LL_CRC_DeInit API migration ¶

The LL de-initialization function previously available in the stm32tnxx_ll_crc.c file within HAL1 are no longer present in HAL2. In HAL2, all LL C file ( stm32tnxx_ll_crc.c) have been removed, leaving only the LL header files ( stm32tnxx_ll_crc.h) that contain static inline functions.

If users need to de-initialize CRC using the LL layer, they have only one method:

Replace manually the de-initialization function : Replace the LL_CRC_DeInit function manually with equivalent sequences using the static inline functions provided in the stm32tnxx_ll_crc.h file, tailored to their specific configuration and requirements.

This approach ensures that the de-initialization sequence is precisely addressing the given use case based on the LL static inline functions provided in the stm32tnxx_ll_crc.h header file.

Related concept:

Remove stm32tnxx_ll_ppp.c files

Method 1: Utilize STM32CubeMX2 Code Generation ¶

Create a new project with the STM32CubeMX2, then select the CRC and start the initialization and configuration.

Generated CRC de-initialization sequence ¶

The CRC de-initialization sequence is generated in the mx_crc_deinit function in mx_crc.c file under $YOUR_PROJECT_NAME$/$YOUR_PROJECT_NAME$_SW/generated/STM32Cube_CodeGen.

Comparison of HAL1 and HAL2 ¶
HAL1	HAL2
static void MX_CRC_DeInit(void) { LL_CRC_DeInit(); }	void mx_crc_ll_deinit(void) { LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_CRC); LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_CRC); }

Method 2: Replace manually the de-initialization functions ¶

LL_CRC_DeInit() API migration ¶

According to the used CRC, Implement the precise calls to LL_AHB1_GRP1_ForceReset() and LL_AHB1_GRP1_ReleaseReset

Comparison of HAL1 and HAL2 ¶
HAL1	HAL2
LL_CRC_DeInit();	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_CRC); LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_CRC);