Simple Sensor Interface protocol: Difference between revisions

Revision as of 10:09, 5 March 2011

Revision as of 12:59, 9 June 2011

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=== SSI v1.2 command base ===

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! Command byte

! Direction

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| Free data for custom purposes

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=== Point-to-point SSI ===

Point-to-point messaging with SSI can be done with SSI/UART. An SSI UART message consists of a 3-byte UART header, an SSI message as the payload and an optional [[CRC|Cyclic redundancy check]] [[checksum]]. The use of a checksum is defined by the SSI message/command type, with lower case commands indicating the use of CRC. The header consists of a start byte (0xFE), a 2-byte (total) length of the message and a 2-byte [[bitwise operation|bitwise]] [[NOT|Negation]] length to help identify the frame start.

=== Networking SSI ===