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Tag: CRC

CRC test vector of crc16 (ccitt)

Does anyone know some CRC test vectors of CRC16-CCITT?

I don’t have a trusted CRC implementation. I either need to test someone’s implementation or test my own implementation. (For CRC32, I u

October 17, 2021By Simo Os Theory CCITT, CRC, CRC16, test, vectorLeave a Comment

How to avoid creating .crc files when creating parquet floors

I am using a parquet frame to write parquet files
I used this constructor to create a parquet writer –

public class ParquetBaseWriter extends ParquetWriter {
public ParquetBaseWriter(Path fi

October 17, 2021By Simo Os Theory avoid, CRC, create, file, floor, How to create, parquet, timeLeave a Comment

CRC32 C realization – does not work

I found this CRC32 implementation on the internet and changed it a bit, but I can’t get it to work. I initialize it and update it on every byte I get from the input , But the hash I get is not what

October 17, 2021By Simo Os Theory CRC, CRC32, inadvertent, realizationLeave a Comment

Missing CRC32 () when building libzip on OSX 10.9

I have downloaded the latest version of libzip, and am currently trying to build it on OSX and fail:

Linking C shared library libzip.dylib
Undefined symbols for architecture x86_64:
“_crc32”

October 17, 2021By Simo Os Theory 10.9, construction, CRC, CRC32, libzip, missing, OSX, timeLeave a Comment

Check and determine the CRC algorithm from the data CRC – embedded application.

I have a set of data protected by a 16-bit checksum and I need to correct it. The checksum locations are known, the exact area where they are calculated and the exact algorithm used to calculate th

October 17, 2021By Simo Os Theory Algorithm, application, check, CRC, data, determination, embedding, program, styleLeave a Comment

CRC-CCITT 16-bit Python manual calculation

Problem

I am writing code for embedded devices. Many solutions for CRC-CCITT 16-bit calculations require libraries.

Possible solutions

The following CRC calculation was found onli

October 17, 2021By Simo Os Theory bit, Calculation, CCITT, CRC, manual, pythonLeave a Comment

BYTE – CRC16 Recommend Java

I have a problem when calculating the CRC-16 implementation of a byte array in java. Basically I am trying to send the bytes to the RFID that starts to write the tag. I can use the mac Check the tc

October 17, 2021By Simo Os Theory byte, CRC, CRC16, Implementation, JavaLeave a Comment

CRC-CCITT standard generates CRC check code

//****************************************** *********************
//Here, the polynomial is generated according to the CRC-CCITT standard. CRC-CCITT is a 17-bit generator polynomial
//G=[1 0001 00

October 17, 2021By Simo Os Theory CCITT, check code, CRC, generated, StandardLeave a Comment

How to determine which CRC used?

If I have a certain number of bytes to transmit serially, how do I determine which CRC to use (CRC8, CRC16, etc., basically how many bits of CRC?) and still have high error detection percentage? Is

October 17, 2021By Simo Os Theory CRC, how to determine, use, whichLeave a Comment

Error detection efficiency (CRC, checksum, etc.)

I have a hypothetical situation of sending data units, each data unit has a kilobyte. The failure rate is very small, but when an error occurs, it is unlikely to be a single Bit errors, and more li

October 17, 2021By Simo Os Theory check, CRC, detection, efficiency, error, etc.Leave a Comment

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