- 学会了添加 characteristic ,还得学会添加 service,本文来学习新增蓝牙服务。
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目录
前言
在上一篇文章,我们使用 ESP-IDF 的示例框架,很方便的就添加好了新的特征值(characteristic ),我们说过,就是开发 service 和 characteristic,所以我们还需要学会添加自己的 Service 。
本文目的明确:添加一个 Service 。
ESP32-C3 入门专栏目录:【导航】ESP32-C3 入门教程目录 【快速跳转】
❤️
ESP32-C3学习 蓝牙 篇系列博文连接:
❤️
测试使用的开发板:
自己画一块ESP32-C3 的开发板(第一次使用立创EDA)(PCB到手)
❤️
测试使用的开发环境:
ESP32-C3 VScode开发环境搭建(基于乐鑫官方ESP-IDF——Windows和Ubuntu双环境)
❤️
蓝牙篇系列相关博文:
ESP32-C3 学习测试 蓝牙 篇(一、认识 ESP-IDF 的蓝牙框架、简单的了解蓝牙协议栈)
ESP32-C3 学习测试 蓝牙 篇(二、蓝牙调试APP、开发板手机连接初体验)
ESP32-C3 学习测试 蓝牙 篇(三、认识蓝牙 GATT 协议)
ESP32-C3 学习测试 蓝牙 篇(四、GATT Server 示例解析)
ESP32-C3 学习测试 蓝牙 篇(五、添加 characteristic)
一、添加一个 Service
相对于 characteristic 来说,service 会复杂一点,但是在乐鑫官方论坛直接已经有乐鑫的工程师给过示例,所以大家都可以参考示例来进行,防止链接失效,在本文最后直接把示例代码给贴出来了,示例链接:
esp32 如何创建具有多个蓝牙服务和多个特征值的示例?
因为有示例(示例在文末),照着这个来就没问题。
在我自己测试的时候,我是比示例多创建了一个 characteristic ,而且其中有一个带通知的 characteristic,比示例中添加的地方多一点,我把需要修改的地方总结记录一下,如果后续再应用的时候需要用到什么特别的再说。
1.1 新 service 头文件枚举定义
1.2 新 service 的一些定义
1.3 新 service 的属性表
1.4 新 service 的通知
1.5 ☆新 service 的创建☆
新 service 的创建操作是在 gatts_profile_event_handler 回调函数中使用一个标志位通过判断实现的:
到这里,新的 service 添加程序就修改完成,根据例程和我们前面文章的学习这没什么难度,但是实际上我测试也用了一些时间。
要细心!拷贝代码,修改代码要细心! = =!
二、测试
上面的程序修改完成以后,测试就简单了:
上图可以看到,在我们之前的基础上,我们多了一个 Service, 根据我们的程序 Service 中有2个 characteristic ,characteristic 的属性与程序设置的一致, 通知的读取也正常。
其他的一些读写操作可以根据前面几篇文章自己测试,我测试过一切正常。
结语
本文成功添加了一个 Service,我们没有深入分析原理,所以没什么难度,根据示例框架来即可。
磨磨唧唧花了这么多篇文章,好歹也把蓝牙玩起来了,但是到目前为止,我们还没有结合开发板上面的
一些其他设备做蓝牙的使用。
❤️
我们还没有实现我们使用蓝牙的第一个小目标:
通过蓝牙通讯,把传感器的数据发送给手机,然后手机也可以控制开发板上的LED灯。
但是有了这几篇文章的基础,我们接下来就要实现我们的这个小目标,做一个简单的应用。
❤️
应用完善程度取决于博主到时候测试使用的情况,如果顺利肯定完善点,不顺利就……⁄(⁄ ⁄•⁄ω⁄•⁄ ⁄)⁄ 大家多多理解……
本文就到这里,谢谢大家,最后附上官方论坛的示例源码:
附录(源码)
gatts_table_creat_demo.c:
- /*
- This example code is in the Public Domain (or CC0 licensed, at your option.)
- Unless required by applicable law or agreed to in writing, this
- software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
- CONDITIONS OF ANY KIND, either express or implied.
- */
- /****************************************************************************
- *
- * This demo showcases creating a GATT database using a predefined attribute table.
