Hi, am I right or wrong in thinking I need to use the SoftwareSerial library to use digital pin 18 ("tx1") for RS232 output on the Mega2560?
I have the appropriate TTL->RS232 interface hardware already in place.
I'm already using Serial.print() to send debugging messages to the host PC, so I'll need to be able to specify pin18 for other things.
I was further confused by the name 'software serial' as I thought that TX1 etc. might be a true USART, so I'm trying to find that out in the meantime.