ST, STM32F4 Discovery

The STM32F4 Discovery is an ST Cortex-M4 board. These notes cover the GNU/ARM toolchain, building and flashing with ST-Link, and debugging with GDB.

Dot matrix + servo + touch sensor

Download the GNU/ARM toolchain

• tar -xvjf gcc-arm-none-eabi-4_8-2014q2-20131204-linux.tar.bz2
• export PATH=$PATH:~/gcc-arm-none-eabi-4_8-2014q2/bin

Download and Build STLINK

• sudo apt-get install autoconf pkg-config libusb-1.0 git
• git clone https://github.com/texane/stlink.git

cd ~/stlink
./autogen.sh
./configure
make

Download STM32 Libraries and Blinky Example

• git clone https://github.com/rowol/stm32_discovery_arm_gcc

Compile Your Source Code

• Edit Makefile
  • STLINK=/home/rowol/stlink #Example, change to your location
  • STM_COMMON=/home/rowol/stm32_discovery_arm_gcc/STM32F4-DISCOVERY_FW_V1.1.0
  • make it

Program ARM's Flash and Run Code

• make burn

or

• st-flash write STM32F4-Discovery.bin 0x08000000

Using external ST-Link

• Remove CN3 jumper

ST-Link     STM32F4
VCC            3V
SWIO           PA13
SWCLK          PA14
VDD            VDD ( depends on product, could range from 1.8v - 5v )
GND            GND

GDB

In the directory with your source code, I've also add a .gdbinit file which contains:

define reload
kill
monitor jtag_reset
load
end

target extended localhost:4242
load

This will execute whenever you start GDB in the source directory

To start up:

~/stlink/st-util                 #Start GDB server
arm-none-eabi-gdb main.elf       #In a second terminal window, start GDB

continue                         #Starts code running, or use other GDB commands to 
                                 # set breakpoints, etc first...

Related projects

• Application - MPR121, capacitive touch sensor controller
• Application - MAX7219, Serially Interfaced, 8-Digit LED Display Drivers (interact with MPR121)
• Application - MAX7219, Serially Interfaced, 8-Digit LED Display Drivers (scrolling text)
• Application - MG90S, Metal Gear Servo
• Application - Joystick
• Application - nRF52, (BLE - UART - STM32F4)
• Application - MeArm, mini robotic arm

Reference

• ARM toolchain
• STM32 Discovery Development On Linux

• STM32F4 Discovery Kit Resource Page
• CMSIS - Cortex Microcontroller Software Interface Standard
• Hardware:stm32f4discovery repair