don't forget serial communications requires that conditions match on both sides,
usually the one that does not match is baudrate (transfer speed), it must be the same on both sides.
The best way to first establish (usually only needed once to get handshaking correct) serial communications is by using a serial communications stand alone package like putty: https://www.putty.org/
usually the one that does not match is baudrate (transfer speed), it must be the same on both sides.
The best way to first establish (usually only needed once to get handshaking correct) serial communications is by using a serial communications stand alone package like putty: https://www.putty.org/