/**
* @brief Initialize RTC block
*
* @note
* @param None
* @retval None
*/
static void Init_RTC(void)
{
/* Initialize the HW - 37Khz LSI being used*/
/* Enable the LSI clock */
__HAL_RCC_LSI_ENABLE();
/* Enable power module clock */
__PWR_CLK_ENABLE();
/* Enable acces to the RTC registers */
HAL_PWR_EnableBkUpAccess();
/**
* Write twice the value to flush the APB-AHB bridge
* This bit shall be written in the register before writing the next one
*/
HAL_PWR_EnableBkUpAccess();
/* Select LSI as RTC Input */
__HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
/* Enable RTC */
__HAL_RCC_RTC_ENABLE();
hrtc.Instance = RTC; /**< Define instance */
hrtc.Lock = HAL_UNLOCKED; /**< Initialize lock */
hrtc.State = HAL_RTC_STATE_READY; /**< Initialize state */
/**
* Bypass the shadow register
*/
HAL_RTCEx_EnableBypassShadow(&hrtc);
/**
* Set the Asynchronous prescaler
*/
hrtc.Init.AsynchPrediv = RTC_ASYNCH_PRESCALER;
hrtc.Init.SynchPrediv = RTC_SYNCH_PRESCALER;
HAL_RTC_Init(&hrtc);
/* Disable Write Protection */
__HAL_RTC_WRITEPROTECTION_DISABLE(&hrtc) ;
HAL_APP_RTC_Set_Wucksel(&hrtc, WUCKSEL_DIVIDER); /**< Tick timer is 55us */
/* Wait for LSI to be stable */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == 0);
return;
}
/**
* @brief IWDG MSP Initialization
* This function configures the hardware resources used in this example:
* - Peripheral's clock enable
* - LSI enable
* @param hwwdg: IWDG handle pointer
* @retval None
*/
void HAL_IWDG_MspInit(IWDG_HandleTypeDef* hiwdg)
{
__PWR_CLK_ENABLE();
HAL_PWR_EnableBkUpAccess();
/*## Enable peripherals and GPIO Clocks ####################################*/
/* RCC LSI clock enable */
__HAL_RCC_LSI_ENABLE();
/* Wait till LSI is ready */
while (__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{}
}
/**
* @brief TIM MSP Initialization
* This function configures the hardware resources used in this example:
* - Peripheral's clock enable
* - Peripheral's GPIO Configuration
* @param htim: TIM handle pointer
* @retval None
*/
void HAL_TIM_IC_MspInit(TIM_HandleTypeDef *htim)
{
/*## Enable peripherals and GPIO Clocks ####################################*/
/* RCC LSI clock enable */
__HAL_RCC_LSI_ENABLE();
/* Wait till LSI is ready */
while (__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{}
/* TIMx Peripheral clock enable */
__HAL_RCC_TIM21_CLK_ENABLE();
/*## Configure the NVIC for TIMx ###########################################*/
HAL_NVIC_SetPriority(TIM21_IRQn,0,0);
/* Enable the TIM21 global Interrupt */
HAL_NVIC_EnableIRQ(TIM21_IRQn);
}
void rtc_init_finalise() {
if (!rtc_need_init_finalise) {
return;
}
rtc_info = 0x20000000 | (rtc_use_lse << 28);
if (PYB_RTC_Init(&RTCHandle) != HAL_OK) {
if (rtc_use_lse) {
// fall back to LSI...
rtc_use_lse = false;
rtc_startup_tick = HAL_GetTick();
PYB_RTC_MspInit_Kick(&RTCHandle, rtc_use_lse);
HAL_PWR_EnableBkUpAccess();
RTCHandle.State = HAL_RTC_STATE_RESET;
if (PYB_RTC_Init(&RTCHandle) != HAL_OK) {
rtc_info = 0x0100ffff; // indicate error
return;
}
} else {
// init error
rtc_info = 0xffff; // indicate error
return;
}
}
// record how long it took for the RTC to start up
rtc_info |= (HAL_GetTick() - rtc_startup_tick) & 0xffff;
// fresh reset; configure RTC Calendar
RTC_CalendarConfig();
#if defined(MCU_SERIES_L4)
if(__HAL_RCC_GET_FLAG(RCC_FLAG_BORRST) != RESET) {
#else
if(__HAL_RCC_GET_FLAG(RCC_FLAG_PORRST) != RESET) {
#endif
// power on reset occurred
rtc_info |= 0x10000;
}
if(__HAL_RCC_GET_FLAG(RCC_FLAG_PINRST) != RESET) {
// external reset occurred
rtc_info |= 0x20000;
}
// Clear source Reset Flag
__HAL_RCC_CLEAR_RESET_FLAGS();
rtc_need_init_finalise = false;
}
STATIC HAL_StatusTypeDef PYB_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct) {
/*------------------------------ LSI Configuration -------------------------*/
if ((RCC_OscInitStruct->OscillatorType & RCC_OSCILLATORTYPE_LSI) == RCC_OSCILLATORTYPE_LSI) {
// Check the LSI State
if (RCC_OscInitStruct->LSIState != RCC_LSI_OFF) {
// Enable the Internal Low Speed oscillator (LSI).
