PCIe-Packet-Switch-4P
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Overview
Extended 4-Ch PCIe Gen 2 ×1 Expander, Stable Performance, Driver-Free
Features
- Extending 1-ch PCIe to 4-ch PCIe Gen 2 × 1 sockets, PCIe Gen 1 × 1 compatible
- Flexible power supply options: powered from either PCIe 12V, OR from 12V DC header
- Adopts ASM1184 controller, driver-free, plug and play
- Not allow direct plugging onto the PC motherboard
Note
- When connecting to Compute Module 4 PoE 4G Board or the Compute Module 4 PoE 4G Board, no external power adapter is required.
- This adapter does not require a driver when using it except the PCIe devices.
- Max speed of the adapter is 500Mbps
- The module should be powered by a 12V
- The maximum output current of each PCIe interface 3.3V power supply must be less than 1.5A.
Supported Device
Support list:click here
For other devices, you need to rebuild the kernel
Build Kernel
You can directly refer to:Click it
Ubuntu PC is required to build the kernel
Hereby environment:Ubuntu-20.04.2.0-desktop-amd64 :
- Set in Ubuntu PC
Install dependencies
sudo apt install git bc bison flex libssl-dev make libc6-dev libncurses5-dev
Install cross-compilation tools
sudo apt install neovim wget https://releases.linaro.org/components/toolchain/binaries/7.5-2019.12/aarch64-linux-gnu/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.xz
Add the line export PATH=$PATH:~/gcc-linaro/bin to .bashrc
nvim ~/.bashrc
Update the environment parameters
source ~/.bashrc
Clock the linux repo
git clone --depth=1 https://github.com/raspberrypi/linux
Generate the .config file
cd linux make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- bcm2711_defconfig
Configure the file and add the driver
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- menuconfig
Build the kernel
make -j8 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image modules dtbs
- Configure Raspberry Pi
- Set the password
sudo su passwd
Modify sshd_config file:
sudo nano /etc/ssh/sshd_config
PermitRootLogin prohibit-password to #PermitRootLogin yes restart Raspberry Pi
sudo reboot
- Set in Ubuntu PC:
sudo sshfs [email protected]:/ /mnt/pi-ext4 sudo sshfs [email protected]:/boot /mnt/pi-fat32 #192.168.x.x should be the IP of Raspberry Pi sudo env PATH=$PATH make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- INSTALL_MOD_PATH=/mnt/pi-ext4 modules_install sudo cp arch/arm64/boot/Image /mnt/pi-fat32/kernel8.img sudo cp arch/arm64/boot/dts/broadcom/*.dtb /mnt/pi-fat32/ sudo cp arch/arm64/boot/dts/overlays/*.dtb* /mnt/pi-fat32/overlays/ sudo cp arch/arm64/boot/dts/overlays/README /mnt/pi-fat32/overlays/ sudo apt install make
If you get the read: Connection reset by peer error, please detect the ssh public key and test it again
ssh-keygen -f "/root/.ssh/known_hosts" -R 192.168.x.x #192.168.x.x should be the IP of the Raspberry Pi
Software