Design And Implementation Of Iot Service Gateway Based On Arm

The Internet of Things(IOT) is an important part of new generation of IT and new technology revolution, is the cause of the beginning and the cornerstone of the industry consolidation and the change of management technology, with the integration of IOT and WSN, a new opportunities has been brought for traditional such as smart home area monitoring industry. It can be organic organized equipment in the monitoring region by wireless in order to achieve a complete management system with overall perception. More concerned about the user experience, friendly interface, easy operation, and human liberation, interactive automation, intelligence is the core of innovation and the soul of the development of IOT.In this paper, a systematic discussion of the key technologies of IOT service gateway platform, which based on the IOT applications. The focus of the gateway hardware and software system layer, provide a embedded platform for development of smart home applications. In order to realize smart home systems in remote and short-range control, starting from the concept of IOT, a low-power and low-cost embedded gateway had been designed, to connect between based on the Zigbee protocol for WSN and based on TCP/IP protocol for the Internet in order to achieve the expansion and extension of the Internet. The host controller uses the ARM the the STM32F107VC of the Context-M3core microprocessor, with a reliable serial communication connection with the sensor network coordination and An external NIC PHY chip and the connection to the Internet. WEB login to the ARM service gateway to remote control WSN. In software design, the introduction of the embedded operating system uCOS-II management of system resources, and to achieve the basic functions of the TCP/IP to involve embedded communications protocol stack LwIP. the software using a hierarchical, modular software design method to increase flexibility of the system applications. Bottom-up procedure coding of all levels, to improve the speed of system development, also make it better layering. In order to achieve the data synchronization among the embedded Web server-side, short-range control terminals the WSN gateway, a communication and control application of a WSN was designed.Joint commissioning of hardware and software, and use a simple serial interaction program to simulate communication between the master module and coordinator,a remote web monitoring service was complemented by the dynamic interactive Web, which verifies the correctness of the service gateway design.