ADC communiction with UART to Labview

[muscles05]

Is that how you set it up have the byte count at 1, then use match patter to look for "!" then find a match. I have attached the vi code along with pictures.

[Dennis_Knutson]

It's a start. After the read, you do an Equals comparison to the !. If true, stop that loop. Then you would do another read loop with a specific byte count.

You still need to join the bytes. The opposite of your micro code that breaks the adc value into separate bytes. After joining, a typecast can be done to convert to a floating point number.

[muscles05]

Okay so i ran a new code from what you said im not to sure if im doing it right but i set the read buffer string in a equal function and if it is equal to "!" i stop the loop but the loop is not stoping. I am reading one bit at time as you described. check out the code.

[Dennis_Knutson]

The loop will only stop if your special character is detected. Are you sure it's being sent. Are you sure of the format? A quick check is to read something like 6 or 7 bytes and look at the result. According to what you said, at least one of the bytes should be the start character.

[muscles05]

okay i know there data coming in but i dont know what form it is do i need to convert or what so i can find the "!" or is my code wrong for comparing.

[Dennis_Knutson]

You obviously are not sending an ASCII text ! since it is not in the string.

[muscles05]

okay so the conversion problem is with labview cause it coming back in some kind of chinese looking code. I heard there some kind of advanced visa control to be able to covert the data to a reable format so it labview changing the text format.

[Dennis_Knutson]

No, the format does not get changed by VISA. I'm sure the read would look exactly the same if you used another terminal emulation program such as putty. You can, of course, select to view the data as hex but I've already told you that.

[muscles05]

sorry, so how do you view as hex, what function does that.

[Dennis_Knutson]

Go back and reread what I have said. It's a simple right click option.