System Architecture Overview

Your BeagleConnect Freedom board has two IEEE 802.15.4 radio communication paths:

1. USB Interface: wpanusb driver
2. Serial Interface: bcfserial driver

Currently, bcfserial is active and working (wpan1, phy0), while wpanusb failed to probe the USB interface.

bcfserial Driver (Currently Active)

Architecture & Function

• Purpose: Serial-to-IEEE802.15.4 bridge driver
• Hardware Interface: UART (serial1-0) connected to CC1352 radio chip
• Author: Erik Larson (Statropy)
• Version: 0.1.1

How it Works

1. Device Tree Integration: Registers via device tree as beagle,bcfserial
2. Serial Communication:

• Communicates with CC1352 firmware over UART
• Translates between Linux IEEE 802.15.4 stack and serial protocol

3. MAC Layer Integration:

• Creates phy0 IEEE 802.15.4 PHY device
• Registers with Linux mac802154 subsystem
• Creates wpan1 network interface

Current Status on Your System

• PHY: phy0 (active)
• Interface: wpan1 (UP, extended_addr: 00:12:4b:00:29:c4:a8:76)
• 6LoWPAN: lowpan0@wpan1 (active for IPv6 over IEEE 802.15.4)
• Channel: 1 (906 MHz, SubGHz)