| Smart home is a home network with diversification of forms of structure which come out in order to meet modern family life, which consists of smart home gateway, lighting system, networked appliances, and measurement instruments. Home gateway is the core of the smart home which in charge of coordination of the communications between different home terminal devices, the centralized control of appliances, Internet access, Remote Monitoring and so on. With the rapid development of embedded wireless technology and communication technology,smart home Gateway gradually turn to adopt embedded system as the hardware platform and wireless communication to form the smart home network.The thesis proposes a specific program to realize a wireless embedded smart home gateway. The gateway adopts S3C2410 as the central processor, connected to the internal home network by Bluetooth and to the external network through Ethernet and GSM module.The thesis first introduces the system struture of the gateway,then concentrate on description of the design and realization of the minimum system, serial port expansion module, Ethernet interface module. The minimum system includes central processor module, SDRAM module and NANDFLASH module.The serial port expansion module adopts the serial port expansion chip TL16C752B to derive two full-function serial ports to connect to bluetooth module and GSM module. The ethernet module adopts the Ethernet control chip DM9000A which is 10/100M self-adaptive.System functional verification demonstrates that the minimum system can successfully run the downloaded program, store the program after power off and support online debugging, the serial ports devired by expansion can successfully transmit and receive serial data, and the Ethernet module can successfully transmit and receive IP packets.The hardware platform implemented provides full functions for upper-layer development and reserches, which makes the follow-up development easy. |
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