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Re: Serial bridge availability
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Yes, for PC (win/linux -- and osx in theory but not tested in practice),
and
for rabbit microcontroller.
I guess the next question will be where can you download them from -
unfortunately that is contingent on me bringing my server back on line
following a house move.
I think someone (Kevin? Edward?) may have done something with lantronix
too.
Patrick
2010/1/16 Neil Wrightson <neilw@xxxxxxx>
>
>
> So a serial bridge does not exist then?
>
>
> Regards,
>
> *Neil Wrightson.*
>
> ------------------------------
> *From:* xAP_developer@xxxxxxx [mailto:
> xAP_developer@xxxxxxx] *On Behalf Of *Neil Wrightson
> *Sent:* Thursday, 7 January 2010 6:29 AM
>
> *To:* xAP_developer@xxxxxxx
> *Subject:* RE: [xAP_developer] Serial bridge availability
>
>
>
> Hi Patrick,
>
> You hit the nail on the head.
> I'm looking for a serial bridge to connect various AVR
microcontrollers.
>
> 1. Do you have the PC based IP network to serial port application?
> Would I be able to down load this from you?
>
> 2. On the Lantronix side, how did you set up this device? Did you
somehow
> pass all Ethernet xAP traffic to the RS232 side and also how did you
send it
> from the RS232 back to the Ethernet? As in how did you tell the
Lantronix
> device that this is the start of a xAP message, buffer until I have
sent you
> the full message and then transmit in a whole UDP packet.
>
>
> Regards,
>
> *Neil Wrightson.*
>
> ------------------------------
> *From:* xAP_developer@xxxxxxx [mailto:
> xAP_developer@xxxxxxx] *On Behalf Of *Patrick Lidstone
> *Sent:* Wednesday, 6 January 2010 10:20 PM
> *To:* xAP_developer@xxxxxxx
> *Subject:* Re: [xAP_developer] Serial bridge availability
>
>
>
> I think the definition of serial bridge here is a serial based (RS232
or
> RS485) device that participates in a 'conventional' UDP
broadcast/ethernet
> xAP network.
>
> Typically this is achieved either using either a PC - and passing xAP
> messages from the IP network to serial port and vice versa, or using
an
> embedded device such as the lantronix IP to serial converters. I have
> implemented both at various points... it's useful for integrating
really low
> end/low power devices such as temperature or movement sensors into the
xAP
> world whilst minimising the overall number of moving parts/improving
> reliability over alternative approaches.
>
> HTH
> Patrick
>
> 2010/1/6 brett england <brett@xxxxxxx>
>
>>
>>
>> As in IP ->> Serial link ->> IP
>>
>>
>>
>> Well I guess you could implement PPP on the serial link and the
packet
>> would just broadcast as per usual, if is on the same subnet.
>>
>> Failing that writing a bridge wouldn't be too difficult.
>>
>> What are you trying to do?
>>
>> Brett
>>
>>
>>
>> *From:* xAP_developer@xxxxxxx [mailto:
>> xAP_developer@xxxxxxx] *On Behalf Of *Neil Wrightson
>> *Sent:* 06 January 2010 10:51
>> *To:* xAP_developer@xxxxxxx
>> *Subject:* [xAP_developer] Serial bridge availability
>>
>>
>>
>> Hi All,
>>
>>
>>
>> Does a serial bridge exist for xAP?
>>
>>
>>
>> I.e.
>> Bridging
>>
>> xAP is, so far is as practicable, network agnostic. Where two
networks are
>> to be joined, so that xAP messages can be passed between then, a
software
>> bridge is used. The bridge understands the implementation details
of the xAP
>> protocol on each physical network, and performs the necessary
protocol
>> conversions to pass the message from one network to another.
>>
>> In some cases, the bridge may provide a configuration interface to
allow
>> traffic in one or both directions to be restricted.
>>
>> A proposal has been made to permit messages to be flagged
"non-routable"
>> in the xAP-Header, and for bridges to never pass these messages.
Currently
>> this item is still open.
>>
>> Messages passed over the bridge always have the xAP-header hop
count
>> increased. A bridge may be configured to discard messages with
hop-count > n
>> to prevent looping/broadcast storms.
