Serial Communications w/ PoSH

Hello,

I am trying to write and read frm a serial port with Powershell.

I found Jeff Snover's post on the Powershell MSDN blog, but Powershell
craches whenever I add anything to the DataReceived event.

If anyone has any samples of how to open a COM Port, write a few CRLF and
read the result, I would appreciate it!.

Thanks,

Bob

async eventsupport is not yet supported natively , you can only "wait" for
the event

you can use Oisins excelent event library for this

http://www.codeplex.com/PSEventing

Greetings /\/\o\/\/
http://thePowerShellGuy.com

"robsmith" wrote:

> Hello,
>
> I am trying to write and read frm a serial port with Powershell.
>
> I found Jeff Snover's post on the Powershell MSDN blog, but Powershell
> craches whenever I add anything to the DataReceived event.
>
> If anyone has any samples of how to open a COM Port, write a few CRLF and
> read the result, I would appreciate it!.
>
> Thanks,
>
> Bob

Mow,

Thanks for the reply. I tried it and can receive events, but I am having
difficulty looking at the actual data returned. Args.Data does not appear to
exist ...

Any help would be appreciated.

Thanks,

Bob

PS C:\PoSHeventing> get-eventbinding port

VariableName EventName TypeName
Listening
------------ --------- --------
---------
port DataReceived SerialPort
True


PS C:\PoSHeventing> $events
PS C:\PoSHeventing> $event

Occurred Source Name
Args
-------- ------ ----
----
7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...






"/\/\o\/\/ [MVP]" wrote:

> async eventsupport is not yet supported natively , you can only "wait" for
> the event
>
> you can use Oisins excelent event library for this
>
> http://www.codeplex.com/PSEventing
>
> Greetings /\/\o\/\/
> http://thePowerShellGuy.com
>
> "robsmith" wrote:
>
> > Hello,
> >
> > I am trying to write and read frm a serial port with Powershell.
> >
> > I found Jeff Snover's post on the Powershell MSDN blog, but Powershell
> > craches whenever I add anything to the DataReceived event.
> >
> > If anyone has any samples of how to open a COM Port, write a few CRLF and
> > read the result, I would appreciate it!.
> >
> > Thanks,
> >
> > Bob

hio Rob sorry I can't test

what is the output of
$a = $events[0].args
$a
$a.psbase

greetings /\/\o\/\/

"robsmith" wrote:

> Mow,
>
> Thanks for the reply. I tried it and can receive events, but I am having
> difficulty looking at the actual data returned. Args.Data does not appear to
> exist ...
>
> Any help would be appreciated.
>
> Thanks,
>
> Bob
>
> PS C:\PoSHeventing> get-eventbinding port
>
> VariableName EventName TypeName
> Listening
> ------------ --------- --------
> ---------
> port DataReceived SerialPort
> True
>
>
> PS C:\PoSHeventing> $events
> PS C:\PoSHeventing> $event
>
> Occurred Source Name
> Args
> -------- ------ ----
> ----
> 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> System.IO.Ports.SerialData...
> 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> System.IO.Ports.SerialData...
> 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> System.IO.Ports.SerialData...
> 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> System.IO.Ports.SerialData...
> 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> System.IO.Ports.SerialData...
> 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> System.IO.Ports.SerialData...
>
>
>
>
>
>
> "/\/\o\/\/ [MVP]" wrote:
>
> > async eventsupport is not yet supported natively , you can only "wait" for
> > the event
> >
> > you can use Oisins excelent event library for this
> >
> > http://www.codeplex.com/PSEventing
> >
> > Greetings /\/\o\/\/
> > http://thePowerShellGuy.com
> >
> > "robsmith" wrote:
> >
> > > Hello,
> > >
> > > I am trying to write and read frm a serial port with Powershell.
> > >
> > > I found Jeff Snover's post on the Powershell MSDN blog, but Powershell
> > > craches whenever I add anything to the DataReceived event.
> > >
> > > If anyone has any samples of how to open a COM Port, write a few CRLF and
> > > read the result, I would appreciate it!.
> > >
> > > Thanks,
> > >
> > > Bob

Mow,

Here's the output you requested ...

