/**
* @brief Initializes the RCC Oscillators according to the specified parameters in the
* RCC_OscInitTypeDef.
* @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that
* contains the configuration information for the RCC Oscillators.
* @note The PLL is not disabled when used as system clock.
* @note The PLL is not disabled when USB OTG FS clock is enabled (specific to devices with USB FS)
* @retval HAL status
*/
__weak HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct)
{
uint32_t tickstart = 0;
/* Check the parameters */
assert_param(RCC_OscInitStruct != NULL);
assert_param(IS_RCC_OSCILLATORTYPE(RCC_OscInitStruct->OscillatorType));
/*------------------------------- HSE Configuration ------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSE) == RCC_OSCILLATORTYPE_HSE)
{
/* Check the parameters */
assert_param(IS_RCC_HSE(RCC_OscInitStruct->HSEState));
/* When the HSE is used as system clock or clock source for PLL in these cases it is not allowed to be disabled */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSE)
|| ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE)))
{
if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) && (RCC_OscInitStruct->HSEState != RCC_HSE_ON) && (RCC_OscInitStruct->HSEState != RCC_HSE_BYPASS))
{
return HAL_ERROR;
}
}
else
{
/* Reset HSEON and HSEBYP bits before configuring the HSE --------------*/
__HAL_RCC_HSE_CONFIG(RCC_HSE_OFF);
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSE is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Set the new HSE configuration ---------------------------------------*/
__HAL_RCC_HSE_CONFIG(RCC_OscInitStruct->HSEState);
/* Check the HSE State */
if(RCC_OscInitStruct->HSEState != RCC_HSE_OFF)
{
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSE is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*----------------------------- HSI Configuration --------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI) == RCC_OSCILLATORTYPE_HSI)
{
/* Check the parameters */
assert_param(IS_RCC_HSI(RCC_OscInitStruct->HSIState));
assert_param(IS_RCC_CALIBRATION_VALUE(RCC_OscInitStruct->HSICalibrationValue));
/* Check if HSI is used as system clock or as PLL source when PLL is selected as system clock */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSI)
|| ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSI_DIV2)))
{
/* When HSI is used as system clock it will not disabled */
if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET) && (RCC_OscInitStruct->HSIState != RCC_HSI_ON))
{
return HAL_ERROR;
}
/* Otherwise, just the calibration is allowed */
else
{
/* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
__HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
}
}
else
{
/* Check the HSI State */
if((RCC_OscInitStruct->HSIState)!= RCC_HSI_OFF)
{
/* Enable the Internal High Speed oscillator (HSI). */
__HAL_RCC_HSI_ENABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
__HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
}
else
{
/* Disable the Internal High Speed oscillator (HSI). */
__HAL_RCC_HSI_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSI is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*------------------------------ LSI Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSI) == RCC_OSCILLATORTYPE_LSI)
{
/* Check the parameters */
assert_param(IS_RCC_LSI(RCC_OscInitStruct->LSIState));
/* Check the LSI State */
if((RCC_OscInitStruct->LSIState)!= RCC_LSI_OFF)
{
/* Enable the Internal Low Speed oscillator (LSI). */
__HAL_RCC_LSI_ENABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till LSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* To have a fully stabilized clock in the specified range, a software temporization of 1ms
should be added.*/
HAL_Delay(1);
}
else
{
/* Disable the Internal Low Speed oscillator (LSI). */
__HAL_RCC_LSI_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till LSI is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*------------------------------ LSE Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSE) == RCC_OSCILLATORTYPE_LSE)
{
/* Check the parameters */
assert_param(IS_RCC_LSE(RCC_OscInitStruct->LSEState));
/* Enable Power Clock*/
__HAL_RCC_PWR_CLK_ENABLE();
/* Enable write access to Backup domain */
SET_BIT(PWR->CR, PWR_CR_DBP);
/* Wait for Backup domain Write protection disable */
tickstart = HAL_GetTick();
while((PWR->CR & PWR_CR_DBP) == RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_DBP_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Reset LSEON and LSEBYP bits before configuring the LSE ----------------*/
__HAL_RCC_LSE_CONFIG(RCC_LSE_OFF);
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Set the new LSE configuration -----------------------------------------*/
__HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState);
/* Check the LSE State */
if((RCC_OscInitStruct->LSEState) == RCC_LSE_ON)
{
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till LSE is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*-------------------------------- PLL Configuration -----------------------*/
/* Check the parameters */
assert_param(IS_RCC_PLL(RCC_OscInitStruct->PLL.PLLState));