__HAL_RCC_LSI_ENABLE();
} else {
// Disable the Internal Low Speed oscillator (LSI).
__HAL_RCC_LSI_DISABLE();
}
}
/*------------------------------ LSE Configuration -------------------------*/
if ((RCC_OscInitStruct->OscillatorType & RCC_OSCILLATORTYPE_LSE) == RCC_OSCILLATORTYPE_LSE) {
// Enable Power Clock
__PWR_CLK_ENABLE();
HAL_PWR_EnableBkUpAccess();
uint32_t tickstart = HAL_GetTick();
#if defined(MCU_SERIES_F7) || defined(MCU_SERIES_L4)
//__HAL_RCC_PWR_CLK_ENABLE();
// Enable write access to Backup domain
//PWR->CR1 |= PWR_CR1_DBP;
// Wait for Backup domain Write protection disable
while ((PWR->CR1 & PWR_CR1_DBP) == RESET) {
if (HAL_GetTick() - tickstart > RCC_DBP_TIMEOUT_VALUE) {
return HAL_TIMEOUT;
}
}
#else
// Enable write access to Backup domain
//PWR->CR |= PWR_CR_DBP;
// Wait for Backup domain Write protection disable
while ((PWR->CR & PWR_CR_DBP) == RESET) {
if (HAL_GetTick() - tickstart > DBP_TIMEOUT_VALUE) {
return HAL_TIMEOUT;
}
}
#endif
// Set the new LSE configuration
__HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState);
}
return HAL_OK;
}
STATIC HAL_StatusTypeDef PYB_RTC_Init(RTC_HandleTypeDef *hrtc) {
// Check the RTC peripheral state
if (hrtc == NULL) {
return HAL_ERROR;
}
if (hrtc->State == HAL_RTC_STATE_RESET) {
// Allocate lock resource and initialize it
hrtc->Lock = HAL_UNLOCKED;
// Initialize RTC MSP
if (PYB_RTC_MspInit_Finalise(hrtc) != HAL_OK) {
return HAL_ERROR;
}
}
// Set RTC state
hrtc->State = HAL_RTC_STATE_BUSY;
// Disable the write protection for RTC registers
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
// Set Initialization mode
if (RTC_EnterInitMode(hrtc) != HAL_OK) {
// Enable the write protection for RTC registers
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
// Set RTC state
hrtc->State = HAL_RTC_STATE_ERROR;
return HAL_ERROR;
} else {
// Clear RTC_CR FMT, OSEL and POL Bits
hrtc->Instance->CR &= ((uint32_t)~(RTC_CR_FMT | RTC_CR_OSEL | RTC_CR_POL));
// Set RTC_CR register
hrtc->Instance->CR |= (uint32_t)(hrtc->Init.HourFormat | hrtc->Init.OutPut | hrtc->Init.OutPutPolarity);
// Configure the RTC PRER
hrtc->Instance->PRER = (uint32_t)(hrtc->Init.SynchPrediv);
hrtc->Instance->PRER |= (uint32_t)(hrtc->Init.AsynchPrediv << 16);
// Exit Initialization mode
hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
#if defined(MCU_SERIES_L4)
hrtc->Instance->OR &= (uint32_t)~RTC_OR_ALARMOUTTYPE;
hrtc->Instance->OR |= (uint32_t)(hrtc->Init.OutPutType);
#elif defined(MCU_SERIES_F7)
hrtc->Instance->OR &= (uint32_t)~RTC_OR_ALARMTYPE;
hrtc->Instance->OR |= (uint32_t)(hrtc->Init.OutPutType);
#else
hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_ALARMOUTTYPE;
hrtc->Instance->TAFCR |= (uint32_t)(hrtc->Init.OutPutType);
#endif
// Enable the write protection for RTC registers
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
// Set RTC state
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
}
STATIC void PYB_RTC_MspInit_Kick(RTC_HandleTypeDef *hrtc, bool rtc_use_lse) {
/* To change the source clock of the RTC feature (LSE, LSI), You have to:
- Enable the power clock using __PWR_CLK_ENABLE()
- Enable write access using HAL_PWR_EnableBkUpAccess() function before to
configure the RTC clock source (to be done once after reset).
