is there "Bytes at Serial Port" interupt ??

[hookso]

hello !

i am expecting to recieve specific number of bytes at serial port.

i can surely check "Bytes at Serial Port" within a loop, but, i do not want to do this in polling mode which consumes cpu.

i want to get an interupt (or event) that tells me that 24 byes has arrived at port.

how can i achive such thing ?

guy.

[smercurio_fc]

You could use VISA events. You did not indicate which development environment you are using, but if it's LabVIEW then open the Example Finder (Help -> Find Examples) and you can find it. For example, if you search for "VISA" open the example "Detect Break Event". This shows you how to enable VISA events.

[hookso]

yes , i'm using labview.

i know how to use visa events.

couldn't find an such event that waits for a specific number of bytes to arrive.

[smercurio_fc · Accepted solution]

You can use the "Serial Character" event. This will trigger when at least one character arrives at the serial port. You can collect the characters in a loop until you get 24. There is no specific event for 24 characters.