Supported since R30376

• lcd4linux = add driver for the LCD of the TEW-673GRU board
• lcd4linux-tew673gru = new package for TEW673GRU specific LCD4linux files

→generic.flashing
Snapshot firmware at http://downloads.openwrt.org/snapshots/trunk/ar71xx/openwrt-ar71xx-generic-tew-673gru-squashfs-factory.bin
Upload snapshot firmware through Trendnet Web Interface

→configuration
Enable: lcd /etc/init.d/lcd4linux enable
Start: lcd /etc/init.d/lcd4linux start
Some information on LCD will be missing (complaints in logread). To fix this you will have to build your own image. Install the packages lcd4linux-tew673gru lcd4linux-full (./scripts/feeds install lcd4linux-tew673gru and ./scripts/feeds install lcd4linux-full). And then in make menuconfig under Utilities/lcd4linux-custom, select the netdev and uname plugins

Keypad (uses I2C bus)

10-15% CPU utilisation to just update LCD with a few statistics. To reduce load, edit /etc/lcd4linux.conf and increase "Busy" update interval to 5000 msecs or more. Also increase tick and tack. Note - This will reduce the frequency of updates