BLE_UUID16_DECLARE宏用于定义16位UUID，但在某些情况下，编译器会产生错误或无法编译通过。为避免这些问题，可以使用以下方法定义UUID：

#define MY_SERVICE_UUID             {0x00, 0xab, 0xcd, 0xef, 0x12, 0x34, 0x56, 0x78,\
                                     0x90, 0xab, 0xcd, 0xef, 0x12, 0x34, 0x56, 0x78}

static const uint8_t MY_CHAR_UUID[]      = {0x00, 0xab, 0xcd, 0xef, 0x12, 0x34, 0x56, 0x78,\
                                           0x90, 0xab, 0xcd, 0xef, 0x12, 0x34, 0x56, 0x78};

在上述代码中，MY_SERVICE_UUID和MY_CHAR_UUID是用于定义服务和特征UUID的常量数组，每个UUID由16个字节组成。

定义完UUID之后，可以在服务和特征的定义中使用它们：

static uint32_t my_service_init(void)
{
    [...]
    ble_uuid_t        service_uuid;
    ble_uuid128_t     base_uuid = {MY_SERVICE_UUID};
    
    service_uuid.uuid = 0x1234;        // 16-bit UUID of the service
    service_uuid.type = BLE_UUID_TYPE_VENDOR_BEGIN;
    err_code = sd_ble_uuid_vs_add(&base_uuid, &service_uuid.type);
    VERIFY_SUCCESS(err_code);

    err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &service_uuid, &p_my_service->service_handle);
    VERIFY_SUCCESS(err_code);

    ble_uuid_t        char_uuid;
    ble_uuid128_t     base_uuid = {MY_CHAR_UUID};
    
    char_uuid.uuid = 0x5678;           // 16-bit UUID of the characteristic
    char_uuid.type = BLE_UUID_TYPE_VENDOR_BEGIN;
    err_code = sd_ble_uuid_vs_add(&base_uuid