On Ter, 2003-08-05 at 22:30, J. Seth Henry wrote: > Not sure if this is the right list or not, but I could really use some > pointers. > > How can I code trap serial port interrupts in my C program?
You can't attach to interrupts in a userland program, but you can access serial ports by opening any of /dev/cuaaX device files. > For example, I want to read values from a serial device every > user-specified number of seconds, calculate some stuff and then sit for > a while. Should the serial device decide it wants to send some data > unsolicited, I would like to enter an interrupt service routine, handle > the communication, and then return to the previous loop. > > I can get the loop going by using sleep(n), but I don't know how to > write the ISR in C, and (additionally) make it such that it will run on > any *nix like platform. > > Any pointers, HOWTO's, or examples would be greatly appreciated! Take a look at these (in no particular order): - http://www.easysw.com/~mike/serial/ "Serial Programming Guide for POSIX Operating Systems" - http://en.tldp.org/HOWTO/Serial-Programming-HOWTO/index.html "Serial Programming HOWTO" - http://www.freebsd.org/handbook/serialcomms.html "Serial Communications" - sio(4) Good luck! Rui Lopes _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"