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Table of contents

Build

Linux

Run shell script build.sh to build for MK3 and flash with Sli3er.
If you have different printel model, follow step 2.b from Windows build first.
If you wish to flash from Arduino, follow step 2.c from Windows build first.

The script downloads Arduino with our modifications and Rambo board support installed, unpacks it into folder PF-build-env-<version> on the same level, as your Prusa-Firmware folder is located, builds firmware for MK3 using that Arduino in Prusa-Firmware-build folder on the same level as Prusa-Firmware, runs secondary language support scripts. Firmware with secondary language support is generated in lang subfolder. Use firmware.hex for MK3 variant. Use firmware_<lang>.hex for other printers. Don't forget to follow step 2.b first for non-MK3 printers.

Windows

Using Arduino

note: Multi language build is not supported.

1. Development environment preparation

a. install "Arduino Software IDE" for your preferred operating system
https://www.arduino.cc -> Software->Downloads
it is recommended to use version "1.8.5", as it is used on out build server to produce official builds.
note: in the case of persistent compilation problems, check the version of the currently used C/C++ compiler (GCC) - should be 4.8.1; version can be verified by entering the command
avr-gcc --version
if you are not sure where the file is placed (depends on how "Arduino Software IDE" was installed), you can use the search feature within the file system
note: name collision for "LiquidCrystal" library known from previous versions is now obsolete (so there is no need to delete or rename original file/-s)

b. add (UltiMachine) RAMBo board into the list of Arduino target boards
File->Preferences->Settings
into text field "Additional Boards Manager URLs"
type location
"https://raw.githubusercontent.com/ultimachine/ArduinoAddons/master/package_ultimachine_index.json"
or you can 'manually' modify the item
"boardsmanager.additional.urls=....."
at the file "preferences.txt" (this parameter allows you to write a comma-separated list of addresses)
note: you can find location of this file on your disk by following way:
File->Preferences->Settings ("More preferences can be edited in file ...")
than do it
Tools->Board->BoardsManager
from viewed list select an item "RAMBo" (will probably be labeled as "RepRap Arduino-compatible Mother Board (RAMBo) by UltiMachine"
note: select this item for any variant of board used in printers 'Prusa i3 MKx', that is for RAMBo-mini x.y and EINSy x.y to
'clicking' the item will display the installation button; select choice "1.0.1" from the list(last known version as of the date of issue of this document)
(after installation, the item is labeled as "INSTALLED" and can then be used for target board selection)

c. modify platform.txt to enable float printf support:
add "-Wl,-u,vfprintf -lprintf_flt -lm" to "compiler.c.elf.flags=" before existing flag "-Wl,--gc-sections"
example:
"compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections"

2. Source code compilation

a. place the source codes corresponding to your printer model obtained from the repository into the selected directory on your disk
https://github.com/prusa3d/Prusa-Firmware/

b. In the subdirectory "Firmware/variants/" select the configuration file (.h) corresponding to your printer model, make copy named "Configuration_prusa.h" (or make simple renaming) and copy it into "Firmware/" directory.

c. In file "Firmware/config.h" set LANG_MODE to 0.

run "Arduino IDE"; select the file "Firmware.ino" from the subdirectory "Firmware/" at the location, where you placed the source codes
File->Open
make the desired code customizations; all changes are on your own risk!

select the target board "RAMBo"
Tools->Board->RAMBo
note: it is not possible to use any of the variants "Arduino Mega …", even though it is the same MCU

run the compilation
Sketch->Verify/Compile

upload the result code into the connected printer
Sketch->Upload

or you can also save the output code to the file (in so called HEX-format) "Firmware.ino.rambo.hex":
Sketch->ExportCompiledBinary
and then upload it to the printer using the program "FirmwareUpdater"
note: this file is created in the directory "Firmware/"

Using Linux subsystem under Windows 10 64-bit

notes: Script and instructions contributed by 3d-gussner. Use at your own risk. Script downloads Arduino executables outside of Prusa control. Report problems there. Multi language build is supported.

  • follow the Microsoft guide https://docs.microsoft.com/en-us/windows/wsl/install-win10 You can also use the 'prepare_winbuild.ps1' powershell script with Administrator rights
  • Tested versions are at this moment

    • Ubuntu other may different

    • After the installation and reboot please open your Ubuntu bash and do following steps

    • run command apt-get update

    • to install zip run apt-get install zip

    • add few lines at the top of ~/.bashrc by running sudo nano ~/.bashrc

      export OS="Linux" export JAVA_TOOL_OPTIONS="-Djava.net.preferIPv4Stack=true" export GPG_TTY=$(tty)

      use CRTL-X to close nano and confirm to write the new entries

    • restart Ubuntu bash Now your Ubuntu subsystem is ready to use the automatic PF-build.sh script and compile your firmware correctly

Some Tips for Ubuntu

  • Linux is case sensetive so please don't forget to use capital letters where needed, like changing to a directory
  • To change the path to your Prusa-Firmware location you downloaded and unzipped
    • Example: You files are under C:\Users\<your-username>\Downloads\Prusa-Firmware-MK3
    • use under Ubuntu the following command cd /mnt/c/Users/<your-username>/Downloads/Prusa-Firmware-MK3 to change to the right folder

Compile Prusa-firmware with Ubuntu Linux subsystem installed

  • open Ubuntu bash
  • change to your source code folder (case sensitive)
  • run ./PF-build.sh
  • follow the instructions

Using Git-bash under Windows 10 64-bit

notes: Script and instructions contributed by 3d-gussner. Use at your own risk. Script downloads Arduino executables outside of Prusa control. Report problems there. Multi language build is supported.

Compile Prusa-firmware with Git-bash installed

  • open Git-bash
  • change to your source code folder
  • run bash PF-build.sh
  • follow the instructions

3. Automated tests

Prerequisites

c++11 compiler e.g. g++ 6.3.1

cmake

build system - ninja or gnu make

Building

Create folder where you want to build tests.

Example:

cd ..

mkdir Prusa-Firmware-test

Generate build scripts in target folder.

Example:

cd Prusa-Firmware-test

cmake -G "Eclipse CDT4 - Ninja" ../Prusa-Firmware

or for DEBUG build:

cmake -G "Eclipse CDT4 - Ninja" -DCMAKE_BUILD_TYPE=Debug ../Prusa-Firmware

Build it.

Example:

ninja

Runing

./tests

4. Documentation

run doxygen in Firmware folder