if ((RCC_OscInitStruct->PLL.PLLState) != RCC_PLL_NONE)
{
/* Check if the PLL is used as system clock or not */
if(__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
{
if((RCC_OscInitStruct->PLL.PLLState) == RCC_PLL_ON)
{
/* Check the parameters */
assert_param(IS_RCC_PLLSOURCE(RCC_OscInitStruct->PLL.PLLSource));
assert_param(IS_RCC_PLL_MUL(RCC_OscInitStruct->PLL.PLLMUL));
/* Disable the main PLL. */
__HAL_RCC_PLL_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLL is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Configure the HSE prediv1 factor --------------------------------*/
/* It can be written only when the PLL is disabled. Not used in PLL source is different than HSE */
if(RCC_OscInitStruct->PLL.PLLSource == RCC_PLLSOURCE_HSE)
{
/* Check the parameters */
assert_param(IS_RCC_HSE_PREDIV(RCC_OscInitStruct->HSEPredivValue));
__HAL_RCC_HSE_PREDIV_CONFIG(RCC_OscInitStruct->HSEPredivValue);
}
/* Configure the main PLL clock source and multiplication factors. */
__HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource,
RCC_OscInitStruct->PLL.PLLMUL);
/* Enable the main PLL. */
__HAL_RCC_PLL_ENABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLL is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Disable the main PLL. */
__HAL_RCC_PLL_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLL is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
else
{
return HAL_ERROR;
}
}
return HAL_OK;
}
/**
* @brief Initializes the RCC Oscillators according to the specified parameters in the
* RCC_OscInitTypeDef.
* @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that
* contains the configuration information for the RCC Oscillators.
* @note The PLL is not disabled when used as system clock.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct)
{
uint32_t tickstart = 0;
/* Check the parameters */
assert_param(IS_RCC_OSCILLATORTYPE(RCC_OscInitStruct->OscillatorType));
/*------------------------------- HSE Configuration ------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSE) == RCC_OSCILLATORTYPE_HSE)
{
/* Check the parameters */
assert_param(IS_RCC_HSE(RCC_OscInitStruct->HSEState));
/* When the HSE is used as system clock or clock source for PLL in these cases HSE will not disabled */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_HSE) || ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_PLL) && ((RCC->CFGR & RCC_CFGR_PLLSRC) == RCC_CFGR_PLLSRC_HSE)))
{
if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) && (RCC_OscInitStruct->HSEState != RCC_HSE_ON))
{
return HAL_ERROR;
}
}
else
{
/* Reset HSEON and HSEBYP bits before configuring the HSE --------------*/
__HAL_RCC_HSE_CONFIG(RCC_HSE_OFF);
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till HSE is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Set the new HSE configuration ---------------------------------------*/
__HAL_RCC_HSE_CONFIG(RCC_OscInitStruct->HSEState);
/* Check the HSE State */
if((RCC_OscInitStruct->HSEState) == RCC_HSE_ON)
{
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till HSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till HSE is bypassed or disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*----------------------------- HSI Configuration --------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI) == RCC_OSCILLATORTYPE_HSI)
{
/* Check the parameters */
assert_param(IS_RCC_HSI(RCC_OscInitStruct->HSIState));
assert_param(IS_RCC_CALIBRATION_VALUE(RCC_OscInitStruct->HSICalibrationValue));
/* When the HSI is used as system clock it will not disabled */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_HSI) || ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_PLL) && ((RCC->CFGR & RCC_CFGR_PLLSRC) == RCC_CFGR_PLLSRC_HSI)))
{
/* When HSI is used as system clock it will not disabled */
if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET) && (RCC_OscInitStruct->HSIState != RCC_HSI_ON))
{
return HAL_ERROR;
}
/* Otherwise, just the calibration is allowed */
else
{
/* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
__HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
}
}
else
{
/* Check the HSI State */
if((RCC_OscInitStruct->HSIState)!= RCC_HSI_OFF)
{
/* Enable the Internal High Speed oscillator (HSI or HSIdiv4 */
__HAL_RCC_HSI_CONFIG(RCC_OscInitStruct->HSIState);
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
__HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
}
else
{
/* Disable the Internal High Speed oscillator (HSI). */
__HAL_RCC_HSI_CONFIG(RCC_OscInitStruct->HSIState);
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till HSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*----------------------------- MSI Configuration --------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_MSI) == RCC_OSCILLATORTYPE_MSI)
{
/* Check the parameters */
assert_param(IS_RCC_MSI(RCC_OscInitStruct->MSIState));
assert_param(IS_RCC_MSICALIBRATION_VALUE(RCC_OscInitStruct->MSICalibrationValue));
/* When the MSI is used as system clock it will not disabled */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_MSI) )
{
if((__HAL_RCC_GET_FLAG(RCC_FLAG_MSIRDY) != RESET) && (RCC_OscInitStruct->MSIState != RCC_MSI_ON))
