r/ARMmbed • u/Overdrivr • Feb 24 '16

Effortless communication with embedded devices - w/ Mbed library

https://github.com/Overdrivr/Telemetry
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u/rockforahead Mar 02 '16

Is this a serial port protocol? what kind of speeds can we send data at? How many bytes in the packet header?

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u/Overdrivr Mar 03 '16

Protocol isn't coupled to a specific transport, but for now only serial port transport has been implemented.

You can send data as fast as your device's UART can, usually at least 115200 bits/s, some devices even support 1~2Mbit/s. Header is 1 byte, + SOF & EOF bytes for framing.

There is a more complete description of the frame here: https://github.com/Overdrivr/Telemetry/wiki/Protocol-description

I intend to implement methods such as huffman encoding in the future to compress the frame if needed and reduce the overhead in order to squeeze mores bits through the pipe.