rst.bda,0) == pdTRUE)
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{
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value++;
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if(value == 20)
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{
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value = 0;
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esp_ble_gap_stop_scanning(); //Stop scanning
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}
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}
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/*if (adv_name != NULL)
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{
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//ESP_LOGI(GATTC_TAG, "adv_name: %s", adv_name);
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//esp_ble_gap_stop_scanning(); //Stop scanning
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//esp_ble_gattc_open(gl_profile_tab[PROFILE_A_APP_ID].gattc_if, scan_result->scan_rst.bda, scan_result->scan_rst.ble_addr_type, true); //Open gattc and start the connection
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}*/
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break;
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case ESP_GAP_SEARCH_INQ_CMPL_EVT: //The event is used to notify the scanning time of the BLE device when the scanning operation is completed
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value = 0;
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break;
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default:
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break;
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}
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break;
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}
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case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT: //Usually triggered after you call esp ble gap stop scanning() function to stop scanning
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if (param->scan_stop_cmpl.status != ESP_BT_STATUS_SUCCESS)
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{
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ESP_LOGE(GATTC_TAG, "scan stop failed, error status = %x", param->scan_stop_cmpl.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "stop scan successfully");
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break;
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default:
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break;
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}
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}
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static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param)
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{
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/* If event is register event, store the gattc_if for each profile */
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if (event == ESP_GATTC_REG_EVT) // Description The event occurred when the GATT client was registered
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{
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if (param->reg.status == ESP_GATT_OK) // Get running status
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{
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gl_profile_tab[param->reg.app_id].gattc_if = gattc_if; // param->reg.app id Get the ID, which is the gattc if generated automatically by the system
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printf("gattc_if:%d\n",gattc_if);
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}
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else
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{
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ESP_LOGI(GATTC_TAG, "reg app failed, app_id %04x, status %d",param->reg.app_id,param->reg.status); // Otherwise, the corresponding error structure is displayed
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return; //Returns, does not execute the following
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}
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}
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do
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{
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int idx;
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for (idx = 0; idx < PROFILE_NUM; idx++)
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{
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if (gattc_if == ESP_GATT_IF_NONE || gattc_if == gl_profile_tab[idx].gattc_if) //if the callback reports gattc if/gatts if as an ESP GATT IF NONE macro, this event does not correspond to any application
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{
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if (gl_profile_tab[idx].gattc_cb)
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{
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gl_profile_tab[idx].gattc_cb(event, gattc_if, param); //Call the callback function
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}
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}
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}
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} while (0);
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}
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static void ble_scan_resources_init(void)
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{
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ble_queue = xQueueCreate( 60 , sizeof(uint8_t) * 6);
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}
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void ble_scan_prepare(void)
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{
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ble_scan_resources_init();
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ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
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}
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void ble_stack_init(void)
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{
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esp_err_t ret;
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//ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
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esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
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ret = esp_bt_controller_init(&bt_cfg);
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if (ret)
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{
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ESP_LOGE(GATTC_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);
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if (ret)
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{
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ESP_LOGE(GATTC_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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ret = esp_bluedroid_init();
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if (ret)
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{
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ESP_LOGE(GATTC_TAG, "%s init bluetooth failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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ret = esp_bluedroid_enable();
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if (ret)
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{
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ESP_LOGE(GATTC_TAG, "%s enable bluetooth failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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ret = esp_ble_gap_register_callback(esp_gap_cb);
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if (ret)
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{
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ESP_LOGE(GATTC_TAG, "%s gap register failed, error code = %x\n", __func__, ret);
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return;
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}
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ret = esp_ble_gattc_register_callback(esp_gattc_cb);
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if(ret)
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{
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ESP_LOGE(GATTC_TAG, "%s gattc register failed, error code = %x\n", __func__, ret);
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return;
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}
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ret = esp_ble_gattc_app_register(PROFILE_A_APP_ID);
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if (ret)
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{
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ESP_LOGE(GATTC_TAG, "%s gattc app register failed, error code = %x\n", __func__, ret);
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}
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esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(500);
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if (local_mtu_ret)
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{
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ESP_LOGE(GATTC_TAG, "set local MTU failed, error code = %x", local_mtu_ret);
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}
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}
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void ble_scan_start(void)
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{
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esp_ble_gap_set_scan_params(&ble_scan_params);//set scan
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esp_ble_gap_start_scanning(3); //Scan time of 3 seconds
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}
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void ble_stack_deinit(void)
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{
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if(value != 0)esp_ble_gap_stop_scanning();
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esp_ble_gattc_app_unregister(gl_profile_tab[0].gattc_if);
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esp_bluedroid_disable();
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esp_bluedroid_deinit();
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esp_bt_controller_disable();
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esp_bt_controller_deinit();
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} |