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STM32 bootloader, small library, and examples

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STM32 small library and examples

  • Small library for STM32F103, STM32F105(107), STM32F401, STM32F405(407), STM32F429(439).
  • Usage examples.
  • Bootloader.

Status:

Demo f103 f105 f401cc f407 f429
Bootloader ok ok ok
Blinky ok ok ok ok ok
UART ok ok ok ok ok
Timer ok ok ok ok ok
fm25 (SPI) ok ok ok
SoftUSB ok ok ok
VGA (LTDC) n/a n/a n/a n/a ok
FreeRTOS n/a n/a ok ok ok

Bootloader PC app: in progress.

Setting up the environment

Debian-like systems

sudo apt install git gcc-arm-none-eabi openocd

If you see "not found" message please add "extended" repository to /etc/apt/sources.list.

Windows

Prebuilt "arm-gnu-toolchain" Windows package could be found on an official "ARM developer" repository: https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads

-or- you can build it from sources, but it could be a little bit tricky.

If you wish to use "STM32CubeProgrammer" to write your programs to a microcontroller's flash memory - download and install "STM32CubeProgrammer" from official STMicroelectronics site: https://www.st.com/en/development-tools/stm32cubeprog.html

-or-

If you wish to use "openocd" debugger - it is here: https://openocd.org/pages/getting-openocd.html

Compiling

On Linux, cd to a project's directory (where "Makefile" located) and type "make". The script will put you firmware file a.bin to the "bin" directory.

On Windows please use "_compile.bat" script in a project's directory or type the commands manually like shown in the script.

Flashing

After a successful program compilation connect your device to a ST-Link programmer to write it to a microcontroller's memory.

On Linux, cd to a project's directory and use _write.sh script or an "openocd" command from it. To make the script file executable please type

chmod +x _write.sh

On Windows please change the path to a "STM32_Programmer_CLI.exe" file in a "_write.bat" script. Usually this file could be found in the "Program Files" directory on a drive "C:" where "STMCubeProgrammer" software installed.

The script will automatically write your program and start it execution.

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