- * It acts as a GATT server and can send adv data, be connected by client.
- * Run the gatt_client demo, the client demo will automatically connect to the gatt_server_service_table demo.
- * Client demo will enable GATT server's notify after connection. The two devices will then exchange
- * data.
- *
- ****************************************************************************/
- #include "freertos/FreeRTOS.h"
- #include "freertos/task.h"
- #include "freertos/event_groups.h"
- #include "esp_system.h"
- #include "esp_log.h"
- #include "nvs_flash.h"
- #include "esp_bt.h"
- #include "esp_gap_ble_api.h"
- #include "esp_gatts_api.h"
- #include "esp_bt_main.h"
- #include "gatts_table_creat_demo.h"
- #include "esp_gatt_common_api.h"
- #define GATTS_TABLE_TAG "GATTS_TABLE_DEMO"
- #define PROFILE_NUM 1
- #define PROFILE_APP_IDX 0
- #define ESP_APP_ID 0x55
- #define SAMPLE_DEVICE_NAME "ESP_GATTS_DEMO"
- #define SVC_INST_ID 0
- #define SVC_INST_ID1 1
- /* The max length of characteristic value. When the GATT client performs a write or prepare write operation,
- * the data length must be less than GATTS_DEMO_CHAR_VAL_LEN_MAX.
- */
- #define GATTS_DEMO_CHAR_VAL_LEN_MAX 500
- #define PREPARE_BUF_MAX_SIZE 1024
- #define CHAR_DECLARATION_SIZE (sizeof(uint8_t))
- #define ADV_CONFIG_FLAG (1 << 0)
- #define SCAN_RSP_CONFIG_FLAG (1 << 1)
- static uint8_t adv_config_done = 0;
- uint16_t heart_rate_handle_table[HRS_IDX_NB];
- uint16_t heart_rate_handle_table2[HRS_IDX_NB2];
- typedef struct {
- uint8_t *prepare_buf;
- int prepare_len;
- } prepare_type_env_t;
- static prepare_type_env_t prepare_write_env;
- #define CONFIG_SET_RAW_ADV_DATA
- #ifdef CONFIG_SET_RAW_ADV_DATA
- static uint8_t raw_adv_data[] = {
- /* flags */
- 0x02, 0x01, 0x06,
- /* tx power*/
- 0x02, 0x0a, 0xeb,
- /* service uuid */
- 0x03, 0x03, 0xFF, 0x00,
- /* device name */
- 0x0f, 0x09, 'E', 'S', 'P', '_', 'G', 'A', 'T', 'T', 'S', '_', 'D','E', 'M', 'P'
- };
- static uint8_t raw_scan_rsp_data[] = {
- /* flags */
- 0x02, 0x01, 0x06,
- /* tx power */
- 0x02, 0x0a, 0xeb,
- /* service uuid */
- 0x03, 0x03, 0xFF,0x00
- };
- #else
- static uint8_t service_uuid[16] = {
- /* LSB <--------------------------------------------------------------------------------> MSB */
- //first uuid, 16bit, [12],[13] is the value
- 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
- };
- /* The length of adv data must be less than 31 bytes */
- static esp_ble_adv_data_t adv_data = {
- .set_scan_rsp = false,
- .include_name = true,
- .include_txpower = true,
- .min_interval = 0x0006, //slave connection min interval, Time = min_interval * 1.25 msec
- .max_interval = 0x0010, //slave connection max interval, Time = max_interval * 1.25 msec
- .appearance = 0x00,
- .manufacturer_len = 0, //TEST_MANUFACTURER_DATA_LEN,
- .p_manufacturer_data = NULL, //test_manufacturer,
- .service_data_len = 0,
- .p_service_data = NULL,
- .service_uuid_len = sizeof(service_uuid),
- .p_service_uuid = service_uuid,
- .flag = (ESP_BLE_ADV_FLAG_GEN_DISC | ESP_BLE_ADV_FLAG_BREDR_NOT_SPT),
- };
- // scan response data
- static esp_ble_adv_data_t scan_rsp_data = {
- .set_scan_rsp = true,
- .include_name = true,
- .include_txpower = true,
- .min_interval = 0x0006,
- .max_interval = 0x0010,
- .appearance = 0x00,
- .manufacturer_len = 0, //TEST_MANUFACTURER_DATA_LEN,
- .p_manufacturer_data = NULL, //&test_manufacturer[0],
