Dual-band Wi-Fi and dual-mode Bluetooth in single module

February 20, 2015 // By Graham Prophet
By u-blox, the ODIN-W262 module is suitable for both point-to-multipoint cable replacement and IoT applications that need advanced multiradio capabilities.

Designed for Internet-of-Things applications, the -40 °C to +85 °C temperature-range module makes adding wireless connectivity to any product quick and easy, and comes radio type-approved in countries across the world. A robust, built-in antenna provides flexibility with respect to the module’s installed position and orientation. Applications include cable replacement running in Wireless Multidrop and Extended Data Mode for advanced multipoint operation with several radios operating simultaneously.

ODIN-W262, measuring 14.8 x 22.3 x 4.5 mm, needs no external host. It is ready-to-use and comes complete with embedded driver, stack and application for wireless data transfer. The module supports multiple concurrent Wi-Fi (2.4 GHz and 5 GHz), Classic Bluetooth and Bluetooth low energy (v4.0) links to provide flexibility, and it is easily configured using AT-commands.

Future firmware upgrades will add micro access point, high-speed interfaces (such as RMII) and support for custom embedded applications. For example, the module will be able to act as a Wi-Fi access point or as a gateway between Wi-Fi and Bluetooth low energy sensors.

These numerous configuration options minimise inventory requirements and reduce design effort and costs because one module can be software-configured for use in a variety of products. For example, a manufacturer may want to offer products in either Wi-Fi or Bluetooth versions.

u-blox comments that concurrent Wi-Fi and Bluetooth has many uses. In retail applications, Bluetooth low energy may be used to detect the closest printer while data is sent to that printer over Wi-Fi or Bluetooth classic. In medical applications, a patient monitoring device may be supervised via Wi-Fi at a central location in the hospital, while local communication with nurses is carried out over Bluetooth. For such medical applications, the module complies with the IEC 60601-1-2 standard.

The EVK-W262U is an evaluation kit for the module. It uses a single USB connection for data and power and comes complete with the u-blox configuration tool for Windows. For applications where an external