I am new to Raspberry Pi and GPIO
communication, I am going to make a program to create a communication between my laptop and raspberry via serial com. After referred some tutorial, little confused about the connection between devices.
For my purpose, should I simply connect the RX TX pin
with COM
via 2 wires? or I need to add an ADM232A
interface IC between these to make the conversion of TTY
to RS232C
.
BTW the program is using Qt serial.