- .service_data_len = 0,
- .p_service_data = NULL,
- .service_uuid_len = sizeof(service_uuid),
- .p_service_uuid = service_uuid,
- .flag = (ESP_BLE_ADV_FLAG_GEN_DISC | ESP_BLE_ADV_FLAG_BREDR_NOT_SPT),
- };
- #endif /* CONFIG_SET_RAW_ADV_DATA */
- static esp_ble_adv_params_t adv_params = {
- .adv_int_min = 0x20,
- .adv_int_max = 0x40,
- .adv_type = ADV_TYPE_IND,
- .own_addr_type = BLE_ADDR_TYPE_PUBLIC,
- .channel_map = ADV_CHNL_ALL,
- .adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
- };
- struct gatts_profile_inst {
- esp_gatts_cb_t gatts_cb;
- uint16_t gatts_if;
- uint16_t app_id;
- uint16_t conn_id;
- uint16_t service_handle;
- esp_gatt_srvc_id_t service_id;
- uint16_t char_handle;
- esp_bt_uuid_t char_uuid;
- esp_gatt_perm_t perm;
- esp_gatt_char_prop_t property;
- uint16_t descr_handle;
- esp_bt_uuid_t descr_uuid;
- };
- static void gatts_profile_event_handler(esp_gatts_cb_event_t event,
- esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
- /* One gatt-based profile one app_id and one gatts_if, this array will store the gatts_if returned by ESP_GATTS_REG_EVT */
- static struct gatts_profile_inst heart_rate_profile_tab[PROFILE_NUM] = {
- [PROFILE_APP_IDX] = {
- .gatts_cb = gatts_profile_event_handler,
- .gatts_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */
- },
- };
- /* Service */
- static const uint16_t GATTS_SERVICE_UUID_TEST = 0x00FF;
- static const uint16_t GATTS_CHAR_UUID_TEST_A = 0xFF01;
- static const uint16_t GATTS_CHAR_UUID_TEST_B = 0xFF02;
- static const uint16_t GATTS_CHAR_UUID_TEST_C = 0xFF03;
- static const uint16_t GATTS_SERVICE_UUID_TEST2 = 0x00EE;
- static const uint16_t GATTS_CHAR_UUID_TEST_A2 = 0xEE01;
- static const uint16_t primary_service_uuid = ESP_GATT_UUID_PRI_SERVICE;
- static const uint16_t character_declaration_uuid = ESP_GATT_UUID_CHAR_DECLARE;
- static const uint16_t character_client_config_uuid = ESP_GATT_UUID_CHAR_CLIENT_CONFIG;
- static const uint8_t char_prop_read = ESP_GATT_CHAR_PROP_BIT_READ;
- static const uint8_t char_prop_write = ESP_GATT_CHAR_PROP_BIT_WRITE;
- static const uint8_t char_prop_read_write_notify = ESP_GATT_CHAR_PROP_BIT_WRITE | ESP_GATT_CHAR_PROP_BIT_READ | ESP_GATT_CHAR_PROP_BIT_NOTIFY;
- static const uint8_t char_prop_read_write = ESP_GATT_CHAR_PROP_BIT_WRITE | ESP_GATT_CHAR_PROP_BIT_READ;
- static const uint8_t heart_measurement_ccc[2] = {0x00, 0x00};
- static const uint8_t char_value[4] = {0x11, 0x22, 0x33, 0x44};
- /* Full Database Description - Used to add attributes into the database */
- static const esp_gatts_attr_db_t gatt_db[HRS_IDX_NB] =
- {
- // Service Declaration
- [IDX_SVC] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&primary_service_uuid, ESP_GATT_PERM_READ,
- sizeof(uint16_t), sizeof(GATTS_SERVICE_UUID_TEST), (uint8_t *)&GATTS_SERVICE_UUID_TEST}},
- /* Characteristic Declaration */
- [IDX_CHAR_A] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ,
- CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write_notify}},
- /* Characteristic Value */
- [IDX_CHAR_VAL_A] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&GATTS_CHAR_UUID_TEST_A, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
- GATTS_DEMO_CHAR_VAL_LEN_MAX, sizeof(char_value), (uint8_t *)char_value}},
- /* Client Characteristic Configuration Descriptor */
- [IDX_CHAR_CFG_A] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
