STM32F439xx HAL User Manual
Defines
LSI Configuration
RCC Exported Macros

Defines

#define __HAL_RCC_LSI_ENABLE()   (*(__IO uint32_t *) RCC_CSR_LSION_BB = ENABLE)
 Macros to enable or disable the Internal Low Speed oscillator (LSI).
#define __HAL_RCC_LSI_DISABLE()   (*(__IO uint32_t *) RCC_CSR_LSION_BB = DISABLE)

Define Documentation

#define __HAL_RCC_LSI_DISABLE ( )    (*(__IO uint32_t *) RCC_CSR_LSION_BB = DISABLE)

Definition at line 881 of file stm32f4xx_hal_rcc.h.

Referenced by HAL_RCC_OscConfig().

#define __HAL_RCC_LSI_ENABLE ( )    (*(__IO uint32_t *) RCC_CSR_LSION_BB = ENABLE)

Macros to enable or disable the Internal Low Speed oscillator (LSI).

Note:
After enabling the LSI, the application software should wait on LSIRDY flag to be set indicating that LSI clock is stable and can be used to clock the IWDG and/or the RTC.
LSI can not be disabled if the IWDG is running.
When the LSI is stopped, LSIRDY flag goes low after 6 LSI oscillator clock cycles.

Definition at line 880 of file stm32f4xx_hal_rcc.h.

Referenced by HAL_RCC_OscConfig().