>>
>>
>>
>> Regards,
>>
>> *Neil Wrightson.*
>>
>>
>>
>>
>
>
>
>
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Yes, for PC (win/linux -- and osx in theory but not tested in practice),
an=
d for rabbit microcontroller.<br>I guess the next question will be
where ca=
n you download them from - unfortunately that is contingent on me bringing
=
my server back on line following a house move.<br>
I think someone (Kevin? Edward?) may have done something with lantronix
too=
.<br>Patrick<br><br><div
class=3D"gmail_quote">2010/1/16 Neil Wrightson <sp=
an dir=3D"ltr"><<a href=3D"mailto:neilw@xxxxxxx";>neilw@xxxxxxx</a>=
></span><br>
<blockquote class=3D"gmail_quote" style=3D"border-left:
1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
=20=20=20=20=20=20=20=20
<div style=3D"background-color: rgb(255, 255, 255);">
<br><br>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" size=
=3D"2"><span>So a serial bridge does not exist=20
then?</span></font></div>
<div>=A0</div>
<div>
<p><span style=3D"font-family: Arial; font-size:
10pt;">Regards,</span> </p=
>
<p><b><span style=3D"font-size: 13.5pt;">Neil
Wrightson.</span></b> </p></d=
iv><br>
<blockquote style=3D"border-left: 2px solid rgb(0, 0, 255);
padding-left: 5=
px; margin-left: 5px; margin-right: 0px;">
<div dir=3D"ltr" align=3D"left"
lang=3D"en-us">
<hr>
<font face=3D"Tahoma"
size=3D"2"><b>From:</b> <a href=3D"mailto:xAP_devel=
oper@xxxxxxx"
target=3D"_blank">xAP_developer@xxxxxxx</a>=20
[mailto:<a href=3D"mailto:xAP_developer@xxxxxxx";
target=3D"_blank=
">xAP_developer@xxxxxxx</a>] <b>On Behalf Of
</b>Neil=20
Wrightson<br><b>Sent:</b> Thursday, 7 January 2010 6:29
AM<div class=3D"i=
m"><br><b>To:</b>=20
<a href=3D"mailto:xAP_developer@xxxxxxx";
target=3D"_blank">xAP_de=
veloper@xxxxxxx</a><br></div><b>Subject:</b>
RE: [xAP_developer] Se=
rial=20
bridge
availability<br></font><br></div><div><div></div><div
class=3D"h5"=
>
<div></div><span>=A0</span>=20
<div>
<p>
</p><div dir=3D"ltr"
align=3D"left"><font color=3D"#0000ff"
face=3D"Arial=
" size=3D"2"><span>Hi
Patrick,</span></font></div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span></span></font>=A0</div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span>You hit the nail on the
head.</span></font></div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span>I'm looking for a serial bridge
to connect various=20
AVR microcontrollers.</span></font></div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span></span></font>=A0</div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span>1. Do you have the PC based IP network to
serial port=20
application?</span></font></div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span>=A0=A0=A0 Would I be able to down load
this=20
from you?</span></font></div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span></span></font>=A0</div>
<div dir=3D"ltr" align=3D"left"><font
color=3D"#0000ff" face=3D"Arial" si=
ze=3D"2"><span>2. On the Lantronix side, how did you set
up this=20
device? Did you somehow pass all Ethernet xAP traffic to the RS232 side a=
nd=20
also how did you send it from the RS232 back to the Ethernet? As in how d=
id=20
you tell the Lantronix device that this is the start of a xAP message, bu=
ffer=20
until=A0I have sent you the full message and then transmit in a whole UDP=
=20
packet.</span></font></div>
<div>=A0</div>
<div>
<p><span style=3D"font-family: Arial; font-size:
10pt;">Regards,</span> <=
/p>
<p><b><span style=3D"font-size: 13.5pt;">Neil
Wrightson.</span></b>=20
<br></p></div>
<blockquote style=3D"border-left: 2px solid rgb(0, 0,
255);">
<div dir=3D"ltr" align=3D"left"
lang=3D"en-us">
<hr>
<font face=3D"Tahoma"
size=3D"2"><b>From:</b>=20
<a href=3D"mailto:xAP_developer@xxxxxxx";
target=3D"_blank">xAP_=
developer@xxxxxxx</a>=20
[mailto:<a href=3D"mailto:xAP_developer@xxxxxxx";
target=3D"_bla=
nk">xAP_developer@xxxxxxx</a>] <b>On Behalf Of=20
</b>Patrick Lidstone<br><b>Sent:</b> Wednesday, 6
January 2010 10:20=20
PM<br><b>To:</b> <a href=3D"mailto:xAP_developer@xxxxxxx";
targe=
t=3D"_blank">xAP_developer@xxxxxxx</a><br><b>Subject:</b>=20
Re: [xAP_developer] Serial bridge
availability<br></font><br></div>
<div></div><span>=A0</span>=20
<div>
<p>I think the definition of serial bridge here is a serial based
(RS23=
2 or=20
RS485) device that participates in a 'conventional' UDP
broadca=
st/ethernet=20
xAP network.<br><br>Typically this is achieved either using
either a PC=
-=20
