Bluetooth Smart SoCs link wearables to apps for WeChat users

December 09, 2015 // By Graham Prophet
Profile support in Dialog’s SmartBond development kit allows creation of tiny, energy-efficient wearables that communicate with WeChat apps over Bluetooth connectivity

Dialog Semiconductor’s support for WeChat’s communications protocol is in the form of its WeChat SDK. The kit enables developers to add energy-efficient Bluetooth connectivity between WeChat apps and wearables or other IoT devices. WeChat is now the world’s largest stand-alone messaging app with an estimated 600 million users at the end of Q2/2015, according to analysts. Its dramatic growth, both in China and other countries, is due in part to the many third-party apps that have been developed, making WeChat much more than just a messaging platform.

Dialog’s development kit includes a protocol stack for the WeChat communication layer. The SDK is based on the DA1458x family of SmartBond SoCs and enables developers to reduce the overall development time for connecting their products wirelessly to WeChat apps. WeChat users can then control wearable devices via the app and share information with friends over the platform.

DA1458x SoCs are highly integrated devices that combine a Bluetooth low energy radio with an ARM Cortex-M0 application processor. Intelligent power management circuitry is included and processor resources can be accessed via 32 GPIOs. This facilitates the development of fully hosted applications. The devices can be as small as 2.5 x 2.5 mm (WLCSP package) and they offer the lowest power consumption for Bluetooth Smart devices in production today, maximising battery life in every application. Peak current is less than 5mA.

SmartBond WeChat software development kit enables efficient coding, thanks to the optimised power profiler. It comes with the company’s SmartSnippets software development environment, which is based on Keil µVision tools.

Dialog Semiconductor;