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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.c | 1197 |
1 files changed, 0 insertions, 1197 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.c b/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.c deleted file mode 100644 index e131f4ef11..0000000000 --- a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.c +++ /dev/null @@ -1,1197 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_rcc.c - * @author MCD Application Team - * @version V1.0.1 - * @date 25-June-2015 - * @brief RCC HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Reset and Clock Control (RCC) peripheral: - * + Initialization and de-initialization functions - * + Peripheral Control functions - * - @verbatim - ============================================================================== - ##### RCC specific features ##### - ============================================================================== - [..] - After reset the device is running from Internal High Speed oscillator - (HSI 16MHz) with Flash 0 wait state, Flash prefetch buffer, D-Cache - and I-Cache are disabled, and all peripherals are off except internal - SRAM, Flash and JTAG. - (+) There is no prescaler on High speed (AHB) and Low speed (APB) busses; - all peripherals mapped on these busses are running at HSI speed. - (+) The clock for all peripherals is switched off, except the SRAM and FLASH. - (+) All GPIOs are in input floating state, except the JTAG pins which - are assigned to be used for debug purpose. - - [..] - Once the device started from reset, the user application has to: - (+) Configure the clock source to be used to drive the System clock - (if the application needs higher frequency/performance) - (+) Configure the System clock frequency and Flash settings - (+) Configure the AHB and APB busses prescalers - (+) Enable the clock for the peripheral(s) to be used - (+) Configure the clock source(s) for peripherals which clocks are not - derived from the System clock (I2S, RTC, ADC, USB OTG FS/SDIO/RNG) - - ##### RCC Limitations ##### - ============================================================================== - [..] - A delay between an RCC peripheral clock enable and the effective peripheral - enabling should be taken into account in order to manage the peripheral read/write - from/to registers. - (+) This delay depends on the peripheral mapping. - (+) If peripheral is mapped on AHB: the delay is 2 AHB clock cycle - after the clock enable bit is set on the hardware register - (+) If peripheral is mapped on APB: the delay is 2 APB clock cycle - after the clock enable bit is set on the hardware register - - [..] - Implemented Workaround: - (+) For AHB & APB peripherals, a dummy read to the peripheral register has been - inserted in each __HAL_RCC_PPP_CLK_ENABLE() macro. - - @endverbatim - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. Neither the name of STMicroelectronics nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_HAL_Driver - * @{ - */ - -/** @defgroup RCC RCC - * @brief RCC HAL module driver - * @{ - */ - -#ifdef HAL_RCC_MODULE_ENABLED - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/* Private macro -------------------------------------------------------------*/ -/** @defgroup RCC_Private_Macros RCC Private Macros - * @{ - */ - -#define MCO1_CLK_ENABLE() __HAL_RCC_GPIOA_CLK_ENABLE() -#define MCO1_GPIO_PORT GPIOA -#define MCO1_PIN GPIO_PIN_8 - -#define MCO2_CLK_ENABLE() __HAL_RCC_GPIOC_CLK_ENABLE() -#define MCO2_GPIO_PORT GPIOC -#define MCO2_PIN GPIO_PIN_9 - -/** - * @} - */ -/* Private variables ---------------------------------------------------------*/ -/** @defgroup RCC_Private_Variables RCC Private Variables - * @{ - */ -const uint8_t APBAHBPrescTable[16] = {0, 0, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 6, 7, 8, 9}; - -/** - * @} - */ - -/* Private function prototypes -----------------------------------------------*/ -/* Exported functions ---------------------------------------------------------*/ - -/** @defgroup RCC_Exported_Functions RCC Exported Functions - * @{ - */ - -/** @defgroup RCC_Exported_Functions_Group1 Initialization