This is a template application for the STM32 ARM microcontrollers that compiles with GNU tools.

It serves as a quick-start for those who do not wish to use an IDE, but rather develop in a text editor of choice and build from the command line.

• all Builds the target ELF binary.
• program Flashes the ELF binary to the target board.
• debug Launches GDB and connects to the target.
• cube Downloads the most recent STM32Cube version from the ST website and extract it to cube.
• template Copies a simple example/template, startup code and a linker script from the cube to your src directory.
• clean Remove all files and directories which have been created during the compilation.

Before building, you must install the GNU compiler toolchain. I'm using the the gnu-none-eabi triple shipped with recent Debian and Ubuntu versions:

sudo apt-get install gcc-arm-none-eabi binutils-arm-none-eabi

You also might want to install some other libraries and debuggers:

sudo apt-get install openocd gdb-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib

Your source code has to be put in the src directory. Dont forget to add your source files in the Makefile.

First, make sure you have OpenOCD installed and in your path (see above). Recent versions already come with full support for the discovery and nucleus boards. Then connect your board, and load the application by saying:

make program

To load the program and debug it using GDB, simply use the debug target:

make debug

GDB connects to the board by launching OpenOCD in the background. See this blog post for info about how it works.

If you are not able to communicate with the Discovery board without root privileges you should add appropriate udev rules.