- sizeof(uint16_t), sizeof(heart_measurement_ccc), (uint8_t *)heart_measurement_ccc}},
- /* Characteristic Declaration */
- [IDX_CHAR_B] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ,
- CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read}},
- /* Characteristic Value */
- [IDX_CHAR_VAL_B] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&GATTS_CHAR_UUID_TEST_B, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
- GATTS_DEMO_CHAR_VAL_LEN_MAX, sizeof(char_value), (uint8_t *)char_value}},
- /* Characteristic Declaration */
- [IDX_CHAR_C] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ,
- CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_write}},
- /* Characteristic Value */
- [IDX_CHAR_VAL_C] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&GATTS_CHAR_UUID_TEST_C, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
- GATTS_DEMO_CHAR_VAL_LEN_MAX, sizeof(char_value), (uint8_t *)char_value}},
- /* Characteristic Declaration */
- [IDX_CHAR_D] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ,
- CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_write}},
- /* Characteristic Value */
- [IDX_CHAR_VAL_D] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&GATTS_CHAR_UUID_TEST_C, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
- GATTS_DEMO_CHAR_VAL_LEN_MAX, sizeof(char_value), (uint8_t *)char_value}}
- };
- static const esp_gatts_attr_db_t gatt_db2[HRS_IDX_NB2] =
- {
- // Service Declaration2
- [IDX_SVC2] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&primary_service_uuid, ESP_GATT_PERM_READ,
- sizeof(uint16_t), sizeof(GATTS_SERVICE_UUID_TEST2), (uint8_t *)&GATTS_SERVICE_UUID_TEST2}},
- /* Characteristic Declaration */
- [IDX_CHAR_A2] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ,
- CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write}},
- /* Characteristic Value */
- [IDX_CHAR_VAL_A2] =
- {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&GATTS_CHAR_UUID_TEST_A2, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
- GATTS_DEMO_CHAR_VAL_LEN_MAX, sizeof(char_value), (uint8_t *)char_value}}
- };
- static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
- {
- switch (event) {
- #ifdef CONFIG_SET_RAW_ADV_DATA
- case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:
- adv_config_done &= (~ADV_CONFIG_FLAG);
- if (adv_config_done == 0){
- esp_ble_gap_start_advertising(&adv_params);
- }
- break;
- case ESP_GAP_BLE_SCAN_RSP_DATA_RAW_SET_COMPLETE_EVT:
- adv_config_done &= (~SCAN_RSP_CONFIG_FLAG);
- if (adv_config_done == 0){
- esp_ble_gap_start_advertising(&adv_params);
- }
- break;
- #else
- case ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT:
- adv_config_done &= (~ADV_CONFIG_FLAG);
- if (adv_config_done == 0){
- esp_ble_gap_start_advertising(&adv_params);
- }
- break;
- case ESP_GAP_BLE_SCAN_RSP_DATA_SET_COMPLETE_EVT:
- adv_config_done &= (~SCAN_RSP_CONFIG_FLAG);
- if (adv_config_done == 0){
- esp_ble_gap_start_advertising(&adv_params);
- }
- break;
- #endif
- case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
- /* advertising start complete event to indicate advertising start successfully or failed */
- if (param->adv_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
- ESP_LOGE(GATTS_TABLE_TAG, "advertising start failed");
- }else{
- ESP_LOGI(GATTS_TABLE_TAG, "advertising start successfully");
- }
- break;
