🛠 Deploying an Industrial IoT Gateway on BPI-5202

Objectifs

This advanced tutorial aims to configure the BPI-5202 as a robust industrial IoT gateway. You will learn to isolate industrial networks (CAN/RS485) from management networks (Ethernet), secure data via integrated encryption chips, and optimize SSD storage for event logging.

Matériel nécessaire

• BPI-5202 Board (Loongson 2K1000LA, 4 GB DDR3)
• Certified DC 24V Power Supply
• Ethernet Cables (1x Cat6 for 1000M, 1x Cat5e for 100M)
• USB-to-CAN and USB-to-RS485 converter modules (or use isolated ports directly)
• Compatible SSD (M.2 or 2.5")
• Development PC with SSH access

Étapes

``bash sudo ip addr add 192.168.10.1/24 dev eth1 sudo ip link set eth1 up ``

``bash sudo modprobe can sudo ip link set can0 up type can bitrate 500000 ``

``bash sudo cryptsetup luksFormat /dev/sda2 ``

1. System Installation: Flash Loongnix or KylinOS V10 onto the SSD. Ensure partitioning reserves 2 GB for /var/log.
2. Network Configuration: Configure eth0 (1000M) for management and eth1 (100M) for industrial data. Disable DHCP on eth1 for static IP.
3. Industrial Bus Activation: Load kernel modules for serial and CAN interfaces. Verify presence of /dev/ttyS* and /dev/can0.
4. Data Security: Use SMEC98SP chips to generate encryption keys. Configure dm-crypt to encrypt sensitive data partitions.
5. Service Deployment: Install an MQTT broker (e.g., Mosquitto) configured to listen on eth0 and publish data from CAN/RS485 sensors.

Vérification

Test connectivity with ping 192.168.10.2. Send a CAN frame via cansend can0 123#DEADBEEF and verify reception on a slave node. Confirm logs are written to the encrypted SSD without I/O errors.

Pour aller plus loin

Explore using the 20-pin GPIO port to add isolated digital inputs. Integrate a 4G module for network redundancy and configure a hardware watchdog for automatic recovery from software crashes.