General Linux and Windows Library Usage

[Bob Vandette]

> On Mar 6, 2018, at 3:22 PM, Allen Myers <allen at aemyers.com> wrote:
> 
> Bob, ​Thank you for your input​!
> 
> I'm actually attempting to use jSerialComm right now. However I seem to
> have some problems with how it manages threads. jSerialComm starts a
> separate thread to manage a listener for the native libraries it uses. But
> it doesn't seem to handle thread interruptions properly.
> 
> https://github.com/Fazecast/jSerialComm/blob/master/src/
> main/java/com/fazecast/jSerialComm/SerialPort.java#L1048
> 
> It also seems to have random Thread.sleep calls periodically in it's code
> base that I'm not sure underline a solid understanding of how to
> communicate with native libraries properly.
> 
> Perhaps I'm still doing something wrong in my code, but I don't seem to be
> able to close a jSerialComm connection and then reopen it right after
> without it closing itself again shortly after for no apparent reason. Maybe
> I just need to accept I shouldn't close it. :)
> 

As I stated, I have no experience with this library.  Have you tried to use their
examples?  It looks like their default mode of operation is non blocking
mode.  This is why they require sleeps.  It looks like you can open a serial
port in blocking mode to avoid this issue.

SerialPort comPort = SerialPort.getCommPorts()[0];
comPort.openPort();
comPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_BLOCKING, 1000, 0);

> Or maybe I should change my development/test environment into a Linux
> platform and use Device I/O. :) This Device I/O library looks very well
> designed. I really want to use it, but I'm so entrenched in a Windows test
> environment right now, it's hard to give all that up for one library…

Only you can decide if this is worth it.

Bob.

> 
> On Tue, Mar 6, 2018 at 12:15 PM, Bob Vandette <bob.vandette at oracle.com>
> wrote:
> 
>> The Device I/O library only supports Linux.  It should work on any Linux
>> platform and not be restricted to embedded specific platforms as long as
>> you configure it properly.
>> 
>> I used the javax.comm package on Windows years ago but
>> this support was EOL’d by Sun many years ago.
>> 
>> I did a quick search and came up with this package that claims to do
>> what you are looking for.  I have no experience with this technology and
>> this is not an endorsement of jSerialComm by Oracle.  Use at your own risk.
>> 
>> http://fazecast.github.io/jSerialComm/
>> 
>> Bob.
>> 
>> 
>> On Mar 6, 2018, at 1:18 PM, Allen Myers <allen at aemyers.com> wrote:
>> 
>> I've been trying to find a reliable serial library to act as an interface
>> to a USB connection to a UART on an Arduino. This Device I/O library looks
>> brilliant. I'm just not sure if I can use it on a full Linux server (Dell
>> server). Is this only designed to be run on embedded type platforms? Could
>> it interface with a /dev/tty device on a standard Linux server?
>> 
>> My production environment is Linux, but my test environment is Windows. If
>> possible, how would I go about getting natives built for Windows?
>> 
>> 
>>