Guru
Joined: 05/03/2018
Location: NetherlandsPosts: 6103
| Posted: 08:32am 07 Jun 2020 |
Thank you all for helping me with suggestions.
I tried each one of them and had not the success I hoped for.
But JohnS's suggestion made me think about processes.
I found a working solution, not by tweaking the stty command, or the opening and closing of the serial port, but by simply opening putty in the background (something I did manual to make it work). I don't even have to use the stty anymore since Putty has taken care of that.
So... this works....
#!/bin/bash
#open serial port using pre configured Putty in the background
putty -load "Arduino" &
#let arduino wake up
sleep 3
for i in {1..1000}
do
echo $i
echo "dwrite 13,1" > /dev/ttyUSB0
sleep 0.5
echo "dwrite 13,0" > /dev/ttyUSB0
sleep 0.5
done
#open serial port using pre configured Putty in the background
putty -load "Arduino" &
#let arduino wake up
sleep 3
for i in {1..1000}
do
echo $i
echo "dwrite 13,1" > /dev/ttyUSB0
sleep 0.5
echo "dwrite 13,0" > /dev/ttyUSB0
sleep 0.5
done
Thank you all for your help, it was your suggestiions that lead to a solution.
It may not be a "production solution" but for my test setup it is fine.
Regards,
Volhout.