Generic comunicaction through serial port

ivanperino · August 12, 2007, 9:31pm

My inquire is about comunication through serial port on RB500.
Is there any way to read and write over RS232 port on RB? I have seen SIGWATCH but it doesn´t give me a complete solution. It only watches an electrical signal on serial port.
I would like to read data from that port, thus, perform some script with it.
Or may be write to some microprocessed application outside the RB.
Is it possible? how can I do it?

My purpose is to make a monitor/execution application (energy, alarm, reset powersupplay, etc.)

Thank you a lot. I will appreciate any help from you.
Ivan Perino
Argentina
MUM is near!

Giepie · August 13, 2007, 12:08am

Hi

AFAIK there are only 3 ways of using the serial port.

Terminal services in order to access MT from your PC
INPUT from your UPS
Communication with devices such as GPRS modems.

I did read in some forum, that you can use AT commands to control devices as per your request. Do some more searching, I’m sure you’ll find it.

Hope I’ve put you on the right track!

BTW, did you know it is possible to run damnsmall linux on a RB with a 128MB CF card? I’m sure you could do more on Linux than with MT in this regard.

el_berto · November 19, 2007, 10:51am

Hi, I apologize but I’m a beginner and I am a lot confused:
I would like to use a RB112 (1 COM) with a GPRS modem through serial port: if I’m not wrong I should command it through System → Serial-terminal serial0 but I receive the message “port is already in use”.
Whet’s wrong?

teixeiragv · March 23, 2009, 1:16am

Hope you have sorted this out already.
Anyway, just to help some other researchers.... and give some more directions on this question....

The console uses the serial0 as default. If you want to access a device on the MT command line, you need first to disable the console.
To confirm:

port print

you may see something like this:

[admin@VLAN test 2] /port> print
Flags: I - inactive

NAME USED-BY BAUD-RATE

0 serial0 Serial Console auto
[admin@VLAN test 2] /port>

to disable console:

system console disable 0

Now you can try to access again!
Good luck to all!
Guilly