Thanks to STM32 HAL, the function call will remain the same. Note: If you have a different configuration, all you need is to follow this tutorial while using the correct port and pin numbers. Since, these values are fixed, in this tutorial, we will follow the same convention. The LED’s are connected to pins 12,13,14 and 15 on Port D of the GPIO. The STM32F4 - Discovery Kit has 4 user accessible LED and a single Push-Button. Note: The HAL Documentation for STM32F4 is available in this link: LED’s and Button on Discovery Kit These pins however can perform only a pre-defined set of operations depending on how the microcontroller registers for the GPIO is initialized. All pins on a STM32 microcontroller operate as a GPIO. GPIO stands for General Purpose Input-Output. Using the functions in the HAL library, developers can simply call a single function to perform operations like read I/O data, or even perform complex processes like SPI or I2C. The abstraction library is a set of functions and definitions which make it possible for developers to focus on getting their codes running instead of being bogged down with setting all the plethora of registers and bits to get a simple I/O operation possible. Hardware Abstraction Library(HAL) is a part of developer libraries provided by STMicroelectronics for ease of development. If you have another board, you can still follow along as the core concepts and code syntax will remain the same across target devices. It suggested but not necessary to have access to a STM32 discovery kit, preferably the STM32F407-Discovery Board.If you are a beginner to STM32 CubeIDE, I suggest you to refer to another blog I have written on getting started with CubeIDE.This is not a tutorial for C programming, therefore going forward I shall assume a good understanding of C and it basics.

With that in mind, let us start with learning how to develop apps using simple GPIO and Buttons. As a result, being able to develop applications on this platform is an essential skill. STM32 is a diverse family of 32-bit microcontroller used in a wide variety of applications today, ranging from simple toys to even complex control systems like home appliances.

Stm32f4 hal disable interrupt gpio