{
return HAL_ERROR;
}
/* Otherwise, just the calibration and MSI range change are allowed */
else
{
/* Selects the Multiple Speed oscillator (MSI) clock range .*/
__HAL_RCC_MSI_RANGE_CONFIG (RCC_OscInitStruct->MSIClockRange);
/* Adjusts the Multiple Speed oscillator (MSI) calibration value.*/
__HAL_RCC_MSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->MSICalibrationValue);
}
}
else
{
/* Check the MSI State */
if((RCC_OscInitStruct->MSIState)!= RCC_MSI_OFF)
{
/* Enable the Internal High Speed oscillator (MSI). */
__HAL_RCC_MSI_ENABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till MSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_MSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > MSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Selects the Multiple Speed oscillator (MSI) clock range .*/
__HAL_RCC_MSI_RANGE_CONFIG (RCC_OscInitStruct->MSIClockRange);
/* Adjusts the Multiple Speed oscillator (MSI) calibration value.*/
__HAL_RCC_MSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->MSICalibrationValue);
}
else
{
/* Disable the Internal High Speed oscillator (MSI). */
__HAL_RCC_MSI_DISABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till MSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_MSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > MSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*------------------------------ LSI Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSI) == RCC_OSCILLATORTYPE_LSI)
{
/* Check the parameters */
assert_param(IS_RCC_LSI(RCC_OscInitStruct->LSIState));
/* Check the LSI State */
if((RCC_OscInitStruct->LSIState)!= RCC_LSI_OFF)
{
/* Enable the Internal Low Speed oscillator (LSI). */
__HAL_RCC_LSI_ENABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Disable the Internal Low Speed oscillator (LSI). */
__HAL_RCC_LSI_DISABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*------------------------------ HSI48 Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI48) == RCC_OSCILLATORTYPE_HSI48)
{
/* Check the parameters */
assert_param(IS_RCC_HSI48(RCC_OscInitStruct->HSI48State));
/* Check the HSI48 State */
if((RCC_OscInitStruct->HSI48State)!= RCC_HSI48_OFF)
{
/* Enable the Internal Low Speed oscillator (HSI48). */
__HAL_RCC_HSI48_ENABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till HSI48 is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSI48_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Disable the Internal Low Speed oscillator (HSI48). */
__HAL_RCC_HSI48_DISABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till HSI48 is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSI48_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*------------------------------ LSE Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSE) == RCC_OSCILLATORTYPE_LSE)
{
/* Check the parameters */
assert_param(IS_RCC_LSE(RCC_OscInitStruct->LSEState));
/* Enable Power Clock*/
__PWR_CLK_ENABLE();
/* Enable write access to Backup domain */
PWR->CR |= PWR_CR_DBP;
/* Wait for Backup domain Write protection disable */
tickstart = HAL_GetTick();
while((PWR->CR & PWR_CR_DBP) == RESET)
{
if((HAL_GetTick() - tickstart ) > DBP_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Reset LSEON and LSEBYP bits before configuring the LSE ----------------*/
__HAL_RCC_LSE_CONFIG(RCC_LSE_OFF);
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Set the new LSE configuration -----------------------------------------*/
__HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState);
/* Check the LSE State */
if((RCC_OscInitStruct->LSEState) == RCC_LSE_ON)
{
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*-------------------------------- PLL Configuration -----------------------*/
/* Check the parameters */
assert_param(IS_RCC_PLL(RCC_OscInitStruct->PLL.PLLState));
if ((RCC_OscInitStruct->PLL.PLLState) != RCC_PLL_NONE)
{
/* Check if the PLL is used as system clock or not */
if(__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_CFGR_SWS_PLL)
{
if((RCC_OscInitStruct->PLL.PLLState) == RCC_PLL_ON)
{
/* Check the parameters */
assert_param(IS_RCC_PLLSOURCE(RCC_OscInitStruct->PLL.PLLSource));
assert_param(IS_RCC_PLL_MUL(RCC_OscInitStruct->PLL.PLLMUL));
assert_param(IS_RCC_PLL_DIV(RCC_OscInitStruct->PLL.PLLDIV));
/* Disable the main PLL. */
__HAL_RCC_PLL_DISABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till PLL is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Configure the main PLL clock source, multiplication and division factors. */
__HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource,
RCC_OscInitStruct->PLL.PLLMUL,
RCC_OscInitStruct->PLL.PLLDIV);
/* Enable the main PLL. */
__HAL_RCC_PLL_ENABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till PLL is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Disable the main PLL. */
__HAL_RCC_PLL_DISABLE();
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till PLL is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
else
{
return HAL_ERROR;
}
}
return HAL_OK;
}
/**
* @brief Initializes the RCC Oscillators according to the specified parameters in the
* RCC_OscInitTypeDef.
