if grep -q -s Microsoft /proc/version; then \
echo 'ERROR: AVR flashing cannot be automated within the Windows Subsystem for Linux (WSL) currently. Instead, take the .hex file generated and flash it using AVRDUDE, AVRDUDESS, or XLoader.'; \
else \
+ printf "Detecting USB port, reset your controller now."; \
ls /dev/tty* > /tmp/1; \
- echo -e "Detecting USB port, reset your controller now.\c"; \
while [ -z $$USB ]; do \
- sleep 1; \
- echo -e ".\c"; \
+ sleep 0.5; \
+ printf "."; \
ls /dev/tty* > /tmp/2; \
- USB=`diff /tmp/1 /tmp/2 | grep -o '/dev/tty.*'`; \
+ USB=`comm -13 /tmp/1 /tmp/2 | grep -o '/dev/tty.*'`; \
+ mv /tmp/2 /tmp/1; \
done; \
echo ""; \
echo "Detected controller on USB port at $$USB"; \