380 lines
15 KiB
C
380 lines
15 KiB
C
#include "bsp_ble.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include "esp_bt.h"
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#include "esp_bt_main.h"
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#include "esp_gap_ble_api.h"
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#include "esp_gatt_common_api.h"
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#define PROFILE_NUM 1
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#define PROFILE_APP_IDX 0
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#define ESP_APP_ID 0x55
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#define SAMPLE_DEVICE_NAME "RM_ESP32"
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#define SVC_INST_ID 0
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#define GATTS_CHAR_VAL_LEN_MAX 500
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#define PREPARE_BUF_MAX_SIZE 1024
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#define CHAR_DECLARATION_SIZE (sizeof(uint8_t))
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#define ADV_CONFIG_FLAG (1 << 0)
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#define SCAN_RSP_CONFIG_FLAG (1 << 1)
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/* 广播包定义 */
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static uint8_t raw_adv_data[] = {
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/* flags */
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0x02, 0x01, 0x06,
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/* tx power*/
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0x02, 0x0a, 0xeb,
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/* service uuid */
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0x03, 0x03, 0xFF, 0x00,
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/* device name */
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0x0a, 0x09, 'R', 'O', 'B', '_', 'E', 'S', 'P', '3', '2'};
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static uint8_t raw_scan_rsp_data[] = {
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/* flags */
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0x02, 0x01, 0x06,
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/* tx power */
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0x02, 0x0a, 0xeb,
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/* service uuid */
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0x03, 0x03, 0xFF, 0x00};
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/* 服务器 UUID */
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static const bsp_ble_gatt_uuid_t gatts_service_uuid = UUID_GATTS_SERVICE_TEST;
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static const uint16_t primary_service_uuid = UUID_PRIMARY_SERVICE;
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static const uint16_t character_declaration_uuid = UUID_CHARACTER_DECL;
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static const uint16_t character_client_config_uuid = UUID_CLIENT_CONFIG;
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/* character read and write */
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static const uint8_t char_prop_read = ESP_GATT_CHAR_PROP_BIT_READ;
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static const uint8_t char_prop_write = ESP_GATT_CHAR_PROP_BIT_WRITE;
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static const uint8_t char_prop_read_write_notify =
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ESP_GATT_CHAR_PROP_BIT_WRITE | ESP_GATT_CHAR_PROP_BIT_READ |
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ESP_GATT_CHAR_PROP_BIT_NOTIFY;
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static bsp_ble_config_t config = {
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.adv_params =
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{
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.adv_int_min = 0x20,
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.adv_int_max = 0x40,
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.adv_type = ADV_TYPE_IND,
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.own_addr_type = BLE_ADDR_TYPE_PUBLIC,
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.channel_map = ADV_CHNL_ALL,
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.adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
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},
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.char_inst =
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{
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{.val_uuid = UUID_GATTS_CHAR_TEST_A, .char_value = {"RM ESPA"}},
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{.val_uuid = UUID_GATTS_CHAR_TEST_B, .char_value = {"RM ESPB"}},
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{.val_uuid = UUID_GATTS_CHAR_TEST_C, .char_value = {"RM ESPC"}},
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},
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.heart_measurement_ccc = {0x00, 0x00},
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.gatt_db =
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{
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// Service Declaration
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[IDX_SVC] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16, (uint8_t *)&primary_service_uuid,
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ESP_GATT_PERM_READ, sizeof(uint16_t),
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sizeof(gatts_service_uuid),
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(uint8_t *)&gatts_service_uuid}},
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/* Characteristic Declaration A:0x2902 */
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[IDX_CHAR_VOL] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&character_declaration_uuid,
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ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,
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CHAR_DECLARATION_SIZE,
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(uint8_t *)&char_prop_read_write_notify}},
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/* Characteristic Value */
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[IDX_CHAR_VAL_VOL] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&config.char_inst[0].val_uuid,
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ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
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GATTS_CHAR_VAL_LEN_MAX,
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sizeof(config.char_inst[0].char_value),
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(uint8_t *)config.char_inst[0].char_value}},
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/* Client Characteristic Configuration Descriptor */
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[IDX_CHAR_CFG_VOL] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&character_client_config_uuid,
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ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
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sizeof(uint16_t),
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sizeof(config.heart_measurement_ccc),
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(uint8_t *)config.heart_measurement_ccc}},
