Developing the IWDG driver

In this section, we’ll use what we’ve learned so far in this chapter to develop the IWDG driver.

Let’s start by setting up the project.

Create a copy of your previous project in your IDE, following the steps outlined in earlier chapters. Rename this copied project to IWDG. Next, create a new file named iwdg.c in the Src folder and another file named iwdg.h in the Inc folder.

The IWDG implementation file

Populate your iwdg.c file with the following code:

#include "iwdg.h"
#define IWDG_KEY_ENABLE                 0x0000CCCCU
#define IWDG_KEY_WR_ACCESS_ENABLE       0x00005555U
#define IWDG_PRESCALER_4              0x00000000U
#define IWDG_RELOAD_VAL             &...