No, the pins for each serial port are fixed, you do not need to and cannot define them. To use serial port 2 you would put "Serial2.begin(115200);" (or a baud rate of your choice) in setup() and use Serial2.print() as you suggested.
No, the pins for each serial port are fixed, you do not need to and cannot define them. To use serial port 2 you would put "Serial2.begin(115200);" (or a baud rate of your choice) in setup() and use Serial2.print() as you suggested.