en 129
fix LPC812 PWM
Fork of
mbed-dev
by 
mbed official
Diff: targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c
- Revision:
- 124:6a4a5b7d7324
- Parent:
- 0:9b334a45a8ff
--- a/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c Thu May 05 21:00:11 2016 +0100
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c Mon May 09 18:30:12 2016 +0100
@@ -2,10 +2,9 @@
******************************************************************************
* @file stm32f1xx_hal_rcc_ex.c
* @author MCD Application Team
- * @version V1.0.0
- * @date 15-December-2014
+ * @version V1.0.4
+ * @date 29-April-2016
* @brief Extended RCC HAL module driver.
- *
* This file provides firmware functions to manage the following
* functionalities RCC extension peripheral:
* + Extended Peripheral Control functions
@@ -13,7 +12,7 @@
******************************************************************************
* @attention
*
- * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
@@ -50,7 +49,7 @@
#ifdef HAL_RCC_MODULE_ENABLED
/** @defgroup RCCEx RCCEx
- * @brief RCC Extension HAL module driver
+ * @brief RCC Extension HAL module driver.
* @{
*/
@@ -59,16 +58,10 @@
/** @defgroup RCCEx_Private_Constants RCCEx Private Constants
* @{
*/
-#define PLL2_TIMEOUT_VALUE ((uint32_t)100) /* 100 ms */
-
-/* Alias word address of PLL2ON bit */
-#define PLL2ON_BITNUMBER POSITION_VAL(RCC_CR_PLL2ON)
-#define CR_PLL2ON_BB ((uint32_t)(PERIPH_BB_BASE + (RCC_CR_OFFSET_BB * 32) + (PLL2ON_BITNUMBER * 4)))
-
-
/**
* @}
*/
+
/* Private macro -------------------------------------------------------------*/
/** @defgroup RCCEx_Private_Macros RCCEx Private Macros
* @{
@@ -77,1123 +70,10 @@
* @}
*/
-/** @defgroup RCCEx_Private_Macros RCCEx Private Macros
- * @{
- */
-
-/**
- * @}
- */
-
-
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
-/**
- * @}
- */
-
-/** @addtogroup RCC
- * @{
- */
-
-/** @addtogroup RCC_Exported_Functions
- * @{
- */
-
-#if defined(STM32F105xC) || defined(STM32F107xC) || defined (STM32F100xB) || defined (STM32F100xE)
-/** @addtogroup RCC_Exported_Functions_Group1
- * @{
- */
-
-/**
- * @brief Resets the RCC clock configuration to the default reset state.
- * @note The default reset state of the clock configuration is given below:
- * - HSI ON and used as system clock source
- * - HSE and PLL OFF
- * - AHB, APB1 and APB2 prescaler set to 1.
- * - CSS and MCO1 OFF
- * - All interrupts disabled
- * @note This function doesn't modify the configuration of the
- * - Peripheral clocks
- * - LSI, LSE and RTC clocks
- * @retval None
- */
-void HAL_RCC_DeInit(void)
-{
- /* Switch SYSCLK to HSI */
- CLEAR_BIT(RCC->CFGR, RCC_CFGR_SW);
-
- /* Reset HSEON, CSSON, & PLLON bits */
- CLEAR_BIT(RCC->CR, RCC_CR_HSEON | RCC_CR_CSSON | RCC_CR_PLLON);
-
- /* Reset HSEBYP bit */
- CLEAR_BIT(RCC->CR, RCC_CR_HSEBYP);
-
- /* Reset CFGR register */
- CLEAR_REG(RCC->CFGR);
-
- /* Set HSITRIM bits to the reset value */
- MODIFY_REG(RCC->CR, RCC_CR_HSITRIM, ((uint32_t)0x10 << POSITION_VAL(RCC_CR_HSITRIM)));
-
- /* Reset CFGR2 register */
- CLEAR_REG(RCC->CFGR2);
-
- /* Disable all interrupts */
- CLEAR_REG(RCC->CIR);
-}
-/**
- * @}
- */
-
-#endif /* STM32F105xC || STM32F107xC || STM32F100xB || STM32F100xE */
-
-#if defined(STM32F105xC) || defined(STM32F107xC)
-/** @addtogroup RCC_Exported_Functions_Group1
- * @{
- */
-
-/**
- * @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
- */
-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 disabled */
- 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;
- }
- }
- }
- }
-
- /*-------------------------------- PLL2 Configuration -----------------------*/
- /* Check the parameters */
- assert_param(IS_RCC_PLL2(RCC_OscInitStruct->PLL2.PLL2State));
- if ((RCC_OscInitStruct->PLL2.PLL2State) != RCC_PLL2_NONE)
- {
- /* This bit can not be cleared if the PLL2 clock is used indirectly as system
- clock (i.e. it is used as PLL clock entry that is used as system clock). */
- if((__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE) && \
- (__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && \
- ((READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC)) == RCC_CFGR2_PREDIV1SRC_PLL2))
- {
- return HAL_ERROR;
- }
- else
- {
- if((RCC_OscInitStruct->PLL2.PLL2State) == RCC_PLL2_ON)
- {
- /* Check the parameters */
- assert_param(IS_RCC_PLL2_MUL(RCC_OscInitStruct->PLL2.PLL2MUL));
- assert_param(IS_RCC_HSE_PREDIV2(RCC_OscInitStruct->PLL2.HSEPrediv2Value));
-
- /* Prediv2 can be written only when the PLLI2S is disabled. */
- /* Return an error only if new value is different from the programmed value */
- if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL3ON) && \
- (__HAL_RCC_HSE_GET_PREDIV2() != RCC_OscInitStruct->PLL2.HSEPrediv2Value))
- {
- return HAL_ERROR;
- }
-
- /* Disable the main PLL2. */
- __HAL_RCC_PLL2_DISABLE();
-
- /* Get Start Tick*/
- tickstart = HAL_GetTick();
-
- /* Wait till PLL2 is disabled */
- while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) != RESET)
- {
- if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
-
- /* Configure the HSE prediv2 factor --------------------------------*/
- __HAL_RCC_HSE_PREDIV2_CONFIG(RCC_OscInitStruct->PLL2.HSEPrediv2Value);
-
- /* Configure the main PLL2 multiplication factors. */
- __HAL_RCC_PLL2_CONFIG(RCC_OscInitStruct->PLL2.PLL2MUL);
-
- /* Enable the main PLL2. */
- __HAL_RCC_PLL2_ENABLE();
-
- /* Get Start Tick*/
- tickstart = HAL_GetTick();
-
- /* Wait till PLL2 is ready */
- while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) == RESET)
- {
- if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- else
- {
- /* Set PREDIV1 source to HSE */
- CLEAR_BIT(RCC->CFGR2, RCC_CFGR2_PREDIV1SRC);
-
- /* Disable the main PLL2. */
- __HAL_RCC_PLL2_DISABLE();
-
- /* Get Start Tick*/
- tickstart = HAL_GetTick();
-
- /* Wait till PLL2 is disabled */
- while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) != RESET)
- {
- if((HAL_GetTick() - tickstart ) > PLL2_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 disabled */
- while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
- {
- if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
-
- /* Configure the HSE prediv1 factor and source --------------------------------*/
- /* 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 parameter */
- assert_param(IS_RCC_PREDIV1_SOURCE(RCC_OscInitStruct->Prediv1Source));
- assert_param(IS_RCC_HSE_PREDIV(RCC_OscInitStruct->HSEPredivValue));
-
- /* Set PREDIV1 source */
- SET_BIT(RCC->CFGR2, RCC_OscInitStruct->Prediv1Source);
-
- /* Set PREDIV1 Value */
- __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;
-}
-/**
- * @}
- */
-
-#endif /* STM32F105xC STM32F107xC */
-
-#if defined(STM32F101x6) || defined(STM32F101xB) || defined(STM32F101xE) || defined(STM32F101xG) || \
- defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || \
- defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
-/** @addtogroup RCC_Exported_Functions_Group1
- * @{
- */
-
-/**
- * @brief Initializes the CPU, AHB and APB busses clocks according to the specified
- * parameters in the RCC_ClkInitStruct.
- * @param RCC_ClkInitStruct: pointer to an RCC_OscInitTypeDef structure that
- * contains the configuration information for the RCC peripheral.
- * @param FLatency: FLASH Latency
- * This parameter can be one of the following values:
- * @arg FLASH_LATENCY_0: FLASH 0 Latency cycle
- *
- * @note The SystemCoreClock CMSIS variable is used to store System Clock Frequency
- * and updated by HAL_RCC_GetHCLKFreq() function called within this function
- *
- * @note The HSI is used (enabled by hardware) as system clock source after
- * startup from Reset, wake-up from STOP and STANDBY mode, or in case
- * of failure of the HSE used directly or indirectly as system clock
- * (if the Clock Security System CSS is enabled).
- *
- * @note A switch from one clock source to another occurs only if the target
- * clock source is ready (clock stable after startup delay or PLL locked).
- * If a clock source which is not yet ready is selected, the switch will
- * occur when the clock source will be ready.
- * You can use HAL_RCC_GetClockConfig() function to know which clock is
- * currently used as system clock source.
