Hi,

I am new to linux and was just wondering how one can see the status of the serial ports....as in i have to write a program to send and receive data thru the serial port.....but i dunno what the address of my serial port is (ttyS0-ttyS29)....there r a lot of ttyS* in my /dev directory....

i just wanted to check how to assign

ttyfd = open("/dev/ttyS_",O_RDWR);

in the program, i am using the above line to open the serial port but i need to know which number it is say 0 or 1 etc.....

Any help will be greatly appreciated .....

Thanks a lot...

COM1=/dev/ttyS0
COM2=/dev/ttyS1 ... etc
Try:
ttyfd = open("/dev/ttyS0",O_RDWR | O_NOCTTY);
For more info:
See the Serial-Programming-HOWTO @ www.tldp.org
And this:
http://www.easysw.com/~mike/serial/

Thanks a lot for the reply....
the link was really helpful....

helped solve another probem about flags as well...


Thanks again...