Raspberry PI with 5G module.

Raspberry PI OS is the free operating system and recommended operating system for normal use on a raspberry. Thence we use the raspberry pi 4 B+ as a client of devices.

The user should control the raspberry pi via ssh or xsrdp by hostname and based on the raspberry pi to control and verify the DUT’s functions.



The Architecture:

Currently, we use the wireless interface of the raspberry pi to access the testing network domain. After executing the test they automatically upload the status to JIRA, also connecting the USB interface to the device.

The raspberry pi supports two UARTs (GPIO 14 & 15). when the device provides the serial console, we use it for debugging.

The Raspberry Pi installed programs list and server setup guide.

  1. SSH
    enable the SSH services.

    pi@raspberrypi-xs5g03:~ $ sudo raspi-config
select "3. Interface Options" and choose "I2 SSH" to enable the SSH

  2. VNC
    enable the VNC server

    pi@raspberrypi-xs5g03:~ $ sudo raspi-config
select "3. Interface Options" and choose "I3 VNC" to enable the VNC

  3. Xrdp
    install the xrdp and add a new user for this service.

    root@Raspbian:~# apt-get install xrdp
root@Raspbian:~# reboot
root@Raspbian:~# useradd -m atd　#-m參數為新增使用者建立家目錄 
root@Raspbian:~# passwd atd #pw XSlinux123

  4. tftp server / ftp server
    Installing the tftpd server.

    sudo systemctl status tftpd-hpa

    check the tftpd status

    pi@raspberrypi-xs5g03:~ $ sudo service vsftpd status
vsftpd.service - vsftpd FTP server
     Loaded: loaded (/lib/systemd/system/vsftpd.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2022-10-27 13:45:45 CST; 1min 22s ago
    Process: 2275 ExecStartPre=/bin/mkdir -p /var/run/vsftpd/empty (code=exited, status=0/SUCCESS)
   Main PID: 2276 (vsftpd)
      Tasks: 1 (limit: 4915)
        CPU: 16ms
     CGroup: /system.slice/vsftpd.service
             └─2276 /usr/sbin/vsftpd /etc/vsftpd.conf

Oct 27 13:45:45 raspberrypi-xs5g03 systemd[1]: vsftpd.service: Succeeded.
Oct 27 13:45:45 raspberrypi-xs5g03 systemd[1]: Stopped vsftpd FTP server.
Oct 27 13:45:45 raspberrypi-xs5g03 systemd[1]: Starting vsftpd FTP server...
Oct 27 13:45:45 raspberrypi-xs5g03 systemd[1]: Started vsftpd FTP server.

  5. web server (for WebUI direct)
    Installing Apache:

    pi@raspberrypi:~ $sudo apt-get update
pi@raspberrypi:~ $sudo apt-get install apache2 -y

    Configure the default web page:

    pi@raspberrypi:~ $cd /var/www/html
pi@raspberrypi:~ $ls -la

  6. go language
    Installing the golang

    pi@raspberrypi:~ $ sudo apt-get install golang
pi@raspberrypi:~ $ go version
go version go1.15.15 linux/arm

  7. adb
    Installing the adb 

pi@raspberrypi:~ $ sudo apt-get update
pi@raspberrypi:~ $ sudo apt-get install adb android-sdk-platform-tools-common
ppi@raspberrypi-xs5g03:~ $ adb --version
Android Debug Bridge version 1.0.41
Version 28.0.2-debian
Installed as /usr/lib/android-sdk/platform-tools/adb

Verify the adb function.

pi@raspberrypi:~ $ lsusb
Bus 002 Device 002: ID 0e8d:7129 MediaTek Inc. USB DATA CARD
pi@raspberrypi-xs5g03:~ $ adb devices
* daemon not running; starting now at tcp:5037
* daemon started successfully
List of devices attached
351488270000880 device
pi@raspberrypi:~ $ adb shell

8. Enable the UART port.

launch the raspi-config

pi@raspberrypi:~ $ sudo raspi-config

Turn on the serial port.

Install the termial “minicom”

pi@raspberrypi:~# apt-get update 
pi@raspberrypi:~# apt-get install minicom

Launch the Serial console port:

pi@raspberrypi:~# sudo minicom -D /dev/ttyUSB4 -b 921600

For XS5G03/04:

Auto add XS5G03/04 modules on raspberry pi:

  • Add a udev rules file that contains the USB configuration.

pi@raspberrypi:~ $ sudo vim /etc/udev/rules.d/51-android.rules
SUBSYSTEM=="usb", ATTR{idVendor}=="0e8d", ATTR{idProduct}=="7127", MODE="0666", GROUP="plugdev", SYMLINK+="android%n", RUN+="/bin/sh -c 'echo "0e8d 7129" > /sys/bus/usb-serial/drivers/generic/new_id'"

  • Crate a USB serial configuration file

pi@raspberrypi:~ $ sudo vim /etc/modules-load.d/usbserial.conf

usbserial

  • Disable the Modem Manager to release /dev/ttyUSB4 (MD AT port)

systemctl disable ModemManager.service
systemctl stop ModemManager.service

  • Check the Modem Manager status. 

systemctl list-dependencies multi-user.target | grep Modem

  • Reboot the raspberry.

  • Check the USB devices information.

pi@raspberrypi:~ $lsusb
Bus 002 Device 002: ID 0e8d:7129 MediaTek Inc. USB DATA CARD

  • View the network interfaces

pi@raspberrypi:~ $ifconfig
....
wwan0: flags=4291<UP,BROADCAST,RUNNING,NOARP,MULTICAST>  mtu 1500
        inet 169.254.26.41  netmask 255.255.0.0  broadcast 169.254.255.255
        inet6 fe80::3abc:c06e:2352:d2b0  prefixlen 64  scopeid 0x20<link>
        ether 26:c9:17:59:46:25  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2818  bytes 1021241 (997.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

  • Launch the Serial console port:

pi@raspberrypi:~# sudo minicom -D /dev/ttyS0 -b 921600

Port /dev/ttyUSB4

Press CTRL-A Z for help on special keys


+ESIMS: 1,29

+ESIMS: 0,1

+ESIMS: 0,11
at
OK

Manual add XS5G03/04 modules on a raspberry pi: 

pi@raspberrypi:~ $ ls /dev/tty*
pi@raspberrypi:~ $ sudo modprobe usbserial
pi@raspberrypi:~ $ sudo chmod u+w /sys/bus/usb-serial/drivers/generic/new_id
pi@raspberrypi:~ $ sudo echo "0e8d 7129" > /sys/bus/usb-serial/drivers/generic/new_id
pi@raspberrypi:~ $ ls /dev/ttyUSB*
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3  /dev/ttyUSB4  /dev/ttyUSB5  /dev/ttyUSB6  /dev/ttyUSB7
pi@raspberrypi:~ $ minicom -b 115200 -D /dev/ttyUSB3

Reference information:

Raspberry Pi setup part:

reference : https://www.raspberrypi.com/products/raspberry-pi-4-model-b/

https://www.circuitbasics.com/introduction-to-web-servers/

UART Part:

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