Powershell serial communication with Arduino

i pulling hair out trying figure out why can't communicate arduino through windows powershell (which relies on .net components).  hopefully others.  the final code is:

code: [select]


$port = new-object system.io.ports.serialport
$port.portname = "com6"
$port.baudrate = "9600"
$port.parity = "none"
$port.databits = 8
$port.stopbits = 1
$port.readtimeout = 9000 # 9 seconds
$port.dtrenable = "true"

$port.open() #opens serial connection

start-sleep 2 # wait 2 seconds until arduino ready

$port.write("93c") #writes content serial connection

try
{
  while($myinput = $port.readline())
  {
  $myinput
  }
}

catch [timeoutexception]
{
# error handling code here
}

finally
{
# cleanup code goes here
}

$port.close() #closes serial connection



the line made difference this:

$port.dtrenable = "true"

also, have arduino write response after executes every command, hence read afterwards.

hope helps someone.

most interesting. how input pc serial port arduino displayed powershell? use batch files send strings com port, cmd.exe doesn't have capability read serial port input buffer.

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