Reset USB port prior to use due to device lockup

[ocgltd]

I've found lots of posts about the YS1 locking up, and failing to transmit because it's left in an undefined state. (Due to design issues with the s/w on the YS1).

I created the following bash script (ys1reset.sh) to reset the YS1 device prior to transmitting. I thought you might want to incorporate something like this into your py code...

YS1V=1D50
YS1P=605B

FOUND=0
YS1V=$(echo "$YS1V" | tr '[:upper:]' '[:lower:]')
YS1P=$(echo "$YS1P" | tr '[:upper:]' '[:lower:]')
for X in /sys/bus/usb/devices/*; do 
    V=$(cat "$X/idVendor" 2>/dev/null  | tr '[:upper:]' '[:lower:]')
    P=$(cat "$X/idProduct" 2>/dev/null | tr '[:upper:]' '[:lower:]')
    if [ "$V" == "$YS1V" ] ; then
      FOUND=1
      break
    fi
done

if [ $FOUND -eq 1 ] ; then
  echo "Reset USB device [$V] [$P] on $X"
  echo "Done"
  echo 0 > "$X/authorized"
  echo 1 > "$X/authorized"
else
  echo "Device not found"
fi