The UDP and TCP packet protocol used by MRDT modular microcontrollers
Since the manifest.json is located in a different repository the steps for cloning and updating the repository are a bit different than usual. Everytime the manifest.json is updated, the update command listed below needs to be executed.
- Clone:
git clone --recurse-submodules https://gitlab.com/MissouriMRDT/RoveComm.git - Update:
git submodule update --init --recursive
The current implementation of RoveComm is for the Tiva C Microcontrollers. The ethernet libraries used are from the Energia project. It also currently supports the Teensy 4.1 Microcontroller. The ethernet libraries are NativeEthernet and NativeEthernetUdp from the Arduino add-on Teensyduino.
The RoveComm udp packet header is 5 bytes long:
- uint8_t rovecomm_version
- uint16_t data_id
- uint16_t data_count
- uint8_t data_type
The packet then countains a data_count number of data elements. The size of each element depends on the data type.
Due to memory limitations, the Tiva can only support 21,845 uint8_ts, 10,922 uint16_ts, 5461 uint32_ts, 5461 floats, or 2730 doubles at once.
Due to memory limitations, the Teensy can only support 32,767 uint8_ts, 16,383 uint16_ts, 8,191 uint32_ts, 8,191 floats, or 4,095 doubles at once.
Examples of how to implement RoveComm on the Tiva C Microcontroller and Teensy 4.1 are here.