actually i m working on labview programming..my sub vi is working but when I use it in main vi its not working.. i know its the problem of dataflow but I could not find the solution to my problem..please anone help me out
You have made a common mistake and one often discussed here. You are calling a subVI with a while loop that can only be stopped by clicking on the front panel's 'Stop' Boolean. Since you do not make the front panel visible so the button can be clicked, there is no way for the subVI to finish and return. No point at all in having a while loop and no point at all in configuring the serial port each time the subVI is called.
