Jaime Garcia wrote: > > > I am pretty new to Linux programming, I want to start doing something > > > useful, so I was thinking to start programming the serial port (RS-232) > > > of my box, so I can read and write data from it, can someone of you give > > > some feedback about how to start this? > > > > The keyword you are looking for is ``ioctl''. > > Right now I opened man ioctl(2) to start looking for directions on > this, I appreciate so much your tip, thanks a lot! =-) You probably don't need to use ioctl() unless you need to treat the serial port as a general-purpose I/O port (e.g. manually setting the control lines). If you just want to talk to another serial device, open()ing one of the /dev/ttyS* devices and using tcsetattr/tcgetattr will normally suffice. If you do need to use ioctl(), the ioctl(2) manpage won't help much, as ioctl() is a generic interface to device-specific functionality. The tty_ioctl(4) manpage has details related to TTY (serial) ioctl() commands. -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
