That certainly prevents the port from blocking.  The interface in xastir 
returns as 'up' but it doesn't appear to be reading packets off the TNC in the 
view-incoming data window.  Looking in putty it still shows the incoming 
packets.  So its not quite fixed yet.
 
 
 

From: "Jason KG4WSV" <[email protected]>
 
Try the /dev/cu.whatever device special file.

It’s been a few years but when I hit the same problem (well, Kermit not putty) 
switching to cu did the trick.

-Jason

> On Feb 7, 2021, at 8:44 PM, Eric Chamberlain <[email protected]> wrote:
>
> I've been trying to configure an interface to read the tinytrak4 TNC, which 
> is supposed to operate as KISS according to their docs. When I run PuTTY on 
> the /dev/tty.usbserial-1430 port I can see packets coming in from a test 
> transmitter. I close putty and open xastir so the port isn't blocking. When I 
> go to start the TNC interface, in mac it hangs without messages in the 
> terminal window. On the putty it doesn't hang but there's nothing. There are 
> never incoming packets from the view data window. Unfortunately, Byonics say 
> they don't know much about xastir. I've tried this both on my mac and my 
> raspberry. The cable setup works for programming and PuTTY, so I don't think 
> its that or drivers. I think it comes down to settings. Is there anything I 
> can try?
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