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List:       snap
Subject:    Re: [SNAP] RTS CTS flow control on serial1
From:       Dan LaRue <dlarue () plumsoftware ! com>
Date:       2007-03-30 14:17:12
Message-ID: 7.0.1.0.2.20070330085951.04fe6300 () plumsoftware ! com
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Giorgio,

Seems like you are doing it correctly.  If you scope the TX pin, I 
assume you see bytes going out.

To get some clues, you can not send bytes out TX and try direct 
control of RTS using SerialPort.setRTS() and looking at it with your Oscope.

My other thought is somehow you have to configure OUT1, but I can't 
find anything on that in the doc.  So it seems once you do 
SNAP.setRTSCTSFlowControlEnable(1,true), that the pin becomes a 
dedicated RTS output.

Sorry, I can't be more helpful.
Dan LaRue

At 05:40 AM 03/30/07, you wrote:
>I am studying a modification on my socket board to enable RTS/CTS flow
>control on serial1 port.
>
>In my application I configure the serial1 port as follows:
>
>sp = (SerialPort) CommPortIdentifier.getPortIdentifier("serial1").open("RS",
>5000);
>
>SNAP.setRTSCTSFlowControlEnable(1,true);
>
>sp.setFlowControlMode(SerialPort.FLOWCONTROL_RTSCTS_OUT |
>SerialPort.FLOWCONTROL_RTSCTS_IN);
>
>sp.setSerialPortParams( baud, databits, stopbits, parity);
>
>Then I link the oscilloscope probe to the RTS SNAP pin (pin number 71) to
>analyze it, but during bytes trasmission it is always 0 Volt.
>
>What I got wrong?
>Please I need an answer very quickly, before Monday bu better within
>today...
>
>Regards.
>
>
>_______________________________________________
>Snap mailing list
>snap@imsystech.com
>http://www.imsystech.com/support/maillist.htm

-- 
Dan LaRue                               Plum Software Associates
Senior Systems Engineer          94 Northern Blvd.
dlarue@plumsoftware.com         Newbury, MA 01951
Phone: 978.590.8555                 Fax: 978.463.0510
www.plumsoftware.com

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