RK ALL RF Test

Applications

The following applications have been installed:

wpa_supplicant
chromium
minicom
iperf3

Performance Mode

Configurate CPU GPU NPU and DDR

Configurate CPU GPU NPU and DDR to performance mode at the same time:

# echo performance | tee $(find /sys/ -name *governor)
#

Configurate CPU only

# echo performance | tee $(find /sys/devices/system/cpu/cpufreq/policy* -name *governor)
#

U-Disk

U-Disk will be mounted at /run/media/sda1 automatically.
/run/media/sda1 is most common condition, it may be /run/media/sdb1 /run/media/sdc1.
Plug out U-Disk, see which one is disappeared, and then to plug in U-Disk again.

LTE

AT Port

How to find AT Port:

# dmesg | grep ttyUSB
[    5.574612] usb 3-1: cp210x converter now attached to ttyUSB0
[    5.586590] usb 3-1: cp210x converter now attached to ttyUSB1
[    5.598584] usb 3-1: cp210x converter now attached to ttyUSB2
[    5.610583] usb 3-1: cp210x converter now attached to ttyUSB3
[   18.535820] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB4
[   18.542643] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB5
[   18.548504] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB6
[   18.553115] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB7

ttyUSB4 to ttyUSB7 are ports for GSM modem.
And the last port ttyUSB7 is the port for AT command.