Re: [Xastir] Xastir B/T expert?

Sun, 20 Mar 2011 08:31:57 -0700

Yes, that matches my experience. It's not the software or the computer requiring the handshaking signals, is the bluetooth to serial adapater at the radio end. If it doesn't see the signals, it won't put out the data regardless of what the PC may have sent to it over bluetooth. It'll receive and pass on to the PC, but anything from the PC never comes out the transmit data on the bluetooth adapter.
Not all BT adapters, but some (I've got 3 or 4 different ones here and don't remember which requires what because I always wire the connectors to provide the loopback so I can plug anything into it). 

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 3/20/2011 10:39 AM, Kurt Savegnago wrote:

The only followup question I would have is I plug the same exact
3 wire DB9 cable from the Kenwood to a wired USB/serial converter and with the 
rig, in Packet mode, it runs perfectly both ways.  Transmit command
messaging whatever.

So it might be a problem with the IO Gear GBS 301?

http://www.iogear.com/product/GBS301/

Darn, receive only.  Like I said before. the GBS301 pairs fine with the laptop 
with the stubby GBU421 dongle and the packets are received and plotted just 
fine from the D7A(g).  What I have trouble understanding is that same serial to 
DB9, three wire cable from the Kenwood works both ways with a wired serial to 
USB converter?

Is the deficiency in the the little dongle?

http://www.iogear.com/product/GBU421/

I have one of those Windows CE GPS units coming that Lynn has mentioned before 
that is supposed to be B/T capable.  I'll see if it works both ways with the 
little GBU421 when it comes.  Thanks for all the help.

                                Kurt Savegnago KC9LDH


--- On Sun, 3/20/11, Alex Carver<[email protected]>  wrote:


From: Alex Carver<[email protected]>
Subject: Re: [Xastir] Xastir B/T expert?
To: "Xastir - APRS client software discussion"<[email protected]>
Date: Sunday, March 20, 2011, 1:48 AM
Lynn is correct, the D7A does not
provide any form of handshaking at all.  It has only a

three wire connection (transmit, receive, and ground). 
I believe the IOGear does indeed need RTS/CTS to work

correctly.

--- On Sat, 3/19/11, Lynn W. Deffenbaugh (Mr)<[email protected]>
wrote:


From: Lynn W. Deffenbaugh (Mr)<[email protected]>
Subject: Re: [Xastir] Xastir B/T expert?
To: "Xastir - APRS client software discussion"<[email protected]>
Date: Saturday, March 19, 2011, 9:53 PM
Have you tried tying the handshaking
wires back on the radio side of the
bluetooth?  I've had some adapaters that will not
transmit data out the
RS-232 side unless it sees the proper handshaking,
DTR->DSR->CD,
RTS->CTS.  It's almost certain that the radio's
interface cable doesn't
provide the handshaking.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows

Mobile

and Win32

On 3/19/2011 9:28 PM, Kurt Savegnago wrote:

Hi,

     My first Bluetooth foray with Xastir has

been pretty much a success but

I have a quick and simple question to ask of the

cognescenti.

Heck it's my first try with the mode I'm

embarrassed

to say

     I plugged in a stubby (and cheap) USB

Dongle, a Broadcom BCM9204DG-CL1ROM into my Slack

laptop and

connected a serial cable from the computer jack of a

Kenwood

D7A(g) and plugged the DB9 into an IOGear GBS301

serial-

to-B/T device. Ran it in packet mode.

It pairs fine with the computer with BlueZ and

the

data packets come in over Xastir (and APRSIS32 with
WINE)just as plain as can be. (Minicom too.)

Only issue is that no commands get to the D7A(g)

from

Xastir to transmit.  I'm using the same

initialization

file that works with a direct Serial-USB cable except

with

the B/T, Xastir sees it as /dev/rfcomm0 instead of
/dev/ttyUSB"X"

I did a sudo chmod 777 /dev/rfcomm0 and like I

said it

receives just fine.

I am suspecting that maybe that stubby dongle is

only

a one way connection device to the laptop/Xastir?

The

IOGear GBS301 is in Slave mode.

If that el cheapo ($12.00) Dongle on my laptop is

the

wrong device, what would be a good Bluetooth/USB

device I

can plug into the laptop for two-way communications

via

bluetooth to that IOgearGBS 301?

A $12.00 mistake I can live with. :-)



            
    Kurt KC9LDH

http://aprs.fi/?call=PARS&mt=roadmap&z=11&timerange=3600

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