calculate CRC16 (my algoritm)

[Sergiv]

Can you please tell how to calculate the CRC. on this code:

unsigned short CRC16(unsigned short crc, unsigned char byte)
{
unsigned short carry;

carry = 0xFF & ((crc >> 😎 ^ byte);
carry = carry ^ (carry >> 4);
return ((crc ^ (carry << 4) ^ (carry >> 3)) << 😎 ^ ((carry ^ (carry << 5)) & 0xFF);
}

Thank you!

[GerdW]

Hi Sergiv,

you will find a lot of "calculate CRC" threads in the forum! Did you look for and did you check their examples?

Did you know

- you can use boolean logic on integer numbers like U8?

- you can do shifts using "logical shift" function (in the numerics palette)?

Following those two advices it should be easy to convert that C code into LabVIEW/G...

(Can't look at your VI due to the LabVIEW version you use.)

[Sergiv]

thanks for the answer 

I tried to make the example, but I did not succeed.

I never programiroval in C.

resave your vi in version 8.6so, and I ask for your help

[GerdW · Accepted solution]

Hi Sergiv,

I don't claim "it's correct now" but I tried to follow your C algorithm...

Due to upload problems (forum doesn't accept VIs anymore...) I had to change filename from "*.vi" to "*-vi"!

[Sergiv]

thank you

[moderator1983]

---

@GerdW wrote:

forum doesn't accept VIs anymore...

---

When this happened??

I have attached a VI, couple of minutes back...!! 

[GerdW]

Hi moderator,

it happened at the time given in the message header...

This happens for me since some days and I already complained in the "Forum feedback" thread (as several other people too)!