- Reset the Back up Domain using __HAL_RCC_BACKUPRESET_FORCE() and
__HAL_RCC_BACKUPRESET_RELEASE().
- Configure the needed RTc clock source */
// RTC clock source uses LSE (external crystal) only if relevant
// configuration variable is set. Otherwise it uses LSI (internal osc).
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (rtc_use_lse) {
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
} else {
RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
}
PYB_RCC_OscConfig(&RCC_OscInitStruct);
// now ramp up osc. in background and flag calendear init needed
rtc_need_init_finalise = true;
}
/**
* @brief Configures TIM5 to measure the LSI oscillator frequency.
* @param None
* @retval LSI Frequency
*/
static uint32_t GetLSIFrequency(void)
{
uint32_t pclk1 = 0;
TIM_IC_InitTypeDef timinputconfig;
/* Enable the LSI oscillator */
__HAL_RCC_LSI_ENABLE();
/* Wait till LSI is ready */
while (__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{
}
/* Configure the TIM peripheral */
/* Set TIMx instance */
TimInputCaptureHandle.Instance = TIM5;
/* TIM5 configuration: Input Capture mode ---------------------
The LSI oscillator is connected to TIM5 CH4.
The Rising edge is used as active edge.
The TIM5 CCR4 is used to compute the frequency value.
------------------------------------------------------------ */
TimInputCaptureHandle.Init.Prescaler = 0;
TimInputCaptureHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimInputCaptureHandle.Init.Period = 0xFFFF;
TimInputCaptureHandle.Init.ClockDivision = 0;
TimInputCaptureHandle.Init.RepetitionCounter = 0;
if(HAL_TIM_IC_Init(&TimInputCaptureHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Connect internally the TIM5_CH4 Input Capture to the LSI clock output */
HAL_TIMEx_RemapConfig(&TimInputCaptureHandle, TIM_TIM5_LSI);
/* Configure the Input Capture of channel 4 */
timinputconfig.ICPolarity = TIM_ICPOLARITY_RISING;
timinputconfig.ICSelection = TIM_ICSELECTION_DIRECTTI;
timinputconfig.ICPrescaler = TIM_ICPSC_DIV8;
timinputconfig.ICFilter = 0;
if(HAL_TIM_IC_ConfigChannel(&TimInputCaptureHandle, &timinputconfig, TIM_CHANNEL_4) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Reset the flags */
TimInputCaptureHandle.Instance->SR = 0;
/* Start the TIM Input Capture measurement in interrupt mode */
if(HAL_TIM_IC_Start_IT(&TimInputCaptureHandle, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}
/* Wait until the TIM5 get 2 LSI edges (refer to TIM5_IRQHandler() in
stm32f4xx_it.c file) */
while(uwMeasurementDone == 0)
{
}
uwCaptureNumber = 0;
/* Deinitialize the TIM5 peripheral registers to their default reset values */
HAL_TIM_IC_DeInit(&TimInputCaptureHandle);
/* Compute the LSI frequency, depending on TIM5 input clock frequency (PCLK1)*/
/* Get PCLK1 frequency */
pclk1 = HAL_RCC_GetPCLK1Freq();
/* Get PCLK1 prescaler */
if((RCC->CFGR & RCC_CFGR_PPRE1) == 0)
{
/* PCLK1 prescaler equal to 1 => TIMCLK = PCLK1 */
return ((pclk1 / uwPeriodValue) * 8);
}
else
{ /* PCLK1 prescaler different from 1 => TIMCLK = 2 * PCLK1 */
return (((2 * pclk1) / uwPeriodValue) * 8);
}
}
/**
* @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 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.
* @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;
}