Problem with handling data in serial communication

[mnx]

I am working on UART communication between LabVIEW and my PIC microcontroller.It works absolutely fine with character Txn & Rxn.But I am facing problems in transmiting & recieving hexadecimal nos. through this interface.Firstly, is it possible to transmit & recieve these numbers without ASCII to character conversion & vice versa? and is there any efficient technique to deal with hex nos. written in string controls for transmission?

[Ranjeet_Singh]

Can you please let me know where exactly you are facing problem, and if you are able to send & receive ascii data then you should be able to Tx & Rx hex data also. There should not be any problem with HEX nuimbers.

[johnsold]

Do you have termination characters enabled (the default)? If so, and your data includes a byte which is equal to the termination character, you will have problems.

When transmitting binary (or hex) data, you should use a protocol with fixed message lengths and have termination characters disabled.

The serial communication transmits bytes. It does not care how you display them, what generated them, or whether they represent ASCII or random numbers.

Lynn

[Dennis_Knutson]

If you really want to transmit a hex number, you can use the typecast function or the byte array to string function.

[mnx · Accepted solution]

Hi all,

Thanks for replying...I tried the things you all suggested and finally got the way to communicate with hex nos..:)..More details can be obtained at:

http://digital.ni.com/public.nsf/allkb/6C24F2F07BC23BB78625722800710865

[Dennis_Knutson]

So you did exactly what I told you to do.

[mnx]

@dennis:lol....to be honest yes i did...but i also got this doc while browsing for the same..thank you!!