- * @retval None
- */
-HAL_StatusTypeDef HAL_RCC_ClockConfig(RCC_ClkInitTypeDef *RCC_ClkInitStruct, uint32_t FLatency)
-{
- uint32_t tickstart = 0;
-
- /* Check the parameters */
- assert_param(RCC_ClkInitStruct != NULL);
- assert_param(IS_RCC_CLOCKTYPE(RCC_ClkInitStruct->ClockType));
- assert_param(IS_FLASH_LATENCY(FLatency));
-
- /* 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) of the device. */
-
- /* Increasing the CPU frequency */
- if(FLatency > (FLASH->ACR & FLASH_ACR_LATENCY))
- {
- /* Program the new number of wait states to the LATENCY bits in the FLASH_ACR register */
- __HAL_FLASH_SET_LATENCY(FLatency);
-
- /* Check that the new number of wait states is taken into account to access the Flash
- memory by reading the FLASH_ACR register */
- if((FLASH->ACR & FLASH_ACR_LATENCY) != FLatency)
- {
- return HAL_ERROR;
- }
- /*-------------------------- HCLK Configuration --------------------------*/
- if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_HCLK) == RCC_CLOCKTYPE_HCLK)
- {
- assert_param(IS_RCC_HCLK(RCC_ClkInitStruct->AHBCLKDivider));
- MODIFY_REG(RCC->CFGR, RCC_CFGR_HPRE, RCC_ClkInitStruct->AHBCLKDivider);
- }
-
- /*------------------------- SYSCLK Configuration ---------------------------*/
- if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_SYSCLK) == RCC_CLOCKTYPE_SYSCLK)
- {
- assert_param(IS_RCC_SYSCLKSOURCE(RCC_ClkInitStruct->SYSCLKSource));
-
- /* HSE is selected as System Clock Source */
- if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
- {
- /* Check the HSE ready flag */
- if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
- {
- return HAL_ERROR;
- }
- }
- /* PLL is selected as System Clock Source */
- else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
- {
- /* Check the PLL ready flag */
- if(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
- {
- return HAL_ERROR;
- }
- }
- /* HSI is selected as System Clock Source */
- else
- {
- /* Check the HSI ready flag */
- if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
- {
- return HAL_ERROR;
- }
- }
-
- MODIFY_REG(RCC->CFGR, RCC_CFGR_SW, RCC_ClkInitStruct->SYSCLKSource);
-
- /* Get Start Tick*/
- tickstart = HAL_GetTick();
-
- if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
- {
- while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSE)
- {
- if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
- {
- while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
- {
- if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- else
- {
- while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSI)
- {
- if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- }
- }
- /* Decreasing the CPU frequency */
- else
- {
- /*-------------------------- HCLK Configuration --------------------------*/
- if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_HCLK) == RCC_CLOCKTYPE_HCLK)
- {
- assert_param(IS_RCC_HCLK(RCC_ClkInitStruct->AHBCLKDivider));
- MODIFY_REG(RCC->CFGR, RCC_CFGR_HPRE, RCC_ClkInitStruct->AHBCLKDivider);
- }
-
- /*------------------------- SYSCLK Configuration -------------------------*/
- if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_SYSCLK) == RCC_CLOCKTYPE_SYSCLK)
- {
- assert_param(IS_RCC_SYSCLKSOURCE(RCC_ClkInitStruct->SYSCLKSource));
-
- /* HSE is selected as System Clock Source */
- if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
- {
- /* Check the HSE ready flag */
- if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
- {
- return HAL_ERROR;
- }
- }
- /* PLL is selected as System Clock Source */
- else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
- {
- /* Check the PLL ready flag */
- if(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
- {
- return HAL_ERROR;
- }
- }
- /* HSI is selected as System Clock Source */
- else
- {
- /* Check the HSI ready flag */
- if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
- {
- return HAL_ERROR;
- }
- }
-
- MODIFY_REG(RCC->CFGR, RCC_CFGR_SW, RCC_ClkInitStruct->SYSCLKSource);
-
- /* Get Start Tick*/
- tickstart = HAL_GetTick();
-
- if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
- {
- while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSE)
- {
- if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
- {
- while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
- {
- if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- else
- {
- while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSI)
- {
- if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
- {
- return HAL_TIMEOUT;
- }
- }
- }
- }
-
- /* Program the new number of wait states to the LATENCY bits in the FLASH_ACR register */
- __HAL_FLASH_SET_LATENCY(FLatency);
-
- /* Check that the new number of wait states is taken into account to access the Flash
- memory by reading the FLASH_ACR register */
- if((FLASH->ACR & FLASH_ACR_LATENCY) != FLatency)
- {
- return HAL_ERROR;
- }
- }
-
- /*-------------------------- PCLK1 Configuration ---------------------------*/
- if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_PCLK1) == RCC_CLOCKTYPE_PCLK1)
- {
- assert_param(IS_RCC_PCLK(RCC_ClkInitStruct->APB1CLKDivider));
- MODIFY_REG(RCC->CFGR, RCC_CFGR_PPRE1, RCC_ClkInitStruct->APB1CLKDivider);
- }
-
- /*-------------------------- PCLK2 Configuration ---------------------------*/
- if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_PCLK2) == RCC_CLOCKTYPE_PCLK2)
- {
- assert_param(IS_RCC_PCLK(RCC_ClkInitStruct->APB2CLKDivider));
- MODIFY_REG(RCC->CFGR, RCC_CFGR_PPRE2, ((RCC_ClkInitStruct->APB2CLKDivider) << 3));
- }
-
- /* Configure the source of time base considering new system clocks settings*/
- HAL_InitTick (TICK_INT_PRIORITY);
-
- return HAL_OK;
-}
-/**
- * @}
- */
-
-#endif /* STM32F101x6 || STM32F101xB || STM32F101xE || (...) || STM32F105xC || STM32F107xC */
-
-#if defined(STM32F105xC) || defined(STM32F107xC)
-/** @addtogroup RCC_Exported_Functions_Group2
- * @{
- */
-
-/**
- * @brief Returns the SYSCLK frequency
- *
- * @note The system frequency computed by this function is not the real
- * frequency in the chip. It is calculated based on the predefined
- * constant and the selected clock source:
- * @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(*)
- * @note If SYSCLK source is HSE, function returns values based on HSE_VALUE
- * divided by PREDIV factor(**)
- * @note If SYSCLK source is PLL, function returns values based on HSE_VALUE
- * divided by PREDIV factor(**) or HSI_VALUE(*) multiplied by the PLL factor.
