из коробки пока никак, ближе к релизу можно будет.
Пока или прокидывать порты или алиса, маруся и ибо с ними

EFR32MG21A020F1024IM32 EFR32MG21 Series 2 wireless SoCs include a 80 MHz ARM Cortex-M33  core, providing plenty of processing capability while a dedicated security core provides faster encryption, secure boot loading and debug access control. The device includes 1024 Flash, 96 RAM and is available in a QFN32 package. With up to + 20 dBm maximum power output and excellent receive sensitivity of -104 (250 kbps O-QPSK DSSS) dBm, the EFR32MG21A020F1024IM32 provides a robust RF link for reliable communications for Zigbee, Thread and multiprotocol applications and enables greater range and reliable RF communications. EFR32MG21A020F1024IM32 uses the same tools as EFR32MG Series 1, providing easy migration and fast time-to-market with development kits, SDKs, mobile apps and our patented network analyzer.