PS C:\Documents and Settings\robsmith> $port


BaseStream : System.IO.Ports.SerialStream
BaudRate : 1200
BreakState : False
BytesToWrite : 0
BytesToRead : 23
CDHolding : False
CtsHolding : False
DataBits : 8
DiscardNull : False
DsrHolding : False
DtrEnable : False
Encoding : System.Text.ASCIIEncoding
Handshake : None
IsOpen : True
NewLine :

Parity : None
ParityReplace : 63
PortName : COM1
ReadBufferSize : 4096
ReadTimeout : -1
ReceivedBytesThreshold : 1
RtsEnable : False
StopBits : One
WriteBufferSize : 2048
WriteTimeout : -1
Site :
Container :



PS C:\Documents and Settings\robsmith> $e

Occurred Source Name
Args
-------- ------ ----
----
7/23/2007 9:45:11 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/23/2007 9:45:11 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/23/2007 9:45:11 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/23/2007 9:45:11 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/23/2007 9:45:11 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/23/2007 9:45:11 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...
7/23/2007 9:45:24 AM System.Management.Automati... DataReceived
System.IO.Ports.SerialData...


PS C:\Documents and Settings\robsmith> get-eventbinding

VariableName EventName TypeName
Listening
------------ --------- --------
---------
port DataReceived SerialPort
True


PS C:\Documents and Settings\robsmith> $e[0].Args


EventType

---------

Chars
PS C:\Documents and Settings\robsmith> $a


EventType

---------

Chars


PS C:\Documents and Settings\robsmith> $a.psbase


EventType

---------

Chars


I also posted to a discussion on Oisin's site, haven't heard back yet.

Thanks for the help,

Bob


"/\/\o\/\/ [MVP]" wrote:

> hio Rob sorry I can't test
>
> what is the output of
> $a = $events[0].args
> $a
> $a.psbase
>
> greetings /\/\o\/\/
>
> "robsmith" wrote:
>
> > Mow,
> >
> > Thanks for the reply. I tried it and can receive events, but I am having
> > difficulty looking at the actual data returned. Args.Data does not appear to
> > exist ...
> >
> > Any help would be appreciated.
> >
> > Thanks,
> >
> > Bob
> >
> > PS C:\PoSHeventing> get-eventbinding port
> >
> > VariableName EventName TypeName
> > Listening
> > ------------ --------- --------
> > ---------
> > port DataReceived SerialPort
> > True
> >
> >
> > PS C:\PoSHeventing> $events
> > PS C:\PoSHeventing> $event
> >
> > Occurred Source Name
> > Args
> > -------- ------ ----
> > ----
> > 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> > System.IO.Ports.SerialData...
> > 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> > System.IO.Ports.SerialData...
> > 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> > System.IO.Ports.SerialData...
> > 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> > System.IO.Ports.SerialData...
> > 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> > System.IO.Ports.SerialData...
> > 7/20/2007 8:24:13 AM System.Management.Automati... DataReceived
> > System.IO.Ports.SerialData...
> >
> >
> >
> >
> >
> >
> > "/\/\o\/\/ [MVP]" wrote:
> >
> > > async eventsupport is not yet supported natively , you can only "wait" for
> > > the event
> > >
> > > you can use Oisins excelent event library for this
> > >
> > > http://www.codeplex.com/PSEventing
> > >
> > > Greetings /\/\o\/\/
> > > http://thePowerShellGuy.com
> > >
> > > "robsmith" wrote:
> > >
> > > > Hello,
> > > >
> > > > I am trying to write and read frm a serial port with Powershell.
> > > >
> > > > I found Jeff Snover's post on the Powershell MSDN blog, but Powershell
> > > > craches whenever I add anything to the DataReceived event.
> > > >
> > > > If anyone has any samples of how to open a COM Port, write a few CRLF and
> > > > read the result, I would appreciate it!.
> > > >
> > > > Thanks,
> > > >
> > > > Bob