- case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT:
- if (param->adv_stop_cmpl.status != ESP_BT_STATUS_SUCCESS) {
- ESP_LOGE(GATTS_TABLE_TAG, "Advertising stop failed");
- }
- else {
- ESP_LOGI(GATTS_TABLE_TAG, "Stop adv successfully\n");
- }
- break;
- case ESP_GAP_BLE_UPDATE_CONN_PARAMS_EVT:
- ESP_LOGI(GATTS_TABLE_TAG, "update connection params status = %d, min_int = %d, max_int = %d,conn_int = %d,latency = %d, timeout = %d",
- param->update_conn_params.status,
- param->update_conn_params.min_int,
- param->update_conn_params.max_int,
- param->update_conn_params.conn_int,
- param->update_conn_params.latency,
- param->update_conn_params.timeout);
- break;
- default:
- break;
- }
- }
- void example_prepare_write_event_env(esp_gatt_if_t gatts_if, prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param)
- {
- ESP_LOGI(GATTS_TABLE_TAG, "prepare write, handle = %d, value len = %d", param->write.handle, param->write.len);
- esp_gatt_status_t status = ESP_GATT_OK;
- if (prepare_write_env->prepare_buf == NULL) {
- prepare_write_env->prepare_buf = (uint8_t *)malloc(PREPARE_BUF_MAX_SIZE * sizeof(uint8_t));
- prepare_write_env->prepare_len = 0;
- if (prepare_write_env->prepare_buf == NULL) {
- ESP_LOGE(GATTS_TABLE_TAG, "%s, Gatt_server prep no mem", __func__);
- status = ESP_GATT_NO_RESOURCES;
- }
- } else {
- if(param->write.offset > PREPARE_BUF_MAX_SIZE) {
- status = ESP_GATT_INVALID_OFFSET;
- } else if ((param->write.offset + param->write.len) > PREPARE_BUF_MAX_SIZE) {
- status = ESP_GATT_INVALID_ATTR_LEN;
- }
- }
- /*send response when param->write.need_rsp is true */
- if (param->write.need_rsp){
- esp_gatt_rsp_t *gatt_rsp = (esp_gatt_rsp_t *)malloc(sizeof(esp_gatt_rsp_t));
- if (gatt_rsp != NULL){
- gatt_rsp->attr_value.len = param->write.len;
- gatt_rsp->attr_value.handle = param->write.handle;
- gatt_rsp->attr_value.offset = param->write.offset;
- gatt_rsp->attr_value.auth_req = ESP_GATT_AUTH_REQ_NONE;
- memcpy(gatt_rsp->attr_value.value, param->write.value, param->write.len);
- esp_err_t response_err = esp_ble_gatts_send_response(gatts_if, param->write.conn_id, param->write.trans_id, status, gatt_rsp);
- if (response_err != ESP_OK){
- ESP_LOGE(GATTS_TABLE_TAG, "Send response error");
- }
- free(gatt_rsp);
- }else{
- ESP_LOGE(GATTS_TABLE_TAG, "%s, malloc failed", __func__);
- }
- }
- if (status != ESP_GATT_OK){
- return;
- }
- memcpy(prepare_write_env->prepare_buf + param->write.offset,
- param->write.value,
- param->write.len);
- prepare_write_env->prepare_len += param->write.len;
- }
- void example_exec_write_event_env(prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param){
- if (param->exec_write.exec_write_flag == ESP_GATT_PREP_WRITE_EXEC && prepare_write_env->prepare_buf){
- esp_log_buffer_hex(GATTS_TABLE_TAG, prepare_write_env->prepare_buf, prepare_write_env->prepare_len);
- }else{
- ESP_LOGI(GATTS_TABLE_TAG,"ESP_GATT_PREP_WRITE_CANCEL");
- }
- if (prepare_write_env->prepare_buf) {
- free(prepare_write_env->prepare_buf);
- prepare_write_env->prepare_buf = NULL;
- }
- prepare_write_env->prepare_len = 0;
- }
- bool create_tab1 = false;
- static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param)
- {
- switch (event) {
- case ESP_GATTS_REG_EVT:{
- esp_err_t set_dev_name_ret = esp_ble_gap_set_device_name(SAMPLE_DEVICE_NAME);
- if (set_dev_name_ret){
- ESP_LOGE(GATTS_TABLE_TAG, "set device name failed, error code = %x", set_dev_name_ret);
