HI Sir:
I have meet a strange question using the BLE_UART example.
The code as following:
static ble_uuid_t vive_adv_uuids[] = {{BLE_UUID_NUS_SERVICE, BLE_UUID_TYPE_BLE}}; /**< Universally unique service identifier. */
and the advertising_init as following:
static void advertising_init(void)
{
uint32_t err_code;
ble_advdata_t advdata;
ble_advdata_manuf_data_t manuf_specific_data;
manuf_specific_data.company_identifier = 0;
manuf_specific_data.data.p_data = (uint8_t *) sn_number;
manuf_specific_data.data.size = 8;
memset(&advdata, 0, sizeof(advdata));
advdata.name_type = BLE_ADVDATA_FULL_NAME;
advdata.include_appearance = false;
advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
advdata.uuids_complete.uuid_cnt = sizeof(vive_adv_uuids) / sizeof(vive_adv_uuids[0]);
advdata.uuids_complete.p_uuids = vive_adv_uuids;
advdata.p_manuf_specific_data=&manuf_specific_data;
ble_adv_modes_config_t options = {0};
options.ble_adv_fast_enabled = BLE_ADV_FAST_ENABLED;
options.ble_adv_fast_interval = APP_ADV_INTERVAL;
options.ble_adv_fast_timeout = APP_ADV_TIMEOUT_IN_SECONDS;
err_code = ble_advertising_init(&advdata, NULL, &options, on_adv_evt, NULL);
APP_ERROR_CHECK(err_code);
}
And modified the service_init as following :
uint32_t ble_nus_init(ble_nus_t * p_nus, const ble_nus_init_t * p_nus_init)
{
uint32_t err_code;
ble_uuid_t ble_uuid;
VERIFY_PARAM_NOT_NULL(p_nus);
VERIFY_PARAM_NOT_NULL(p_nus_init);
// Initialize the service structure.
p_nus->conn_handle = BLE_CONN_HANDLE_INVALID;
p_nus->data_handler = p_nus_init->data_handler;
p_nus->is_notification_enabled = false;
// Add the service.
BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_NUS_SERVICE);
err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,&ble_uuid,&p_nus->service_handle);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
// Add the RX Characteristic.
err_code = rx_char_add(p_nus, p_nus_init);
VERIFY_SUCCESS(err_code);
// Add the TX Characteristic.
err_code = tx_char_add(p_nus, p_nus_init);
VERIFY_SUCCESS(err_code);
return NRF_SUCCESS;
}
and the TX & RX added function as following :
static uint32_t rx_char_add(ble_nus_t * p_nus, const ble_nus_init_t * p_nus_init)
{
/**@snippet [Adding proprietary characteristic to S110 SoftDevice] */
ble_gatts_char_md_t char_md;
ble_gatts_attr_md_t cccd_md;
ble_gatts_attr_t attr_char_value;
ble_uuid_t ble_uuid;
ble_gatts_attr_md_t attr_md;
memset(&cccd_md, 0, sizeof(cccd_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
cccd_md.vloc = BLE_GATTS_VLOC_STACK;
memset(&char_md, 0, sizeof(char_md));
char_md.char_props.notify = 1;
char_md.p_char_user_desc = NULL;
char_md.p_char_pf = NULL;
char_md.p_user_desc_md = NULL;
char_md.p_cccd_md = &cccd_md;
char_md.p_sccd_md = NULL;
BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_NUS_RX_CHARACTERISTIC);
memset(&attr_md, 0, sizeof(attr_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
attr_md.vloc = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen = 1;
memset(&attr_char_value, 0, sizeof(attr_char_value));
attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = sizeof(uint8_t);
attr_char_value.init_offs = 0;
attr_char_value.max_len = BLE_NUS_MAX_RX_CHAR_LEN;
return sd_ble_gatts_characteristic_add(p_nus->service_handle,&char_md,&attr_char_value,&p_nus->rx_handles);
}
static uint32_t tx_char_add(ble_nus_t * p_nus, const ble_nus_init_t * p_nus_init)
{
ble_gatts_char_md_t char_md;
ble_gatts_attr_t attr_char_value;
ble_uuid_t ble_uuid;
ble_gatts_attr_md_t attr_md;
memset(&char_md, 0, sizeof(char_md));
char_md.char_props.write = 1;
char_md.char_props.write_wo_resp = 1;
char_md.p_char_user_desc = NULL;
char_md.p_char_pf = NULL;
char_md.p_user_desc_md = NULL;
char_md.p_cccd_md = NULL;
char_md.p_sccd_md = NULL;
BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_NUS_TX_CHARACTERISTIC);
memset(&attr_md, 0, sizeof(attr_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
attr_md.vloc = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen = 1;
memset(&attr_char_value, 0, sizeof(attr_char_value));
attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = 1;
attr_char_value.init_offs = 0;
attr_char_value.max_len = BLE_NUS_MAX_TX_CHAR_LEN;
return sd_ble_gatts_characteristic_add(p_nus->service_handle,&char_md,&attr_char_value,&p_nus->tx_handles);
}
The question is very strange ,we using nrfconnect app on iphone and android mobile (MI Note3) to scan the device:
1.The UUID is the same in two mobile phone（using the nrfconnect to test)
iphone will display 0xFFF0,and android will display the uuid is :
0x0000FFF0-0000-1000-8000-00805F9B34FB.
2.And the RX & TX Characteristic
There is a very strange, the iphone will display the TX &RX Characteristic ID:
{{0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0xF6, 0xFF, 0x40, 0x6E}}
But the Android phone display the RX &TX Characteristic ID As following :
0x0000FFF6-0000-1000-8000-00805F9B34FB.
Why ,How can i modify it ?
And how to do to realize only 16bits Id will be dislplay?
