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elastic-beam

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Power Controller for Energenie Powerstrip

github.com/amoriello/elastic-beam

amoriello/elastic-beam

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BUILD FOR RASPBERRY ==================== step1 : build the cross compiler with a recent GCC : ---------------------------------------------------- Source : http://www.bootc.net/archives/2012/05/26/how-to-build-a-cross-compiler-for-your-raspberry-pi/ (Thx!) 1 : Download crosstool-ng from the project web site. I’ve used version 1.15.2 as that was the latest when I wrote this. 1.1 : sudo apt-get install build-essential gperf bison flex texinfo gawk libtool automake libncurses5-dev subversion 2 / Unpack the tarball and cd into the unpacked directory, then run ./configure --prefix=/opt/cross. You can pick somewhere else instead of /opt/cross but that’s where I like to keep it. 3 : Run make and sudo make install. 4 : Make sure /opt/cross/bin is in your $PATH. 1 : Create a directory somewhere in your home directory that crosstool-ng will use as a staging ground. This will contain your toolchain configuration, downloaded files, and intermediary build results. This is not where your final toolchain will end up, and does take up quite a lot of space (3.5GB and up for me). cd into your chosen directory. 2 : Run ct-ng menuconfig. You should see the ct-ng configuration menu. 3 : Go into Paths and misc options. Enable Try features marked as EXPERIMENTAL. This is important. 4 : While you’re there you may want to change your Prefix directory. I like to put all my toolchains in /opt/cross/x-tools/${CT_TARGET} instead of ${HOME}/x-tools/${CT_TARGET}. 5 : Go back to the main menu and select Target options. 6 : Change the Target architecture to arm. Leave Endianness set to Little endian and Bitness set to 32-bit. 7 : Go back to the main menu and select Operating system (skip Toolchain options, the defaults are fine). 8 : Change Target OS to linux. 9 : Go back to the main menu and select Binary utilities. 10 : Change binutils version to 2.21.1a or whichever is the latest that isn’t marked as experimental. Probably unnecessary but I prefer this. 11 : Go back to the main menu and select C compiler. 12 : Enable the Show Linaro versions option. 13 : In the gcc version field, choose the linaro-4.6-2012.04 (EXPERIMENTAL) compiler. You’re free to choose a different one but I know this one works well. I do recommend the Linaro versions over the vanilla ones for the RPi. 13.1 : Activate C++ 14 : All the other settings are fine left at their default values. Exit the configuration tool and save your changes. 15 : Run ct-ng build (<- permission issues... chwon -R my_user:my_user /opt/cross). 16 : Go away and make a coffee, etc… This bit will take some time. 17 : You should end up with a freshly baked arm compiler ready for building kernels (and other things) for your Raspberry Pi in your Prefix directory you chose above. 18 : Just add your compiler directory to your $PATH and start compiling. If you used my preferred prefix directory, you would want to add /opt/cross/x-tools/arm-unknown-linux-gnueabi/bin. Step2 : Download and build the libusb last version : ---------------------------------------------------- Download libusb 1.0.9 http://www.libusb.org/ extract source code in the_project_dir/src/power_controller/third_party/libusb/ cd the_project_dir/src/third_party/libusb/ ./configure --host=arm-unknown-linux-gnueabi --prefix=`pwd` && make && make install Step3 : Build the project : ---------------------------- cd the_project_dir/ mkdir -p build/rpi cd build/rpi cmake -G "Unix Makefiles" -D CMAKE_TOOLCHAIN_FILE=../../toolchains/raspberry_pi.cmake ../.. make