Redirect serial output to file

[woodc]

I have an Arduino connected to my Pi and it seems to be working as expected. If I run the Arduino IDE and use the serial monitor pointed to /dev/ttyACM0 I see the data expected.

If I try to cat /dev/ttyACM0 I also see some data however it immediately returns to the command prompt instead of staying open and showing continued serial data.

This brings me to my question: How can I redirect the serial output to a file? On the beaglebone and other linux boxes I simply cat /dev/ttyACM0 >> /home/blah/serial.log then I can use tail to get the most recent data for use by scripts/posting to Cosm, etc from the serial.log file. On the Pi this does not work...it creates the file but immediately closes.

Thanks all

[pluggy]

I use minicom capturing to a file

Code: Select all

minicom -C /root/capture >> /dev/null

I run it from rc.local. Then I cat and tail the capture file. I also make a copy periodically and tail the copy back to the capture file to keep it from growing indefinitely.

On another arm linux box I just cat and tail the device as you described. The above is a Pi workaround.

[woodc]

Thanks for the reply I will try that again but I am fairly certain this was also dying/quitting instead of running nonstop....

[lindymood]

Check out my recent post. Perhaps this may help?

http://www.raspberrypi.org/phpBB3/viewt ... 37&t=26285