Question

第一次尝试使用UDP。我在UDP广播中从NMEA字符串中获取lat / long。下面的代码在ISE中工作正常，但在控制台中挂起。我同时使用管理员权限运行。关于该主题的其他帖子建议使用dot-sourcing，没有区别。我怀疑这与它如何处理变量有关，但已经碰壁了。在此先感谢您的帮助。

##########################################################################
#
# Read $GPGGA string from UDP broadcast on port 40181
#
# Convert Degree-Minutes-Seconds format to decimal lat/long
#
# UDP code harvested from http://winpowershell.blogspot.com/2010/01/powershell-udp-clientserver.html
#
# 
##########################################################################

# Form a connection point
$endpoint = New-Object system.net.ipendpoint([system.net.ipaddress]::Any,0)

Write-Host "Endpoint: " $endpoint

# Open UDP client
$udpclient = new-Object system.Net.Sockets.Udpclient(40181)

Write-Host "UDP client: " $udpclient

# Grab the datagram 
$content = $udpclient.Receive([ref]$endpoint)

Write-Host "Content: " $content

# Put the datagram in $udpstring as type string
$udpstring = [Text.Encoding]::ASCII.GetString($content)

Write-Host "UDP string: " $udpstring

# Close UDP client
$udpclient.Close()

# Get Degree Min Sec format latitude from UDP string
# Explicit typing required in order to do math later
[Double]$DMSlatdeg = $udpstring.Substring(17,2)
$DMSlatmin = $udpstring.Substring(19,2)

# Get North South directional from UDP string
$directNS = $udpstring.Substring(29,1)

# Get Degree Min Sec format longitude from UDP string
# Explicit typing required in order to do math later
[Double]$DMSlongdeg = $udpstring.Substring(31,3)
$DMSlongmin = $udpstring.Substring(34,2)

# Get East West directional from UDP string
$directEW = $udpstring.Substring(44,1)

# Add decimal latitude minutes value to degrees
$declat = ($DMSlatdeg + ($DMSlatmin/60))

# Add decimal longitude minutes value to degrees
$declong = ($DMSlongdeg + ($DMSlongmin/60))

# Output formatted to three decimal places - variable value not changed
Write-Host "Decimal lat: " $declat.ToString("#.###") $directNS
Write-Host "Decimal long: " $declong.ToString("#.###") $directEW

在ISE中我得到了正确的输出：

端点：0.0.0.0：0

UDP客户端：System.Net.Sockets.UdpClient

内容：36 71 80 71 71 65 44 [等]

UDP字符串：$ GPGGA，160516.13，[etc]

十进制纬度：[正确值] N

十进制长：[正确值] W

在控制台中，它会输出前两个语句并挂起：

端点：0.0.0.0：0

UDP客户端：System.Net.Sockets.UdpClient

我设置$ content的方式有问题吗？

Powershell UDP脚本适用于ISE，但不适用于Console

0 个答案: