HAL IWDG constants migration ¶

This section provides information about the HAL IWDG constants migration.

HAL IWDG prescaler constants ¶

In HAL2, these constants have been removed and is keep it in LL file.

HAL1	HAL2
#define IWDG_PRESCALER_4 #define IWDG_PRESCALER_8 #define IWDG_PRESCALER_16 #define IWDG_PRESCALER_32 #define IWDG_PRESCALER_64 #define IWDG_PRESCALER_128 #define IWDG_PRESCALER_256 #define IWDG_PRESCALER_512 #define IWDG_PRESCALER_1024	These defines have been removed. In `HAL2`, users no longer provide values for the IWDG counter, prescaler, and window registers directly. Instead, users specify the maximum and minimum time intervals in milliseconds, microseconds, or seconds, and the HAL IWDG driver internally calculates the corresponding prescaler,counter, and window register values. For direct register-level control of the IWDG, users should utilize the LL driver rather than the HAL.

HAL1

HAL2

                #define IWDG_PRESCALER_4
#define IWDG_PRESCALER_8
#define IWDG_PRESCALER_16
#define IWDG_PRESCALER_32
#define IWDG_PRESCALER_64
#define IWDG_PRESCALER_128
#define IWDG_PRESCALER_256
#define IWDG_PRESCALER_512
#define IWDG_PRESCALER_1024

               

These defines have been removed. In HAL2, users no longer provide values for the IWDG counter, prescaler, and window registers directly. Instead, users specify the maximum and minimum time intervals in milliseconds, microseconds, or seconds, and the HAL IWDG driver internally calculates the corresponding prescaler,counter, and window register values.

For direct register-level control of the IWDG, users should utilize the LL driver rather than the HAL.

HAL IWDG status constants ¶

HAL1	HAL2
#define IWDG_STATUS_DISABLE #define IWDG_STATUS_ENABLE	Removed; In `HAL2`, use the `HAL_IWDG_GetState()` API to retrieve the current IWDG state, either `IDLE` or `ACTIVE`. For register-level control of the IWDG, the LL driver (e.g., `LL_IWDG_IsActiveFlag_ONF`) should be used instead of the HAL.

HAL1

HAL2

                #define IWDG_STATUS_DISABLE
#define IWDG_STATUS_ENABLE

Removed; In HAL2, use the HAL_IWDG_GetState() API to retrieve the current IWDG state, either IDLE or ACTIVE.

For register-level control of the IWDG, the LL driver (e.g., LL_IWDG_IsActiveFlag_ONF) should be used instead of the HAL.

HAL IWDG window status constants ¶

HAL1	HAL2
#define IWDG_WINDOW_DISABLE	Relocated to the .c file as it is not intended for user access.

HAL IWDG early wakeup interrupt status constants ¶

HAL1	HAL2
#define IWDG_EWI_DISABLE	Removed; When early wakeup is not required, the user should set the `early_wakeup_time` parameter to zero within the `HAL_IWDG_Start()` function.