Hello,

I need to disable the ANSI Escape Characters(those used for color highlightning and changing the cursor positions, etc.) on the serial console, because I'm sending the serial output directly to another microcontroller which sends this to a Teleprinter, so there is no need for colors.
I've searched for config files and looked into the kernel_menuconfig thingy, but could not find any option to select what the terminal output should look like.
Does someone know any way to tell the kernel, that I don't want those characters or any place where I can find informations about where to set up stuff like that?
Because my terminal also does have only about 60 characters per line and it would be nice if I could change the characters needed to make a new line.
I could parse the output to look for "Escape" Characters and cut off the highlightning or do the new line on the microcontroller, but it would be cleaner if I could change those things on the Carambola side.

Another thing I played around with is the u-boot bootloader. I tried changing settings (by "setenv variable status" then "saveenv"). Those settings were still there when I went again to this command line tool, but they weren't applied. I tried to hand over "bootargs loglevel=1" to disable the kernel log messages, but that dind't work(neither did chaning the bootdelay, baudrate, ...).
What am I doing wrong here?

Thanks,

Fred

Using /etc/inittab you can totally disable the console shell so it becomes a bare serial port for your exclusive use, or you could swap the ports so you still have a console shell on the other port, or just use the other serial port if your other device likes TTL levels. If you're using shell commands to output stuff then you can redirect it to where you want, e.g. another serial port, doesn't have to be stdout.

In my project I talk to another micro using the second serial port from a C program and it's just a bare port so nothing is interpreted (unless you ask for it, i.e. canonical mode). Using the serial port in C is quite well documented and very reliable.

What are you using to write your data?

Thanks for the tip, I will look into that.
The whole thing is planned to be a Teleprinter with the Carambola built in,
so you have a wireless Linux Terminal with a Typewriter-like Interface.
If it would work just to open another Console on the second serial port without the kernel messages,
that would take me one step further, but still won't fix my Color-Codes and Outputs-too-big problems.

I see. I would investigate the TERM environment setting, try setting it to "dumb".

You have to look into configuring bash to disable color codes.
But that alone won't help you getting rid of all of the control codes. Actually you should look more into these codes. The VT100 control codes do allow for setting terminal properties such as resolution (chars x lines). Also if you're using any kind of text editor or Text-UI on that console you'll be flooded with control codes (without those codes these programs couldn't behave the way they do).
So even if you don't want color on your terminal it seems to me you can't get around writing a parser for VT100. (Actually you can specify the terminal protocol in the same config where you enable the serial consoles, but VT100 is already the most basic one I think).
There's a lot of documentation on the net about VT100 and it's not too complicated to write a parser for it (I've done that before).

Indeed, this page for the "term" command mentions a "-m" for mono option.

http://linux.die.net/man/7/term