- * @note (*) HSI_VALUE is a constant defined in stm32f1xx_hal_conf.h file (default value
- * 8 MHz).
- * @note (**) HSE_VALUE is a constant defined in stm32f1xx_hal_conf.h file (default value
- * 8 MHz), user has to ensure that HSE_VALUE is same as the real
- * frequency of the crystal used. Otherwise, this function may
- * have wrong result.
- *
- * @note The result of this function could be not correct when using fractional
- * value for HSE crystal.
- *
- * @note This function can be used by the user application to compute the
- * baudrate for the communication peripherals or configure other parameters.
- *
- * @note Each time SYSCLK changes, this function must be called to update the
- * right SYSCLK value. Otherwise, any configuration based on this function will be incorrect.
- *
- *
- * @retval SYSCLK frequency
- */
-uint32_t HAL_RCC_GetSysClockFreq(void)
-{
- const uint8_t aPLLMULFactorTable[12] = {0, 0, 4, 5, 6, 7, 8, 9, 0, 0, 0, 13};
- const uint8_t aPredivFactorTable[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16};
-
- uint32_t tmp_reg = 0, prediv1 = 0, pllclk = 0, pllmul = 0;
- uint32_t sysclockfreq = 0;
- uint32_t prediv2 = 0, pll2mul = 0;
-
- tmp_reg = RCC->CFGR;
-
- /* Get SYSCLK source -------------------------------------------------------*/
- switch (tmp_reg & RCC_CFGR_SWS)
- {
- case RCC_CFGR_SWS_HSE: /* HSE used as system clock */
- {
- sysclockfreq = HSE_VALUE;
- break;
- }
- case RCC_CFGR_SWS_PLL: /* PLL used as system clock */
- {
- pllmul = aPLLMULFactorTable[(uint32_t)(tmp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
-
- if ((tmp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
- {
- prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)];
- if(HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_PREDIV1SRC))
- {
- /* PLL2 selected as Prediv1 source */
- /* PLLCLK = PLL2CLK / PREDIV1 * PLLMUL with PLL2CLK = HSE/PREDIV2 * PLL2MUL */
- prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1;
- pll2mul = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> POSITION_VAL(RCC_CFGR2_PLL2MUL)) + 2;
- pllclk = (uint32_t)((((HSE_VALUE / prediv2) * pll2mul) / prediv1) * pllmul);
- }
- else
- {
- /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */
- pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul);
- }
-
- /* If PLLMUL was set to 13 means that it was to cover the case PLLMUL 6.5 (avoid using float) */
- /* In this case need to divide pllclk by 2 */
- if (pllmul == aPLLMULFactorTable[(uint32_t)(RCC_CFGR_PLLMULL6_5) >> POSITION_VAL(RCC_CFGR_PLLMULL)])
- {
- pllclk = pllclk / 2;
- }
- }
- else
- {
- /* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */
- pllclk = (uint32_t)((HSI_VALUE >> 1) * pllmul);
- }
- sysclockfreq = pllclk;
- break;
- }
- case RCC_CFGR_SWS_HSI: /* HSI used as system clock source */
- default: /* HSI used as system clock */
- {
- sysclockfreq = HSI_VALUE;
- break;
- }
- }
- return sysclockfreq;
-}
-
-
-/**
- * @brief Configures the RCC_OscInitStruct according to the internal
- * RCC configuration registers.
- * @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that
- * will be configured.
