CODEWITHSUNDEEP
bashserial-port
justsomeoneelse
justsomeoneelse

Reputation: 49

How to Read AT Command Response on Bash Script

I want to send an AT command and read response from bash script. My code is like:

stty -F /dev/ttyS5 9600
echo "AT" > /dev/ttyS5
timer=0
while read -rs -n 1 c
do
    echo "$c" >> test
    echo "$c"
    ((timer++))
    sleep 1
    if [ "$timer" == 3 ] ; then
        break
    fi
done < /dev/ttyS5

then i want to read from test file the response is OK or not. But my scripts output be like:

senseless value
O
K

when i read that i had some troble. What is the best way of checking AT command response?

Upvotes: 0

Views: 868

Answers (1)

UncleCarl
UncleCarl

Reputation: 330

You will be much happier, assuming you can install software in your environment, in searching for a package for communicating on a tty line. cu and minicom come to mind. Also, you might want to look at expect for scripting keystrokes and checking responses.

Using bash this way will be quite a challenge.

Upvotes: 1

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