Installation/Configuration Deprecated Point de vente CustomerDisplay install CustomerDisplay install

November 26, 2025 at 2:48 AM

CustomerDisplay install

  • Download and burn raspbian full : http://mirror.lagoon.nc/pub/downloads.raspberrypi.org/raspbian/images/
  • Mount card on host pc. Will mount 2 partitions : boot and system
  • Create empty file named ssh on boot partition in root folder
  • Edit config.txt
    • Uncomment hdmi_force_hotplug=1
    • Append line dtoverlay=dwc2
  • On system partition, create file /usr/bin/myusbgadget
    • chmod +x the file
    • Set content
#!/bin/bash -e

modprobe libcomposite

cd /sys/kernel/config/usb_gadget/
mkdir g && cd g

echo 0x1d6b > idVendor  # Linux Foundation
echo 0x0104 > idProduct # Multifunction Composite Gadget
echo 0x0100 > bcdDevice # v1.0.0
echo 0x0210 > bcdUSB    # USB 2.1

echo 0xEF > bDeviceClass
echo 0x02 > bDeviceSubClass
echo 0x01 > bDeviceProtocol

mkdir -p strings/0x409
echo "deadbeef00115599" > strings/0x409/serialnumber
echo "Isi.nc"        > strings/0x409/manufacturer
echo "PosCustomerScreen"   > strings/0x409/product

# mkdir -p functions/acm.usb0    # serial
mkdir -p functions/rndis.usb0  # network

mkdir -p configs/c.1
echo 250 > configs/c.1/MaxPower
ln -s functions/rndis.usb0 configs/c.1/
# ln -s functions/acm.usb0   configs/c.1/

# OS descriptors
echo 1       > os_desc/use
echo 0xcd    > os_desc/b_vendor_code
echo MSFT100 > os_desc/qw_sign

echo RNDIS   > functions/rndis.usb0/os_desc/interface.rndis/compatible_id
echo 5162001 > functions/rndis.usb0/os_desc/interface.rndis/sub_compatible_id

ln -s configs/c.1 os_desc

udevadm settle -t 5 || :
ls /sys/class/udc/ > UDC
  • On system partition, create file /usr/lib/systemd/system/myusbgadget.service
    • Set content
# /usr/lib/systemd/system/myusbgadget.service
 
[Unit]
Description=My USB gadget
After=systemd-modules-load.service
 
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/bin/myusbgadget
 
[Install]
WantedBy=sysinit.target
  • On system partition, edit file /etc/network/interfaces
    • Append content :
iface usb0 inet static
        address 192.168.42.1
        netmask 255.255.255.0
        broadcast 192.168.42.255
  • Or create file etc/network/interfaces.d/usb0 with same content