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Borgware-2D
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===========
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Firmware for AVR based two-dimensional LED matrices, especially the
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[Blinken Borgs](http://www.das-labor.org/wiki/Blinken_Borgs) from
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[Das LABOR](http://das-labor.org/index.en.php).
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Main platform is the [Borg16](http://www.das-labor.org/wiki/Borg16) construction
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kit. Other supported platforms are the
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[LED Brett](http://www.hackerspace-ffm.de/wiki/index.php?title=LedBrett)
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projector from [Hackerspace FFM](http://www.hackerspace-ffm.de), the
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[ELO Ping-Pong Board](http://www.elo-web.de/elo/mikrocontroller-und-programmierung/ping-pong/das-franzis-pingpong)
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or the [LoL Shield](http://jimmieprodgers.com/kits/lolshield/) from Jimmie P.
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Rodgers.
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Animations
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----------
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[Animated GIF (3.5 MB)](/doc/img/borg_anim.gif)
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Games
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-----
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* Tetris
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* Classic: Standard Tetris Clone
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* First Person Tetris: Rotate the bucket instead of the Tetromino.
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* Bastet: Dices the worst the possible Tetromino the whole time.
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* Snake
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* Breakout
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* Space Invaders
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Build
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=====
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Supported build platforms are Linux, FreeBSD, NetBSD and Windows (via Cygwin).
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Due to customized linker scripts, simulator support is currently limited to x86
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and x86_64 archs. Following dependencies have to be met:
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Linux / FreeBSD / NetBSD
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------------------------
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Package names are based on Debian/Ubuntu repositories. Please adapt the names
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according to your Linux distribution (or BSD for that matter).
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* build-essential (pulls in an ordinary gcc build tool chain for the host)
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* bc
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* make (gmake on FreeBSD)
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* libncurses5-dev
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* gcc-avr
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* avr-libc
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* binutils-avr
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* avrdude
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* freeglut3-dev
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* bash (note to the BSD folks: bash is required for the config tool)
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Windows
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-------
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* AVR GCC toolchain for Windows, choose your poison:
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* [WinAVR](http://winavr.sourceforge.net)
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* already includes [avrdude](http://www.nongnu.org/avrdude/)
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* installer offers to add the toolchain to the system path
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* straight forward download from SourceForge
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* project abandoned in 2010, therefore heavily outdated (avr-gcc 4.3.3)
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* [Atmel AVR Toolchain for Windows](http://www.atmel.com/tools/atmelavrtoolchainforwindows.aspx)
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* actively maintained, therefore fairly up to date
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* homepage nags you with rather awkward registration process before download
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* you have to add the toolchain to the system path manually
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* avrdude is not included (but it is possible to install WinAVR in parallel)
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* [Cygwin(64)](http://www.cygwin.com/)
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* bc
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* make
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* gcc-core
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* gdb (in case you want to debug your code in the simulator)
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* libncurses-devel (Cygwin)
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* libncursesw-devel (Cygwin64)
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* [libusb-win32](http://sourceforge.net/apps/trac/libusb-win32/wiki) in case you
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want to use an USBasp programmer device with avrdude
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Configure
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---------
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Open a (Cygwin) terminal, change to your checkout directory and type:
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> make menuconfig
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In case you build on BSD, just use 'gmake' instead of 'make'. This starts an
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Ncurses based text interface for configuring certain aspects of your target
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platform. After a fresh checkout, the first thing you do is to load a profile
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with sane defaults. In the menuconfig interface, select 'Load a Default
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Configuration' and choose a preset. After hitting enter, the main menu returns
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immediately. You can either tune your configuration or just exit (choose 'Yes'
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at the confirmation dialog to save your stuff).
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Be careful if you use an IDE like Eclipse to manage the build, as
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integrated terminal emulators tend to choke on Ncurses generated output.
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Make sure that 'make menuconfig' has been run at least once in an ordinary
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terminal emulator after a fresh checkout or after issuing 'make mrproper'.
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Note: Always use 'make clean' after changing something in the menu, because
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subsequent builds may be broken if you don't.
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Compile
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-------
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To build for the actual target platform, just type:
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> make
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This yields an 'image.hex' file which you can flash to your AVR device.
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If you want to test and debug your code within a GUI application, you can use
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the simulator:
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> make simulator
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Again, use 'gmake' instead of 'make' on BSD.
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You can start the simulator by typing ./borgsim(.exe)
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Simulator Handling
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------------------
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Please keep in mind that the simulator is NOT an emulator. All it does is
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compile the source code to a native host application so you can step through
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your C-Code with an ordinary host debugger. The GUI thread reads the simulated
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frame buffer every 20ms (40ms on Windows) and draws its contents.
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Joystick directions are simulated by the WASD keys and SPACE acts as the fire
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button. The OpenGL based simulator (Linux/FreeBSD) enables you to adjust the
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viewing angle of the LED matrix via the arrow keys (not available on Windows).
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