## 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.

LED4 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 LED4 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

Hardware and Software environment

How to use it ?

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