\n| \u5e94\u7528\u5c42<\/td>\n | \u7528\u6237\u5e94\u7528\u7a0b\u5e8f<\/td>\n | \u4e1a\u52a1\u903b\u8f91\u3001\u670d\u52a1\u5b9a\u4e49\u3001\u6570\u636e\u5904\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u8fd9\u79cd\u5206\u5c42\u67b6\u6784\u610f\u5473\u7740，\u5f53\u51fa\u73b0\u901a\u4fe1\u95ee\u9898\u65f6，\u6211\u4eec\u9700\u8981\u5148\u5b9a\u4f4d\u95ee\u9898\u53d1\u751f\u5728\u54ea\u4e00\u5c42\u3002\u6bd4\u5982，\u5982\u679c\u8bbe\u5907\u65e0\u6cd5\u88ab\u626b\u63cf\u5230，\u53ef\u80fd\u662fGAP\u5c42\u914d\u7f6e\u95ee\u9898；\u5982\u679c\u80fd\u8fde\u63a5\u4f46\u65e0\u6cd5\u8bfb\u5199\u6570\u636e，\u5219\u53ef\u80fd\u662fGATT\u670d\u52a1\u5b9a\u4e49\u6709\u95ee\u9898\u3002<\/p>\n 2. \u84dd\u7259\u534f\u8bae\u6808\u521d\u59cb\u5316\u4e0e\u8d44\u6e90\u7ba1\u7406<\/h3>\n\u84dd\u7259\u534f\u8bae\u6808\u7684\u521d\u59cb\u5316\u770b\u4f3c\u7b80\u5355，\u4f46\u914d\u7f6e\u4e0d\u5f53\u4f1a\u5bfc\u81f4\u5404\u79cd\u5947\u602a\u7684\u95ee\u9898，\u6bd4\u5982\u5185\u5b58\u6cc4\u6f0f\u3001\u8fde\u63a5\u4e0d\u7a33\u5b9a\u3001\u529f\u8017\u5f02\u5e38\u7b49\u3002\u4e0b\u9762\u662f\u6211\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u603b\u7ed3\u51fa\u7684\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n \u9996\u5148\u5728main.c\u4e2d\u5305\u542b\u5fc5\u8981\u7684\u5934\u6587\u4ef6：<\/p>\n #include "esp_bt.h"
\n#include "esp_bt_main.h"
\n#include "esp_gap_ble_api.h"
\n#include "esp_gatts_api.h"
\n#include "esp_bt_device.h"
\n#include "esp_log.h"<\/p>\n \u5b9a\u4e49\u65e5\u5fd7\u6807\u7b7e，\u65b9\u4fbf\u8c03\u8bd5：<\/p>\n static const char *TAG = "BLE_SERVER";<\/p>\n \u521d\u59cb\u5316\u51fd\u6570\u5e94\u8be5\u6309\u7279\u5b9a\u987a\u5e8f\u8c03\u7528，\u8fd9\u4e2a\u987a\u5e8f\u5f88\u91cd\u8981：<\/p>\n esp_err_t ble_init(void)
\n{
\n \/\/ 1. \u521d\u59cb\u5316NVS（\u975e\u6613\u5931\u6027\u5b58\u50a8）
\n esp_err_t ret = nvs_flash_init();
\n if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
\n ESP_ERROR_CHECK(nvs_flash_erase());
\n ret = nvs_flash_init();
\n }
\n ESP_ERROR_CHECK(ret);<\/p>\n \/\/ 2. \u521d\u59cb\u5316\u84dd\u7259\u63a7\u5236\u5668\u914d\u7f6e
\n esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();<\/p>\n \/\/ \u8c03\u6574\u5173\u952e\u53c2\u6570（\u6839\u636e\u5b9e\u9645\u9700\u6c42）
\n bt_cfg.mode = ESP_BT_MODE_BLE; \/\/ \u4ec5BLE\u6a21\u5f0f
\n bt_cfg.ble_max_conn = 3; \/\/ \u6700\u5927\u8fde\u63a5\u6570
\n bt_cfg.ble_max_conn_params = 3; \/\/ \u8fde\u63a5\u53c2\u6570\u66f4\u65b0\u6b21\u6570
\n bt_cfg.bt_max_acl_conn = 3; \/\/ ACL\u8fde\u63a5\u6570
\n bt_cfg.bt_max_sync_conn = 3; \/\/ \u540c\u6b65\u8fde\u63a5\u6570<\/p>\n \/\/ 3. \u521d\u59cb\u5316\u84dd\u7259\u63a7\u5236\u5668
\n ret = esp_bt_controller_init(&bt_cfg);
\n if (ret != ESP_OK) {
\n ESP_LOGE(TAG, "\u63a7\u5236\u5668\u521d\u59cb\u5316\u5931\u8d25: %s", esp_err_to_name(ret));
\n return ret;
\n }<\/p>\n \/\/ 4. \u4f7f\u80fd\u84dd\u7259\u63a7\u5236\u5668
\n ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);
\n if (ret != ESP_OK) {
\n ESP_LOGE(TAG, "\u63a7\u5236\u5668\u4f7f\u80fd\u5931\u8d25: %s", esp_err_to_name(ret));
\n return ret;
\n }<\/p>\n \/\/ 5. \u521d\u59cb\u5316Bluedroid\u534f\u8bae\u6808
\n ret = esp_bluedroid_init();
\n if (ret != ESP_OK) {
\n ESP_LOGE(TAG, "Bluedroid\u521d\u59cb\u5316\u5931\u8d25: %s", esp_err_to_name(ret));
\n return ret;
\n }<\/p>\n \/\/ 6. \u4f7f\u80fdBluedroid\u534f\u8bae\u6808
\n ret = esp_bluedroid_enable();
\n if (ret != ESP_OK) {
\n ESP_LOGE(TAG, "Bluedroid\u4f7f\u80fd\u5931\u8d25: %s", esp_err_to_name(ret));
\n return ret;
\n }<\/p>\n ESP_LOGI(TAG, "\u84dd\u7259\u534f\u8bae\u6808\u521d\u59cb\u5316\u5b8c\u6210");
\n return ESP_OK;
\n}<\/p>\n \u63d0\u793a：\u5728\u751f\u4ea7\u73af\u5883\u4e2d，\u5efa\u8bae\u4e3a\u6bcf\u4e2a\u9519\u8bef\u68c0\u67e5\u6dfb\u52a0\u66f4\u8be6\u7ec6\u7684\u65e5\u5fd7，\u5e76\u8003\u8651\u9519\u8bef\u6062\u590d\u673a\u5236\u3002\u6bd4\u5982\u63a7\u5236\u5668\u521d\u59cb\u5316\u5931\u8d25\u540e，\u53ef\u4ee5\u5c1d\u8bd5\u5ef6\u8fdf\u91cd\u8bd5\u3002<\/p>\n \u5185\u5b58\u7ba1\u7406\u662f\u84dd\u7259\u5f00\u53d1\u4e2d\u7684\u53e6\u4e00\u4e2a\u5173\u952e\u70b9\u3002ESP32\u7684\u5185\u5b58\u5728\u8fd0\u884c\u84dd\u7259\u534f\u8bae\u6808\u65f6\u76f8\u5bf9\u7d27\u5f20，\u7279\u522b\u662f\u5f53\u540c\u65f6\u8fd0\u884cWi-Fi\u548c\u5176\u4ed6\u529f\u80fd\u65f6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5185\u5b58\u4f18\u5316\u6280\u5de7：<\/p>\n \n- \u9759\u6001\u5206\u914d\u4f18\u5148：\u5c3d\u53ef\u80fd\u4f7f\u7528\u9759\u6001\u6570\u7ec4\u800c\u975e\u52a8\u6001\u5206\u914d<\/li>\n
- \u5408\u7406\u8bbe\u7f6eMTU\u5927\u5c0f：\u9ed8\u8ba4MTU\u4e3a23\u5b57\u8282，\u4f46\u53ef\u4ee5\u901a\u8fc7\u534f\u5546\u589e\u52a0\u5230247\u5b57\u8282，\u51cf\u5c11\u5206\u5305\u6b21\u6570<\/li>\n
- \u63a7\u5236\u8fde\u63a5\u6570：\u6bcf\u4e2a\u8fde\u63a5\u90fd\u4f1a\u5360\u7528\u5185\u5b58，\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8bbe\u7f6eble_max_conn<\/li>\n<\/ul>\n
