STM32F4XX Buttons and Leds demo

This is a small university project of mine, which should show the process of developing for STM32F4XX chips under Linux and OS X. There are four sub directories, each having the code that does the very same thing. First button toggles second LED and vice versa.

• hal subdirectory contains example with plain make files and uses STM HAL library
• raw subdirectory contains example with plain make files and does not use STM HAL library
• cmake-hal subdirectory contains example with CMake and uses STM HAL library
• cmake-raw subdirectory contains example with CMake and does not use STM HAL library

Requirements

• arm-none-eabi gcc toolchain. On Fedora package is arm-none-eabi-gcc-cs, on Ubuntu package is gcc-arm-none-eabi
• CMake minimum version 2.8.11
• mikroe-uhb from https://github.com/thotypous/mikroe-uhb
• OpenOCD - optional

Makefile examples build instructions

Simply go to one of the project directories and execute make

CMake examples build instructions

1. Create build dir outside the source tree and enter it.

2. Execute

   cmake -DCMAKE_TOOLCHAIN_FILE=<path-to-arm-toolchain.cmake> <path-to-project-sources>

3. Execute

   make

The toolchain file is located in subdirectory cmake and is named arm-toolchain.cmake

Flasing image to the device

1. Connect device via USB

2. Execute

   mikroe-uhb image.hex

3. Reset or cycle power on the clicker 2 device

Running OpenOCD

To run OpenOCD for clicker 2 device execute:

`openocd -f /usr/share/openocd/scripts/interface/stlink-v2.cfg -f /usr/share/openocd/scripts/target/stm32f4x.cfg`

On OS X paths to openocd configuration files may differ depending on the way how OpenOCD is installed.

On which device is this tested

This code is tested with Mikroelektronika Clicker 2 for STM32 board, but it should work with any other STM32F4XX boards with minor changes like using proper pin for LEDs and buttons and/or port.