## IWDG_RefreshUntilUserEvent_Init Example Description

How to configure the IWDG peripheral to ensure periodical counter update and generate an MCU IWDG reset when a User push-button is pressed. The peripheral is initialized with LL unitary service functions to optimize for performance and size.

Example Configuration:

Configure the IWDG (prescaler, counter) and enable it.

Infinite refresh of the IWDG down-counter done in the main loop. LED1 is blinking fast & continuously.

Example Execution:

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

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

Keywords

System, IWDG, reload counter, MCU Reset

Directory contents

- IWDG/IWDG_RefreshUntilUserEvent_Init/Inc/stm32c0xx_it.h          Interrupt handlers header file
- IWDG/IWDG_RefreshUntilUserEvent_Init/Inc/main.h                        Header for main.c module
- IWDG/IWDG_RefreshUntilUserEvent_Init/Inc/stm32_assert.h                Template file to include assert_failed function
- IWDG/IWDG_RefreshUntilUserEvent_Init/Src/stm32c0xx_it.c          Interrupt handlers
- IWDG/IWDG_RefreshUntilUserEvent_Init/Src/main.c                        Main program
- IWDG/IWDG_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 :