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我们实际应用中，经常会遇到修改UUID的应用，默认SDK的UUID是16位，现在介绍修改方法 1）
2） void service_tspp_init(void)
{
ble_uuid_t ble_uuid;
ble_gatts_char_handles_t handles;
uint8_t tspp_uuid_type;
static const ble_uuid128_t tspp_vs_uuid = {
{0x1F, 0x77, 0x8A, 0xAB, 0x78, 0x7D, 0xA3, 0xB6, 0xBE, 0x41, 0x82, 0xE5, 0x00, 0x00, 0x66, 0xFE}};
ble_uuid_vs_add(&tspp_vs_uuid, &tspp_uuid_type);
ble_uuid.type = tspp_uuid_type;
ble_uuid.uuid = 0x0001;
// BLE_UUID_BLE_ASSIGN(ble_uuid, 0xFF01); // TSPP service UUID
sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &m_start_handle);
ble_gatts_char_md_t char_md;
ble_gatts_attr_t attr_char_value;
ble_gatts_attr_md_t attr_md;
ble_gatts_attr_md_t cccd_md;
memset(&attr_char_value, 0, sizeof(attr_char_value));
memset(&attr_md, 0, sizeof(attr_md));
memset(&char_md, 0, sizeof(char_md));
attr_md.vloc = BLE_GATTS_VLOC_USER;
char_md.char_props.write_wo_resp = 1;
char_md.char_props.write = 1;
ble_uuid.uuid = 0x0002;
// BLE_UUID_BLE_ASSIGN(ble_uuid, 0xFF02); // TSPP write command characteristic uuid
attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
sd_ble_gatts_characteristic_add(m_start_handle, &char_md, &attr_char_value, &handles);
memset(&char_md, 0, sizeof(char_md));
memset(&attr_char_value, 0, sizeof(attr_char_value));
memset(&cccd_md, 0, sizeof(cccd_md));
char_md.char_props.notify = 1;
char_md.p_cccd_md = &cccd_md;
ble_uuid.uuid = 0x0003;
// BLE_UUID_BLE_ASSIGN(ble_uuid, 0xFF03); // TSPP notify characteristic uuid
attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
sd_ble_gatts_characteristic_add(m_start_handle, &char_md, &attr_char_value, &handles);
co_fifo_init(&tspp_fifo, tspp_buffer, TSPP_BUFFER_SIZE);
}3）服务UUID修改后
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