Raghav,

Raghav Gururajan wrote:
> Sorry, I am not aware of what tools you are reffering to. Are 
> you
> suggesting hardware tools or software tools? If it is the 
> latter, can
> you please mention an easiest tool name and the syntax for 
> checking for
>  serial ports?

Just ‘cat /dev/ttySn’ will work, or something silly like ‘LANG=C 
sed s/./blah/g </dev/ttySn’ if you're bored and don't want to have 
to run ‘reset’ afterwards.

Then use your pen and wait for output.

Kind regards,

T G-R