- * @retval None
- */
-void HAL_RCC_GetOscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct)
-{
- /* Check the parameters */
- assert_param(RCC_OscInitStruct != NULL);
-
- /* Set all possible values for the Oscillator type parameter ---------------*/
- RCC_OscInitStruct->OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI \
- | RCC_OSCILLATORTYPE_LSE | RCC_OSCILLATORTYPE_LSI;
-
- /* Get the Prediv1 source --------------------------------------------------*/
- RCC_OscInitStruct->Prediv1Source = READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC);
-
- /* Get the HSE configuration -----------------------------------------------*/
- if((RCC->CR &RCC_CR_HSEBYP) == RCC_CR_HSEBYP)
- {
- RCC_OscInitStruct->HSEState = RCC_HSE_BYPASS;
- }
- else if((RCC->CR &RCC_CR_HSEON) == RCC_CR_HSEON)
- {
- RCC_OscInitStruct->HSEState = RCC_HSE_ON;
- }
- else
- {
- RCC_OscInitStruct->HSEState = RCC_HSE_OFF;
- }
-
- RCC_OscInitStruct->HSEPredivValue = __HAL_RCC_HSE_GET_PREDIV();
-
- /* Get the HSI configuration -----------------------------------------------*/
- if((RCC->CR &RCC_CR_HSION) == RCC_CR_HSION)
- {
- RCC_OscInitStruct->HSIState = RCC_HSI_ON;
- }
- else
- {
- RCC_OscInitStruct->HSIState = RCC_HSI_OFF;
- }
-
- RCC_OscInitStruct->HSICalibrationValue = (uint32_t)((RCC->CR & RCC_CR_HSITRIM) >> POSITION_VAL(RCC_CR_HSITRIM));
-
- /* Get the LSE configuration -----------------------------------------------*/
- if((RCC->BDCR &RCC_BDCR_LSEBYP) == RCC_BDCR_LSEBYP)
- {
- RCC_OscInitStruct->LSEState = RCC_LSE_BYPASS;
- }
- else if((RCC->BDCR &RCC_BDCR_LSEON) == RCC_BDCR_LSEON)
- {
- RCC_OscInitStruct->LSEState = RCC_LSE_ON;
- }
- else
- {
- RCC_OscInitStruct->LSEState = RCC_LSE_OFF;
- }
-
- /* Get the LSI configuration -----------------------------------------------*/
- if((RCC->CSR &RCC_CSR_LSION) == RCC_CSR_LSION)
- {
- RCC_OscInitStruct->LSIState = RCC_LSI_ON;
- }
- else
- {
- RCC_OscInitStruct->LSIState = RCC_LSI_OFF;
- }
-
- /* Get the PLL configuration -----------------------------------------------*/
- if((RCC->CR &RCC_CR_PLLON) == RCC_CR_PLLON)
- {
- RCC_OscInitStruct->PLL.PLLState = RCC_PLL_ON;
- }
- else
- {
- RCC_OscInitStruct->PLL.PLLState = RCC_PLL_OFF;
- }
- RCC_OscInitStruct->PLL.PLLSource = (uint32_t)(RCC->CFGR & RCC_CFGR_PLLSRC);
- RCC_OscInitStruct->PLL.PLLMUL = (uint32_t)(RCC->CFGR & RCC_CFGR_PLLMULL);
-
- /* Get the PLL2 configuration -----------------------------------------------*/
- if((RCC->CR &RCC_CR_PLL2ON) == RCC_CR_PLL2ON)
- {
- RCC_OscInitStruct->PLL2.PLL2State = RCC_PLL2_ON;
- }
- else
- {
- RCC_OscInitStruct->PLL2.PLL2State = RCC_PLL2_OFF;
- }
- RCC_OscInitStruct->PLL2.HSEPrediv2Value = __HAL_RCC_HSE_GET_PREDIV2();
- RCC_OscInitStruct->PLL2.PLL2MUL = (uint32_t)(RCC->CFGR2 & RCC_CFGR2_PLL2MUL);
-}
-
-/**
- * @}
- */
-
-#endif /* STM32F105xC || STM32F107xC*/
-
-#if defined (STM32F100xB) || defined (STM32F100xE)
-/** @addtogroup RCC_Exported_Functions_Group2
- * @{
- */
-
-/**
- * @brief Returns the SYSCLK frequency
- *
- * @note The system frequency computed by this function is not the real
- * frequency in the chip. It is calculated based on the predefined
- * constant and the selected clock source:
- * @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(*)
- * @note If SYSCLK source is HSE, function returns values based on HSE_VALUE
- * divided by PREDIV factor(**)
- * @note If SYSCLK source is PLL, function returns values based on HSE_VALUE
- * divided by PREDIV factor(**) or HSI_VALUE(*) multiplied by the PLL factor.
- * @note (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
- * 8 MHz).
- * @note (**) HSE_VALUE is a constant defined in stm32f1xx_hal_conf.h file (default value
- * 8 MHz), user has to ensure that HSE_VALUE is same as the real
- * frequency of the crystal used. Otherwise, this function may
- * have wrong result.
- *
- * @note The result of this function could be not correct when using fractional
- * value for HSE crystal.
- *
- * @note This function can be used by the user application to compute the
- * baudrate for the communication peripherals or configure other parameters.
- *
- * @note Each time SYSCLK changes, this function must be called to update the
- * right SYSCLK value. Otherwise, any configuration based on this function will be incorrect.
