ams released the AS3911 NFC development kit and interface software stack, in order to provide a blueprint for a near-field communication (NFC) implementation in any microcontroller-based system.
NFC has already proved its popularity with consumers in applications such as contactless payments, and many OEMs are looking to add value to electronics products by providing a simple, secure, wireless NFC interface between a microcontroller and the outside world. This new development kit eliminates the need for the designer to implement a complete, proprietary software interface between a host microcontroller, its operating system and the NFC reader IC.
The software includes an NFC Controller Interface (NCI) stack, a standard-based modular firmware/software solution, operating from the hardware level up to the operating system. Developed in collaboration with Stollmann E+V GmbH, it manages the interaction between a microcontroller and any NFC/HF reader in the AS391x family from ams.
Fully compatible with the Android, Linux, Windows 7 and Windows 8 operating systems, the kit lets developers quickly and easily create NFC applications for multiple microcontrollers. The standard interface is suitable for any kind of NFC-enabled device, including routers, set-top boxes, automotive infotainment systems, consumer electronics devices and home appliances.
Because the NCI stack has a modular design, users can optimise it for their system, selecting only the features and functions required by their application. This means that designers can optimise for a minimal microcontroller processing overhead and memory usage, or for high performance and multi-protocol support.
The NCI supports all NFC protocols specified by the ISO standards organisation, as well as providing extended functionality for proprietary card systems. It also supports the automatic antenna tuning feature provided by ams’ AS391x family of NFC readers. The software stack is compatible with various physical interfaces including UART, SPI and I²C.
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