RCwiproc
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Wireless Protocol
The host will be able to send each robot velocity, direction, and shoot directives, at with the time alloted between each sample of the playing field by the overhead camera. In such way the enitre system (host, camera, and robot) will behave as a real-time system. The robot will send its current error status, battery voltage, wheel velocity, unique ID, and whether or not it has the ball to the host but not in real-time.
To Do
- Research protocols
- UDP (User Datagram Protocol)
- Protocol Book
- Determine mean time between updates to robots
- Estimate time for processor to generate a msg
- Determine time to send it at each baud rate
- Estimate time for robot to interpret msg
- Specify a custom protocol
- Evaluate and compare UDP to a custom protocol\
- Does protocol satisfy requirments?
- Real-Time
- Error Tolerant and recoverable
- Reliable
- Easy to implement and Debug
- Does protocol satisfy requirments?
Data Rate calculations
These will need to be redone.
Articles
- Linx article on protocol design
- Paper on the Cylical Redundancy Check error checking algorithm (CRC)
- Enitre book on protocol design, a bit dated though like 1990 dated
- Berkeley article on wireless protocol design. Gives a real world example of how to design a wireless protocol.
- Ohio University article. Details an intresting communications method
- Paper from Maxim on Manchester Encoding
- Berkeley PPT on errors and wireless
- Circuit Cellar discussion on Manchester Encoder/Decoder
