71 lines
2.0 KiB
PowerShell
71 lines
2.0 KiB
PowerShell
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param(
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[switch]$ListPorts,
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[string]$PortName = 'COM3',
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[int]$Baud = 9600,
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[string]$Parity = 'None',
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[string]$Send,
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[int]$Listen = 0,
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[switch]$Interactive
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)
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if ($ListPorts) {
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[System.IO.Ports.SerialPort]::GetPortNames() | Sort-Object
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return
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}
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$parityValue = [Enum]::Parse([System.IO.Ports.Parity], $Parity)
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$sp = New-Object System.IO.Ports.SerialPort($PortName, $Baud, $parityValue, 8, [System.IO.Ports.StopBits]::One)
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$sp.ReadTimeout = 300
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$sp.NewLine = "`n"
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$sp.Encoding = [System.Text.Encoding]::ASCII
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try {
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$sp.Open()
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Write-Host "opened $PortName @ $Baud 8N1, Ctrl+C to exit"
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if ($Send) {
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$payload = $Send -replace '\\n', "`n" -replace '\\r', "`r"
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$sp.Write($payload)
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Write-Host ("TX: " + ($payload -replace "`n", '\n' -replace "`r", '\r'))
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}
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if ($Interactive) {
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while ($true) {
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$line = Read-Host 'TX'
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if ([string]::IsNullOrEmpty($line)) { continue }
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$sp.Write($line + "`n")
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Start-Sleep -Milliseconds 200
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try {
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while ($true) {
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$rx = $sp.ReadExisting()
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if ($rx) { Write-Host ("RX: " + ($rx -replace "`n", '\n' -replace "`r", '\r')) }
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break
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}
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} catch {}
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}
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}
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if ($Listen -gt 0) {
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$deadline = (Get-Date).AddSeconds($Listen)
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$buffer = ''
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while ((Get-Date) -lt $deadline) {
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try {
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$chunk = $sp.ReadExisting()
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if (-not $chunk) {
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Start-Sleep -Milliseconds 50
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continue
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}
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$buffer += $chunk
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$parts = $buffer -split "`n"
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$buffer = $parts[-1]
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$lines = $parts[0..($parts.Count - 2)]
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foreach ($line in $lines) {
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Write-Host ("RX: " + ($line -replace "`r", '') -replace '`n', '')
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}
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} catch {}
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}
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}
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} finally {
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if ($sp.IsOpen) { $sp.Close() }
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}
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