Advertising problem after changing UUID.

Question

Hello .

I want send BLE data of sensor value.

So, I am using the central module(HM-10) And peripheral is nRF52832 of custom module.

Connection and data communication with the smartphone are good, but communication between modules is not possible.

I changed UUID of nRF52 by below.

#define BLE_UUID_NUS_SERVICE 0xFFE0 /**< The UUID of the Nordic UART Service. */

#define OPCODE_LENGTH 1
#define HANDLE_LENGTH 2

.

#define BLE_UUID_NUS_TX_CHARACTERISTIC 0xFFE1 /**< The UUID of the TX Characteristic. */

#define BLE_NUS_MAX_RX_CHAR_LEN BLE_NUS_MAX_DATA_LEN /**< Maximum length of the RX Characteristic (in bytes). */
#define BLE_NUS_MAX_TX_CHAR_LEN BLE_NUS_MAX_DATA_LEN /**< Maximum length of the TX Characteristic (in bytes). */

#define NUS_BASE_UUID {{0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}} /**< Used vendor specific UUID. */

.

uint32_t ble_nus_init(ble_nus_t * p_nus, ble_nus_init_t const * p_nus_init)
{
ret_code_t err_code;
ble_uuid_t ble_uuid;
ble_uuid128_t nus_base_uuid = NUS_BASE_UUID;
ble_add_char_params_t add_char_params;

VERIFY_PARAM_NOT_NULL(p_nus);
VERIFY_PARAM_NOT_NULL(p_nus_init);

// Initialize the service structure.
p_nus->data_handler = p_nus_init->data_handler;

/**@snippet [Adding proprietary Service to the SoftDevice] */
// Add a custom base UUID.
err_code = sd_ble_uuid_vs_add(&nus_base_uuid, &p_nus->uuid_type);
VERIFY_SUCCESS(err_code);

ble_uuid.type = p_nus->uuid_type;
ble_uuid.uuid = BLE_UUID_NUS_SERVICE;

// Add the service.
err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
&ble_uuid,
&p_nus->service_handle);
/**@snippet [Adding proprietary Service to the SoftDevice] */
VERIFY_SUCCESS(err_code);

// Add the TX Characteristic.
/**@snippet [Adding proprietary characteristic to the SoftDevice] */
memset(&add_char_params, 0, sizeof(add_char_params));
add_char_params.uuid = BLE_UUID_NUS_TX_CHARACTERISTIC;
add_char_params.uuid_type = p_nus->uuid_type;
add_char_params.max_len = BLE_NUS_MAX_TX_CHAR_LEN;
add_char_params.init_len = sizeof(uint8_t);
add_char_params.is_var_len = true;
add_char_params.char_props.notify = 1;
add_char_params.char_props.write = 1;
add_char_params.char_props.indicate = 1;
add_char_params.char_props.read = 1;
add_char_params.char_props.write_wo_resp = 1;

add_char_params.read_access = SEC_OPEN;
add_char_params.write_access = SEC_OPEN;
add_char_params.cccd_write_access = SEC_OPEN;

return characteristic_add(p_nus->service_handle, &add_char_params, &p_nus->tx_handles);
/**@snippet [Adding proprietary characteristic to the SoftDevice] */
}

.

.However, By changing the UUID, advertising does not work and communication does not work.

The advertising side is as follows.

//Advertising initialization function
//structure
static ble_advertising_init_t adv_params;
static ble_uuid_t uuids[1];
memset(&adv_params, 0, sizeof(adv_params));

//advertising data packet setting
int8_t tx_power = 4;
adv_params.advdata.name_type = BLE_ADVDATA_FULL_NAME;
adv_params.advdata.include_appearance = false;
adv_params.advdata.p_tx_power_level = &tx_power;
adv_params.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;

//Scan Response Data Setting
//UUID setting
uuids[0].type = BLE_UUID_TYPE_VENDOR_BEGIN;
uuids[0].uuid = BLE_UUID_NUS_SERVICE;
adv_params.srdata.uuids_complete.uuid_cnt = 1;
adv_params.srdata.uuids_complete.p_uuids = uuids;

//Advertising parameters setting about connection
adv_params.config.ble_adv_whitelist_enabled = true;
adv_params.config.ble_adv_fast_enabled = true;
adv_params.config.ble_adv_fast_interval = 64;
adv_params.config.ble_adv_fast_timeout = 12000;
adv_params.evt_handler = on_adv_evt;

//Advertising initialization
err_code = ble_advertising_init(&advertising, &adv_params);

//connection setting renewal
ble_advertising_conn_cfg_tag_set(&advertising, CONN_CFG_TAG);

I'm not sure where the problem is. Where should I fix it?

I would appreciate it if you check.

Thank you.

Regards.