WWDG_RefreshUntilUserEvent_Init Example Description

Configuration of the WWDG to periodically update the counter and generate an MCU WWDG reset when a user button is pressed. The peripheral initialization uses the LL unitary service functions for optimization purposes (performance and size).

Example Configuration:

Configure the WWDG (Window, Prescaler & Counter) and enable it. Refresh the WWDG downcounter in the main loop - LED1 is blinking fastly & continuously

Example Execution:

When User push-button is pressed, the Downcounter automatic refresh mechanism is disable and thus, reset will occur. After a reset when re-entering in the main, RCC WWDG Reset Flag will be checked and if we are back from a WWDG reset the LED1 will be switch ON.

Waiting a new User push-button pressed to re-activate the WWDG

Keywords

System, WWDG, Timeout, Refresh, Counter update, MCU Reset, Downcounter, Event, Window

Directory contents

- WWDG/WWDG_RefreshUntilUserEvent_Init/Inc/stm32c0xx_it.h          Interrupt handlers header file
- WWDG/WWDG_RefreshUntilUserEvent_Init/Inc/main.h                  Header for main.c module
- WWDG/WWDG_RefreshUntilUserEvent_Init/Inc/stm32_assert.h          Template file to include assert_failed function
- WWDG/WWDG_RefreshUntilUserEvent_Init/Src/stm32c0xx_it.c          Interrupt handlers
- WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c                  Main program
- WWDG/WWDG_RefreshUntilUserEvent_Init/Src/system_stm32c0xx.c      STM32C0xx system source file

Hardware and Software environment

How to use it ?

In order to make the program work, you must do the following :