typedef enum {
  VM_BT_SPP_SECURITY_NONE = 0x00,
  VM_BT_SPP_SECURITY_AUTHENTICATION = 0x01,
  VM_BT_SPP_SECURITY_AUTHORIZATION = 0x04,
  VM_BT_SPP_SECURITY_ENCRYPTION = 0x10,
  VM_BT_SPP_SECURITY_ALL = 0x7FFFFFFF
} VM_BT_SPP_SECURITY_LEVEL;