This project contains only the Low-Layer APIs source code for STM32F4 microcontrollers. For code base the author uses official the Low-Layer APIs code from package STM32CubeF4.

The ST company actively promotes its product - hardware abstraction layer (HAL). Author of this repository considers that the HAL is a bullshit. Only Low-Layer APIs is true product for experts.

In official package the Low-Layer APIs was mixed with bullshit code of HAL. In this repository the author singled out the quintessence of Low-Layer APIs source code.

After singling out the Low-Layer APIs source code the author made some improvements that don't change official code any way:

• IAR project for building static library of Low-Layer APIs
• new module for dynamically setting the interrupt handler (the vector table has been copied to the RAM sector)

System clock from HSE is 8 MHz. Be careful, see macro definitions in options of the project.

Author made repositories for other series:

• STM32L0 series
• STM32F1 series