syntax = "proto3"; //IAP,即In Application Programming,IAP是用户自己的程序在运行过程中对User Flash的部分区域进行烧写。 message IAP_struct_define { int32 Total_Bytes = 1;// all the received data; int32 NextCodeVrsion = 2;//the New upgrade Version of the Project int32 UtcTime=3;//Udgrade Time int32 UpgradeSucceeded=4;// };