\u521d\u59cb\u5316\u5b8c\u6210\u540e，\u9700\u8981\u6ce8\u518cGAP\u548cGATT\u56de\u8c03\u51fd\u6570\u3002\u8fd9\u91cc\u6709\u4e2a\u5e38\u89c1\u8bef\u533a：\u5f88\u591a\u4eba\u628a\u8fd9\u4e24\u4e2a\u56de\u8c03\u6ce8\u518c\u653e\u5728\u540c\u4e00\u4e2a\u51fd\u6570\u91cc，\u4f46\u5b9e\u9645\u4e0a\u5b83\u4eec\u5e94\u8be5\u5206\u5f00\u7ba1\u7406，\u56e0\u4e3aGAP\u4e8b\u4ef6\u901a\u5e38\u4e0e\u8bbe\u5907\u53d1\u73b0\u548c\u8fde\u63a5\u7ba1\u7406\u76f8\u5173，\u800cGATT\u4e8b\u4ef6\u5219\u4e13\u6ce8\u4e8e\u6570\u636e\u4ea4\u6362\u3002<\/p>\n \/\/ \u6ce8\u518cGAP\u4e8b\u4ef6\u56de\u8c03
\nesp_ble_gap_register_callback(gap_event_handler);<\/p>\n \/\/ \u6ce8\u518cGATT\u4e8b\u4ef6\u56de\u8c03
\nesp_ble_gatts_register_callback(gatts_event_handler);<\/p>\n \u56de\u8c03\u51fd\u6570\u7684\u5b9e\u73b0\u6211\u4eec\u4f1a\u5728\u4e0b\u4e00\u8282\u8be6\u7ec6\u8ba8\u8bba\u3002\u73b0\u5728，\u5148\u786e\u4fdd\u521d\u59cb\u5316\u6d41\u7a0b\u80fd\u591f\u6b63\u786e\u6267\u884c\u3002\u4f60\u53ef\u4ee5\u5728app_main\u51fd\u6570\u4e2d\u8c03\u7528ble_init()，\u7136\u540e\u6dfb\u52a0\u4e00\u4e2a\u7b80\u5355\u7684\u65e5\u5fd7\u8f93\u51fa，\u9a8c\u8bc1\u521d\u59cb\u5316\u662f\u5426\u6210\u529f\u3002<\/p>\n 3. GAP\u5c42\u914d\u7f6e\u4e0e\u5e7f\u64ad\u7b56\u7565\u4f18\u5316<\/h3>\nGAP（Generic Access Profile）\u5c42\u8d1f\u8d23\u8bbe\u5907\u53d1\u73b0\u3001\u8fde\u63a5\u5efa\u7acb\u548c\u5b89\u5168\u63a7\u5236\u3002\u5f88\u591a\u5f00\u53d1\u8005\u53ea\u5173\u6ce8GATT\u670d\u52a1，\u5374\u5ffd\u7565\u4e86GAP\u914d\u7f6e\u7684\u91cd\u8981\u6027，\u7ed3\u679c\u5bfc\u81f4\u8bbe\u5907\u96be\u4ee5\u88ab\u53d1\u73b0\u3001\u8fde\u63a5\u4e0d\u7a33\u5b9a\u6216\u529f\u8017\u8fc7\u9ad8\u3002<\/p>\n 3.1 \u5e7f\u64ad\u6570\u636e\u914d\u7f6e<\/h4>\n\u5e7f\u64ad\u6570\u636e\u51b3\u5b9a\u4e86\u5916\u56f4\u8bbe\u5907\u5982\u4f55\u88ab\u4e2d\u5fc3\u8bbe\u5907（\u5982\u624b\u673a）\u53d1\u73b0\u548c\u8bc6\u522b\u3002ESP-IDF\u63d0\u4f9b\u4e86\u4e24\u79cd\u914d\u7f6e\u65b9\u5f0f：\u6807\u51c6\u6570\u636e\u7ed3\u6784\u548c\u539f\u59cb\u6570\u636e\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u5e94\u7528，\u6211\u63a8\u8350\u4f7f\u7528\u539f\u59cb\u6570\u636e\u65b9\u5f0f，\u56e0\u4e3a\u5b83\u66f4\u7075\u6d3b\u3002<\/p>\n \u9996\u5148\u5b9a\u4e49\u5e7f\u64ad\u6570\u636e：<\/p>\n \/\/ \u5e7f\u64ad\u6570\u636e（31\u5b57\u8282\u9650\u5236）
\nstatic uint8_t raw_adv_data[] = {
\n \/\/ \u6807\u5fd7\u4f4d
\n 0x02, 0x01, 0x06,
\n \/\/ \u5b8c\u6574\u8bbe\u5907\u540d
\n 0x0d, 0x09, 'E', 'S', 'P', '3', '2', '_', 'G', 'A', 'T', 'T', '_', 'S', 'V', 'R',
\n \/\/ 128\u4f4d\u670d\u52a1UUID
\n 0x11, 0x07,
\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
\n};<\/p>\n \/\/ \u626b\u63cf\u54cd\u5e94\u6570\u636e
\nstatic uint8_t raw_scan_rsp_data[] = {
\n \/\/ \u5236\u9020\u5546\u7279\u5b9a\u6570\u636e
\n 0x05, 0xff, 0x4c, 0x00, 0x02, 0x15,
\n \/\/ \u53d1\u5c04\u529f\u7387
\n 0x02, 0x0a, 0xeb
\n};<\/p>\n \u5e7f\u64ad\u6570\u636e\u683c\u5f0f\u89e3\u6790：<\/p>\n \n- \u7b2c1-3\u5b57\u8282：0x02, 0x01, 0x06 \u8868\u793a"\u6807\u5fd7"\u6570\u636e\u7c7b\u578b，\u957f\u5ea62，\u5185\u5bb90x06（LE\u901a\u7528\u53d1\u73b0\u6a21\u5f0f+\u4e0d\u652f\u6301\u4f20\u7edf\u84dd\u7259）<\/li>\n
- \u7b2c4-19\u5b57\u8282：\u8bbe\u5907\u540d\u79f0，0x0d\u8868\u793a\u540e\u9762\u670913\u4e2a\u5b57\u8282\u6570\u636e，0x09\u8868\u793a"\u5b8c\u6574\u8bbe\u5907\u540d"\u7c7b\u578b<\/li>\n
- \u7b2c20-36\u5b57\u8282：\u670d\u52a1UUID，0x11\u8868\u793a\u540e\u9762\u670917\u4e2a\u5b57\u8282，0x07\u8868\u793a"128\u4f4d\u670d\u52a1UUID"\u7c7b\u578b<\/li>\n<\/ul>\n
\u6ce8\u610f：\u5e7f\u64ad\u6570\u636e\u603b\u957f\u5ea6\u4e0d\u80fd\u8d85\u8fc731\u5b57\u8282，\u8fd9\u662fBLE\u534f\u8bae\u7684\u9650\u5236\u3002\u5982\u679c\u6570\u636e\u8fc7\u591a，\u9700\u8981\u5408\u7406\u53d6\u820d\u6216\u4f7f\u7528\u626b\u63cf\u54cd\u5e94\u6570\u636e\u8865\u5145\u3002<\/p>\n \u914d\u7f6e\u5e7f\u64ad\u53c2\u6570\u65f6，\u6709\u51e0\u4e2a\u5173\u952e\u8bbe\u7f6e\u4f1a\u5f71\u54cd\u8bbe\u5907\u884c\u4e3a：<\/p>\n static esp_ble_adv_params_t adv_params = {
\n .adv_int_min = 0x20, \/\/ \u6700\u5c0f\u5e7f\u64ad\u95f4\u9694：32*0.625ms = 20ms
\n .adv_int_max = 0x40, \/\/ \u6700\u5927\u5e7f\u64ad\u95f4\u9694：64*0.625ms = 40ms
\n .adv_type = ADV_TYPE_IND, \/\/ \u53ef\u8fde\u63a5\u7684\u975e\u5b9a\u5411\u5e7f\u64ad
\n .own_addr_type = BLE_ADDR_TYPE_PUBLIC,
\n .channel_map = ADV_CHNL_ALL,
\n .adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
\n};<\/p>\n \u5e7f\u64ad\u95f4\u9694\u7684\u9009\u62e9\u9700\u8981\u5728\u529f\u8017\u548c\u54cd\u5e94\u901f\u5ea6\u4e4b\u95f4\u6743\u8861：<\/p>\n \n- \u5feb\u901f\u5e7f\u64ad（20-40ms）：\u8bbe\u5907\u5bb9\u6613\u88ab\u53d1\u73b0，\u4f46\u529f\u8017\u8f83\u9ad8<\/li>\n
- \u6162\u901f\u5e7f\u64ad（1-2s）：\u529f\u8017\u4f4e，\u4f46\u8bbe\u5907\u53d1\u73b0\u5ef6\u8fdf\u5927<\/li>\n<\/ul>\n
