Serial communication checking and correction method

[0027] Embodiment 1 Claim 1

[0028] see figure 1 . The verification and error correction method of the serial port communication of the present invention adopts the ECC (Error Checking and Correction, ECC for short) verification and error correction method to realize the verification and error correction of the serial port communication, and the verification and error correction process includes:

[0029] 1) The serial port data sender saves a frame of serial port data to the sending buffer;

[0030] 2) Calculate the ECC check code of the data frame in the serial port sending buffer:

[0031] (1) Calculation column validation;

[0032] (2) Calculation row verification;

[0033] (3) Obtain the ECC check code at the sending end;

[0034] 3) The serial port data receiving end saves the received serial port data to the receiving buffer, and at the same time saves the received ECC check code of the sending end to the ECC buffer;

[0035] 4) Calculate the ECC check code of the d

[0041] see figure 1 , figure 2 , image 3 . The verification and error correction method of the serial port communication of the present invention adopts ECC verification and error correction, and the process of the verification and error correction includes:

[0042] 1. Calculate the sending end ECC:

[0043] Column validation is as follows:

[0044] C0=B0^B2^B4^B6:

[0045] Indicates that the B0 bits of byte 0~byte 255 in the first column have a total of 256 bits, and then XOR with the B1 bit of the 256 bytes in the second column, and then XOR with each bit of the 4th and 6th columns. Or, in this way, C0 is actually the result of XOR of 256*4=1024 bits. Calculate C1~C5 in the same way.

[0046] The line check is as follows:

[0047] L0=BY0(B0^B1^B2...B7)^BY2(B0^B1^B2...B7)^BY4(B0^B1^B2...B7)...BY254(B0^B1^B2...B7)

[0048] L0 is the polarity of the 0, 2, 4, 6, ... 252, 254 bytes

[0049] L1----1, 3, 5, 7...253, 255

[0050] L2----0, 1, 4, 5, 8, 9.....252, 253 (proce