Linux has character device file representing serial port /dev/ttys*. I can simply open , read , write , close a serial port using system calls in my c program. I am working on a board which has an Intel atom processor. The board runs on fedora, it has 2 rs232 interface.
Is the above mentioned port real or virtual (like socket)?
What I don't get is, how to associate this serial port with the rs232 interface, I want to connect a LCD display to the rs232 and be able to write data to the display, using USB is last choice since I am building a portable medical kit, I don't want it to be power hungry. Any sample code, links of how to code such interface is welcome.