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binky123 Expert
Joined: 14 Feb 2004 Posts: 1292
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Posted: Thu Mar 08, 2018 5:08 pm Post subject: |
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RealTerm can be used to control RTS, CTS and DTR. Perhaps try toggling the lines and see if there is a change in voltage. Perhaps these cables are soldered incorrectly and are wired to a different line. |
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3FG Expert
Joined: 19 May 2009 Posts: 3367
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Posted: Thu Mar 08, 2018 5:17 pm Post subject: |
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RealTerm can set a Break condition, which is needed to initiate connection with JP1.2/1.3 remotes. Checking it with a voltmeter will show if the interface can assert a break. If it can this will also unambiguously identify the TxD line. |
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mathdon Expert
Joined: 22 Jul 2008 Posts: 4523 Location: Cambridge, UK |
Posted: Fri Mar 09, 2018 1:23 pm Post subject: |
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This is just to confirm that the ChipPartner cable that I ordered on Jan 31 works perfectly, and has LEDs as an added bonus. _________________ Graham |
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The Robman Site Owner
Joined: 01 Aug 2003 Posts: 21237 Location: Chicago, IL |
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mdavej Expert
Joined: 08 Oct 2003 Posts: 4501
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Posted: Fri Mar 09, 2018 1:57 pm Post subject: |
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binky123 wrote: | RealTerm can be used to control RTS, CTS and DTR. Perhaps try toggling the lines and see if there is a change in voltage. Perhaps these cables are soldered incorrectly and are wired to a different line. | I suspected that too. I opened mine up and confirmed the connections are correct, at least according to what's printed on the board. |
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binky123 Expert
Joined: 14 Feb 2004 Posts: 1292
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Posted: Fri Mar 09, 2018 7:19 pm Post subject: |
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mdavej wrote: | binky123 wrote: | RealTerm can be used to control RTS, CTS and DTR. Perhaps try toggling the lines and see if there is a change in voltage. Perhaps these cables are soldered incorrectly and are wired to a different line. | I suspected that too. I opened mine up and confirmed the connections are correct, at least according to what's printed on the board. |
ok. sounds like a clone or a PL2303. I wonder if we could salvage some use out of them. So confirming a Break signal, TX=0v, might be useful. Seeing if we could control any of the other lines would be helpful too. |
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