Re: Com Port Response time measurement

From: Bob O`Bob (filterbob_at_yahoogroups.com)
Date: 03/25/04 

Date: Wed, 24 Mar 2004 19:21:46 -0800

Connie wrote:
>
> I need to measure the time interval between the sending
> message time from Com Port and the requesting return count
> time from 8051. However, it cannot be measured. Could
> any kind person give me any opinion?

Windows is not a real-time OS.
You have little-to-no control over many other things which may interrupt whatever
code you might be running in your attempt to measure something. Reliable precision
any finer than about half a tick (~0.03 seconds) is flatly impossible.

        Bob 

--

Relevant Pages

  • HL7 acknowledgement
    ... In that Orchestration i am using spacify ... later Receive-Send port. ... What is my problem is when my HL7 message is not requesting ...
    (microsoft.public.biztalk.general)
  • Re: svchost.exe
    ... having read the microsoft explanation, ... Depends on what address and port it's going to or requesting. ... If you're on local LAN, ...
    (comp.security.firewalls)
  • Re: DOS issue in XP
    ... I formatted and installed 4 new computers with XP Pro. ... cannot find any config file where it would be requesting any specific ... COM port, but this might be a function or error with XP. ... prompt" (It's not DOS any more, it just seem like it) window. ...
    (alt.os.windows-xp)
  • Re: How to get DHCP IP address renew upon Ethernet link down/up (NDIS_STATUS_MEDIA_CONNECT)?
    ... If the cable is attached to an Ethernet switch ... device plugged into port 1 to that port, then you may not get your packets ... Requesting a different IP address is the wrong ... local DHCP server is going to try hard to keep from changing your IP ...
    (microsoft.public.windowsce.platbuilder)
  • Re: PAC Timing?
    ... When you start a port, the 30 days notice period is deemed to have started ... requesting your PAC on the ...
    (uk.telecom.mobile)