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MRAP Protocol

Mayeryn product

Project description

Fully proprietary communication protocol in the UART interface and SPI used in Mayeryn devices. It was created out of the need for trouble-free communication between our ultrasonic sensors and the main management unit. The emphasis was placed on scalability of the solution and the possibility of using it between various devices.

Specifications

The protocol works in the Master-slave model typical for such solutions, which allowed for predictable device operation. An error control system was also implemented in the form of a checksum calculated with the CRC-16 / ARC algorithm. Communication is based on 8 bit asynchronous data transfer . Outgoing MRAP frame diagram:

SFFNADDRSIZEPAYLOADCRC
    Includes:
  • SF - starting frame
  • FN - frame number
  • ADDR - device address to which the message is to be sent
  • SIZE - field size
  • PAYLOAD - commands and parameters
  • CRC - a checksum to detect transmission errors

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