smaroukis / STM32-HAL-APIs-Driver-Development-

The content within this repository is my own work produced as a result of completing the course "Embedded Systems STM32 HAL APIs Driver Development", authored by Israel Gbati.

https://www.udemy.com/course/embedded-systems-stm32-hal-apis-driver-development/

For my target device I used the F4 Discovery board, STM32F429I-DISCO. Note this has some differences than the nucleo board used in the course, which I will list below since these are traps for young players.

Each folder should be a standalone program that can be compiled with the STM32CubeIDE (all drivers are within each folder).

Differences between F429I-DISCO and the nucleo board used in the course

Using Timer 6 instead of SysTick

• for incrementing the uwTick value i.e. in HAL_Delay()
• see this in 01-Blinky... main.c

So instead of overriding SysTick, we need to override the HAL_Tim_Period_ElapsedCallback, which is called by the Timer 6 IRQ (see HAL_TIM_IRQHandler).

Instead of this:

// in main.c
void SysTick_Handler(void) {
	HAL_IncTick();
}

We use

// in main.c
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  if (htim->Instance == TIM6) {
    HAL_IncTick();
  }
}