\u5728\u5b9e\u9645\u9879\u76ee\u4e2d，\u6211\u901a\u5e38\u91c7\u7528\u53cc\u9636\u6bb5\u5e7f\u64ad\u7b56\u7565：\u8bbe\u5907\u521a\u542f\u52a8\u65f6\u4f7f\u7528\u5feb\u901f\u5e7f\u64ad（20-40ms），\u6301\u7eed30\u79d2；\u5982\u679c\u6ca1\u6709\u8fde\u63a5，\u5207\u6362\u5230\u6162\u901f\u5e7f\u64ad（1-2s）\u3002\u8fd9\u6837\u53ef\u4ee5\u517c\u987e\u5feb\u901f\u8fde\u63a5\u548c\u4f4e\u529f\u8017\u7684\u9700\u6c42\u3002<\/p>\n 3.2 GAP\u4e8b\u4ef6\u5904\u7406<\/h4>\nGAP\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u9700\u8981\u5904\u7406\u591a\u79cd\u4e8b\u4ef6，\u4ee5\u4e0b\u662f\u4e00\u4e2a\u76f8\u5bf9\u5b8c\u6574\u7684\u5b9e\u73b0：<\/p>\n static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
\n{
\n switch (event) {
\n case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:
\n ESP_LOGI(TAG, "\u5e7f\u64ad\u6570\u636e\u8bbe\u7f6e\u5b8c\u6210");
\n adv_config_done &= ~ADV_CONFIG_FLAG;
\n if (adv_config_done == 0) {
\n esp_ble_gap_start_advertising(&adv_params);
\n }
\n break;<\/p>\n case ESP_GAP_BLE_SCAN_RSP_DATA_RAW_SET_COMPLETE_EVT:
\n ESP_LOGI(TAG, "\u626b\u63cf\u54cd\u5e94\u6570\u636e\u8bbe\u7f6e\u5b8c\u6210");
\n adv_config_done &= ~SCAN_RSP_CONFIG_FLAG;
\n if (adv_config_done == 0) {
\n esp_ble_gap_start_advertising(&adv_params);
\n }
\n break;<\/p>\n case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
\n if (param->adv_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
\n ESP_LOGE(TAG, "\u5e7f\u64ad\u542f\u52a8\u5931\u8d25");
\n \/\/ \u8fd9\u91cc\u53ef\u4ee5\u6dfb\u52a0\u91cd\u8bd5\u903b\u8f91
\n vTaskDelay(pdMS_TO_TICKS(1000));
\n esp_ble_gap_start_advertising(&adv_params);
\n } else {
\n ESP_LOGI(TAG, "\u5e7f\u64ad\u5df2\u542f\u52a8");
\n }
\n break;<\/p>\n case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT:
\n ESP_LOGI(TAG, "\u5e7f\u64ad\u5df2\u505c\u6b62");
\n break;<\/p>\n case ESP_GAP_BLE_UPDATE_CONN_PARAMS_EVT:
\n ESP_LOGI(TAG, "\u8fde\u63a5\u53c2\u6570\u66f4\u65b0: interval=%d, latency=%d, timeout=%d",
\n param->update_conn_params.conn_int,
\n param->update_conn_params.latency,
\n param->update_conn_params.timeout);
\n break;<\/p>\n case ESP_GAP_BLE_SEC_REQ_EVT:
\n \/\/ \u5b89\u5168\u8bf7\u6c42\u5904\u7406
\n esp_ble_gap_security_rsp(param->ble_security.ble_req.bd_addr, true);
\n break;<\/p>\n default:
\n ESP_LOGD(TAG, "\u672a\u5904\u7406\u7684GAP\u4e8b\u4ef6: %d", event);
\n break;
\n }
\n}<\/p>\n \u8fde\u63a5\u53c2\u6570\u7ba1\u7406\u662f\u4fdd\u8bc1\u901a\u4fe1\u7a33\u5b9a\u6027\u7684\u5173\u952e\u3002\u5f53\u8bbe\u5907\u8fde\u63a5\u540e，\u5e94\u8be5\u6839\u636e\u5e94\u7528\u9700\u6c42\u66f4\u65b0\u8fde\u63a5\u53c2\u6570：<\/p>\n static void update_connection_params(esp_bd_addr_t bd_addr)
\n{
\n esp_ble_conn_update_params_t conn_params = {
\n .bda = bd_addr,
\n .min_int = 0x10, \/\/ 20ms
\n .max_int = 0x20, \/\/ 40ms
\n .latency = 0,
\n .timeout = 400, \/\/ 4000ms
\n };<\/p>\n esp_ble_gap_update_conn_params(&conn_params);
\n}<\/p>\n \u5bf9\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f，\u8fde\u63a5\u53c2\u6570\u5e94\u8be5\u6709\u6240\u8c03\u6574：<\/p>\n \n- \u5b9e\u65f6\u6570\u636e\u4f20\u8f93（\u5982\u4f20\u611f\u5668\u6d41）：\u4f7f\u7528\u8f83\u77ed\u7684\u8fde\u63a5\u95f4\u9694（20-40ms），\u4f4e\u5ef6\u8fdf<\/li>\n
- \u95f4\u6b47\u6027\u6570\u636e\u4f20\u8f93（\u5982\u6e29\u5ea6\u4e0a\u62a5）：\u4f7f\u7528\u8f83\u957f\u7684\u8fde\u63a5\u95f4\u9694（100-200ms），\u964d\u4f4e\u529f\u8017<\/li>\n
- \u7535\u6c60\u4f9b\u7535\u8bbe\u5907：\u5c3d\u53ef\u80fd\u4f7f\u7528\u957f\u8fde\u63a5\u95f4\u9694，\u5e76\u5141\u8bb8\u4e00\u5b9a\u7684\u5ef6\u8fdf<\/li>\n<\/ul>\n
4. GATT\u670d\u52a1\u67b6\u6784\u8bbe\u8ba1\u4e0e\u5b9e\u73b0<\/h3>\nGATT（Generic Attribute Profile）\u662fBLE\u6570\u636e\u4ea4\u6362\u7684\u6838\u5fc3\u3002\u8bbe\u8ba1\u826f\u597d\u7684GATT\u670d\u52a1\u67b6\u6784\u4e0d\u4ec5\u80fd\u63d0\u9ad8\u5f00\u53d1\u6548\u7387，\u8fd8\u80fd\u786e\u4fdd\u7cfb\u7edf\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u6269\u5c55\u6027\u3002<\/p>\n 4.1 \u670d\u52a1\u8868\u5b9a\u4e49<\/h4>\nGATT\u670d\u52a1\u901a\u8fc7\u5c5e\u6027\u8868（Attribute Table）\u5b9a\u4e49\u3002\u6bcf\u4e2a\u670d\u52a1\u5305\u542b\u591a\u4e2a\u7279\u5f81（Characteristic），\u6bcf\u4e2a\u7279\u5f81\u53c8\u5305\u542b\u503c\u3001\u63cf\u8ff0\u7b26\u7b49\u5c5e\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u73af\u5883\u76d1\u6d4b\u670d\u52a1\u793a\u4f8b：<\/p>\n #define GATT_DB_NUM 7 \/\/ \u5c5e\u6027\u603b\u6570<\/p>\n \/\/ \u81ea\u5b9a\u4e49UUID（128\u4f4d）
\nstatic const uint8_t SERVICE_UUID_ENV[16] = {
\n 0x00, 0x00, 0x00, 0x00, 0x12, 0x34, 0x56, 0x78,
\n 0x9a, 0xbc, 0xde, 0xf0, 0x00, 0x00, 0x00, 0x01
\n};<\/p>\n static const uint8_t CHAR_UUID_TEMP[16] = {
\n 0x00, 0x00, 0x00, 0x00, 0x12, 0x34, 0x56, 0x78,
\n 0x9a, 0xbc, 0xde, 0xf0, 0x00, 0x00, 0x00, 0x02
\n};<\/p>\n static const uint8_t CHAR_UUID_HUMID[16] = {
\n 0x00, 0x00, 0x00, 0x00, 0x12, 0x34, 0x56, 0x78,
\n 0x9a, 0xbc, 0xde, 0xf0, 0x00, 0x00, 0x00, 0x03
\n};<\/p>\n \/\/ \u5c5e\u6027\u8868\u5b9a\u4e49
