Serial Communication (minicom ?)

butor20022 · 11-16-2010, 10:37 AM

I need to send the following command to a device via the com port:

<esc>&PR1<CR>

How can I do that using the echo > /dev/ttys0 or minicom ?

In particular, I dont know how to translate the "escape" and "carriage return" keys

TB0ne · 11-16-2010, 10:50 AM

Quote:

Originally Posted by butor20022

I need to send the following command to a device via the com port:

<esc>&PR1<CR>

How can I do that using the echo > /dev/ttys0 or minicom ?

In particular, I dont know how to translate the "escape" and "carriage return" keys

You can use minicom, but if you only have to send one string and be done, the echo is better.

Look up the control codes and escape characters on the net, there are many examples. In your case, try:

Code:

echo "\\%PR1\r" > /dev/ttys0

butor20022 · 11-16-2010, 11:19 AM

Quote:

Originally Posted by TB0ne

You can use minicom, but if you only have to send one string and be done, the echo is better.

Look up the control codes and escape characters on the net, there are many examples. In your case, try:

Code:

echo "\\%PR1\r" > /dev/ttys0

Thanks for the help.
That didnt work. Well I didnt get an error message but the device didnt respond (I did it with hyperterminal in a windows machine so im sure about the cable/device)

Maybe it has to do with the configuration of my ttyS0 (com port)
I need the following settings:

1-Baud = 6900
2-Data = Eight bit
3-Parity = None
4-Stop = One bit
5-Handshake = None
6-Configuration = Non-multidrop

What would be the correct stty syntax to set this ?

TB0ne · 11-16-2010, 11:38 AM

Quote:

Originally Posted by butor20022

Thanks for the help.
That didnt work. Well I didnt get an error message but the device didnt respond (I did it with hyperterminal in a windows machine so im sure about the cable/device)

Maybe it has to do with the configuration of my ttyS0 (com port)
I need the following settings:

1-Baud = 6900
2-Data = Eight bit
3-Parity = None
4-Stop = One bit
5-Handshake = None
6-Configuration = Non-multidrop

What would be the correct stty syntax to set this ?

6900???

Check out the "setserial" command...type in "man setserial"

butor20022 · 11-16-2010, 12:33 PM

Quote:

Originally Posted by TB0ne

6900???

Check out the "setserial" command...type in "man setserial"

9600...

jefro · 11-16-2010, 03:32 PM

Wonder if the old way to send keys might help. It was like alt key plus numbers to send an escape key.