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Re: A Byte out of USB
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Re: A Byte out of USB


  • Subject: Re: A Byte out of USB
  • From: Dave Camp <email@hidden>
  • Date: Wed, 12 Mar 2008 13:51:10 -0700

On Mar 12, 2008, at 1:35 PM, R T wrote:

This may be the wrong list to ask this question, if so
maybe you can guide me.
Back in the days of OS 9 I wrote a block of code that
sent a byte of information out the serial port. The
byte went to a microcontroller of a machine. At the
time I wrote it in Hypercard.
I want to use  Xcode/Applescript to send this same
byte of information out the USB port from my new
MacBook running 10.5.2.
Is there a sample block of code somewhere that shows
how to accomplish sending 1 byte out a USB Port?

USB doesn't work like that. You can learn more about USB at <http://www.usb.org >.


If what you really need is a serial connection to a external RS232 device you should purchase a USB to RS232 adaptor (KeySpan makes some nice devices - <http://www.keyspan.com> ). Then the question becomes: how do I communicate with a serial port? I think there is some sample code on the Apple dev site or pretty much any Unix example will probably work. KeySpan also has sample code on their Support page.

Dave
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  • Follow-Ups:
    • Re: A Byte out of USB
      • From: "Hank Heijink (Mailinglists)" <email@hidden>
References: 
 >A Byte out of USB (From: R T <email@hidden>)

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