Serial port not working?

Question

I made a program that sends out data to my arduino which detects what was sent and then turns on the correct pin according to what key is pressed.

When using the ard

Answer 1

In my case the issue was the reset, but that the serial port was opened - but not available for write until the reset has finished. Putting a 3s delay before writing to the port fixed the issue. Writing ASCII was not an issue.