\nstatic const esp_gatts_attr_db_t gatt_db[GATT_DB_NUM] = {
\n \/\/ [0] \u670d\u52a1\u58f0\u660e
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_16, (uint8_t *)&primary_service_uuid,
\n ESP_GATT_PERM_READ,
\n sizeof(SERVICE_UUID_ENV), sizeof(SERVICE_UUID_ENV),
\n (uint8_t *)SERVICE_UUID_ENV}
\n },<\/p>\n \/\/ [1] \u6e29\u5ea6\u7279\u5f81\u58f0\u660e
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid,
\n ESP_GATT_PERM_READ,
\n CHAR_PROP_BIT_READ | CHAR_PROP_BIT_NOTIFY,
\n 0, NULL}
\n },<\/p>\n \/\/ [2] \u6e29\u5ea6\u7279\u5f81\u503c
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_128, (uint8_t *)CHAR_UUID_TEMP,
\n ESP_GATT_PERM_READ,
\n sizeof(float), 0, NULL}
\n },<\/p>\n \/\/ [3] \u6e29\u5ea6CCCD（\u5ba2\u6237\u7aef\u7279\u5f81\u914d\u7f6e\u63cf\u8ff0\u7b26）
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid,
\n ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
\n sizeof(uint16_t), 0, NULL}
\n },<\/p>\n \/\/ [4] \u6e7f\u5ea6\u7279\u5f81\u58f0\u660e
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid,
\n ESP_GATT_PERM_READ,
\n CHAR_PROP_BIT_READ | CHAR_PROP_BIT_WRITE,
\n 0, NULL}
\n },<\/p>\n \/\/ [5] \u6e7f\u5ea6\u7279\u5f81\u503c
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_128, (uint8_t *)CHAR_UUID_HUMID,
\n ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
\n sizeof(float), 0, NULL}
\n },<\/p>\n \/\/ [6] \u6e7f\u5ea6CCCD
\n {
\n {ESP_GATT_AUTO_RSP},
\n {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid,
\n ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
\n sizeof(uint16_t), 0, NULL}
\n }
\n};<\/p>\n \u5c5e\u6027\u8868\u7684\u5173\u952e\u5b57\u6bb5\u8bf4\u660e：<\/p>\n \n- UUID\u957f\u5ea6\u548c\u503c：16\u4f4d\u6807\u51c6UUID\u6216128\u4f4d\u81ea\u5b9a\u4e49UUID<\/li>\n
- \u6743\u9650：ESP_GATT_PERM_READ\u3001ESP_GATT_PERM_WRITE\u7b49<\/li>\n
- \u6700\u5927\u957f\u5ea6：\u7279\u5f81\u503c\u5141\u8bb8\u7684\u6700\u5927\u5b57\u8282\u6570<\/li>\n
- \u521d\u59cb\u503c：\u7279\u5f81\u7684\u521d\u59cb\u6570\u636e，\u5982\u679c\u4e3a0\u6216NULL，\u5219\u9700\u8981\u5728\u521b\u5efa\u65f6\u52a8\u6001\u8bbe\u7f6e<\/li>\n<\/ul>\n
4.2 GATT\u4e8b\u4ef6\u5904\u7406<\/h4>\nGATT\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u662f\u670d\u52a1\u903b\u8f91\u7684\u6838\u5fc3\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u652f\u6301\u591a\u670d\u52a1\u3001\u591a\u8fde\u63a5\u7684\u5904\u7406\u6846\u67b6：<\/p>\n \/\/ \u8fde\u63a5\u4fe1\u606f\u7ed3\u6784
\ntypedef struct {
\n uint16_t conn_id;
\n esp_gatt_if_t gatts_if;
\n uint16_t temp_ccc_value;
\n uint16_t humid_ccc_value;
\n bool connected;
\n} conn_info_t;<\/p>\n static conn_info_t connections[MAX_CONNECTIONS];<\/p>\n static void gatts_event_handler(esp_gatts_cb_event_t event,
\n esp_gatt_if_t gatts_if,
\n esp_ble_gatts_cb_param_t *param)
\n{
\n \/\/ \u67e5\u627e\u6216\u521b\u5efa\u8fde\u63a5\u4fe1\u606f
\n conn_info_t *conn = find_connection(gatts_if, param->connect.conn_id);<\/p>\n switch (event) {
\n case ESP_GATTS_REG_EVT:
\n ESP_LOGI(TAG, "GATT\u5e94\u7528\u6ce8\u518c\u6210\u529f，\u63a5\u53e3ID: %d", gatts_if);<\/p>\n \/\/ \u8bbe\u7f6e\u8bbe\u5907\u540d\u79f0
\n esp_ble_gap_set_device_name("ESP32_ENV_SENSOR");<\/p>\n \/\/ \u914d\u7f6e\u5e7f\u64ad\u6570\u636e
\n esp_ble_gap_config_adv_data_raw(raw_adv_data,
\n sizeof(raw_adv_data));<\/p>\n \/\/ \u521b\u5efa\u5c5e\u6027\u8868
\n esp_ble_gatts_create_attr_tab(gatt_db, gatts_if,
\n GATT_DB_NUM, 0);
\n break;<\/p>\n case ESP_GATTS_CONNECT_EVT: {
\n ESP_LOGI(TAG, "\u8bbe\u5907\u8fde\u63a5，\u8fde\u63a5ID: %d", param->connect.conn_id);<\/p>\n if (conn == NULL) {
\n conn = add_connection(gatts_if, param->connect.conn_id);
\n }<\/p>\n conn->connected = true;
\n conn->conn_id = param->connect.conn_id;
\n conn->gatts_if = gatts_if;<\/p>\n \/\/ \u66f4\u65b0\u8fde\u63a5\u53c2\u6570
\n update_connection_params(param->connect.remote_bda);<\/p>\n \/\/ \u505c\u6b62\u5e7f\u64ad\u4ee5\u8282\u7701\u529f\u8017
\n esp_ble_gap_stop_advertising();
\n break;
\n }<\/p>\n case ESP_GATTS_DISCONNECT_EVT:
\n ESP_LOGI(TAG, "\u8bbe\u5907\u65ad\u5f00\u8fde\u63a5，\u539f\u56e0: 0x%x",
\n param->disconnect.reason);<\/p>\n if (conn != NULL) {
\n conn->connected = false;
\n remove_connection(conn);
\n }<\/p>\n \/\/ \u91cd\u65b0\u5f00\u59cb\u5e7f\u64ad
\n esp_ble_gap_start_advertising(&adv_params);
\n break;<\/p>\n case ESP_GATTS_CREAT_ATTR_TAB_EVT:
\n if (param->add_attr_tab.status == ESP_GATT_OK) {
\n ESP_LOGI(TAG, "\u5c5e\u6027\u8868\u521b\u5efa\u6210\u529f，\u53e5\u67c4\u6570: %d",
\n param->add_attr_tab.num_handle);<\/p>\n \/\/ \u4fdd\u5b58\u53e5\u67c4
\n save_attribute_handles(param->add_attr_tab.handles,
\n param->add_attr_tab.num_handle);<\/p>\n \/\/ \u542f\u52a8\u670d\u52a1
\n esp_ble_gatts_start_service(
\n param->add_attr_tab.handles[0]);
\n }
\n break;<\/p>\n case ESP_GATTS_READ_EVT:
\n handle_read_event(gatts_if, conn, param);
