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SerialPort.AvailableBytes
Queries number of bytes available in buffer.
| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
| SerialPort | 4.4 | ✅ Yes | ✅ Yes | ❌ No | ✅ Yes, on macOS and Windows | ❌ No |
MBS( "SerialPort.AvailableBytes"; PortReference ) More
Parameters
| Parameter | Description | Example |
|---|---|---|
| PortReference | The reference number of the port. You get this number from SerialPort.Open when you open the port. | $port |
Result
Returns number or error.
Description
Queries number of bytes available in buffer.Examples
Queries bytes and reads them:
$count = MBS( "SerialPort.AvailableBytes"; $PortReference )
$text = MBS( "SerialPort.Read"; $PortReference; $count; "windows" )
$text = MBS( "SerialPort.Read"; $PortReference; $count; "windows" )
Read in loop as long as data comes in:
# read data until end
Set Variable [$data; Value:""]
Loop
Pause/Resume Script [Duration (seconds): ,1]
#exit when no more data
Exit Loop If [not (MBS( "SerialPort.AvailableBytes"; $port ) > 0)]
#read some data
Set Variable [$newdata; Value:MBS( "SerialPort.Read"; $port; 10000; "windows" )]
Set Variable [$data; Value:$data & $newdata]
#next
Pause/Resume Script [Duration (seconds): ,1]
End Loop
Set Variable [$data; Value:""]
Loop
Pause/Resume Script [Duration (seconds): ,1]
#exit when no more data
Exit Loop If [not (MBS( "SerialPort.AvailableBytes"; $port ) > 0)]
#read some data
Set Variable [$newdata; Value:MBS( "SerialPort.Read"; $port; 10000; "windows" )]
Set Variable [$data; Value:$data & $newdata]
#next
Pause/Resume Script [Duration (seconds): ,1]
End Loop
See also
Blog Entries
This function is free to use.
Created 21st October 2014, last changed 30th November 2016