- }
- #ifdef CONFIG_SET_RAW_ADV_DATA
- esp_err_t raw_adv_ret = esp_ble_gap_config_adv_data_raw(raw_adv_data, sizeof(raw_adv_data));
- if (raw_adv_ret){
- ESP_LOGE(GATTS_TABLE_TAG, "config raw adv data failed, error code = %x ", raw_adv_ret);
- }
- adv_config_done |= ADV_CONFIG_FLAG;
- esp_err_t raw_scan_ret = esp_ble_gap_config_scan_rsp_data_raw(raw_scan_rsp_data, sizeof(raw_scan_rsp_data));
- if (raw_scan_ret){
- ESP_LOGE(GATTS_TABLE_TAG, "config raw scan rsp data failed, error code = %x", raw_scan_ret);
- }
- adv_config_done |= SCAN_RSP_CONFIG_FLAG;
- #else
- //config adv data
- esp_err_t ret = esp_ble_gap_config_adv_data(&adv_data);
- if (ret){
- ESP_LOGE(GATTS_TABLE_TAG, "config adv data failed, error code = %x", ret);
- }
- adv_config_done |= ADV_CONFIG_FLAG;
- //config scan response data
- ret = esp_ble_gap_config_adv_data(&scan_rsp_data);
- if (ret){
- ESP_LOGE(GATTS_TABLE_TAG, "config scan response data failed, error code = %x", ret);
- }
- adv_config_done |= SCAN_RSP_CONFIG_FLAG;
- #endif
- esp_err_t create_attr_ret = esp_ble_gatts_create_attr_tab(gatt_db, gatts_if, HRS_IDX_NB, SVC_INST_ID);
- if (create_attr_ret){
- ESP_LOGE(GATTS_TABLE_TAG, "create attr table failed, error code = %x", create_attr_ret);
- }
- }
- break;
- case ESP_GATTS_READ_EVT:
- ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_READ_EVT");
- break;
- case ESP_GATTS_WRITE_EVT:
- if (!param->write.is_prep){
- // the data length of gattc write must be less than GATTS_DEMO_CHAR_VAL_LEN_MAX.
- ESP_LOGI(GATTS_TABLE_TAG, "GATT_WRITE_EVT, handle = %d, value len = %d, value :", param->write.handle, param->write.len);
- esp_log_buffer_hex(GATTS_TABLE_TAG, param->write.value, param->write.len);
- if (heart_rate_handle_table[IDX_CHAR_CFG_A] == param->write.handle && param->write.len == 2){
- uint16_t descr_value = param->write.value[1]<<8 | param->write.value[0];
- if (descr_value == 0x0001){
- ESP_LOGI(GATTS_TABLE_TAG, "notify enable");
- uint8_t notify_data[15];
- for (int i = 0; i < sizeof(notify_data); ++i)
- {
- notify_data[i] = i % 0xff;
- }
- //the size of notify_data[] need less than MTU size
- esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, heart_rate_handle_table[IDX_CHAR_VAL_A],
- sizeof(notify_data), notify_data, false);
- }else if (descr_value == 0x0002){
- ESP_LOGI(GATTS_TABLE_TAG, "indicate enable");
- uint8_t indicate_data[15];
- for (int i = 0; i < sizeof(indicate_data); ++i)
- {
- indicate_data[i] = i % 0xff;
- }
- //the size of indicate_data[] need less than MTU size
- esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, heart_rate_handle_table[IDX_CHAR_VAL_A],
- sizeof(indicate_data), indicate_data, true);
- }
- else if (descr_value == 0x0000){
- ESP_LOGI(GATTS_TABLE_TAG, "notify/indicate disable ");
- }else{
- ESP_LOGE(GATTS_TABLE_TAG, "unknown descr value");
- esp_log_buffer_hex(GATTS_TABLE_TAG, param->write.value, param->write.len);
- }
- }
- /* send response when param->write.need_rsp is true*/
- if (param->write.need_rsp){
- esp_ble_gatts_send_response(gatts_if, param->write.conn_id, param->write.trans_id, ESP_GATT_OK, NULL);
- }
- }else{
- /* handle prepare write */
- example_prepare_write_event_env(gatts_if, &prepare_write_env, param);
- }
- break;
- case ESP_GATTS_EXEC_WRITE_EVT:
- // the length of gattc prepare write data must be less than GATTS_DEMO_CHAR_VAL_LEN_MAX.
- ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_EXEC_WRITE_EVT");
- example_exec_write_event_env(&prepare_write_env, param);
- break;
- case ESP_GATTS_MTU_EVT:
- ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_MTU_EVT, MTU %d", param->mtu.mtu);
- break;
- case ESP_GATTS_CONF_EVT:
- ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_CONF_EVT, status = %d, attr_handle %d", param->conf.status, param->conf.handle);
- break;
- case ESP_GATTS_START_EVT:
- if(create_tab1 == false) {
- ESP_LOGI(GATTS_TABLE_TAG, "SERVICE_START_EVT1, status %d, service_handle %d", param->start.status, param->start.service_handle);
- esp_err_t create_attr_ret1 = esp_ble_gatts_create_attr_tab(gatt_db2, gatts_if, HRS_IDX_NB2, SVC_INST_ID1);
- if (create_attr_ret1){
- ESP_LOGE(GATTS_TABLE_TAG, "create attr table2 failed, error code = %x", create_attr_ret1);
- }
- create_tab1 = true;
- } else {
- ESP_LOGI(GATTS_TABLE_TAG, "SERVICE_START_EVT2, status %d, service_handle %d", param->start.status, param->start.service_handle);
- }
- break;
- case ESP_GATTS_CONNECT_EVT:
- ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_CONNECT_EVT, conn_id = %d", param->connect.conn_id);
- esp_log_buffer_hex(GATTS_TABLE_TAG, param->connect.remote_bda, 6);
- esp_ble_conn_update_params_t conn_params = {0};
- memcpy(conn_params.bda, param->connect.remote_bda, sizeof(esp_bd_addr_t));
- /* For the iOS system, please refer to Apple official documents about the BLE connection parameters restrictions. */
- conn_params.latency = 0;
- conn_params.max_int = 0x20; // max_int = 0x20*1.25ms = 40ms
- conn_params.min_int = 0x10; // min_int = 0x10*1.25ms = 20ms
- conn_params.timeout = 400; // timeout = 400*10ms = 4000ms
- //start sent the update connection parameters to the peer device.
- esp_ble_gap_update_conn_params(&conn_params);
- break;
- case ESP_GATTS_DISCONNECT_EVT:
- ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_DISCONNECT_EVT, reason = 0x%x", param->disconnect.reason);
- esp_ble_gap_start_advertising(&adv_params);
- break;
- case ESP_GATTS_CREAT_ATTR_TAB_EVT:{
- if(create_tab1 == false) {
- if (param->add_attr_tab.status != ESP_GATT_OK){
- ESP_LOGE(GATTS_TABLE_TAG, "create attribute table failed, error code=0x%x", param->add_attr_tab.status);
- }
- else if (param->add_attr_tab.num_handle != HRS_IDX_NB){
- ESP_LOGE(GATTS_TABLE_TAG, "create attribute table abnormally, num_handle (%d) \
- doesn't equal to HRS_IDX_NB(%d)", param->add_attr_tab.num_handle, HRS_IDX_NB);
- }
- else {
- ESP_LOGI(GATTS_TABLE_TAG, "create attribute table successfully, the number handle = %d\n",param->add_attr_tab.num_handle);
- memcpy(heart_rate_handle_table, param->add_attr_tab.handles, sizeof(heart_rate_handle_table));
- esp_ble_gatts_start_service(heart_rate_handle_table[IDX_SVC]);
- }
- } else {
- if (param->add_attr_tab.status != ESP_GATT_OK){
- ESP_LOGE(GATTS_TABLE_TAG, "create attribute table failed, error code=0x%x", param->add_attr_tab.status);
- }
- else if (param->add_attr_tab.num_handle != HRS_IDX_NB2){
- ESP_LOGE(GATTS_TABLE_TAG, "create attribute table abnormally, num_handle (%d) \
- doesn't equal to HRS_IDX_NB(%d)", param->add_attr_tab.num_handle, HRS_IDX_NB2);
- }
- else {
- ESP_LOGI(GATTS_TABLE_TAG, "create attribute table successfully, the number handle = %d\n",param->add_attr_tab.num_handle);
- memcpy(heart_rate_handle_table2, param->add_attr_tab.handles, sizeof(heart_rate_handle_table2));
- esp_ble_gatts_start_service(heart_rate_handle_table2[IDX_SVC2]);
