with an external computer, you can spy both send and receive data using two serial port (each wired on receive input and ground only). I remember to have used a program for serial monitoring using this technique (under DOS), but I cannot recall the name.
Claude Le 23.04.2015 18:15, Jon Elson a écrit : > On 04/23/2015 04:00 AM, Gregg Eshelman wrote: >> On 4/22/2015 8:10 PM, linden wrote: >>> May be easer to make a physical sniffer cable that "T's" in to the com >>> you are trying to sniff and connect the other end to a laptop running >>> linux and log with cutecom or similar terminal program. I had a fancy >>> cable made that split the transmit and receive line split to 2 separate >>> 9pin sub Ds and was able to log data going in each direction separately. >>> Was quite handy at the time. >> Got a schematic for that? Wouldn't there need to be some sort of >> isolation to avoid interference from the sniffing PC? >> > No. People have done this for ages. Just tie ground and > either TX or Rx from the system to be observed to > ground and Rx of the monitoring computer. If you are > concerned about isolation, you could use a laptop, > if you have one with a serial port. But, this is done all > the time, RS-232 is a high-voltage signalling scheme, and > very immune to noise. > > Jon > > ------------------------------------------------------------------------------ > BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
