how to use the checksumdll.lib in LabWindow/CVI to create CRCChecksum();

[KennyT]

Hi All,

Any one know how to use the checksumdll.lib in LabWindow/CVI to create CRCChecksum() ?

Thank you.

[Kelsey_Weaver@NI]

Hi KennyT,

Can you be more specific about which DLL you're referencing? Can you provide any more detail about what you're trying to do?

Thanks

[KennyT]

Hi Kelsey,

I have just finished other project. Now I am back to this one. My project basically asks me to use the  CRCcheck() funtion in the Checksumdll.dll library to do the CRC checking.

Firstly, they asked me to use the checksum application which is Crc32check.exe to generate the number and save it into C:\Checksum.txt.

Then, in the main program, CRCcheck() funtion in the Checksumdll.dll library is called. The returned value is 0 if generated number by this function is matched with number stored in C:\Checksum.txt. and 1 if two numbers are not matched. If you need more infomation, please let me know. Thank you very much

[RobertoBozzolo]

This thread could be of interest to me too.

I cannot find neither the exe nor the dll on my machine (win7pro + CVI various versions) so I suppose they're not part of the OS nor the sdk: who is the producer of these softwares? Can you provide a link?

[Kelsey_Weaver@NI]

Hi KennyT,

Yes, I agree with RobertoBozzolo. We need more information about where these DLL's and exe's are from. It doesn't seem like they are innate in the CVI environment. I can't seem to find much information on them. 

[KennyT]

I took over the project from previous engineer. I am also new to CVI. Therefore I dont know where it comes from. Maybe someone wrote those codes.

[KennyT]

I took over the project from previous engineer. I am also new to CVI. Therefore I dont know where it comes from. Maybe someone wrote those codes.

[RobertoBozzolo]

Do you ave some documentation about that dll?

Have you looked into dll properties searching for vendor name? Maybe you can look int vendorìs site and obtain some help.

Ultimately: are you forced to use that dll or can you use any software to calculate the checksum? There are several CRCs that you can use: provided you know which is the type used you could find an algorithm to calculate the CRC and check an existing one.