- }
- }
- break;
- }
- case ESP_GATTS_STOP_EVT:
- case ESP_GATTS_OPEN_EVT:
- case ESP_GATTS_CANCEL_OPEN_EVT:
- case ESP_GATTS_CLOSE_EVT:
- case ESP_GATTS_LISTEN_EVT:
- case ESP_GATTS_CONGEST_EVT:
- case ESP_GATTS_UNREG_EVT:
- case ESP_GATTS_DELETE_EVT:
- default:
- break;
- }
- }
- static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param)
- {
- /* If event is register event, store the gatts_if for each profile */
- if (event == ESP_GATTS_REG_EVT) {
- if (param->reg.status == ESP_GATT_OK) {
- heart_rate_profile_tab[PROFILE_APP_IDX].gatts_if = gatts_if;
- } else {
- ESP_LOGE(GATTS_TABLE_TAG, "reg app failed, app_id %04x, status %d",
- param->reg.app_id,
- param->reg.status);
- return;
- }
- }
- do {
- int idx;
- for (idx = 0; idx < PROFILE_NUM; idx++) {
- /* ESP_GATT_IF_NONE, not specify a certain gatt_if, need to call every profile cb function */
- if (gatts_if == ESP_GATT_IF_NONE || gatts_if == heart_rate_profile_tab[idx].gatts_if) {
- if (heart_rate_profile_tab[idx].gatts_cb) {
- heart_rate_profile_tab[idx].gatts_cb(event, gatts_if, param);
- }
- }
- }
- } while (0);
- }
- void app_main(void)
- {
- esp_err_t ret;
- /* Initialize NVS. */
- ret = nvs_flash_init();
- if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
- ESP_ERROR_CHECK(nvs_flash_erase());
- ret = nvs_flash_init();
- }
- ESP_ERROR_CHECK( ret );
- ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
- esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
- ret = esp_bt_controller_init(&bt_cfg);
- if (ret) {
- ESP_LOGE(GATTS_TABLE_TAG, "%s enable controller failed: %s", __func__, esp_err_to_name(ret));
- return;
- }
- ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);
- if (ret) {
- ESP_LOGE(GATTS_TABLE_TAG, "%s enable controller failed: %s", __func__, esp_err_to_name(ret));
- return;
- }
- ret = esp_bluedroid_init();
- if (ret) {
- ESP_LOGE(GATTS_TABLE_TAG, "%s init bluetooth failed: %s", __func__, esp_err_to_name(ret));
- return;
- }
- ret = esp_bluedroid_enable();
- if (ret) {
- ESP_LOGE(GATTS_TABLE_TAG, "%s enable bluetooth failed: %s", __func__, esp_err_to_name(ret));
- return;
- }
- ret = esp_ble_gatts_register_callback(gatts_event_handler);
- if (ret){
- ESP_LOGE(GATTS_TABLE_TAG, "gatts register error, error code = %x", ret);
- return;
- }
- ret = esp_ble_gap_register_callback(gap_event_handler);
- if (ret){
- ESP_LOGE(GATTS_TABLE_TAG, "gap register error, error code = %x", ret);
- return;
- }
- ret = esp_ble_gatts_app_register(ESP_APP_ID);
- if (ret){
- ESP_LOGE(GATTS_TABLE_TAG, "gatts app register error, error code = %x", ret);
- return;
- }
- esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(500);
- if (local_mtu_ret){
- ESP_LOGE(GATTS_TABLE_TAG, "set local MTU failed, error code = %x", local_mtu_ret);
- }
- }
复制代码 gatts_table_creat_demo.h
- /*
- This example code is in the Public Domain (or CC0 licensed, at your option.)
- Unless required by applicable law or agreed to in writing, this
- software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
- CONDITIONS OF ANY KIND, either express or implied.
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- /* Attributes State Machine */
- enum
- {
- IDX_SVC,
- IDX_CHAR_A,
- IDX_CHAR_VAL_A,
- IDX_CHAR_CFG_A,
- IDX_CHAR_B,
- IDX_CHAR_VAL_B,
- IDX_CHAR_C,
- IDX_CHAR_VAL_C,
- IDX_CHAR_D,
- IDX_CHAR_VAL_D,
- HRS_IDX_NB,
- };
- enum
- {
- IDX_SVC2,
- IDX_CHAR_A2,
- IDX_CHAR_VAL_A2,
- HRS_IDX_NB2,
- };
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