I have been able to set up a serial port, set the baud rate etc, use send to output data, and verified on oscilloscope. All very simple in the end. I’m now looking to read a reply. With gb.net enabled I can see there is an event called read but examples of its use don’t seem to be event driven :

'******** Incoming serial data ********
PUBLIC SUB SComm _Read()
SLEEP 0.025
TRY READ #SComm , Rx, Lof(SComm )
IF ERROR THEN
Message.info(No received data!
End if

I’m used to the oncomm event in vb which is triggered when a serial port receives data - having to poll the port on the off chance that data arrives doesn’t seem right - does anyone know if there is an equivalent of oncomm? - thanks in anticipation.

 Looks like serial port inherits Stream so usual Stream methods should work.

The event should require that the object is attached either when creating or after.

hSerialPort = New SerialPort ( ) As "SComm"


or ..
hSerialPort = New SerialPort ( )
Object.Attach(hSerialPort, Me, "SComm")

then your SComm_Read() event should work.


Please post some example code or a small application showing the problem if you still need help

PeteMarsh said

I’m used to the oncomm event in vb which is triggered when a serial port receives data

Uhmmmm…that is, are you looking for an Event that will be raised only when the serial port receives data ?

What is this line… ?

TRY READ #SComm , Rx, Lof(SComm )

If Rx is your String I think should be..

Rx = READ #SComm , Lof(SComm)