\n break;<\/p>\n case ESP_GATTS_WRITE_EVT:
\n handle_write_event(gatts_if, conn, param);
\n break;<\/p>\n case ESP_GATTS_MTU_EVT:
\n ESP_LOGI(TAG, "MTU\u66f4\u65b0: %d", param->mtu.mtu);
\n break;<\/p>\n default:
\n ESP_LOGD(TAG, "\u672a\u5904\u7406\u7684GATT\u4e8b\u4ef6: %d", event);
\n break;
\n }
\n}<\/p>\n \u8bfb\u5199\u4e8b\u4ef6\u7684\u5177\u4f53\u5904\u7406\u9700\u8981\u6839\u636e\u4e1a\u52a1\u903b\u8f91\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u6e29\u5ea6\u8bfb\u53d6\u7684\u793a\u4f8b：<\/p>\n static void handle_read_event(esp_gatt_if_t gatts_if,
\n conn_info_t *conn,
\n esp_ble_gatts_cb_param_t *param)
\n{
\n uint16_t handle = param->read.handle;
\n esp_gatt_rsp_t rsp;<\/p>\n memset(&rsp, 0, sizeof(esp_gatt_rsp_t));<\/p>\n \/\/ \u6839\u636e\u53e5\u67c4\u5224\u65ad\u8bfb\u53d6\u54ea\u4e2a\u7279\u5f81
\n if (handle == temp_value_handle) {
\n \/\/ \u8bfb\u53d6\u6e29\u5ea6\u503c
\n float current_temp = read_temperature_sensor();
\n memcpy(rsp.attr_value.value, ¤t_temp, sizeof(float));
\n rsp.attr_value.len = sizeof(float);<\/p>\n ESP_LOGI(TAG, "\u6e29\u5ea6\u8bfb\u53d6: %.2f\u00b0C", current_temp);
\n }
\n else if (handle == humid_value_handle) {
\n \/\/ \u8bfb\u53d6\u6e7f\u5ea6\u503c
\n float current_humid = read_humidity_sensor();
\n memcpy(rsp.attr_value.value, ¤t_humid, sizeof(float));
\n rsp.attr_value.len = sizeof(float);<\/p>\n ESP_LOGI(TAG, "\u6e7f\u5ea6\u8bfb\u53d6: %.2f%%", current_humid);
\n }
\n else {
\n \/\/ \u5176\u4ed6\u7279\u5f81\u6216\u63cf\u8ff0\u7b26
\n rsp.attr_value.len = 0;
\n }<\/p>\n \/\/ \u53d1\u9001\u54cd\u5e94
\n esp_ble_gatts_send_response(gatts_if,
\n param->read.conn_id,
\n param->read.trans_id,
\n ESP_GATT_OK, &rsp);
\n}<\/p>\n \u5199\u4e8b\u4ef6\u5904\u7406，\u7279\u522b\u662fCCCD\u7684\u5199\u5165，\u9700\u8981\u7279\u522b\u6ce8\u610f：<\/p>\n static void handle_write_event(esp_gatt_if_t gatts_if,
\n conn_info_t *conn,
\n esp_ble_gatts_cb_param_t *param)
\n{
\n uint16_t handle = param->write.handle;<\/p>\n if (handle == temp_cccd_handle) {
\n \/\/ \u6e29\u5ea6\u901a\u77e5\u914d\u7f6e\u66f4\u65b0
\n uint16_t cccd_value =
\n *(uint16_t *)param->write.value;<\/p>\n conn->temp_ccc_value = cccd_value;<\/p>\n if (cccd_value == 0x0001) {
\n ESP_LOGI(TAG, "\u6e29\u5ea6\u901a\u77e5\u5df2\u542f\u7528");
\n \/\/ \u542f\u52a8\u6e29\u5ea6\u5b9a\u65f6\u901a\u77e5\u4efb\u52a1
\n start_temperature_notification(conn);
\n } else {
\n ESP_LOGI(TAG, "\u6e29\u5ea6\u901a\u77e5\u5df2\u7981\u7528");
\n \/\/ \u505c\u6b62\u6e29\u5ea6\u5b9a\u65f6\u901a\u77e5\u4efb\u52a1
\n stop_temperature_notification(conn);
\n }
\n }
\n else if (handle == humid_value_handle) {
\n \/\/ \u6e7f\u5ea6\u503c\u5199\u5165（\u914d\u7f6e\u9608\u503c\u7b49）
\n float threshold = *(float *)param->write.value;
\n set_humidity_threshold(threshold);<\/p>\n ESP_LOGI(TAG, "\u6e7f\u5ea6\u9608\u503c\u66f4\u65b0: %.2f%%", threshold);
\n }<\/p>\n \/\/ \u5982\u679c\u9700\u8981\u54cd\u5e94（\u975e\u81ea\u52a8\u54cd\u5e94）
\n if (!param->write.need_rsp) {
\n esp_ble_gatts_send_response(gatts_if,
\n param->write.conn_id,
\n param->write.trans_id,
\n ESP_GATT_OK, NULL);
\n }
\n}<\/p>\n 5. \u6570\u636e\u901a\u4fe1\u4f18\u5316\u4e0e\u529f\u8017\u7ba1\u7406<\/h3>\n\u5728\u5b9e\u9645\u90e8\u7f72\u4e2d，\u901a\u4fe1\u6548\u7387\u548c\u529f\u8017\u5f80\u5f80\u662f\u51b3\u5b9a\u9879\u76ee\u6210\u8d25\u7684\u5173\u952e\u56e0\u7d20\u3002\u7ecf\u8fc7\u591a\u4e2a\u9879\u76ee\u7684\u5b9e\u8df5，\u6211\u603b\u7ed3\u4e86\u4e00\u4e9b\u6709\u6548\u7684\u4f18\u5316\u7b56\u7565\u3002<\/p>\n 5.1 \u6570\u636e\u5206\u5305\u4e0e\u91cd\u7ec4<\/h4>\nBLE\u534f\u8bae\u6bcf\u4e2a\u6570\u636e\u5305\u7684\u6709\u6548\u8f7d\u8377\u6709\u9650（\u9ed8\u8ba423\u5b57\u8282，\u534f\u5546\u540e\u6700\u591a247\u5b57\u8282）\u3002\u4f20\u8f93\u8f83\u5927\u6570\u636e\u65f6\u9700\u8981\u5206\u5305\u53d1\u9001\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u53ef\u9760\u7684\u5206\u5305\u4f20\u8f93\u5b9e\u73b0：<\/p>\n #define MAX_PACKET_SIZE 20 \/\/ \u9884\u75593\u5b57\u8282\u7ed9ATT\u5934<\/p>\n typedef struct {
\n uint8_t data[256];
\n uint16_t total_len;
\n uint16_t sent_len;
\n uint16_t handle;
\n uint8_t packet_seq;
\n} large_data_t;<\/p>\n static void send_large_data(esp_gatt_if_t gatts_if,
\n uint16_t conn_id,
\n uint16_t handle,
\n uint8_t *data,
\n uint16_t len)
\n{
\n large_data_t *ld = malloc(sizeof(large_data_t));<\/p>\n memcpy(ld->data, data, len);
\n ld->total_len = len;
\n ld->sent_len = 0;
\n ld->handle = handle;
\n ld->packet_seq = 0;<\/p>\n \/\/ \u542f\u52a8\u5206\u6bb5\u53d1\u9001\u4efb\u52a1
\n xTaskCreate(send_segmented_task,
\n "send_seg",
\n 4096,
\n (void *)ld,
\n 5,
\n NULL);
\n}<\/p>\n static void send_segmented_task(void *arg)
\n{
\n large_data_t *ld = (large_data_t *)arg;<\/p>\n while (ld->sent_len < ld->total_len) {
\n uint16_t remaining = ld->total_len – ld->sent_len;
\n uint16_t chunk_size = (remaining > MAX_PACKET_SIZE) ?
