warning: unused variable in stm32u0xx_hal_rtc.h

[CanastraRF]

Hi
In File stm32u0xx_hal_rtc.h are the following macros:

#define __HAL_RTC_WRITEPROTECTION_DISABLE(HANDLE)
#define __HAL_RTC_WRITEPROTECTION_ENABLE(HANDLE)
#define __HAL_RTC_DAYLIGHT_SAVING_TIME_ADD1H(HANDLE, BKP)
#define __HAL_RTC_DAYLIGHT_SAVING_TIME_SUB1H(HANDLE, BKP)
#define __HAL_RTC_ALARMA_ENABLE(HANDLE)
#define __HAL_RTC_ALARMA_DISABLE(HANDLE)
#define __HAL_RTC_ALARMB_ENABLE(HANDLE)
#define __HAL_RTC_ALARMB_DISABLE(HANDLE)
#define __HAL_RTC_ALARM_ENABLE_IT(HANDLE, INTERRUPT)
#define __HAL_RTC_ALARM_DISABLE_IT(HANDLE, INTERRUPT)
#define __HAL_RTC_ALARM_GET_IT(HANDLE, INTERRUPT)
#define __HAL_RTC_ALARM_GET_IT_SOURCE(HANDLE, INTERRUPT)
#define __HAL_RTC_ALARM_GET_FLAG(HANDLE, FLAG)
#define __HAL_RTC_ALARM_CLEAR_FLAG(HANDLE, FLAG)

that access the RTC directly and not with HANDLE.
So we get lot of warning: unused variable.

Please use (HANDLE)->Instance->... instead of RTC->... as in all other cubes (F0-F4, G0,G4,L0-F4) sources.

[ALABSTM]

Hi @CanastraRF,

Would you please specify the compiler you are using, its version and the enabled flags?

Thanks,

[CanastraRF]

Hi
We've code like the following:

static RTC_TimeTypeDef * RTC_HandleGet( void );
void RTC_AlarmAEnable(void);

RTC_TimeTypeDef g_hRTC;

static RTC_TimeTypeDef * RTC_HandleGet( void )
{
return &g_hRTC;
}

void RTC_AlarmAEnable(void)
{
RTC_TimeTypeDef * const hRTC = RTC_HandleGet();
__HAL_RTC_ALARMA_ENABLE( hRTC );
}

The warning is with GCC, ARMCLANG, VC++, PCLint, ...
There is no warning with STM32F0, STM32F1, STM32F2, STM32F3, STM32F4, STM32L0, STM32L1, STM32L4, STM32G0, STM32G4 Cube Files

What do you mean with enabled flags?

"-Wunused-variable" is a widely used warning.

[ALABSTM]

Hi @CanastraRF,

You point has been logged into an internal tracker. Let's wait for the feedback of the development teams.

With regards,

[ALABSTM]

ST Internal Reference: 184768