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/* Characteristic Declaration */
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[IDX_CHAR_B] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&character_declaration_uuid,
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ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,
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CHAR_DECLARATION_SIZE,
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(uint8_t *)&char_prop_read}},
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/* Characteristic Value */
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[IDX_CHAR_VAL_B] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&config.char_inst[1].val_uuid,
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ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
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GATTS_CHAR_VAL_LEN_MAX,
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sizeof(config.char_inst[1].char_value),
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(uint8_t *)config.char_inst[1].char_value}},
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/* Characteristic Declaration */
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[IDX_CHAR_C] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&character_declaration_uuid,
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ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,
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CHAR_DECLARATION_SIZE,
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(uint8_t *)&char_prop_write}},
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/* Characteristic Value */
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[IDX_CHAR_VAL_C] = {{ESP_GATT_AUTO_RSP},
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{ESP_UUID_LEN_16,
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(uint8_t *)&config.char_inst[2].val_uuid,
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ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
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GATTS_CHAR_VAL_LEN_MAX,
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sizeof(config.char_inst[2].char_value),
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(uint8_t *)config.char_inst[2].char_value}},
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},
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};
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/* Full Database Description - Used to add attributes into the database */
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static void gatts_profile_event_handler(esp_gatts_cb_event_t event,
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esp_gatt_if_t gatts_if,
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esp_ble_gatts_cb_param_t *param);
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/* One gatt-based profile one app_id and one gatts_if, this array will store the
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* gatts_if returned by ESP_GATTS_REG_EVT */
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static bsp_gatts_profile_t heart_rate_profile_tab[PROFILE_NUM] = {
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[PROFILE_APP_IDX] =
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{
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.gatts_cb = gatts_profile_event_handler,
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.gatts_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is
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ESP_GATT_IF_NONE */
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},
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};
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static void gap_event_handler(esp_gap_ble_cb_event_t event,
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esp_ble_gap_cb_param_t *param) {
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switch (event) {
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case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:
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config.adv_config_done &= (~ADV_CONFIG_FLAG);
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if (config.adv_config_done == 0)
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esp_ble_gap_start_advertising(&config.adv_params);
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break;
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case ESP_GAP_BLE_SCAN_RSP_DATA_RAW_SET_COMPLETE_EVT:
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config.adv_config_done &= (~SCAN_RSP_CONFIG_FLAG);
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if (config.adv_config_done == 0)
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esp_ble_gap_start_advertising(&config.adv_params);
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break;
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case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
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/* advertising start complete event to indicate advertising start
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* successfully or failed */
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case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT:
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case ESP_GAP_BLE_UPDATE_CONN_PARAMS_EVT:
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default:
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break;
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}
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}
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static void example_prepare_write_event_env(
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esp_gatt_if_t gatts_if, bsp_prepare_env_t *prepare_write_env,
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esp_ble_gatts_cb_param_t *param) {
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esp_gatt_status_t status = ESP_GATT_OK;
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if (prepare_write_env->prepare_buf == NULL) {
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prepare_write_env->prepare_buf =
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(uint8_t *)malloc(PREPARE_BUF_MAX_SIZE * sizeof(uint8_t));
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prepare_write_env->prepare_len = 0;
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if (prepare_write_env->prepare_buf == NULL) {
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status = ESP_GATT_NO_RESOURCES;
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}
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} else {
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if (param->write.offset > PREPARE_BUF_MAX_SIZE) {
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status = ESP_GATT_INVALID_OFFSET;
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} else if ((param->write.offset + param->write.len) >
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PREPARE_BUF_MAX_SIZE) {
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status = ESP_GATT_INVALID_ATTR_LEN;
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}
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}
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/*send response when param->write.need_rsp is true */
