Posted by Grommish on May 25, 2019; 6:58pm
URL: https://itus.accessinnov.com/FIRMWARE-Itus-Networks-Shield-Firmware-Upgrade-WIP-tp1726p1750.html

For anyone who is decent with bash scripting, I'm trying to do the following, but it keeps returning empty in the init script.

CUR_FS=$(blkid /dev/mmcblk1p3 | awk -F= '{print $3}');
echo "[DEBUG] Shield is in ${SHIELD_MODE} Mode - Using /dev/${MNT_POINT} as ${CUR_FS}" > /dev/kmsg

When I run the command on the box in the shell itself, I get the following:

root@OpenWrt:/# $(blkid /dev/mmcblk1p3 | awk -F= '{print $3}');
/bin/ash: "f2fs": not found

"f2fs" is what it SHOULD report, so that's right (although any suggestions on stripping those double-quotes would be very helpful)

However, what appears in the kernel log:

[   34.828073] [DEBUG] Shield is in Gateway Mode - Using /dev/mmcblk1p3 as

Eventually, I'll be replacing the hardcoded mmcblk1p3 with another variable that's set by reading the GPIO settings.

GPIO=0
GPIO16=1
GPIO17=2

GPIO=16
echo $GPIO > /sys/class/gpio/export
echo in > /sys/class/gpio/gpio$GPIO/direction
GPIO16=$(cat /sys/class/gpio/gpio${GPIO}/value)
echo $GPIO > /sys/class/gpio/unexport

GPIO=17
echo $GPIO > /sys/class/gpio/export
echo in > /sys/class/gpio/gpio$GPIO/direction
GPIO17=$(cat /sys/class/gpio/gpio${GPIO}/value)
echo $GPIO > /sys/class/gpio/unexport

if [ $GPIO16 -eq 0 ]; then
   # Gateway Mode
   SHIELD_MODE="Gateway"
   MNT_POINT="mmcblk1p3"
else
   if [ $GPIO17 -eq 0 ]; then
      # Bridge Mode
      SHIELD_MODE="Bridge"
      MNT_POINT="mmcblk1p4"
   else
      # Router Mode
      SHIELD_MODE="Router"
      MNT_POINT="mmcblk1p2"
   fi
fi

This allows us to read the Front-switch state and load the config files as appropriate (and/or just load the appropriate mmcblk for the mode)

Getting there!  My next steps are to ensure the file system is correct (which is why I really need to get the awk command working), format the block if it isn't setup for f2fs, and copy a seed tgz package to the mount point to get things started.  This should let anyone who is coming from the stock Itus images to easily convert over.

Anyway, I know the couple people who are actually following this are away on travel or other things, but maybe they can spot the error I'm having.

Cheers!