I would like to know how to read a sync pulse from the com port.

[Tbone]

I am trying to program an application that reads an external pulse connected to the com port before my application sends strings at once second to control a piece of equipment. I would like to see how to read the com port to trigger my application.

[rpursley8]

You can try the attached program. I essentially monitors the CTS pin on the serial port (pin 8 on a 9-pin connector, pin 5 on a 25-pin connector) until it gets a low to high transition. You would add the other code you want to run in the sequence area.