Research and System Design of Remote Comparison Method for Embedded Device Files

Research and implement the remote comparison method of embedded device files. Through the file communication between the remote master station and the embedded device, the two randomly record and remove the content of the same predetermined length, and calculate the check code of the remaining part of the file. The normality of the file in the embedded device is determined by comparing the content of the predetermined length stored locally by the remote master station with the check code. By changing the content of the file, the result of each check is different, which can prevent the device from remembering the original check code and reduce the communication data at the same time.