IoTGateway/BSP/Linux/Linux BSP User Guide Ubuntu18.04 for rk

Linux BSP Version

Ubuntu18.04_aarch64

Ubuntu 18.04 Release Version and Image Download Path

• (V0.014)DS100 DIV0014 2019-10-05

• (V0.012)DS100 DIV0012 2019-09-24

How to do about update Ubuntu in DS100?

• Update Image DS100 and DS100Lite

Account and Password for Login

Account : firefly Password: firefly

OTG port change Host mode

Command

# cd /
# echo host >/sys/kernel/debug/usb0/rk_usb_force_mode

RS-485 Test

RK3399 Send Command

$ sudo su
$ adv
# stty -F /dev/ttyUSB2 speed 115200 -hupcl -icrnl -ixon -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echok
or
# stty -F /dev/ttyUSB3 speed 115200 -hupcl -icrnl -ixon -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echok

Please check return 115200 RK3399 Send "123456ABC" to ttyUSB2 or ttyUSB3

# echo "123456abc" >/dev/ttyUSB2
or 
# echo "123456abc" >/dev/ttyUSB3

RK3399 Receive Command

# cat /dev/ttyUSB2 &
or
# cat /dev/ttyUSB3 &

Video player Test

Player 4K Video Example

# gst-launch-1.0 filesrc location=4k.mp4 ! queue ! qtdemux  name=dmux dmux.video_0 ! queue ! h264parse ! mppvideodec ! kmssink dmux.audio_0 ! queue ! aacparse ! faad ! autoaudiosink