and passing xAP messages from the IP network to serial port and vice ve=
rsa,=20
or using an embedded device such as the lantronix IP to serial converte=
rs. I=20
have implemented both at various points... it's useful for
integrat=
ing=20
really low end/low power devices such as temperature or movement sensor=
s=20
into the xAP world whilst minimising the overall number of moving=20
parts/improving reliability over alternative=20
approaches.<br><br>HTH<br>Patrick<br><br>
</p><div class=3D"gmail_quote">2010/1/6 brett england
<span dir=3D"ltr"=
><<a href=3D"mailto:brett@xxxxxxx";
target=3D"_blank">brett@xxxxxxx</=
a>></span><br>
<blockquote style=3D"border-left: 1px solid rgb(204, 204,
204);" class=
=3D"gmail_quote">
<div bgcolor=3D"white" link=3D"#1E66AE"
vlink=3D"#1E66AE" lang=3D"EN-=
GB"><br><br>
<div>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;">As=20
in IP ->> Serial link ->> IP
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;"></span>=A0</p>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;">Well I guess you could=20
implement PPP on the serial link and the packet would just broadcast =
as=20
per usual, if is on the same subnet.</span></p>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;">Failing that writing a=20
bridge wouldn't be too difficult.</span></p>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;">What are you trying to=20
do?</span></p>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;">Brett</span></p>
<p class=3D"MsoNormal"><span style=3D"color:
rgb(31, 73, 125); font-s=
ize: 11pt;"></span>=A0</p>
<div>
<div style=3D"border-style: solid none none; border-color:
-moz-use-t=
ext-color; border-width: 1pt medium medium;">
<p class=3D"MsoNormal"><b><span
style=3D"font-size: 10pt;" lang=3D"EN=
-US">From:</span></b><span style=3D"font-size:
10pt;" lang=3D"EN-US"> <a hr=
ef=3D"mailto:xAP_developer@xxxxxxx";
target=3D"_blank">xAP_developer=
@yahoogroups.com</a> [mailto:<a href=3D"mailto:xAP_developer@xxxxxxx=
m" target=3D"_blank">xAP_developer@xxxxxxx</a>]
<b>On Behalf Of=20
</b>Neil Wrightson<br><b>Sent:</b> 06 January 2010
10:51<br><b>To:</b=
> <a href=3D"mailto:xAP_developer@xxxxxxx";
target=3D"_blank">xAP_de=
veloper@xxxxxxx</a><br><b>Subject:</b>=20
[xAP_developer] Serial bridge
availability</span></p></div></div>
<div>
<div></div>
<div>
<p class=3D"MsoNormal">=A0</p>
<p class=3D"MsoNormal"></p>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:
10pt;">Hi All,</span=
></p></div>
<div>
<p class=3D"MsoNormal">=A0</p></div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:
10pt;">Does a serial=
=A0bridge=20
exist for xAP?</span></p></div>
<div>
<p class=3D"MsoNormal">=A0</p></div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:
10pt;">I.e.</span></=
p></div>
<div>
<h2><span>Bridging</span></h2>
<p><span style=3D"font-size: 10pt;">xAP is, so far is
as practicable,=
network=20
agnostic. Where two networks are to be joined, so that xAP messages c=
an be=20
passed between then, a software bridge is used. The bridge understand=
s the=20
implementation details of the xAP protocol on each physical network, =
and=20
performs the necessary protocol conversions to pass the message from =
one=20
network to another. </span></p>
<p><span style=3D"font-size: 10pt;">In some cases,
the bridge may pro=
vide a=20
configuration interface to allow traffic in one or both directions to=
be=20
restricted. </span></p>
<p><span style=3D"font-size: 10pt;">A proposal has
been made to permi=
t=20
messages to be flagged "non-routable" in the xAP-Header,
an=
d for bridges=20
to never pass these messages. Currently this item is still open.=20
</span></p>
<p><span style=3D"font-size: 10pt;">Messages passed
over the bridge a=
lways=20
have the xAP-header hop count increased. A bridge may be configured t=
o=20
discard messages with hop-count > n to prevent looping/broadcast=20
storms. </span></p></div>
<div>
<p class=3D"MsoNormal">=A0</p></div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:
10pt;">Regards,</spa=
n>=20
</p></div>
<div>
<p><b><span style=3D"font-size: 13.5pt;">Neil
Wrightson.</span></b>=20
</p></div></div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:
white;"></span></p></div=
></div><br><br>
<div style=3D"color: white;"
width=3D"1"></div></div></div></div></di=
v></div></blockquote></div><br>
<p></p></div></blockquote>
<p></p></div>
<br>
=20=20=20=20
=20=20=20=20
<br>
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