\n MAX_PACKET_SIZE : remaining;<\/p>\n \/\/ \u6dfb\u52a0\u5e8f\u5217\u53f7（\u53ef\u9009）
\n uint8_t packet[MAX_PACKET_SIZE + 2];
\n packet[0] = ld->packet_seq++;
\n packet[1] = (remaining > MAX_PACKET_SIZE) ? 0 : 1; \/\/ \u6700\u540e\u5305\u6807\u5fd7<\/p>\n memcpy(&packet[2],
\n &ld->data[ld->sent_len],
\n chunk_size);<\/p>\n \/\/ \u53d1\u9001\u6570\u636e\u5305
\n esp_ble_gatts_send_indicate(ld->gatts_if,
\n ld->conn_id,
\n ld->handle,
\n chunk_size + 2,
\n packet,
\n false); \/\/ \u4e0d\u9700\u8981\u786e\u8ba4<\/p>\n ld->sent_len += chunk_size;<\/p>\n \/\/ \u7b49\u5f85ACK\u6216\u5ef6\u8fdf（\u907f\u514d\u62e5\u585e）
\n vTaskDelay(pdMS_TO_TICKS(10));
\n }<\/p>\n free(ld);
\n vTaskDelete(NULL);
\n}<\/p>\n 5.2 \u529f\u8017\u4f18\u5316\u7b56\u7565<\/h4>\n\u5bf9\u4e8e\u7535\u6c60\u4f9b\u7535\u7684\u8bbe\u5907，\u529f\u8017\u4f18\u5316\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7ecf\u8fc7\u9a8c\u8bc1\u7684\u6709\u6548\u65b9\u6cd5：<\/p>\n \u8fde\u63a5\u53c2\u6570\u4f18\u5316\u8868：<\/p>\n \n\u5e94\u7528\u573a\u666f\u8fde\u63a5\u95f4\u9694\u4ece\u673a\u5ef6\u8fdf\u76d1\u63a7\u8d85\u65f6\u9884\u8ba1\u529f\u8017<\/tr>\n \n\n| \u5b9e\u65f6\u63a7\u5236<\/td>\n | 20-30ms<\/td>\n | 0<\/td>\n | 2-4s<\/td>\n | \u9ad8<\/td>\n<\/tr>\n | \n| \u4f20\u611f\u5668\u4e0a\u62a5<\/td>\n | 100-200ms<\/td>\n | 0-2<\/td>\n | 6-8s<\/td>\n | \u4e2d<\/td>\n<\/tr>\n | \n| \u4f4e\u529f\u8017\u5f85\u673a<\/td>\n | 1-2s<\/td>\n | 4-6<\/td>\n | 20-30s<\/td>\n | \u4f4e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u52a8\u6001\u529f\u8017\u7ba1\u7406\u4ee3\u7801\u793a\u4f8b：<\/p>\n typedef enum {
\n POWER_MODE_HIGH = 0, \/\/ \u9ad8\u6027\u80fd\u6a21\u5f0f
\n POWER_MODE_BALANCED, \/\/ \u5e73\u8861\u6a21\u5f0f
\n POWER_MODE_LOW, \/\/ \u4f4e\u529f\u8017\u6a21\u5f0f
\n} power_mode_t;<\/p>\n static power_mode_t current_power_mode = POWER_MODE_BALANCED;<\/p>\n static void adjust_power_mode(power_mode_t new_mode)
\n{
\n if (new_mode == current_power_mode) {
\n return;
\n }<\/p>\n switch (new_mode) {
\n case POWER_MODE_HIGH:
\n \/\/ \u5feb\u901f\u5e7f\u64ad，\u77ed\u8fde\u63a5\u95f4\u9694
\n adv_params.adv_int_min = 0x20; \/\/ 20ms
\n adv_params.adv_int_max = 0x30; \/\/ 30ms
\n set_connection_interval(0x10, 0x20); \/\/ 20-40ms
\n esp_bt_controller_disable();
\n esp_bt_controller_enable(ESP_BT_MODE_BLE);
\n break;<\/p>\n case POWER_MODE_BALANCED:
\n adv_params.adv_int_min = 0x80; \/\/ 80ms
\n adv_params.adv_int_max = 0x100; \/\/ 160ms
\n set_connection_interval(0x40, 0x80); \/\/ 64-128ms
\n break;<\/p>\n case POWER_MODE_LOW:
\n \/\/ \u6162\u901f\u5e7f\u64ad，\u957f\u8fde\u63a5\u95f4\u9694
\n adv_params.adv_int_min = 0x200; \/\/ 320ms
\n adv_params.adv_int_max = 0x400; \/\/ 640ms
\n set_connection_interval(0x200, 0x400); \/\/ 512-1024ms<\/p>\n \/\/ \u964d\u4f4e\u53d1\u5c04\u529f\u7387
\n esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_DEFAULT,
\n ESP_PWR_LVL_N12);
\n break;
\n }<\/p>\n current_power_mode = new_mode;
\n ESP_LOGI(TAG, "\u529f\u8017\u6a21\u5f0f\u5207\u6362\u81f3: %d", new_mode);<\/p>\n \/\/ \u91cd\u65b0\u914d\u7f6e\u5e7f\u64ad
\n if (is_advertising) {
\n esp_ble_gap_stop_advertising();
\n esp_ble_gap_start_advertising(&adv_params);
\n }
\n}<\/p>\n \/\/ \u6839\u636e\u7535\u6c60\u7535\u91cf\u548c\u8fde\u63a5\u72b6\u6001\u81ea\u52a8\u8c03\u6574
\nstatic void auto_adjust_power_mode(void)
\n{
\n float battery_level = read_battery_level();
\n uint8_t connected_devices = count_connected_devices();<\/p>\n if (battery_level < 20.0) {
\n \/\/ \u4f4e\u7535\u91cf，\u5f3a\u5236\u4f4e\u529f\u8017\u6a21\u5f0f
\n adjust_power_mode(POWER_MODE_LOW);
\n }
\n else if (connected_devices == 0) {
\n \/\/ \u65e0\u8fde\u63a5，\u4f7f\u7528\u5e73\u8861\u6216\u4f4e\u529f\u8017\u6a21\u5f0f
\n adjust_power_mode(battery_level < 50.0 ?
