C/C++ for EV3. Improved from https://github.com/c4ev3.
- Clone this repo with
git cloneand enter the repo root directory. - Get the toolchain from https://github.com/c4ev3/C4EV3.Toolchain/releases
- Go ahead and unpack it, then keep it somewhere. You may want to
export PATH='path/to/bin'directly to the bin folder to be able to easily call the compilers. - Link the entire
path/to/toolchain/arm-linuxfolder to/opt/cross/arm-linuxif on macOS, (unconfirmed for linux). - Get the submodules
ev3duderandEV3-APIby doinggit submodule init && git submodule update. cdinto theev3duderdirectory and dogit submodule initandgit submodule update hidapi.- While in the
ev3duderdirectory, runmake. - Go back to this repo root directory, and
cdtoEV3-API/APIand runmake.
Note: if make fails, update the Makefile to not use any hardcoded values, or use the correct names.
You can compile and upload C++ code to your EV3 brick by following the instructions below. You may also view the API Documentation in the wiki to get started on writing code.
Here's an example program that displays Hello World on the LCD panel of your EV3.
#include <ev3.h>
int main() {
InitEV3();
LcdPrintf(0, "Hello World!");
while (!ButtonIsDown(BTNEXIT)) {
Wait(100);
}
FreeEV3();
}
To compile, upload and run your code to ev3, either:
- Use the
ev3build,ev3buildUploadorev3Uploadscripts. Do not move them. Run them without arguments to see what arguments they take. Feel free to create aliases; they work anywhere as long as they stay where they are.
or:
-
To compile your code, run
arm-none-linux-gnueabi-g++ "path/to/cpp-file" -L"path/to/EV3-API/API/" -lev3api -I"path/to/EV3-API/API/" -static -s -Os -o "path/to/binary". -
To upload and run your code, use the
ev3duderbinary fromev3duderrepo. Feel free to create an alias.
$NAME="helloworld" #project name
#Upload
ev3duder exec "rm -r ../prjs/$NAME/" # remove existing project if it exists
ev3duder up "local/path/to/binary" "../prjs/$NAME/$NAME" # copy binary to ev3
ev3duder mkrbf "../prjs/$NAME/$NAME" "$NAME.rbf" # make a rbf file and copy it to local storage
ev3duder up "$NAME.rbf" "../prjs/$NAME/$NAME.rbf" # upload the rbf file
#Run
ev3duder run "../prjs/$NAME/$NAME.rbf"