Silicon Labs (Austin, TX) [NASDAQ: SLAB] has introduced a comprehensive software solution designed to simplify the development of wirelessly connected smart meters for electricity, gas, water, and heat resources based on the proven Wireless M-Bus standard. Silicon Labs’ Wireless M-Bus software complements the company’s microcontroller (MCU) and wireless IC products and development kits for the rapidly growing smart metering and smart grid markets.

Wireless connectivity provides scalable, easy-to-deploy communications technology for many smart metering applications. The Wireless M-Bus specification, based on the European standard EN13757-4, specifies seamless sub-GHz RF communication between various types of smart utility meters, data concentrators, mobile readout devices, and heat meters (heat cost allocators). Wireless smart meter applications require long life for battery-powered meters such as water, gas, and heat meters. The Wireless M-Bus communications protocol requires very little overhead for the small amounts of data used by the meter, enabling battery life up to 15-20 years.

Silicon Labs’ Wireless M-Bus software solution includes a comprehensive sub-GHz wireless protocol stack that supports the S (868 MHz), T (868 MHz), C (868 MHz), and N (169 MHz) modes from the physical layer to the application layer. The protocol stack includes application programming interface (API)-based access for both application and extended data link layers. The software also includes an optional serial command interface to enable control of the Wireless M-Bus solution from an external host processor.

Available with the Wireless M-Bus software are:

  • Binary/object code format for Silicon Labs’ Si446x EZRadioPRO® sub-GHz RF transceivers.
  • Energy-friendly, ARM-based 32-bit EFM32™ Leopard Gecko MCU.
  • Physical layer configurations for S, T, C, and N modes for evaluation using Silicon Labs’ Wireless Development Suite (WDS).
  • Complete API documentation, physical layer scripts, test reports, a quick-start guide, and PC-based tools for evaluation.
  • Source code through a separate license agreement.

For more information visit