\n POWER_MODE_LOW : POWER_MODE_BALANCED);
\n }
\n else {
\n \/\/ \u6709\u8fde\u63a5，\u6839\u636e\u6570\u636e\u9891\u7387\u8c03\u6574
\n if (data_update_freq > 10) { \/\/ \u9ad8\u9891\u66f4\u65b0
\n adjust_power_mode(POWER_MODE_HIGH);
\n } else {
\n adjust_power_mode(POWER_MODE_BALANCED);
\n }
\n }
\n}<\/p>\n 5.3 \u8fde\u63a5\u7ba1\u7406\u4e0e\u72b6\u6001\u540c\u6b65<\/h4>\n\u5728\u591a\u8bbe\u5907\u8fde\u63a5\u573a\u666f\u4e2d，\u8fde\u63a5\u7ba1\u7406\u548c\u72b6\u6001\u540c\u6b65\u662f\u96be\u70b9\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u8fde\u63a5\u7ba1\u7406\u5b9e\u73b0：<\/p>\n #define MAX_DEVICES 3<\/p>\n typedef struct {
\n esp_bd_addr_t addr;
\n uint16_t conn_id;
\n esp_gatt_if_t gatts_if;
\n uint32_t last_activity;
\n device_state_t state;
\n} connected_device_t;<\/p>\n static connected_device_t connected_devices[MAX_DEVICES];
\nstatic uint8_t device_count = 0;<\/p>\n static connected_device_t *find_device_by_addr(esp_bd_addr_t addr)
\n{
\n for (int i = 0; i < device_count; i++) {
\n if (memcmp(connected_devices[i].addr, addr, 6) == 0) {
\n return &connected_devices[i];
\n }
\n }
\n return NULL;
\n}<\/p>\n static connected_device_t *add_device(esp_bd_addr_t addr,
\n uint16_t conn_id,
\n esp_gatt_if_t gatts_if)
\n{
\n if (device_count >= MAX_DEVICES) {
\n ESP_LOGW(TAG, "\u8fde\u63a5\u6570\u5df2\u8fbe\u4e0a\u9650");
\n return NULL;
\n }<\/p>\n connected_device_t *dev = &connected_devices[device_count++];
\n memcpy(dev->addr, addr, 6);
\n dev->conn_id = conn_id;
\n dev->gatts_if = gatts_if;
\n dev->last_activity = xTaskGetTickCount();
\n dev->state = DEVICE_CONNECTED;<\/p>\n ESP_LOGI(TAG, "\u8bbe\u5907\u5df2\u6dfb\u52a0: %02X:%02X:%02X:%02X:%02X:%02X",
\n addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);<\/p>\n return dev;
\n}<\/p>\n static void remove_device(esp_bd_addr_t addr)
\n{
\n for (int i = 0; i < device_count; i++) {
\n if (memcmp(connected_devices[i].addr, addr, 6) == 0) {
\n \/\/ \u5c06\u6700\u540e\u4e00\u4e2a\u8bbe\u5907\u79fb\u5230\u5f53\u524d\u4f4d\u7f6e
\n if (i < device_count – 1) {
\n memcpy(&connected_devices[i],
\n &connected_devices[device_count – 1],
\n sizeof(connected_device_t));
\n }
\n device_count–;
\n break;
\n }
\n }
\n}<\/p>\n \/\/ \u5b9a\u671f\u68c0\u67e5\u4e0d\u6d3b\u8dc3\u8fde\u63a5
\nstatic void check_inactive_connections(void)
\n{
\n uint32_t current_time = xTaskGetTickCount();<\/p>\n for (int i = 0; i < device_count; i++) {
\n uint32_t inactive_time = current_time –
\n connected_devices[i].last_activity;<\/p>\n if (inactive_time > pdMS_TO_TICKS(30000)) { \/\/ 30\u79d2\u65e0\u6d3b\u52a8
\n ESP_LOGW(TAG, "\u8bbe\u5907\u4e0d\u6d3b\u8dc3，\u51c6\u5907\u65ad\u5f00: %02X:%02X:%02X:%02X:%02X:%02X",
\n connected_devices[i].addr[0],
\n connected_devices[i].addr[1],
\n connected_devices[i].addr[2],
\n connected_devices[i].addr[3],
\n connected_devices[i].addr[4],
\n connected_devices[i].addr[5]);<\/p>\n \/\/ \u53d1\u9001\u65ad\u5f00\u8bf7\u6c42
\n esp_ble_gap_disconnect(connected_devices[i].addr);
\n }
\n }
\n}<\/p>\n 6. \u8c03\u8bd5\u6280\u5de7\u4e0e\u5e38\u89c1\u95ee\u9898\u89e3\u51b3<\/h3>\n\u5373\u4f7f\u6309\u7167\u6700\u4f73\u5b9e\u8df5\u5f00\u53d1，\u5728\u5b9e\u9645\u90e8\u7f72\u4e2d\u4ecd\u7136\u4f1a\u9047\u5230\u5404\u79cd\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u6211\u5728\u591a\u4e2a\u9879\u76ee\u4e2d\u79ef\u7d2f\u7684\u8c03\u8bd5\u7ecf\u9a8c\u548c\u5e38\u89c1\u95ee\u9898\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n 6.1 \u7cfb\u7edf\u65e5\u5fd7\u914d\u7f6e\u4f18\u5316<\/h4>\n\u5408\u7406\u7684\u65e5\u5fd7\u914d\u7f6e\u53ef\u4ee5\u5e2e\u52a9\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898，\u540c\u65f6\u907f\u514d\u65e5\u5fd7\u8f93\u51fa\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd：<\/p>\n \/\/ \u5728app_main\u4e2d\u914d\u7f6e\u65e5\u5fd7\u7ea7\u522b
\nvoid app_main(void)
\n{
\n \/\/ \u8bbe\u7f6e\u4e0d\u540c\u6a21\u5757\u7684\u65e5\u5fd7\u7ea7\u522b
\n esp_log_level_set("*", ESP_LOG_WARN); \/\/ \u9ed8\u8ba4\u8b66\u544a\u7ea7\u522b
\n esp_log_level_set("BLE_SERVER", ESP_LOG_INFO); \/\/ \u4e3b\u6a21\u5757\u4fe1\u606f\u7ea7\u522b
\n esp_log_level_set("GATT", ESP_LOG_DEBUG); \/\/ GATT\u6a21\u5757\u8c03\u8bd5\u7ea7\u522b
\n esp_log_level_set("GAP", ESP_LOG_DEBUG); \/\/ GAP\u6a21\u5757\u8c03\u8bd5\u7ea7\u522b<\/p>\n \/\/ \u542f\u7528\u6838\u5fc3\u8f6c\u50a8（\u7528\u4e8e\u5206\u6790\u5d29\u6e83）
\n esp_core_dump_init();<\/p>\n \/\/ \u521d\u59cb\u5316\u84dd\u7259
\n ble_init();<\/p>\n \/\/ … \u5176\u4ed6\u521d\u59cb\u5316\u4ee3\u7801