- *
- *
- * @retval SYSCLK frequency
- */
-uint32_t HAL_RCC_GetSysClockFreq(void)
-{
- const uint8_t aPLLMULFactorTable[16] = { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16};
- const uint8_t aPredivFactorTable[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16};
- uint32_t tmp_reg = 0, prediv1 = 0, pllclk = 0, pllmul = 0;
- uint32_t sysclockfreq = 0;
-
- tmp_reg = RCC->CFGR;
-
- /* Get SYSCLK source -------------------------------------------------------*/
- switch (tmp_reg & RCC_CFGR_SWS)
- {
- case RCC_CFGR_SWS_HSE: /* HSE used as system clock */
- {
- sysclockfreq = HSE_VALUE;
- break;
- }
- case RCC_CFGR_SWS_PLL: /* PLL used as system clock */
- {
- pllmul = aPLLMULFactorTable[(uint32_t)(tmp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
- if ((tmp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
- {
- prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)];
- /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */
- pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul);
- }
- else
- {
- /* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */
- pllclk = (uint32_t)((HSI_VALUE >> 1) * pllmul);
- }
- sysclockfreq = pllclk;
- break;
- }
- case RCC_CFGR_SWS_HSI: /* HSI used as system clock source */
- default: /* HSI used as system clock */
- {
- sysclockfreq = HSI_VALUE;
- break;
- }
- }
- return sysclockfreq;
-}
-/**
- * @}
- */
-
-#endif /* STM32F100xB || STM32F100xE*/
-
-#if defined(STM32F101x6) || defined(STM32F101xB) || defined(STM32F101xE) || defined(STM32F101xG) || \
- defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || \
- defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
-/** @addtogroup RCC_Exported_Functions_Group2
- * @{
- */
-
-/**
- * @brief Configures the RCC_ClkInitStruct according to the internal
- * RCC configuration registers.
- * @param RCC_ClkInitStruct: pointer to an RCC_ClkInitTypeDef structure that
- * will be configured.
- * @param pFLatency: Pointer on the Flash Latency.
- * @retval None
- */
-void HAL_RCC_GetClockConfig(RCC_ClkInitTypeDef *RCC_ClkInitStruct, uint32_t *pFLatency)
-{
- /* Check the parameters */
- assert_param(RCC_ClkInitStruct != NULL);
- assert_param(pFLatency != NULL);
-
- /* Set all possible values for the Clock type parameter --------------------*/
- RCC_ClkInitStruct->ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
-
- /* Get the SYSCLK configuration --------------------------------------------*/
- RCC_ClkInitStruct->SYSCLKSource = (uint32_t)(RCC->CFGR & RCC_CFGR_SW);
-
- /* Get the HCLK configuration ----------------------------------------------*/
- RCC_ClkInitStruct->AHBCLKDivider = (uint32_t)(RCC->CFGR & RCC_CFGR_HPRE);
-
- /* Get the APB1 configuration ----------------------------------------------*/
- RCC_ClkInitStruct->APB1CLKDivider = (uint32_t)(RCC->CFGR & RCC_CFGR_PPRE1);
-
- /* Get the APB2 configuration ----------------------------------------------*/
- RCC_ClkInitStruct->APB2CLKDivider = (uint32_t)((RCC->CFGR & RCC_CFGR_PPRE2) >> 3);
-
- /* Get the Flash Wait State (Latency) configuration ------------------------*/
- *pFLatency = (uint32_t)(FLASH->ACR & FLASH_ACR_LATENCY);
-}
-/**
- * @}
- */
-
-#endif /* STM32F101x6 || STM32F101xB || STM32F101xE || (...) || STM32F105xC || STM32F107xC */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/** @addtogroup RCCEx
- * @{
- */
-
/** @defgroup RCCEx_Exported_Functions RCCEx Exported Functions
* @{
*/
@@ -1212,7 +92,7 @@
(@) Important note: Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to
select the RTC clock source; in this case the Backup domain will be reset in
order to modify the RTC Clock source, as consequence RTC registers (including
- the backup registers) and RCC_BDCR register are set to their reset values.
+ the backup registers) are set to their reset values.
@endverbatim
* @{
@@ -1221,7 +101,7 @@
/**
* @brief Initializes the RCC extended peripherals clocks according to the specified parameters in the
* RCC_PeriphCLKInitTypeDef.
- * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that
+ * @param PeriphClkInit pointer to an RCC_PeriphCLKInitTypeDef structure that
* contains the configuration information for the Extended Peripherals clocks(RTC clock).
