README.md

stm32f103 projects

libopencm3-based software projects for generic stm32f103c8t6 board

Build libopencm3 and projects on Windows:

• Clone projects repo:

git clone https://github.com/metametaclass/stm32f103_projects

• init libopencm3 submodule:

git submodule init
git submodule update

• download gcc-arm embedded toolchain: https://launchpad.net/gcc-arm-embedded

  (e.g. https://launchpad.net/gcc-arm-embedded/5.0/5-2016-q2-update/+download/gcc-arm-none-eabi-5_4-2016q2-20160622-win32.zip)

• unpack gcc-arm-XXXX.zip somewhere

• download and install MSYS: http://www.mingw.org/wiki/MSYS http://downloads.sourceforge.net/mingw/MSYS-1.0.11.exe

• download and install python 2.7: https://www.python.org/ftp/python/2.7/python-2.7.msi (needed for file generation in libopencm3)

• run MSYS with PATH to python and gcc:

• create and run script run_msys_gcc_arm.cmd in MSYS folder (where msys.bat is located):

rem change path to installed python and gcc-arm 'bin' folder
set PATH=%PATH%;D:\Programm\Python27;D:\Programm\gcc-arm\bin
call %~dp0msys.bat

• build libopencm3:

In opened MSYS shell cd to libopencm3 folder and run make:

cd /c/work/stm32f103_projects/libopencm3/
make

• build projects: cd to any project folder and run make:

cd ../projects/blink
make

Programming on Linux with STLinkV2:

https://github.com/rogerclarkmelbourne/Arduino_STM32/wiki/Programming-an-STM32F103XXX-with-a-generic-%22ST-Link-V2%22-programmer-from-Linux

• Wiring

stlink -> board programming pins

8 Vcc(3.3) -> 3.3
2 SWDIO    -> SWDIO  (PA13, pin 34)
6 SWCLK    -> SWDCLK (PA14, pin 37)
4 Ground   -> GND

• interactive programming: run openocd

openocd -f /usr/share/openocd/scripts/interface/stlink-v2.cfg -f /usr/share/openocd/scripts/target/stm32f1x_stlink.cfg

• run in separate terminal:

telnet localhost 4444
reset halt; flash write_image erase binary.elf; reset run

• automatic programming from script:

openocd -f /usr/share/openocd/scripts/interface/stlink-v2.cfg \
        -f /usr/share/openocd/scripts/target/stm32f1x_stlink.cfg \
        -c init -c "reset halt; flash write_image erase binary.elf; reset run; shutdown"

init command is imporant, all other commands works only after init call