\n}<\/p>\n 6.2 \u5e38\u89c1\u95ee\u9898\u6392\u67e5\u8868<\/h4>\n\n\u95ee\u9898\u73b0\u8c61\u53ef\u80fd\u539f\u56e0\u6392\u67e5\u65b9\u6cd5\u89e3\u51b3\u65b9\u6848<\/tr>\n \n\n| \u8bbe\u5907\u65e0\u6cd5\u88ab\u53d1\u73b0<\/td>\n | \u5e7f\u64ad\u672a\u542f\u52a8\u5e7f\u64ad\u53c2\u6570\u9519\u8bef\u5c04\u9891\u5e72\u6270<\/td>\n | 1. \u68c0\u67e5\u5e7f\u64ad\u72b6\u60012. \u9a8c\u8bc1\u5e7f\u64ad\u6570\u636e3. \u66f4\u6362\u6d4b\u8bd5\u73af\u5883<\/td>\n | 1. \u786e\u8ba4esp_ble_gap_start_advertising\u8c03\u75282. \u68c0\u67e5\u5e7f\u64ad\u6570\u636e\u957f\u5ea6\u548c\u5185\u5bb93. \u8c03\u6574\u5e7f\u64ad\u4fe1\u9053<\/td>\n<\/tr>\n | \n| \u8fde\u63a5\u9891\u7e41\u65ad\u5f00<\/td>\n | \u8fde\u63a5\u53c2\u6570\u4e0d\u5408\u9002\u4fe1\u53f7\u5f3a\u5ea6\u5f31\u5185\u5b58\u4e0d\u8db3<\/td>\n | 1. \u76d1\u63a7\u8fde\u63a5\u53c2\u6570\u4e8b\u4ef62. \u6d4b\u8bd5RSSI\u503c3. \u68c0\u67e5\u5185\u5b58\u4f7f\u7528<\/td>\n | 1. \u8c03\u6574\u8fde\u63a5\u95f4\u9694\u548c\u8d85\u65f62. \u4f18\u5316\u5929\u7ebf\u8bbe\u8ba1\u6216\u4f4d\u7f6e3. \u51cf\u5c11\u8fde\u63a5\u6570\u6216\u670d\u52a1\u590d\u6742\u5ea6<\/td>\n<\/tr>\n | \n| \u6570\u636e\u4f20\u8f93\u6162<\/td>\n | MTU\u592a\u5c0f\u8fde\u63a5\u95f4\u9694\u957f\u6570\u636e\u5206\u5305\u8fc7\u591a<\/td>\n | 1. \u68c0\u67e5MTU\u534f\u5546\u7ed3\u679c2. \u76d1\u63a7\u5b9e\u9645\u8fde\u63a5\u95f4\u96943. \u5206\u6790\u6570\u636e\u5305\u6570\u91cf<\/td>\n | 1. \u8bf7\u6c42\u66f4\u5927\u7684MTU2. \u7f29\u77ed\u8fde\u63a5\u95f4\u96943. \u4f18\u5316\u6570\u636e\u6253\u5305<\/td>\n<\/tr>\n | \n| \u529f\u8017\u8fc7\u9ad8<\/td>\n | \u5e7f\u64ad\u95f4\u9694\u592a\u77ed\u8fde\u63a5\u53c2\u6570\u6fc0\u8fdb\u5c04\u9891\u529f\u7387\u8fc7\u9ad8<\/td>\n | 1. \u6d4b\u91cf\u5e73\u5747\u7535\u6d412. \u5206\u6790\u5404\u72b6\u6001\u8017\u65f63. \u68c0\u67e5\u53d1\u5c04\u529f\u7387\u8bbe\u7f6e<\/td>\n | 1. \u8c03\u6574\u5e7f\u64ad\u7b56\u75652. \u4f18\u5316\u8fde\u63a5\u53c2\u65703. \u964d\u4f4e\u53d1\u5c04\u529f\u7387<\/td>\n<\/tr>\n | \n| \u5185\u5b58\u6cc4\u6f0f<\/td>\n | \u52a8\u6001\u5206\u914d\u672a\u91ca\u653e\u56de\u8c03\u51fd\u6570\u8d44\u6e90\u672a\u6e05\u7406\u4efb\u52a1\u5806\u6808\u4e0d\u8db3<\/td>\n | 1. \u4f7f\u7528\u5806\u5185\u5b58\u76d1\u63a72. \u68c0\u67e5\u6240\u6709malloc\/free3. \u76d1\u63a7\u4efb\u52a1\u5806\u6808\u4f7f\u7528<\/td>\n | 1. \u786e\u4fdd\u6210\u5bf9\u5206\u914d\u91ca\u653e2. \u4f7f\u7528\u9759\u6001\u5206\u914d\u4f18\u51483. \u8c03\u6574\u4efb\u52a1\u5806\u6808\u5927\u5c0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n6.3 \u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/h4>\n\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u90e8\u7f72\u524d，\u5efa\u8bae\u8fdb\u884c\u5168\u9762\u7684\u6027\u80fd\u6d4b\u8bd5：<\/p>\n \/\/ \u6027\u80fd\u76d1\u63a7\u7ed3\u6784
\ntypedef struct {
\n uint32_t connect_count;
\n uint32_t disconnect_count;
\n uint32_t read_ops;
\n uint32_t write_ops;
\n uint32_t notify_ops;
\n uint32_t error_count;
\n uint32_t total_memory;
\n uint32_t free_memory;
\n uint32_t min_free_memory;
\n} performance_stats_t;<\/p>\n static performance_stats_t stats;<\/p>\n \/\/ \u5b9a\u671f\u8f93\u51fa\u6027\u80fd\u62a5\u544a
\nstatic void print_performance_report(void)
\n{
\n ESP_LOGI("PERF", "=== \u6027\u80fd\u62a5\u544a ===");
\n ESP_LOGI("PERF", "\u8fde\u63a5\u7edf\u8ba1: \u6210\u529f=%d, \u65ad\u5f00=%d",
\n stats.connect_count, stats.disconnect_count);
\n ESP_LOGI("PERF", "\u64cd\u4f5c\u7edf\u8ba1: \u8bfb=%d, \u5199=%d, \u901a\u77e5=%d",
\n stats.read_ops, stats.write_ops, stats.notify_ops);
\n ESP_LOGI("PERF", "\u9519\u8bef\u7edf\u8ba1: \u603b\u6570=%d", stats.error_count);
\n ESP_LOGI("PERF", "\u5185\u5b58\u4f7f\u7528: \u603b\u91cf=%d, \u5269\u4f59=%d, \u6700\u4f4e\u5269\u4f59=%d",
\n stats.total_memory, stats.free_memory, stats.min_free_memory);<\/p>\n \/\/ \u8ba1\u7b97\u8fde\u63a5\u7a33\u5b9a\u6027
\n if (stats.connect_count > 0) {
\n float stability = 100.0 * (1.0 – (float)stats.disconnect_count \/
\n (float)stats.connect_count);
\n ESP_LOGI("PERF", "\u8fde\u63a5\u7a33\u5b9a\u6027: %.1f%%", stability);
\n }<\/p>\n \/\/ \u66f4\u65b0\u6700\u5c0f\u7a7a\u95f2\u5185\u5b58
\n if (stats.free_memory < stats.min_free_memory) {
\n stats.min_free_memory = stats.free_memory;
\n }
\n}<\/p>\n \/\/ \u5185\u5b58\u76d1\u63a7\u4efb\u52a1
\nstatic void memory_monitor_task(void *arg)
\n{
\n while (1) {
\n multi_heap_info_t info;
\n heap_caps_get_info(&info, MALLOC_CAP_DEFAULT);<\/p>\n stats.total_memory = info.total_free_bytes + info.total_allocated_bytes;
\n stats.free_memory = info.total_free_bytes;<\/p>\n vTaskDelay(pdMS_TO_TICKS(5000)); \/\/ \u6bcf5\u79d2\u68c0\u67e5\u4e00\u6b21
\n }
\n}<\/p>\n 6.4 \u5b9e\u9645\u90e8\u7f72\u6ce8\u610f\u4e8b\u9879<\/h4>\n\u5728\u5c06\u8bbe\u5907\u90e8\u7f72\u5230\u5b9e\u9645\u73af\u5883\u524d，\u6709\u51e0\u4e2a\u5173\u952e\u70b9\u9700\u8981\u9a8c\u8bc1：<\/p>\n - \u5c04\u9891\u6027\u80fd\u6d4b\u8bd5：\u5728\u4e0d\u540c\u8ddd\u79bb\u3001\u4e0d\u540c\u969c\u788d\u7269\u73af\u5883\u4e0b\u6d4b\u8bd5\u901a\u4fe1\u53ef\u9760\u6027<\/li>\n
- \u591a\u8bbe\u5907\u5e72\u6270\u6d4b\u8bd5：\u5728\u591a\u4e2a\u8bbe\u5907\u540c\u65f6\u5de5\u4f5c\u7684\u573a\u666f\u4e0b\u6d4b\u8bd5\u6027\u80fd<\/li>\n
- \u957f\u671f\u7a33\u5b9a\u6027\u6d4b\u8bd5：\u8fde\u7eed\u8fd0\u884c24-72\u5c0f\u65f6，\u76d1\u63a7\u5185\u5b58\u4f7f\u7528\u548c\u8fde\u63a5\u7a33\u5b9a\u6027<\/li>\n
- \u529f\u8017\u9a8c\u8bc1：\u4f7f\u7528\u7535\u6d41\u8868\u6d4b\u91cf\u5404\u79cd\u6a21\u5f0f\u4e0b\u7684\u5b9e\u9645\u529f\u8017<\/li>\n
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