*
* @note Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to select
@@ -1237,7 +117,7 @@
*/
HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit)
{
- uint32_t tickstart = 0, tmp_reg = 0;
+ uint32_t tickstart = 0, temp_reg = 0;
#if defined(STM32F105xC) || defined(STM32F107xC)
uint32_t pllactive = 0;
#endif /* STM32F105xC || STM32F107xC */
@@ -1247,54 +127,56 @@
/*------------------------------- RTC/LCD Configuration ------------------------*/
if ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == RCC_PERIPHCLK_RTC))
- {
- /* Enable Power Controller clock */
+ {
+ /* check for RTC Parameters used to output RTCCLK */
+ assert_param(IS_RCC_RTCCLKSOURCE(PeriphClkInit->RTCClockSelection));
+
+ /* 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)
+ if((HAL_GetTick() - tickstart) > RCC_DBP_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
-
- tmp_reg = (RCC->BDCR & RCC_BDCR_RTCSEL);
- /* Reset the Backup domain only if the RTC Clock source selection is modified */
- if((tmp_reg != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)))
+
+ /* Reset the Backup domain only if the RTC Clock source selection is modified from reset value */
+ temp_reg = (RCC->BDCR & RCC_BDCR_RTCSEL);
+ if((temp_reg != 0x00000000U) && (temp_reg != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)))
{
/* Store the content of BDCR register before the reset of Backup Domain */
- tmp_reg = (RCC->BDCR & ~(RCC_BDCR_RTCSEL));
+ temp_reg = (RCC->BDCR & ~(RCC_BDCR_RTCSEL));
/* RTC Clock selection can be changed only if the Backup Domain is reset */
__HAL_RCC_BACKUPRESET_FORCE();
__HAL_RCC_BACKUPRESET_RELEASE();
/* Restore the Content of BDCR register */
- RCC->BDCR = tmp_reg;
- }
+ RCC->BDCR = temp_reg;
- /* If LSE is selected as RTC clock source, wait for LSE reactivation */
- if ((PeriphClkInit->RTCClockSelection == RCC_RTCCLKSOURCE_LSE))
- {
- /* Get timeout */
- tickstart = HAL_GetTick();
+ /* Wait for LSERDY if LSE was enabled */
+ if (HAL_IS_BIT_SET(temp_reg, RCC_BDCR_LSEON))
+ {
+ /* Get timeout */
+ 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)
+ /* Wait till LSE is ready */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
{
- return HAL_TIMEOUT;
- }
- }
+ if((HAL_GetTick() - tickstart) > RCC_LSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
}
-
- __HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection);
+ __HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection);
}
/*------------------------------ ADC clock Configuration ------------------*/
@@ -1386,8 +268,9 @@
}
#endif /* STM32F105xC || STM32F107xC */
-#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || \
- defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
+ || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
+ || defined(STM32F105xC) || defined(STM32F107xC)
/*------------------------------ USB clock Configuration ------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USB) == RCC_PERIPHCLK_USB)
{
@@ -1405,7 +288,7 @@
/**
* @brief Get the PeriphClkInit according to the internal
* RCC configuration registers.
- * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that
+ * @param PeriphClkInit pointer to an RCC_PeriphCLKInitTypeDef structure that
* returns the configuration information for the Extended Peripherals clocks(RTC, I2S, ADC clocks).
* @retval None
*/
@@ -1447,8 +330,9 @@
#endif /* STM32F103xE || STM32F103xG */
-#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || \
- defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
+ || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
+ || defined(STM32F105xC) || defined(STM32F107xC)
/* Get the USB clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USB;
PeriphClkInit->UsbClockSelection = __HAL_RCC_GET_USB_SOURCE();
@@ -1458,19 +342,54 @@
/**
* @brief Returns the peripheral clock frequency
* @note Returns 0 if peripheral clock is unknown
- * @param PeriphClk: Peripheral clock identifier
+ * @param PeriphClk Peripheral clock identifier
* This parameter can be one of the following values:
- * @arg RCC_PERIPHCLK_RTC: RTC peripheral clock
- * @arg RCC_PERIPHCLK_ADC: ADC peripheral clock
- * @arg RCC_PERIPHCLK_I2S2: I2S2 peripheral clock (STM32F103xE, STM32F103xG, STM32F105xC & STM32F107xC)
- * @arg RCC_PERIPHCLK_I2S3: I2S3 peripheral clock (STM32F103xE, STM32F103xG, STM32F105xC & STM32F107xC)
- * @arg RCC_PERIPHCLK_USB: USB peripheral clock (STM32F102xx, STM32F103xx, STM32F105xC & STM32F107xC)
+ * @arg @ref RCC_PERIPHCLK_RTC RTC peripheral clock
+ * @arg @ref RCC_PERIPHCLK_ADC ADC peripheral clock
+ @if STM32F103xE
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ @endif
+ @if STM32F103xG
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ @endif
+ @if STM32F105xC
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
+ @endif
+ @if STM32F107xC
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
+ * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
+ @endif
+ @if STM32F102xx
+ * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
+ @endif
+ @if STM32F103xx
+ * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
+ @endif
* @retval Frequency in Hz (0: means that no available frequency for the peripheral)
*/
uint32_t HAL_RCCEx_GetPeriphCLKFreq(uint32_t PeriphClk)
{
-#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || \
- defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
+ || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
+ || defined(STM32F105xC) || defined(STM32F107xC)
#if defined(STM32F105xC) || defined(STM32F107xC)
