Implementation of an Economical Web Server for Home Automation System Based on IR, Bluetooth and Ethernet Technology Dr.-Ing. Chao-Huang Wei Department of Electrical Engineering Southern Taiwan University

Outline 1. Foreword 2. Hardware Tools 3. Software Tools 4. Experiment Results 5. Conclusions and Future Works

The network connectivity of machine-to-machine (M2M) communication will be a primary market demand for embedded networking systems.The network connectivity of machine-to-machine (M2M) communication will be a primary market demand for embedded networking systems. Trend of Home Network There is a growing need to add network connectivity to more home devices.There is a growing need to add network connectivity to more home devices. The Forrester Research reports, by year 2010, up to 95% of the devices used to access the Internet are non-PC devices. By year 2020, the global thing-to- thing Internet (IOT) will be developed into a trillion- US-Dollar industry.The Forrester Research reports, by year 2010, up to 95% of the devices used to access the Internet are non-PC devices. By year 2020, the global thing-to- thing Internet (IOT) will be developed into a trillion- US-Dollar industry.

Requirements of Home Networks Noise Rejection Network has to allow for reliable communication. Requires preservation of data and synchronization of data lines. Bandwidth Home networks can contain many sensors and actuators. Sensor data can be generated at different rates. Connectivity Sensors have to be connected to processing units. Integration Network structures have to be integrated into buildings. Privacy and Security Home networks will transfer private and sensitive data.

Installation & Maintenance of Home Network & Networked Home Appliances Installation (Plug & Play) Allows devices to describe themselves. Allows remote inquiry of devices. Individual home/room identification.Installation (Plug & Play) Allows devices to describe themselves. Allows remote inquiry of devices. Individual home/room identification. Maintenance (Supported application code) Build-in basic function of device. External downloaded program. User altered control program.Maintenance (Supported application code) Build-in basic function of device. External downloaded program. User altered control program.

Emergency Handling Cutoff power supply when malfunction.Cutoff power supply when malfunction. The front door must not be locked when emergency condition in house occurs.The front door must not be locked when emergency condition in house occurs. The fire alarm must turn off all gas and electricity.The fire alarm must turn off all gas and electricity.

Types of Home Networking Wired 1.Phone Line Networking (HomePNA) 2. Power Line Networking (X10, CEBus, HomePlug, LonWorks) 3.Other wires (Ethernet, USB, IEEE1394 Firewire, I2C) 4. Wireless 1.WiFi 2.ZigBee 3.Bluetooth 4.Infrared

System Architecture

Web Controller Solution: 1.Single-chip Microcontroller with TCP/IP, 10/100M Fast Ethernet MAC/PHY, and flash memory. 2.The ASIX company (Taiwan) provides software libraries (incl. I2C, UART, Timer, TCP/IP Stack) and develop tolls for their AX110xx family. 3.RTOS support. Considerations: 1. Easy hardware and software developments. High to medium CPU performance, but low-cost. 2. High to medium CPU performance, but low-cost. 3. Enough I/O ports & interface supporting.

AX11005 Development Board

Functional Block Diagram of Embedded Ethernet Microcontroller

Application Examples of AX110xx

Peripherals to Web Controller Bluetooth Module UART Interface Humidity/Temperature Sensor Module I2C Interface Contact Sensor Module Infrared Remote Connection Infrared Signal from/to GPIO Ports

Software Modules of AX110xx The AX110xx software modules include CPU, Ethernet, S/W DMA, MS Timer, Local Bus, I2C, SPI, 1-Wire, CAN, UART2, PCA and two TCP/IP stacks (i.e. uIP and Lightweight IP).

TCP/IP Module Application Modules TCPIP Module // general interface TCPIP_Init(…), TCPIP_Bind(…), TCPIP_SetPppoeMode(…), TCPIP_GetIPAddr(), TCPIP_GetSubnetMask(), TCPIP_GetGateway(), TCPIP_SetIPAddr(…), TCPIP_SetSubnetMask(…), TCPIP_SetGateway(…), TCPIP_SetMacAddr(…), TCPIP_PeriodicCheck(…), TCPIP_AssignLowlayerXmitFunc(…), TCPIP_AssignPingRespFunc(…), TCPIP_DontFragment(…), TCPIP_Receive(…) // tcp interface TCPIP_TcpListen(…), TCPIP_TcpNew(…), TCPIP_TcpConnect(…), TCPIP_TcpKeepAlive(…), TCPIP_TcpClose(…), TCPIP_QueryTcpLocalPort(…), TCPIP_TcpSend(…) // uip interface uip_arp_ipin(), uip_arp_arpin(), uip_arp_out(), htons(…) TCPIP_GetRcvBuffer(), TCPIP_GetXmitBuffer(), TCPIP_SetRcvLength(…), TCPIP_GetXmitLength(), TCPIP_GetPayloadBuffer(), TCPIP_GetGwMacAddrFlag(), TCPIP_SetGwMacAddrFlag() Adapter Module

HTTP Protocol HTTP Protocol Sub-module void HTTP_Init() U8_T HTTP_NewConn(U32_T XDATA* pip, U16_T remotePort, U8_T socket) void HTTP_Event (U8_T id, U8_T event) void HTTP_Receive (U8_T XDATA* pData, U16_T length, U8_T conn_id) U8_T http_UserPost (U8_T XDATA* pData, U16_T length, U8_T fileId) void http_DivideHtmlFile (HTTP_SERVER_CONN XDATA* pHttpConn, U8_T id) U8_T http_NewConfig(void) Web page Sub-module void FSYS_Init() void fsys_InitPostRecord() U8_T FSYS_FindFile (U8_T XDATA* pFName) void (*fun_tbl[]) (void *pWebData)

Webpage Conversion to C Language

Web Page & Experiment Examples IR Receiver 1 (for DVD) IR Receiver 2 (for Lamp) Web Server Bluetooth

Conclusions and Future Works Applications for home networks will toward to Home Automation, Home Security, Home Healthcare and Home Entertainment, but also suitable for office. The web controller communicates to smart phone for easy control in house via Bluetooth. The user can control legacy home appliances and to receive sensor data to monitoring home status via infrared signal. The web controller provides webpage to the user for Internet access via Ethernet. An economical web controller for home networks has been developed in spite of hardware and software limitations.

Thanks for your attention!