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The SSI ("Simple Sensor Interface") protocol is a simple communications protocol designed for data transfer between computers or user terminals and smart sensors. The SSI protocol is an Application layer protocol as in the OSI model. The SSI protocol has been developed jointly by Nokia, Vaisala, Suunto, Ionific, Mermit and University of Oulu. Currently SSI is being developed within the (Mimosa project ), part of the European Union Framework Programmes for Research and Technological Development. The SSI protocol is used in point-to-point communications over UART and networking nanoIP applications. SSI also provides polling sensors and streaming sensor data. For RFID sensor tags SSI specifies memory map for sensor data. The criteria for SSI protocol development are: * general purpose * simple – minimal overhead * small footprint on the server (sensor) side Sample implementation of the SSI protocol for MSP430 microcontrollers will be published as open source during August 2006 by Nokia. == SSI message structure == An SSI message consists of a 2-byte header and an ''n''-byte payload. The header consists of a one byte address (wildcard is '?', 0x3F in ASCII) and a one byte message/command type. The different possible values for the message/command type are presented in SSI v1.2 command base. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Simple Sensor Interface protocol」の詳細全文を読む スポンサード リンク
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