什么是校驗和

是一個算法，將一串數據累加，得到一個和。

MATLAB程序

function c_use = Checksum(packet)
%Checksum 求校驗和
%   此處checksum提供詳細說明checksum = 0;for i = 1:length(packet)value = hex2dec(packet(i));checksum = checksum + value;
endc_hex = dec2hex(checksum);
c_use = c_hex(3:4);end

A = "12 12 83 5F 00 71 03 00 00 C8 92 8B D0 0D 00 00 00 00 03 66 00 B1 FF 00 " + ..."00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 12 00 D2 03 0D 00 " + ..."D2 03 00 00 00 00 00 00 C4 09 00 00 00 00 00 00 C4 09 00 00 00 00 00 00 00 00 " + ..."01 18 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 " + ..."00 00 00 00 00 00 00 57 63 5C 63 00 00 12 00 17 09 00 0D 7A D4 03 32 00 00 00 00 00 " + ..."00 00 00 32 13 00 00 00 EC FF 00 00 10 00 00 1A 00 00 00 19 00 00 00 00 00 00 00 00 C8 " + ..."00 00 58 6D 00 00 00 00 00 00 00 00 00 00 79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 " + ..."00 00 00 00 00 00 00 00 00 00 00 00 71 03 00 00";PACK = regexp(A,'\s+','split');
c_use = Checksum(PACK);