Termination character finding problem

[crossrulz]

Ok, let's take a step backwards.  What exactly are you sending to your computer?

[Yamaeda]

Yes, termination character comes after each string.
123.5\n
421.43\n
5543.23\n and so on.

[Haris115]

OKay, I am receiving data such as 123, 24,10 001,..............................990, 1023 and son on.

If I append termination character 0xA at each end of string, will the termination letter effect the string or mix the contents of string because it might be that string content will match to termination letter contents??????

[Haris115]

I am sending that data such as 123, 239, 457, 789, 430, 782, so on. But after using convert circuit that I make myself will convert the decimal to ASCII. 

[Dennis_Knutson]

And whether or not multiple values or a single value is sent is just irrelevant. The only VISA Read would be in a loop so it would be constantly reading and you would simply be appending new data to the old if that was necessary.

[Haris115]

@ Yamaeda

OKay, I am receiving data such as 123, 24,10 001,..............................990, 1023 and son on.

If I append termination character 0xA at each end of string, will the termination letter effect the string or mix the contents of string because it might be that string content will match to termination letter contents??????

[Dennis_Knutson]

How can you possibly think that the ASCII characters for 0-9 will be confused with the ASCII line feed character? If you are randomly assigning your numerics to random ASCII values, then you need to rethink what your c code is doing.

[crossrulz]

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@Haris115 wrote:

@Yamaeda

OKay, I am receiving data such as 123, 24,10 001,..............................990, 1023 and son on.

If I append termination character 0xA at each end of string, will the termination letter effect the string or mix the contents of string because it might be that string content will match to termination letter contents??????

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This is why I am asking what you are sending.  BE VERY SPECIFIC.  Are you sending ASCII characters the print to be numbers (ei: "0") or are you sending binary data, one character for each number (ei 0x0")?

And you are apparently getting data from something else.  What is the protocol the instrument is using?

[Haris115]

The device is sending data in numeric such as 230, 340 so on.

The my device will convert random numeric data to ASCII for compatible in Pc.

[crossrulz]

So you are recieving 2 bytes from the instrument and converting those into ASCII characters.  I say 2 bytes since you want a value greater than 255.  So after each converted number, you add your termination character.

So the instrument sends binary 230 (0x00E6).  You take that and change it to "230\n" (using C notation there).  Then in LabVIEW, you just read something like 10 characters (yes, that is more than you will actually read, that is on purpose).  The VISA Read will return to you "230".  You can do whatever you want with that data.