* @param RCC_OscInitStruct pointer to an RCC_OscInitTypeDef structure that
* contains the configuration information for the RCC Oscillators.
* @note The PLL is not disabled when used as system clock.
* @note Transitions LSE Bypass to LSE On and LSE On to LSE Bypass are not
* supported by this macro. User should request a transition to LSE Off
* first and then LSE On or LSE Bypass.
* @note Transition HSE Bypass to HSE On and HSE On to HSE Bypass are not
* supported by this macro. User should request a transition to HSE Off
* first and then HSE On or HSE Bypass.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct)
{
uint32_t tickstart = 0;
/* Check the parameters */
assert_param(RCC_OscInitStruct != NULL);
assert_param(IS_RCC_OSCILLATORTYPE(RCC_OscInitStruct->OscillatorType));
/*------------------------------- HSE Configuration ------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSE) == RCC_OSCILLATORTYPE_HSE)
{
/* Check the parameters */
assert_param(IS_RCC_HSE(RCC_OscInitStruct->HSEState));
/* When the HSE is used as system clock or clock source for PLL in these cases it is not allowed to be disabled */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSE)
|| ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE)))
{
if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) && (RCC_OscInitStruct->HSEState == RCC_HSE_OFF))
{
return HAL_ERROR;
}
}
else
{
/* Set the new HSE configuration ---------------------------------------*/
__HAL_RCC_HSE_CONFIG(RCC_OscInitStruct->HSEState);
/* Check the HSE State */
if(RCC_OscInitStruct->HSEState != RCC_HSE_OFF)
{
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till HSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till HSE is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*----------------------------- HSI Configuration --------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI) == RCC_OSCILLATORTYPE_HSI)
{
/* Check the parameters */
assert_param(IS_RCC_HSI(RCC_OscInitStruct->HSIState));
assert_param(IS_RCC_CALIBRATION_VALUE(RCC_OscInitStruct->HSICalibrationValue));
/* Check if HSI is used as system clock or as PLL source when PLL is selected as system clock */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSI)
|| ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSI)))
{
/* When HSI is used as system clock it will not disabled */
if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET) && (RCC_OscInitStruct->HSIState != RCC_HSI_ON))
{
return HAL_ERROR;
}
/* Otherwise, just the calibration is allowed */
else
{
/* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
__HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
}
}
else
{
/* Check the HSI State */
if(RCC_OscInitStruct->HSIState != RCC_HSI_OFF)
{
/* Enable the Internal High Speed oscillator (HSI). */
__HAL_RCC_HSI_ENABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till HSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
__HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
}
else
{
/* Disable the Internal High Speed oscillator (HSI). */
__HAL_RCC_HSI_DISABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till HSI is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*----------------------------- MSI Configuration --------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_MSI) == RCC_OSCILLATORTYPE_MSI)
{
/* Check the parameters */
assert_param(IS_RCC_MSI(RCC_OscInitStruct->MSIState));
assert_param(IS_RCC_MSICALIBRATION_VALUE(RCC_OscInitStruct->MSICalibrationValue));
assert_param(IS_RCC_MSI_CLOCK_RANGE(RCC_OscInitStruct->MSIClockRange));
/* When the MSI is used as system clock it will not be disabled */
if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_MSI) )
{
if((__HAL_RCC_GET_FLAG(RCC_FLAG_MSIRDY) != RESET) && (RCC_OscInitStruct->MSIState == RCC_MSI_OFF))
{
return HAL_ERROR;
}
/* Otherwise, just the calibration and MSI range change are allowed */
else
{
/* To correctly read data from FLASH memory, the number of wait states (LATENCY)
must be correctly programmed according to the frequency of the CPU clock
(HCLK) and the supply voltage of the device. */
if(RCC_OscInitStruct->MSIClockRange > __HAL_RCC_GET_MSI_RANGE())
{
/* First increase number of wait states update if necessary */
if(RCC_SetFlashLatencyFromMSIRange(RCC_OscInitStruct->MSIClockRange) != HAL_OK)
{
return HAL_ERROR;
}
/* Selects the Multiple Speed oscillator (MSI) clock range .*/
__HAL_RCC_MSI_RANGE_CONFIG(RCC_OscInitStruct->MSIClockRange);
/* Adjusts the Multiple Speed oscillator (MSI) calibration value.*/
__HAL_RCC_MSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->MSICalibrationValue);
}
