Opening a Channel

From Phidgets Support
Jump to: navigation, search
 Phidget Programming Basics: Opening a ChannelTOC Icon.png Table of Contents

Nav Back Arrow.png Nav Back Hover.png WhiteTab1.png HoverTab1.jpg WhiteTab2.png HoverTab2.jpg WhiteTab3.png HoverTab3.jpg WhiteTab4.png HoverTab4.jpg WhiteTab5.png HoverTab5.jpg GreenTab6.png WhiteTab7.png HoverTab7.jpg WhiteTab8.png HoverTab8.jpg WhiteTab9.png HoverTab9.jpg WhiteTab10.png HoverTab10.jpg WhiteTab11.png HoverTab11.jpg WhiteTab12.png HoverTab12.jpg WhiteTab13.png HoverTab13.jpg WhiteTab14.png HoverTab14.jpg WhiteTab15.png HoverTab15.jpg WhiteTab16.png HoverTab16.jpg Nav Next Arrow.png Nav Next Hover.png

6 . Opening a Channel

After you have created and addressed a channel, you need to open it to begin the process of attaching the software channel to a physical channel.

For example:



Phdiget_openWaitForAttachment((PhidgetHandle)ch, 5000);

In Java and C# open() is overloaded. In other languages, you would use openWaitForAttachment(5000) to perform the same function.

The openWaitForAttachment() function will hold the program until a Phidget channel matching the one you specified is attached, or the function times out. There is a similar function called open() that will do the attachment process in the background, and allow your program to continue before the channel has been attached.

The open() and openWaitForAttachment() functions only begin the process of matching the channel handle you created to a channel of a Phidget device, and do not actually open the Phidget itself. An open channel that does not match any Phidget channels at first can still attach to a matching channel that is plugged in long after it was first opened.