Beginning STM32: Developing with FreeRTOS, libopencm3 and GCC

© Warren Gay 2018

Warren GayBeginning STM32https://doi.org/10.1007/978-1-4842-3624-6_4

4. GPIO

Warren Gay¹ 

(1)

St. Catharines, Ontario, Canada

 

In this chapter, you’re going to use the libopencm3 library to build a blink program from source code. This example program demonstrates the configuration and use of GPIO (General Purpose Input/Output). The program presented is a slightly modified version of a libopencm3 example program named miniblink. It has been modified to provide a different timing so that it will be obvious that your newly flashed code is the one executing. After building and running this program, we’ll discuss the GPIO API (Application Programming Interface) that is provided by libopencm3.

Building miniblink

Change to the subdirectory ...