WeAct Studio STM32WB55CGU6 BLE 5.4 Zigbee Thread Matter Demo Board

You can program the board using the STM32CubeIDE or Arduino IDE with the STM32WB core. Connect via the USB Type-C port to enter DFU bootloader mode for initial firmware flashing. Use STM32CubeProgrammer or ST-Link utility to load precompiled binaries. The USB connection also provides a virtual COM port for serial debugging and AT command interaction with the wireless stack.

The board typically comes with a basic BLE stack firmware. To use Zigbee, Thread, or Matter, you must flash the corresponding wireless coprocessor binary (STM32WB_Copro_Wireless) via STM32CubeWB MCU Package. Protocol selection is configured in your application code by initializing the appropriate middleware (e.g., Zigbee Cluster Library, OpenThread stack) and building the project with the correct RF profile in STM32CubeMX.

In BLE advertising mode, the STM32WB55CGU6 can achieve currents below 10 µA in deep sleep with RAM retention. Active RF transmission at 0 dBm output power draws approximately 5-6 mA. You can optimize battery life by leveraging the chip's low-power stop modes and scheduling advertising intervals in firmware. External 3.3V supply or USB 5V input can be used, with internal LDOs regulating core voltage.

Utilize the built-in hardware cryptographic accelerator (AES) via the STM32Cube HAL libraries. Call HAL_CRYP_AESECB_Encrypt() or similar functions to encrypt payloads before transmission over BLE or Zigbee. For Matter commissioning, the hardware AES is used for secure device attestation and key derivation. Ensure you protect encryption keys in the chip's secure memory area (RSS) to prevent extraction.

Yes, with appropriate firmware, the STM32WB55CGU6 can run OpenThread stack to become a Thread Border Router when connected to a Wi-Fi/Ethernet backbone via its USB or SPI interface. For Matter, it can function as a Matter end device or, with sufficient resources, a Matter controller. Development requires integrating the OpenThread or Matter SDK from Connectivity Standards Alliance into your STM32CubeIDE project.