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Serial port component, ComDrv32 vs SerialNG

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For a long time I have used the SerialNG component provided by Domis 
(http://www.torry.net/authorsmore.php?id=3670), and I was able to get it to 
work well for my application, but I had to do some tricky coding, such as 
setting a critical section, and saving incoming data to a separate buffer 
which was then used for error checking and data processing. It is an 
integral part of two of my products, and sometimes I still get errors, but 
they are more likely caused by the USB serial port driver. I'm using a 
Silicon Labs CP2103 USB device.

Now I am working on another project, and I'm just reading a string of 
comma-separated text data with CRLF after each line. The line is about 30 
characters and I'm transmitting at 9600 baud, 1 stop bit, no parity, and no 
flow control. These lines are transmitted every 300 mSec. I was able to use 
Hyperterm to verify that the data can be received and displayed accurately. 
Hyperterm is a problem on Win7 because you can't reload the HT files and 
must re-enter the communication parameters, but that's just an annoyance.

But when I made a simple terminal program using D4 and the SerialNG 
component, I would get errors where it would miss characters and even entire 
sequences, and I was able to get some improvement (or break it completely) 
by fiddling with the cluster size and receive character timeouts. I was 
parsing the incoming data and using the memo.strings.add method to display 
each line when I detected a CRLF. So I thought maybe it was unsafe to do 
this from the receive cluster event processor. The demo seemed to work, but 
it is not a simple terminal and it also displays data as hex, with a 
date-time stamp.

So, I downloaded and installed ComDrv32 
(http://www.torry.net/pages.php?id=198), and confirmed that its terminal 
demo received and displayed the data properly, and I incorporated it in my 
program and it works perfectly well, without any "fiddling". I had a few 
problems installing the component and I had to restart D4, but then it 
seemed to compile and run fine.

Does anyone have experience with either of these components? Or recommend 
another? I may try a new version of my Ortmaster application with the 
ComDrv32 component. If I can do it more simply, I will be happy. KISS is 
wonderful!

Thanks,

Paul 

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Thread

Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@peschoen.com> - 2012-05-26 20:27 -0400
  Re: Serial port component, ComDrv32 vs SerialNG Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> - 2012-05-26 21:08 -0400
  Re: Serial port component, ComDrv32 vs SerialNG "S.G" <S.G@none.special.ch> - 2012-05-27 12:44 +0300
    Re: Serial port component, ComDrv32 vs SerialNG Marco van de Voort <marcov@turtle.stack.nl> - 2012-05-27 20:40 +0000
      Re: Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@peschoen.com> - 2012-05-27 22:29 -0400
        Re: Serial port component, ComDrv32 vs SerialNG "S.G" <S.G@none.special.ch> - 2012-05-28 08:55 +0200
          Re: Serial port component, ComDrv32 vs SerialNG Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> - 2012-05-28 11:08 -0400
          Re: Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@peschoen.com> - 2012-05-29 00:31 -0400
            Re: Serial port component, ComDrv32 vs SerialNG Marco van de Voort <marcov@toad.stack.nl> - 2012-05-29 07:34 +0000
            Re: Serial port component, ComDrv32 vs SerialNG "S.G" <S.G@none.special.ch> - 2012-05-29 11:09 +0200
              Re: Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@peschoen.com> - 2012-05-29 06:20 -0400
                Re: Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@peschoen.com> - 2012-05-29 08:35 -0400
                Re: Serial port component, ComDrv32 vs SerialNG Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> - 2012-05-29 11:43 -0400
                Re: Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@peschoen.com> - 2012-05-30 03:10 -0400
                Re: Serial port component, ComDrv32 vs SerialNG Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> - 2012-05-30 11:01 -0400
    Re: Serial port component, ComDrv32 vs SerialNG "P E Schoen" <paul@pstech-inc.com> - 2016-08-18 19:50 -0400

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