You need something on it like a loopback plug

by (Login burger2227)
R

You'll need a DB9 female plug jumpered as shown below. It will loop back to the COM port so you can read what you send:


[linked image]

Posted on Oct 2, 2011, 5:12 PM

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Response TitleAuthor and Date
How to test com port is open in qb64Docfxit on Oct 2
 You can't test it with nothing on it on Oct 2
 Re: How to test com port is open in qb64 on Oct 3
  What does that tell you? on Oct 3
   Re: What does that tell you? on Oct 3
    Well I got nothing in QB64 until I changed it to COM2 on Oct 3
  Re: How to test com port is open in qb64Docfxit on Oct 4
   Try this: on Oct 4
    Thanks for the codeDocfxit on Oct 4
     Is the error coming up as 68 with QB64? on Oct 4
      Re: Is the error coming up as 68 with QB64?Docfxit on Oct 4

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