} while (activePosition < activeString.Length & delimiters. If (activePosition = activeString.Length) Public static string StrTok(string stringToTokenize, string delimiters) Int index = stringToSearch.IndexOf(stringToFind) Public static string StrStr(string stringToSearch, string stringToFind) It aims to work in the same way as the md5sum utility. If i < 32, go to step 2 otherwise, go to step 5. A simple utility that calculates the CRC-32 checksum for each of the given files or for data from standard input. Int index = stringToSearch.LastIndexOf(charToFind) To calculate the checksum, use this algorithm: Set i 0, and set P1 and P2 0 (hexadecimal). Public static string StrRChr(string stringToSearch, char charToFind) Int index = stringToSearch.IndexOf(charToFind) Public static string StrChr(string stringToSearch, char charToFind) Return (charIndex > 0 ? sourceString.Substring(0, charIndex) : "") Public static string ChangeCharacter(string sourceString, int charIndex, char newChar) Pruefsumme_Hex = Pruefsumme_Hex.Substring(0, 2) Pruefsumme_Hex = StringFunctions.ChangeCharacter(Pruefsumme_Hex, 1, ASCII) Pruefsumme_Hex = StringFunctions.ChangeCharacter(Pruefsumme_Hex, 0, ASCII) For example, the sum 3f9hex will result in “?9”. The results (ASCII ‘0’ to ‘?’) represent the 2- character checksum. Quotient and the remainder of the division. Is calculated by adding the values of all transferred bytes from to (both In order to ensure data integrity, a checksum is transmitted with each frame. Each data packet has the following structure:įL 3 Byte Frame length, not used currently, filled with blanks (20hex)įN 2 Byte Frame number, not used currently, filled with blanks (20hex)įI 2 Byte Frame identifier, only ‘E’, ‘I’, ‘D’ and ‘S’ used for 1. Here are a few examples and articles Įach data transfer takes place within a frame. According to this article I can not find Checksum.
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