and de-initialization functions - * @brief Initialization and Configuration functions - * - @verbatim - =============================================================================== -##### Initialization and de-initialization functions ##### - =============================================================================== - [..] - This section provides functions allowing to configure the internal/external oscillators - (HSE, HSI, LSE, LSI, PLL, CSS and MCO) and the System buses clocks (SYSCLK, AHB, APB1 - and APB2). - - [..] Internal/external clock and PLL configuration - (#) HSI (high-speed internal), 16 MHz factory-trimmed RC used directly or through - the PLL as System clock source. - - (#) LSI (low-speed internal), 32 KHz low consumption RC used as IWDG and/or RTC - clock source. - - (#) HSE (high-speed external), 4 to 26 MHz crystal oscillator used directly or - through the PLL as System clock source. Can be used also as RTC clock source. - - (#) LSE (low-speed external), 32 KHz oscillator used as RTC clock source. - - (#) PLL (clocked by HSI or HSE), featuring two different output clocks: - (++) The first output is used to generate the high speed system clock (up to 216 MHz) - (++) The second output is used to generate the clock for the USB OTG FS (48 MHz), - the random analog generator (<=48 MHz) and the SDIO (<= 48 MHz). - - (#) CSS (Clock security system), once enable using the function HAL_RCC_EnableCSS() - and if a HSE clock failure occurs(HSE used directly or through PLL as System - clock source), the System clock is automatically switched to HSI and an interrupt - is generated if enabled. The interrupt is linked to the Cortex-M7 NMI - (Non-Maskable Interrupt) exception vector. - - (#) MCO1 (microcontroller clock output), used to output HSI, LSE, HSE or PLL - clock (through a configurable prescaler) on PA8 pin. - - (#) MCO2 (microcontroller clock output), used to output HSE, PLL, SYSCLK or PLLI2S - clock (through a configurable prescaler) on PC9 pin. - - [..] System, AHB and APB busses clocks configuration - (#) Several clock sources can be used to drive the System clock (SYSCLK): HSI, - HSE and PLL. - The AHB clock (HCLK) is derived from System clock through configurable - prescaler and used to clock the CPU, memory and peripherals mapped - on AHB bus (DMA, GPIO...). APB1 (PCLK1) and APB2 (PCLK2) clocks are derived - from AHB clock through configurable prescalers and used to clock - the peripherals mapped on these busses. You can use - "HAL_RCC_GetSysClockFreq()" function to retrieve the frequencies of these clocks. - - -@- All the peripheral clocks are derived from the System clock (SYSCLK) except: - (+@) I2S: the I2S clock can be derived either from a specific PLL (PLLI2S) or - from an external clock mapped on the I2S_CKIN pin. - You have to use __HAL_RCC_PLLI2S_CONFIG() macro to configure this clock. - (+@) SAI: the SAI clock can be derived either from a specific PLL (PLLI2S) or (PLLSAI) or - from an external clock mapped on the I2S_CKIN pin. - You have to use __HAL_RCC_PLLI2S_CONFIG() macro to configure this clock. - (+@) RTC: the RTC clock can be derived either from the LSI, LSE or HSE clock - divided by 2 to 31. You have to use __HAL_RCC_RTC_CONFIG() and __HAL_RCC_RTC_ENABLE() - macros to configure this clock. - (+@) USB OTG FS, SDIO and RTC: USB OTG FS require a frequency equal to 48 MHz - to work correctly, while the SDIO require a frequency equal or lower than - to 48. This clock is derived of the main PLL through PLLQ divider. - (+@) IWDG clock which is always the LSI clock. -@endverbatim - * @{ - */ - -/** - * @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, PLL and PLLI2S OFF - * - AHB, APB1 and APB2 prescaler set to 1. - * - CSS, MCO1 and MCO2 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) -{ - /* Set HSION bit */ - SET_BIT(RCC->CR, RCC_CR_HSION | RCC_CR_HSITRIM_4); - - /* Reset CFGR register */ - CLEAR_REG(RCC->CFGR); - - /* Reset HSEON, CSSON, PLLON, PLLI2S */ - CLEAR_BIT(RCC->CR, RCC_CR_HSEON | RCC_CR_CSSON | RCC_CR_PLLON| RCC_CR_PLLI2SON); - - /* Reset PLLCFGR register */ - CLEAR_REG(RCC->PLLCFGR); - SET_BIT(RCC->PLLCFGR, RCC_PLLCFGR_PLLM_4 | RCC_PLLCFGR_PLLN_6 | RCC_PLLCFGR_PLLN_7 | RCC_PLLCFGR_PLLQ_2); - - /* Reset PLLI2SCFGR register */ - CLEAR_REG(RCC->PLLI2SCFGR); - SET_BIT(RCC->PLLI2SCFGR, RCC_PLLI2SCFGR_PLLI2SN_6 | RCC_PLLI2SCFGR_PLLI2SN_7 | RCC_PLLI2SCFGR_PLLI2SR_1); - - /* Reset HSEBYP bit */ - CLEAR_BIT(RCC->CR, RCC_CR_HSEBYP); - - /* Disable all interrupts */ - CLEAR_REG(RCC->CIR); -} - -/** - * @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, It can not be disabled */ - if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSE) - || ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && ((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_PLLSRC_HSE))) - { - if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) && (RCC_OscInitStruct->HSEState == RCC_HSE_OFF)) - { - 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 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)); - - /* 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) && ((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_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). */ - __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 ready */ - 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; - } - } - } - else - { - /* Disable the Internal Low Speed oscillator (LSI). */ - __HAL_RCC_LSI_DISABLE(); - - /* 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; - } - } - } - } - /*------------------------------ 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 */ - PWR->CR1 |= PWR_CR1_DBP; - - /* Wait for Backup domain Write protection disable */ - tickstart = HAL_GetTick(); - - while((PWR->CR1 & PWR_CR1_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_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 ready */ - 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_PLLM_VALUE(RCC_OscInitStruct->PLL.PLLM)); - assert_param(IS_RCC_PLLN_VALUE(RCC_OscInitStruct->PLL.PLLN)); - assert_param(IS_RCC_PLLP_VALUE(RCC_OscInitStruct->PLL.PLLP)); - assert_param(IS_RCC_PLLQ_VALUE(RCC_OscInitStruct->PLL.PLLQ)); - - /* 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 main PLL clock source, multiplication and division factors. */ - __HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource, - RCC_OscInitStruct->PLL.PLLM, - RCC_OscInitStruct->PLL.PLLN, - RCC_OscInitStruct->PLL.PLLP, - RCC_OscInitStruct->PLL.PLLQ); - /* 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 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 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 depend on device selected - * - * @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. - * @note Depending on the device voltage range, the software has to set correctly - * HPRE[3:0] bits to ensure that HCLK not exceed the maximum allowed frequency - * (for more details refer to section above "Initialization/de-initialization functions") - * @retval None - */ -HAL_StatusTypeDef HAL_RCC_ClockConfig(RCC_ClkInitTypeDef *RCC_ClkInitStruct, uint32_t FLatency) -{ - uint32_t tickstart = 0; - - /* Check the parameters */ - 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) and the supply voltage 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; - } - } - - __HAL_RCC_SYSCLK_CONFIG(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; - } - } - __HAL_RCC_SYSCLK_CONFIG(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; -} - -/** - * @} - */ - -/** @defgroup RCC_Exported_Functions_Group2 Peripheral Control functions - * @brief RCC clocks control functions - * - @verbatim - =============================================================================== - ##### Peripheral Control functions ##### - =============================================================================== - [..] - This subsection provides a set of functions allowing to control the RCC Clocks - frequencies. - -@endverbatim - * @{ - */ - -/** - * @brief Selects the clock source to output on MCO1 pin(PA8) or on MCO2 pin(PC9). - * @note PA8/PC9 should be configured in alternate function mode. - * @param RCC_MCOx: specifies the output direction for the clock source. - * This parameter can be one of the following values: - * @arg RCC_MCO1: Clock source to output on MCO1 pin(PA8). - * @arg RCC_MCO2: Clock source to output on MCO2 pin(PC9). - * @param RCC_MCOSource: specifies the clock source to output. - * This parameter can be one of the following values: - * @arg RCC_MCO1SOURCE_HSI: HSI clock selected as MCO1 source - * @arg RCC_MCO1SOURCE_LSE: LSE clock selected as MCO1 source - * @arg RCC_MCO1SOURCE_HSE: HSE clock selected as MCO1 source - * @arg RCC_MCO1SOURCE_PLLCLK: main PLL clock selected as MCO1 source - * @arg RCC_MCO2SOURCE_SYSCLK: System clock (SYSCLK) selected as MCO2 source - * @arg RCC_MCO2SOURCE_PLLI2SCLK: PLLI2S clock selected as MCO2 source - * @arg RCC_MCO2SOURCE_HSE: HSE clock selected as MCO2 source - * @arg RCC_MCO2SOURCE_PLLCLK: main PLL clock selected as MCO2 source - * @param RCC_MCODiv: specifies the MCOx prescaler. - * This parameter can be one of the following values: - * @arg RCC_MCODIV_1: no division applied to MCOx clock - * @arg RCC_MCODIV_2: division by 2 applied to MCOx clock - * @arg RCC_MCODIV_3: division by 3 applied to MCOx clock - * @arg RCC_MCODIV_4: division by 4 applied to MCOx clock - * @arg RCC_MCODIV_5: division by 5 applied to MCOx clock - * @retval None - */ -void HAL_RCC_MCOConfig(uint32_t RCC_MCOx, uint32_t RCC_MCOSource, uint32_t RCC_MCODiv) -{ - GPIO_InitTypeDef GPIO_InitStruct; - /* Check the parameters */ - assert_param(IS_RCC_MCO(RCC_MCOx)); - assert_param(IS_RCC_MCODIV(RCC_MCODiv)); - /* RCC_MCO1 */ - if(RCC_MCOx == RCC_MCO1) - { - assert_param(IS_RCC_MCO1SOURCE(RCC_MCOSource)); - - /* MCO1 Clock Enable */ - MCO1_CLK_ENABLE(); - - /* Configure the MCO1 pin in alternate function mode */ - GPIO_InitStruct.Pin = MCO1_PIN; - GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; - GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; - GPIO_InitStruct.Pull = GPIO_NOPULL; - GPIO_InitStruct.Alternate = GPIO_AF0_MCO; - HAL_GPIO_Init(MCO1_GPIO_PORT, &GPIO_InitStruct); - - /* Mask MCO1 and MCO1PRE[2:0] bits then Select MCO1 clock source and prescaler */ - MODIFY_REG(RCC->CFGR, (RCC_CFGR_MCO1 | RCC_CFGR_MCO1PRE), (RCC_MCOSource | RCC_MCODiv)); - } - else - { - assert_param(IS_RCC_MCO2SOURCE(RCC_MCOSource)); - - /* MCO2 Clock Enable */ - MCO2_CLK_ENABLE(); - - /* Configure the MCO2 pin in alternate function mode */ - GPIO_InitStruct.Pin = MCO2_PIN; - GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; - GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; - GPIO_InitStruct.Pull = GPIO_NOPULL; - GPIO_InitStruct.Alternate = GPIO_AF0_MCO; - HAL_GPIO_Init(MCO2_GPIO_PORT, &GPIO_InitStruct); - - /* Mask MCO2 and MCO2PRE[2:0] bits then Select MCO2 clock source and prescaler */ - MODIFY_REG(RCC->CFGR, (RCC_CFGR_MCO2 | RCC_CFGR_MCO2PRE), (RCC_MCOSource | (RCC_MCODiv << 3))); - } -} - -/** - * @brief Enables the Clock Security System. - * @note If a failure is detected on the HSE oscillator clock, this oscillator - * is automatically disabled and an interrupt is generated to inform the - * software about the failure (Clock Security System Interrupt, CSSI), - * allowing the MCU to perform rescue operations. The CSSI is linked to - * the Cortex-M7 NMI (Non-Maskable Interrupt) exception vector. - * @retval None - */ -void HAL_RCC_EnableCSS(void) -{ - SET_BIT(RCC->CR, RCC_CR_CSSON); -} - -/** - * @brief Disables the Clock Security System. - * @retval None - */ -void HAL_RCC_DisableCSS(void) -{ - CLEAR_BIT(RCC->CR, RCC_CR_CSSON); -} - -/** - * @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(**) - * @note If SYSCLK source is PLL, function returns values based on HSE_VALUE(**) - * or HSI_VALUE(*) multiplied/divided by the PLL factors. - * @note (*) HSI_VALUE is a constant defined in stm32f7xx_hal_conf.h file (default value - * 16 MHz) but the real value may vary depending on the variations - * in voltage and temperature. - * @note (**) HSE_VALUE is a constant defined in stm32f7xx_hal_conf.h file (default value - * 25 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) -{ - uint32_t pllm = 0, pllvco = 0, pllp = 0; - uint32_t sysclockfreq = 0; - - /* Get SYSCLK source -------------------------------------------------------*/ - switch (RCC->CFGR & RCC_CFGR_SWS) - { - case RCC_SYSCLKSOURCE_STATUS_HSI: /* HSI used as system clock source */ - { - sysclockfreq = HSI_VALUE; - break; - } - case RCC_SYSCLKSOURCE_STATUS_HSE: /* HSE used as system clock source */ - { - sysclockfreq = HSE_VALUE; - break; - } - case RCC_SYSCLKSOURCE_STATUS_PLLCLK: /* PLL used as system clock source */ - { - /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN - SYSCLK = PLL_VCO / PLLP */ - pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM; - if (__HAL_RCC_GET_PLL_OSCSOURCE() != RCC_PLLCFGR_PLLSRC_HSI) - { - /* HSE used as PLL clock source */ - pllvco = ((HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN))); - } - else - { - /* HSI used as PLL clock source */ - pllvco = ((HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN))); - } - pllp = ((((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >> POSITION_VAL(RCC_PLLCFGR_PLLP)) + 1 ) *2); - - sysclockfreq = pllvco/pllp; - break; - } - default: - { - sysclockfreq = HSI_VALUE; - break; - } - } - return sysclockfreq; -} - -/** - * @brief Returns the HCLK frequency - * @note Each time HCLK changes, this function must be called to update the - * right HCLK value. Otherwise, any configuration based on this function will be incorrect. - * - * @note The SystemCoreClock CMSIS variable is used to store System Clock Frequency - * and updated within this function - * @retval HCLK frequency - */ -uint32_t HAL_RCC_GetHCLKFreq(void) -{ - SystemCoreClock = HAL_RCC_GetSysClockFreq() >> APBAHBPrescTable[(RCC->CFGR & RCC_CFGR_HPRE)>> POSITION_VAL(RCC_CFGR_HPRE)]; - return SystemCoreClock; -} - -/** - * @brief Returns the PCLK1 frequency - * @note Each time PCLK1 changes, this function must be called to update the - * right PCLK1 value. Otherwise, any configuration based on this function will be incorrect. - * @retval PCLK1 frequency - */ -uint32_t HAL_RCC_GetPCLK1Freq(void) -{ - /* Get HCLK source and Compute PCLK1 frequency ---------------------------*/ - return (HAL_RCC_GetHCLKFreq() >> APBAHBPrescTable[(RCC->CFGR & RCC_CFGR_PPRE1)>> POSITION_VAL(RCC_CFGR_PPRE1)]); -} - -/** - * @brief Returns the PCLK2 frequency - * @note Each time PCLK2 changes, this function must be called to update the - * right PCLK2 value. Otherwise, any configuration based on this function will be incorrect. - * @retval PCLK2 frequency - */ -uint32_t HAL_RCC_GetPCLK2Freq(void) -{ - /* Get HCLK source and Compute PCLK2 frequency ---------------------------*/ - return (HAL_RCC_GetHCLKFreq()>> APBAHBPrescTable[(RCC->CFGR & RCC_CFGR_PPRE2)>> POSITION_VAL(RCC_CFGR_PPRE2)]); -} - -/** - * @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) -{ - /* 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 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; - } - - /* 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->PLLCFGR & RCC_PLLCFGR_PLLSRC); - RCC_OscInitStruct->PLL.PLLM = (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM); - RCC_OscInitStruct->PLL.PLLN = (uint32_t)((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN)); - RCC_OscInitStruct->PLL.PLLP = (uint32_t)((((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) + RCC_PLLCFGR_PLLP_0) << 1) >> POSITION_VAL(RCC_PLLCFGR_PLLP)); - RCC_OscInitStruct->PLL.PLLQ = (uint32_t)((RCC->PLLCFGR & RCC_PLLCFGR_PLLQ) >> POSITION_VAL(RCC_PLLCFGR_PLLQ)); -} - -/** - * @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) -{ - /* 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); -} - -/** - * @brief This function handles the RCC CSS interrupt request. - * @note This API should be called under the NMI_Handler(). - * @retval None - */ -void HAL_RCC_NMI_IRQHandler(void) -{ - /* Check RCC CSSF flag */ - if(__HAL_RCC_GET_IT(RCC_IT_CSS)) - { - /* RCC Clock Security System interrupt user callback */ - HAL_RCC_CSSCallback(); - - /* Clear RCC CSS pending bit */ - __HAL_RCC_CLEAR_IT(RCC_IT_CSS); - } -} - -/** - * @brief RCC Clock Security System interrupt callback - * @retval None - */ -__weak void HAL_RCC_CSSCallback(void) -{ - /* NOTE : This function Should not be modified, when the callback is needed, - the HAL_RCC_CSSCallback could be implemented in the user file - */ -} - -/** - * @} - */ - -/** - * @} - */ - -#endif /* HAL_RCC_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |