Convert hex string to number

[alex.]

As the attached vi, I am tring to convert string(hex) into number(U8), but seems not work.

Any suggestion, thanks.

[ABCPrograms]

Alex,

isn't this what you're looking for?

[ABCPrograms · Accepted solution]

Now you have 2 solutions :

[Omar_II]

What does your "hex string" look like? Is it human readable or it the raw bytes?

Raw bytes, then do as ABCPrograms

If you have a two byte string that represent a human readable hex number 0-255 (00 to FF) like "1A"?

Then

[altenbach]

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@alex. wrote:

As the attached vi, I am tring to convert string(hex) into number(U8), but seems not work.

Any suggestion, thanks.

---

The question is not clear, because "hex" is very ambiguous. Please put a typical string inside the string control and make it the default, resave, and attach once more. Then tell us what result you expect.

How many bytes are in the string?

• If it is one byte of a binary string, typecast it to U8. (It would be silly to go to a byte array)
• If it is two bytes of a hexadecimal formatted string (exclusively containing characters 0..F), scan it using %02x format.
• If it is more than two bytes, you need to provide us with more information.

[Hong.Zhang@agresearch.co.]

Hi All

I am trying to converter 4 bit hex string to number. I know the right results. But I do not know how converte. Please see the attached vi

Please help me.

Thanks

[GerdW]

duplicate post, continue here…

Hong: What's the point of creating 3 identical posts in 3 different threads?

[dadest100]

Hi Alex, 

But how to convert the unsigned byte array into a decimal number? I think that was the question. 

Cheers

[GerdW]

Hi dadest,

how to convert the unsigned byte array into a decimal number? I think that was the question. 

Simple answer: Just display that U8 array in an array indicator. Set the display mode to decimal.

More complex details:

How do you want to display your U8 array?

Do you need any special conversion?

Can you provide an example with some input data and expected result?

[dadest100]

Hi GerdW, 

Thanks for the reply. Yes, I can just display as decimal but the thing is that I want to be able to use that data for calculations.

For example, the maximum output of my circuit is 1.3V that corresponds to 0514 (HEX) which I am reading using Bluetooth LE.

So if I read 025C (HEX), that corresponds to 604dec and that turns out to be 0.604mVolts. I want to be able to continuously read this voltage and display it as a waveform. 

Cheers.