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if (param->write.need_rsp) {
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esp_gatt_rsp_t *gatt_rsp = (esp_gatt_rsp_t *)malloc(sizeof(esp_gatt_rsp_t));
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if (gatt_rsp != NULL) {
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gatt_rsp->attr_value.len = param->write.len;
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gatt_rsp->attr_value.handle = param->write.handle;
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gatt_rsp->attr_value.offset = param->write.offset;
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gatt_rsp->attr_value.auth_req = ESP_GATT_AUTH_REQ_NONE;
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memcpy(gatt_rsp->attr_value.value, param->write.value, param->write.len);
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esp_err_t response_err =
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esp_ble_gatts_send_response(gatts_if, param->write.conn_id,
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param->write.trans_id, status, gatt_rsp);
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free(gatt_rsp);
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}
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}
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if (status != ESP_GATT_OK) {
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return;
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}
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memcpy(prepare_write_env->prepare_buf + param->write.offset,
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param->write.value, param->write.len);
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prepare_write_env->prepare_len += param->write.len;
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}
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static void example_exec_write_event_env(bsp_prepare_env_t *prepare_write_env,
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esp_ble_gatts_cb_param_t *param) {
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if (prepare_write_env->prepare_buf) {
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free(prepare_write_env->prepare_buf);
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prepare_write_env->prepare_buf = NULL;
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}
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prepare_write_env->prepare_len = 0;
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}
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static void gatts_profile_event_handler(esp_gatts_cb_event_t event,
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esp_gatt_if_t gatts_if,
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esp_ble_gatts_cb_param_t *param) {
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switch (event) {
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case ESP_GATTS_REG_EVT: {
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/* Device ID */
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esp_ble_gap_set_device_name(SAMPLE_DEVICE_NAME);
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/* 广播 */
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esp_ble_gap_config_adv_data_raw(raw_adv_data, sizeof(raw_adv_data));
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config.adv_config_done |= ADV_CONFIG_FLAG;
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esp_ble_gap_config_scan_rsp_data_raw(raw_scan_rsp_data,
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sizeof(raw_scan_rsp_data));
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config.adv_config_done |= SCAN_RSP_CONFIG_FLAG;
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esp_ble_gatts_create_attr_tab(config.gatt_db, gatts_if, HRS_IDX_NB,
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SVC_INST_ID);
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} break;
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case ESP_GATTS_READ_EVT: {
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/* 读ESP */
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uint8_t sensor[] = {0xFE, rand(), 0xAF};
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if (config.heart_rate_handle_table[IDX_CHAR_VAL_VOL] ==
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param->read.handle) {
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esp_ble_gatts_set_attr_value(param->read.handle,
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sizeof(config.char_inst[0].char_value),
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(uint8_t *)config.char_inst[0].char_value);
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}
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} break;
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case ESP_GATTS_WRITE_EVT: {
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if (!param->write.is_prep) {
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if (config.heart_rate_handle_table[IDX_CHAR_VAL_VOL] ==
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param->write.handle &&
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param->write.len == 3) {
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/*A character */
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if (param->write.value[0] == 0x52 && param->write.value[2] == 0x4D) {
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memcpy(config.char_inst[0].char_value, ¶m->write.value[1],
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sizeof(param->write.value[1]));
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/* R+value+M */
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}
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}
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if (config.heart_rate_handle_table[IDX_CHAR_CFG_VOL] ==
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param->write.handle &&
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param->write.len == 2) {
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/*A characterConfig */
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uint16_t descr_value =
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param->write.value[1] << 8 | param->write.value[0];
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if (descr_value == 0x0001) {
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uint8_t notify_data[] = {"Notice Enabled info"};
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esp_ble_gatts_send_indicate(
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gatts_if, param->write.conn_id,
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config.heart_rate_handle_table[IDX_CHAR_VAL_VOL],
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sizeof(notify_data), notify_data, false);
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} else if (descr_value == 0x0002) {
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uint8_t indicate_data[] = {0x01, 0x02};
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esp_ble_gatts_send_indicate(
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gatts_if, param->write.conn_id,
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config.heart_rate_handle_table[IDX_CHAR_VAL_VOL],
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sizeof(indicate_data), indicate_data, true);
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}
