redirect serial input from device to file in bash script

Asked Jan 04 '17 at 11:04

Active Sep 18 '22 at 14:19

Viewed 6,283 times

I'm working with a device connected to my PC via serial port.
When i send a command to this device (using putty or minicom) it send me back some output.
I would like to save this output (serial input of my PC) on a local file.
I found this workaround to do this:

-In the first terminal i type:

 cat -v /dev/ttyACM0 > filename

-In another terminal i type:

 echo -ne 'cat "filename"\n\r' > /dev/ttyACM

It works, but i'd like to automate the process with a single bash script.

./serialDownload.sh filename

I tried to put in background the first command before executing the second one but it doesn't work...

#!/bin/bash 


SERIAL_PORT="/dev/ttyACM0"
BAUDRATE=9600  

stty raw speed $BAUDRATE
./serialListen.sh $1& (->this put in background the first command)
sleep 2
echo -e 'cat "'$1'"\n\r' > $SERIAL_PORT

Thank you in advance for any kind of help!

asked Jan 04 '17 at 11:04

alejho

1

duplicate: http://stackoverflow.com/questions/12990702/linux-serial-port-listener-and-interpreter – Ipor Sircer Jan 04 '17 at 11:15
...it doesn't really fix my problem but it gives me some good hints i have to work on..thank you! – alejho Jan 04 '17 at 12:57
Have you tried `wait` or `sleep 1` at the end of the script? – Velkan Jan 04 '17 at 14:00

redirect serial input from device to file in bash script

0 Answers0