Wi-Fi™ Driver Package for Real-time OSes Now Available



Murata Manufacturing Co., Ltd.

President/ Statutory Representative Director: Tsuneo Murata


Murata Manufacturing Co., Ltd. has developed Wi-Fi™ driver software that enables Murata Wi-Fi™ modules to be used with µITRON*1 or other real-time OSes*2 (RTOSes) . The solution makes it easy to bring Wi-Fi™ to resource-constrained,*3 energy-efficient RTOS devices running at low clock speeds,*4 which opens the door for Wi-Fi™ in OSes other than relatively full-featured alternatives such as Linux®*5 and Android®.*6


Wireless LAN environments are now more common, even in homes, fueled in part by greater popularity of Wi-Fi™ in smartphones, portable game consoles, and other small, lightweight devices. At the same time, more Internet-based cloud services are launched every day. Network connectivity and use of network services on these devices has extended beyond Linux®, Android®, and other relatively full-featured OSes to the realm of embedded devices,*7 a field previously unrelated to this kind of wireless networking.

In response, Murata has developed Wi-Fi™ drivers compatible with the RTOS used in many of these small, resource-constrained embedded devices, providing a one-stop solution for hardware and software with Murata Wi-Fi™ devices.

Availability of the drivers makes implementation of sophisticated Wi-Fi™ functionality in embedded devices easier, faster, and more economical, demonstrating Murata's commitment to supporting Wi-Fi™ development.


  1. Designed for resource-constrained CPUs at low clock frequencies, yet compatible with the latest high-speed wireless specification (IEEE-802.11n) , for high-speed communication.
  2. In addition to client mode (for operation similar to that of a wireless extension handset), access point mode is included, for operation similar to that of the main wireless handset. Providing more robust security than ad hoc connectivity,*8 this mode enables easy connections from smartphones and support for an array of products and services.
  3. Supports WPA/WPA2*9 Personal encryption without additional software.
  4. Also supports WPS 2.0.*10 Wi-Fi™ certified, in conjunction with WPS products from Ubiquitous Corporation. Support is planned for other WPS 2.0-compatible products.
  5. Also supports Wi-Fi Direct™, enabling direct connection between Wi-Fi™ devices.
  6. The driver package consists of a Wi-Fi™ driver core and interfaces, which can be developed to suit the environment of use. Sample code for interfaces is also included.

    The driver package consists of a Wi-Fi™ driver core and interfaces, which can be developed to suit the environment of use. Sample code for interfaces is also included.

  7. Extended platform support is planned.
  8. Existing resources can be used while adding network connectivity to RTOS devices.
  9. Used with Murata Wi-Fi™ modules, offers an integrated (hardware+software) , one-stop solution.


  1. RTOS devices with a low-spec 32-bit CPU
  2. Wi-Fi™ functionality for machine-to-machine (M2M) devices
  3. RTOS digital still or video cameras, printers, home appliances, and so on

License Fees



(Micro Industrial TRON) :
An RTOS specification. Offers ample performance even with limited processing power and memory, enabling use even on low-performance computers.
*2 Real-time OS (RTOS) : An operating system that implements functions for real-time processing. Includes a scheduler to determine required processing time, as well as functions enabling execution within the allotted time even with multitasking.
*3 Resources: CPU processing speed and memory capacity required for computer operation.
*4 Clock: Signals that coordinate the timing of processing by circuitry that runs on a specific frequency, such as CPUs. The number of clocks per second is referred to as the clock speed or frequency, with a low value indicating a low clock frequency. Low clock frequency indicates limited processing power, while a high clock frequency indicates higher power.
*5 Linux®: A type of OS. Originally a computer OS, Linux® is now used in many mobile phones, digital appliances, and other embedded devices. Notable for its standard network functions and stability.
*6 Android®: General name for a platform mainly used in smartphones and tablet computers, including elements such as the OS, middleware, interfaces, and applications. Currently the leading smartphone OS in the U.S. and Japan.
*7 Embedded devices: Electronic devices with built-in computer systems designed to implement specific functionality.
*8 Ad hoc connection: A wireless LAN protocol. Devices communicate directly, without an intermediate access point.
*9 WPA/WPA2: Encryption methods established by the Wi-Fi Alliance, an industry organization involved in wireless LAN technology.
*10 WPS2.0: Encryption method established by the Wi-Fi Alliance. Enables easy configuration of connection and security settings for wireless LAN devices.

*Wi-Fi is a registered trademark of Wi-Fi Alliance.
*Android is a registered trademark of Google Inc.
*Linux is a registered trademark of Mr.Linux Torvalds.
*Wi-Fi Direct is a registered trademark of Wi-Fi Alliance.

Murata in Brief

Murata Manufacturing Co., Ltd. is a worldwide leader in the design, manufacture and sale of ceramic-based passive electronic components & solutions, communication modules and power supply modules. Murata is committed to the development of advanced electronic materials and leading edge, multi-functional, high-density modules. The company has employees and manufacturing facilities throughout the world. For more information, visit Murata's website at www.murata.com