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}
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/* send response when param->write.need_srp is true*/
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if (param->write.need_rsp) {
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esp_ble_gatts_send_response(gatts_if, param->write.conn_id,
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param->write.trans_id, ESP_GATT_OK, NULL);
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} else {
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}
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} else {
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/* handle prepare write */
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example_prepare_write_event_env(gatts_if, &config.write_env, param);
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}
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} break;
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case ESP_GATTS_EXEC_WRITE_EVT: {
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example_exec_write_event_env(&config.write_env, param);
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} break;
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case ESP_GATTS_MTU_EVT:
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case ESP_GATTS_CONF_EVT:
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case ESP_GATTS_START_EVT:
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case ESP_GATTS_CONNECT_EVT: {
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esp_ble_conn_update_params_t conn_params = {0};
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memcpy(conn_params.bda, param->connect.remote_bda, sizeof(esp_bd_addr_t));
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/* For the iOS system, please refer to Apple official documents about
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* the BLE connection parameters restrictions. */
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conn_params.latency = 0;
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conn_params.max_int = 0x20; // max_int = 0x20*1.25ms = 40ms
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conn_params.min_int = 0x10; // min_int = 0x10*1.25ms = 20ms
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conn_params.timeout = 400; // timeout = 400*10ms = 4000ms
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// start sent the update connection parameters to the peer device.
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esp_ble_gap_update_conn_params(&conn_params);
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} break;
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case ESP_GATTS_DISCONNECT_EVT: {
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esp_ble_gap_start_advertising(&config.adv_params);
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} break;
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case ESP_GATTS_CREAT_ATTR_TAB_EVT: {
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if (param->add_attr_tab.status != ESP_GATT_OK &&
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param->add_attr_tab.num_handle != HRS_IDX_NB) {
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} else {
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memcpy(config.heart_rate_handle_table, param->add_attr_tab.handles,
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sizeof(config.heart_rate_handle_table));
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esp_ble_gatts_start_service(config.heart_rate_handle_table[IDX_SVC]);
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}
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} break;
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case ESP_GATTS_ADD_CHAR_DESCR_EVT:
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case ESP_GATTS_STOP_EVT:
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case ESP_GATTS_OPEN_EVT:
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case ESP_GATTS_CANCEL_OPEN_EVT:
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case ESP_GATTS_CLOSE_EVT:
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case ESP_GATTS_LISTEN_EVT:
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case ESP_GATTS_CONGEST_EVT:
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case ESP_GATTS_UNREG_EVT:
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case ESP_GATTS_DELETE_EVT:
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default:
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break;
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}
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}
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static void gatts_event_handler(esp_gatts_cb_event_t event,
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esp_gatt_if_t gatts_if,
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esp_ble_gatts_cb_param_t *param) {
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/* If event is register event, store the gatts_if for each profile */
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if (event == ESP_GATTS_REG_EVT) {
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if (param->reg.status == ESP_GATT_OK) {
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heart_rate_profile_tab[PROFILE_APP_IDX].gatts_if = gatts_if;
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}
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}
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do {
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int idx;
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for (idx = 0; idx < PROFILE_NUM; idx++) {
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/* ESP_GATT_IF_NONE, not specify a certain gatt_if, need to call
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* every profile cb function */
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if (gatts_if == ESP_GATT_IF_NONE ||
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gatts_if == heart_rate_profile_tab[idx].gatts_if) {
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if (heart_rate_profile_tab[idx].gatts_cb) {
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heart_rate_profile_tab[idx].gatts_cb(event, gatts_if, param);
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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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void bsp_ble_init() {
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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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esp_bt_controller_init(&bt_cfg);
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esp_bt_controller_enable(ESP_BT_MODE_BLE);
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esp_bluedroid_init();
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esp_bluedroid_enable();
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esp_ble_gatts_register_callback(gatts_event_handler);
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esp_ble_gap_register_callback(gap_event_handler);
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esp_ble_gatts_app_register(ESP_APP_ID);
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esp_ble_gatt_set_local_mtu(500);
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}
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