Crate ev3_dc 

Low-level EV3 Direct command library. Library for direct command bytecode generation and basic direct reply parsing.

By itself, It can allocate memory, create bytecode packet, parsing reply and other utility functions. Only some ad-hoc functions are available in funcs. Other OpCode is documented at Firmware Developer Kit. This library cannot prevent value overflow for any specific OpCode, only the parameter and command itself.

More information about direct commands and bytecode is available at LEGO MINDSTORMS Firmware Developer Kit

Example

Show blinking green LED

use ev3_dc::{ Command, Encoding::*, encode };

let mut cmd = Command::new();
let mut byte = vec![0x84, 0x1B]; // OpUI_Write, LED
byte.extend(encode(LC0(0x04)).unwrap()); // Green flashing
cmd.bytecode = byte;
println!("SENT: {:02X?}", cmd.gen_bytes());
// and send actual bytes via HID, or Bluetooth, etc.

Modules

funcs

Command generation function. Not all command will be here, only some of them.

parser

Module for parsing direct reply

utils

Utility functions for ev3-dc

Structs

Command

The packets that get sent to EV3. Can contain more than 1 OpCode

Port

Port struct. Use defined PORT constant instead.

Enums

DataType

EV3 DataType.

Encoding

Parameter encoding

ValError

ev3_dc Error type

Constants

PID

USB ProductId of EV3

PORT

PORT Constants. Add them together to use multiple ports

VID

USB VendorId of EV3

Functions

encode

Encode value to parameter encoding. For encoding constant value or encoding address to variable directly. Use Command::allocate to encode variable without specifying pointer directly