else
{
/* Else, keep current flash latency while decreasing applies */
/* Selects the Multiple Speed oscillator (MSI) clock range .*/
__HAL_RCC_MSI_RANGE_CONFIG(RCC_OscInitStruct->MSIClockRange);
/* Adjusts the Multiple Speed oscillator (MSI) calibration value.*/
__HAL_RCC_MSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->MSICalibrationValue);
/* Decrease number of wait states update if necessary */
if(RCC_SetFlashLatencyFromMSIRange(RCC_OscInitStruct->MSIClockRange) != HAL_OK)
{
return HAL_ERROR;
}
}
/* Configure the source of time base considering new system clocks settings*/
HAL_InitTick (TICK_INT_PRIORITY);
}
}
else
{
/* Check the MSI State */
if(RCC_OscInitStruct->MSIState != RCC_MSI_OFF)
{
/* Enable the Multi Speed oscillator (MSI). */
__HAL_RCC_MSI_ENABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till MSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_MSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart) > MSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Selects the Multiple Speed oscillator (MSI) clock range .*/
__HAL_RCC_MSI_RANGE_CONFIG(RCC_OscInitStruct->MSIClockRange);
/* Adjusts the Multiple Speed oscillator (MSI) calibration value.*/
__HAL_RCC_MSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->MSICalibrationValue);
}
else
{
/* Disable the Multi Speed oscillator (MSI). */
__HAL_RCC_MSI_DISABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till MSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_MSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart) > MSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
}
/*------------------------------ LSI Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSI) == RCC_OSCILLATORTYPE_LSI)
{
/* Check the parameters */
assert_param(IS_RCC_LSI(RCC_OscInitStruct->LSIState));
/* Check the LSI State */
if(RCC_OscInitStruct->LSIState != RCC_LSI_OFF)
{
/* Enable the Internal Low Speed oscillator (LSI). */
__HAL_RCC_LSI_ENABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till LSI is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Disable the Internal Low Speed oscillator (LSI). */
__HAL_RCC_LSI_DISABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till LSI is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*------------------------------ LSE Configuration -------------------------*/
if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSE) == RCC_OSCILLATORTYPE_LSE)
{
/* Check the parameters */
assert_param(IS_RCC_LSE(RCC_OscInitStruct->LSEState));
/* Enable Power Clock*/
__HAL_RCC_PWR_CLK_ENABLE();
/* Enable write access to Backup domain */
SET_BIT(PWR->CR, PWR_CR_DBP);
/* Wait for Backup domain Write protection disable */
tickstart = HAL_GetTick();
while((PWR->CR & PWR_CR_DBP) == RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_DBP_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Set the new LSE configuration -----------------------------------------*/
__HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState);
/* Check the LSE State */
if(RCC_OscInitStruct->LSEState != RCC_LSE_OFF)
{
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till LSE is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
/*-------------------------------- PLL Configuration -----------------------*/
/* Check the parameters */
assert_param(IS_RCC_PLL(RCC_OscInitStruct->PLL.PLLState));
if ((RCC_OscInitStruct->PLL.PLLState) != RCC_PLL_NONE)
{
/* Check if the PLL is used as system clock or not */
if(__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
{
if((RCC_OscInitStruct->PLL.PLLState) == RCC_PLL_ON)
{
/* Check the parameters */
assert_param(IS_RCC_PLLSOURCE(RCC_OscInitStruct->PLL.PLLSource));
assert_param(IS_RCC_PLL_MUL(RCC_OscInitStruct->PLL.PLLMUL));
assert_param(IS_RCC_PLL_DIV(RCC_OscInitStruct->PLL.PLLDIV));
/* Disable the main PLL. */
__HAL_RCC_PLL_DISABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till PLL is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Configure the main PLL clock source, multiplication and division factors. */
__HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource,
RCC_OscInitStruct->PLL.PLLMUL,
RCC_OscInitStruct->PLL.PLLDIV);
/* Enable the main PLL. */
__HAL_RCC_PLL_ENABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till PLL is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Disable the main PLL. */
__HAL_RCC_PLL_DISABLE();
/* Get Start Tick */
tickstart = HAL_GetTick();
/* Wait till PLL is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
else
{
return HAL_ERROR;
}
}
return HAL_OK;
}
