Data communication framing method based on character escape

Abstract

The invention discloses a data communication framing method based on character escape. The data communication framing method comprises the following steps: S1, caching original data; s2, initializingdata framing to obtain a data set with the frame structure; wherein the frame structure is composed of a frame header, data communication content, a fixed value, a CRC checksum, a fixed value, lengthinformation, a fixed value and a frame tail in sequence; S3, verifying the data communication content by adopting a CRC verification mode, and calculating a checksum; S4, traversing the data communication content, and performing character escape processing on the data which is the same as the frame tail; and S5, correcting the length information of the data set, and updating the length informationof the data frame to be sent. According to the data communication framing method based on frame tail character escape, it can be guaranteed that the frame tail is a unique identifier in the whole data frame, the situation that the frame tail is misjudged is avoided, the CRC checksum of the received data is calculated, the effectiveness of the data is verified, and the reliability of data communication can be remarkably improved.

Description

technical field [0001] The invention belongs to the field of data communication and relates to a data communication framing method based on character escape. Background technique [0002] Data communication is a two-way data communication process, which is widely used in various electronic devices. Regardless of the data sending process or the data receiving process, as the number of communication bytes increases, the frame header or frame tail, as a specific identifier of a complete data frame, is likely to overlap with the data in the data area, which can easily cause data reception. Misjudgment in the process, which will cause abnormal data communication. [0003] By searching for relevant public literature on data communication, there are mainly "C language escape character analysis", "Analysis of escape characters", etc. escape character refers to a special expression of character constants in C language Form, used to represent the control characters and format charac...

AI Technical Summary

Problems solved by technology

As the number of communication bytes increases, the frame header or frame tail, as a specific identifier of a complete data frame, is likely to overlap with the data in the data area, which can easily cause misjudgment during data reception, resulting in abnormal data communication The problem

To this situation, the prior art does not have a good solution

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