hello, did you work on embeded linux?

[confuz]

hello everyone,

the thing is, i run into a problem when i tried on linux to communicate a printer through a serial port.

i found there is noway to setting up hardware flow control in termios struct. so i tried the software control, that is, use x-on/x-off. pls see flowing code segment:

options.c_iflag |= (IXON | IXOFF | IXANY);
options.c_cc[VSTART] = VSTART_MACRO;
//disable hardware control
options.c_cflag &= ~CRTSCTS;

but, when i try to listen to the serial port, there is nothing coming out and in, whatever i write. i use select interface to monitor the serial port file descrpt.i can see my input on terminal window, but the printer did not answer it.

could you help to check, is there anything wrong in my code? is it not a possible way to work on serial port like this?

cheers,

confuz

[tashirosgt]

Why did you put "embedded" in the title of your post? Does your attempt to communicated with a serial port work on an ordinary PC or not?

If you want someone to check your code, I think you need to post an example that can be complied and run.

[confuz]

Originally Posted by tashirosgt

Why did you put "embedded" in the title of your post? Does your attempt to communicated with a serial port work on an ordinary PC or not?

If you want someone to check your code, I think you need to post an example that can be complied and run.

no, it will be ported to an embeded utclinux.

yes, i want people who have similar working experiences to give some suggestions. i do not have a working code. what i've done is just same as in my first post.

thanks for your attentions.

---------- Post added at 05:44 AM CST ---------- Previous post was at 05:39 AM CST ----------

the problem is kinda solved by another guy, and i do not know how exactly.

the post could be closed.

still i do not how to set the terminos struct to talk to a device through serial pins.

thanks, guys.