STM32F4
=======

Quadro-Copter steering and regulation with the STM32F4 Discovery board and some external sensors.

Prequisits
----------

For compile the _arm-toolchain_ is needed. Most easy installation goes with _summon-arm-toolchain_ from https://github.com/esden/summon-arm-toolchain

On Slackware you have to install +libftdi-0.20+ manually
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> wget http://www.intra2net.com/de/produkte/opensource/ftdi/TGZ/libftdi-0.20.tar.gz
> tar -xzf libftdi-0.20.tar.gz
> cd libftdi-0.20
> ./configure --prefix=/usr --libdir=/usr/lib[64]

On x64 systems it may give troubles with the x86 libusb version:
> vim ftdipp/Makefile

Change all _/usr/lib_ occurences to _/usr/lib64_

> make
> mkdir /tmp/libftdi
> make install DESTDIR=/tmp/libftdi
> cd /tmp/libftdi
> makepkg -l y -c n /tmp/libftdi-0.20-x64-1.tgz
> installpkg /tmp/libftdi-0.20-x64-1.tgz

Copy away _/tmp/libftdi-0.20-x64-1.tgz_ after to some "secure" place.

Install arm-toolchain
~~~~~~~~~~~~~~~~~~~~~
> git clone https://github.com/esden/summon-arm-toolchain.git /tmp/arm-toolchain
> cd /tmp/arm-toolchain
> ./summon-arm-toolchain PREFIX=/opt/arm-toolchain LIBSTM32_EN=1 CPUS=1
> [ go for a coffee ]

Note: On my system I always had to build with only one thread (CPUS=1), otherwise libgcc failed.

Update/rebuild arm-toolchain
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> cd /tmp/arm-toolchain
> git pull
> rm stamps/*.build
> ./summon-arm-toolchain PREFIX=/opt/arm-toolchain LIBSTM32_EN=1 CPUS=1
> [ go for a coffee ]