const uint8_t aPLLMULFactorTable[12] = {0, 0, 4, 5, 6, 7, 8, 9, 0, 0, 0, 13};
const uint8_t aPredivFactorTable[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16};
@@ -1479,9 +398,10 @@
const uint8_t aPredivFactorTable[2] = { 1, 2};
#endif
#endif
- uint32_t tmp_reg = 0, frequency = 0;
-#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || \
- defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+ uint32_t temp_reg = 0, frequency = 0;
+#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
+ || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
+ || defined(STM32F105xC) || defined(STM32F107xC)
uint32_t prediv1 = 0, pllclk = 0, pllmul = 0;
#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
#if defined(STM32F105xC) || defined(STM32F107xC)
@@ -1493,20 +413,22 @@
switch (PeriphClk)
{
-#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || \
- defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
+ || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
+ || defined(STM32F105xC) || defined(STM32F107xC)
case RCC_PERIPHCLK_USB:
{
/* Get RCC configuration ------------------------------------------------------*/
- tmp_reg = RCC->CFGR;
+ temp_reg = RCC->CFGR;
/* Check if PLL is enabled */
if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLLON))
{
- pllmul = aPLLMULFactorTable[(uint32_t)(tmp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
- if ((tmp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
+ pllmul = aPLLMULFactorTable[(uint32_t)(temp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
+ if ((temp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
{
-#if defined(STM32F105xC) || defined(STM32F107xC) || defined (STM32F100xB) || defined (STM32F100xE)
+#if defined(STM32F105xC) || defined(STM32F107xC) || defined(STM32F100xB)\
+ || defined(STM32F100xE)
prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)];
#else
prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR & RCC_CFGR_PLLXTPRE) >> POSITION_VAL(RCC_CFGR_PLLXTPRE)];
@@ -1534,7 +456,7 @@
pllclk = pllclk / 2;
}
#else
- if ((tmp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
+ if ((temp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
{
/* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */
pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul);
@@ -1550,7 +472,7 @@
/* Calcul of the USB frequency*/
#if defined(STM32F105xC) || defined(STM32F107xC)
/* USBCLK = PLLVCO = (2 x PLLCLK) / USB prescaler */
- if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBPLLCLK_DIV2)
+ if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBCLKSOURCE_PLL_DIV2)
{
/* Prescaler of 2 selected for USB */
frequency = pllclk;
@@ -1562,7 +484,7 @@
}
#else
/* USBCLK = PLLCLK / USB prescaler */
- if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBPLLCLK_DIV1)
+ if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBCLKSOURCE_PLL)
{
/* No prescaler selected for USB */
frequency = pllclk;
@@ -1577,10 +499,11 @@
break;
}
#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
-#if defined (STM32F103xE) || defined (STM32F103xG) || defined (STM32F105xC) || defined (STM32F107xC)
+#if defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC)\
+ || defined(STM32F107xC)
case RCC_PERIPHCLK_I2S2:
{
-#if defined (STM32F103xE) || defined (STM32F103xG)
+#if defined(STM32F103xE) || defined(STM32F103xG)
/* SYSCLK used as source clock for I2S2 */
frequency = HAL_RCC_GetSysClockFreq();
#else
@@ -1605,7 +528,7 @@
}
case RCC_PERIPHCLK_I2S3:
{
-#if defined (STM32F103xE) || defined (STM32F103xG)
+#if defined(STM32F103xE) || defined(STM32F103xG)
/* SYSCLK used as source clock for I2S3 */
frequency = HAL_RCC_GetSysClockFreq();
#else
@@ -1632,19 +555,19 @@
case RCC_PERIPHCLK_RTC:
{
/* Get RCC BDCR configuration ------------------------------------------------------*/
- tmp_reg = RCC->BDCR;
+ temp_reg = RCC->BDCR;
/* Check if LSE is ready if RTC clock selection is LSE */
- if (((tmp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSE) && (HAL_IS_BIT_SET(tmp_reg, RCC_BDCR_LSERDY)))
+ if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSE) && (HAL_IS_BIT_SET(temp_reg, RCC_BDCR_LSERDY)))
{
frequency = LSE_VALUE;
}
/* Check if LSI is ready if RTC clock selection is LSI */
- else if (((tmp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSI) && (HAL_IS_BIT_SET(RCC->CSR, RCC_CSR_LSIRDY)))
+ else if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSI) && (HAL_IS_BIT_SET(RCC->CSR, RCC_CSR_LSIRDY)))
{
frequency = LSI_VALUE;
}
- else if (((tmp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_HSE_DIV128) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSERDY)))
+ else if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_HSE_DIV128) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSERDY)))
{
frequency = HSE_VALUE / 128;
}
@@ -1689,7 +612,7 @@
/**
* @brief Enable PLLI2S
- * @param PLLI2SInit: pointer to an RCC_PLLI2SInitTypeDef structure that
+ * @param PLLI2SInit pointer to an RCC_PLLI2SInitTypeDef structure that
* contains the configuration information for the PLLI2S
* @note The PLLI2S configuration not modified if used by I2S2 or I2S3 Interface.
* @retval HAL status
@@ -1815,7 +738,7 @@
/**
* @brief Enable PLL2
- * @param PLL2Init: pointer to an RCC_PLL2InitTypeDef structure that
+ * @param PLL2Init pointer to an RCC_PLL2InitTypeDef structure that
* contains the configuration information for the PLL2
* @note The PLL2 configuration not modified if used indirectly as system clock.
* @retval HAL status
@@ -1938,6 +861,7 @@
*/
#endif /* HAL_RCC_MODULE_ENABLED */
+
/**
* @}
*/