copy from src/bare_test/stm32_key/fwlib/src/stm32f10x_rcc.c
copy to src/bare_test/2.Key/stdlib/src/stm32f10x_rcc.c
File was copied from src/bare_test/stm32_key/fwlib/src/stm32f10x_rcc.c |
| | |
| | | /**
|
| | | ******************************************************************************
|
| | | * @file stm32f10x_rcc.c
|
| | | * @author MCD Application Team
|
| | | * @version V3.5.0
|
| | | * @date 11-March-2011
|
| | | * @brief This file provides all the RCC firmware functions.
|
| | | ******************************************************************************
|
| | | * @attention
|
| | | *
|
| | | * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
|
| | | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
|
| | | * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
|
| | | * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
|
| | | * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
|
| | | * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
| | | *
|
| | | * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
|
| | | ******************************************************************************
|
| | | */
|
| | |
|
| | | /* Includes ------------------------------------------------------------------*/
|
| | | #include "stm32f10x_rcc.h"
|
| | |
|
| | | /** @addtogroup STM32F10x_StdPeriph_Driver
|
| | | * @{
|
| | | */
|
| | |
|
| | | /** @defgroup RCC |
| | | * @brief RCC driver modules
|
| | | * @{
|
| | | */ |
| | |
|
| | | /** @defgroup RCC_Private_TypesDefinitions
|
| | | * @{
|
| | | */
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | | /** @defgroup RCC_Private_Defines
|
| | | * @{
|
| | | */
|
| | |
|
| | | /* ------------ RCC registers bit address in the alias region ----------- */
|
| | | #define RCC_OFFSET (RCC_BASE - PERIPH_BASE)
|
| | |
|
| | | /* --- CR Register ---*/
|
| | |
|
| | | /* Alias word address of HSION bit */
|
| | | #define CR_OFFSET (RCC_OFFSET + 0x00)
|
| | | #define HSION_BitNumber 0x00
|
| | | #define CR_HSION_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (HSION_BitNumber * 4))
|
| | |
|
| | | /* Alias word address of PLLON bit */
|
| | | #define PLLON_BitNumber 0x18
|
| | | #define CR_PLLON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLLON_BitNumber * 4))
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | /* Alias word address of PLL2ON bit */
|
| | | #define PLL2ON_BitNumber 0x1A
|
| | | #define CR_PLL2ON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLL2ON_BitNumber * 4))
|
| | |
|
| | | /* Alias word address of PLL3ON bit */
|
| | | #define PLL3ON_BitNumber 0x1C
|
| | | #define CR_PLL3ON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLL3ON_BitNumber * 4))
|
| | | #endif /* STM32F10X_CL */ |
| | |
|
| | | /* Alias word address of CSSON bit */
|
| | | #define CSSON_BitNumber 0x13
|
| | | #define CR_CSSON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (CSSON_BitNumber * 4))
|
| | |
|
| | | /* --- CFGR Register ---*/
|
| | |
|
| | | /* Alias word address of USBPRE bit */
|
| | | #define CFGR_OFFSET (RCC_OFFSET + 0x04)
|
| | |
|
| | | #ifndef STM32F10X_CL
|
| | | #define USBPRE_BitNumber 0x16
|
| | | #define CFGR_USBPRE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (USBPRE_BitNumber * 4))
|
| | | #else
|
| | | #define OTGFSPRE_BitNumber 0x16
|
| | | #define CFGR_OTGFSPRE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (OTGFSPRE_BitNumber * 4))
|
| | | #endif /* STM32F10X_CL */ |
| | |
|
| | | /* --- BDCR Register ---*/
|
| | |
|
| | | /* Alias word address of RTCEN bit */
|
| | | #define BDCR_OFFSET (RCC_OFFSET + 0x20)
|
| | | #define RTCEN_BitNumber 0x0F
|
| | | #define BDCR_RTCEN_BB (PERIPH_BB_BASE + (BDCR_OFFSET * 32) + (RTCEN_BitNumber * 4))
|
| | |
|
| | | /* Alias word address of BDRST bit */
|
| | | #define BDRST_BitNumber 0x10
|
| | | #define BDCR_BDRST_BB (PERIPH_BB_BASE + (BDCR_OFFSET * 32) + (BDRST_BitNumber * 4))
|
| | |
|
| | | /* --- CSR Register ---*/
|
| | |
|
| | | /* Alias word address of LSION bit */
|
| | | #define CSR_OFFSET (RCC_OFFSET + 0x24)
|
| | | #define LSION_BitNumber 0x00
|
| | | #define CSR_LSION_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (LSION_BitNumber * 4))
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | /* --- CFGR2 Register ---*/
|
| | |
|
| | | /* Alias word address of I2S2SRC bit */
|
| | | #define CFGR2_OFFSET (RCC_OFFSET + 0x2C)
|
| | | #define I2S2SRC_BitNumber 0x11
|
| | | #define CFGR2_I2S2SRC_BB (PERIPH_BB_BASE + (CFGR2_OFFSET * 32) + (I2S2SRC_BitNumber * 4))
|
| | |
|
| | | /* Alias word address of I2S3SRC bit */
|
| | | #define I2S3SRC_BitNumber 0x12
|
| | | #define CFGR2_I2S3SRC_BB (PERIPH_BB_BASE + (CFGR2_OFFSET * 32) + (I2S3SRC_BitNumber * 4))
|
| | | #endif /* STM32F10X_CL */
|
| | |
|
| | | /* ---------------------- RCC registers bit mask ------------------------ */
|
| | |
|
| | | /* CR register bit mask */
|
| | | #define CR_HSEBYP_Reset ((uint32_t)0xFFFBFFFF)
|
| | | #define CR_HSEBYP_Set ((uint32_t)0x00040000)
|
| | | #define CR_HSEON_Reset ((uint32_t)0xFFFEFFFF)
|
| | | #define CR_HSEON_Set ((uint32_t)0x00010000)
|
| | | #define CR_HSITRIM_Mask ((uint32_t)0xFFFFFF07)
|
| | |
|
| | | /* CFGR register bit mask */
|
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) || defined (STM32F10X_CL) |
| | | #define CFGR_PLL_Mask ((uint32_t)0xFFC2FFFF)
|
| | | #else
|
| | | #define CFGR_PLL_Mask ((uint32_t)0xFFC0FFFF)
|
| | | #endif /* STM32F10X_CL */ |
| | |
|
| | | #define CFGR_PLLMull_Mask ((uint32_t)0x003C0000)
|
| | | #define CFGR_PLLSRC_Mask ((uint32_t)0x00010000)
|
| | | #define CFGR_PLLXTPRE_Mask ((uint32_t)0x00020000)
|
| | | #define CFGR_SWS_Mask ((uint32_t)0x0000000C)
|
| | | #define CFGR_SW_Mask ((uint32_t)0xFFFFFFFC)
|
| | | #define CFGR_HPRE_Reset_Mask ((uint32_t)0xFFFFFF0F)
|
| | | #define CFGR_HPRE_Set_Mask ((uint32_t)0x000000F0)
|
| | | #define CFGR_PPRE1_Reset_Mask ((uint32_t)0xFFFFF8FF)
|
| | | #define CFGR_PPRE1_Set_Mask ((uint32_t)0x00000700)
|
| | | #define CFGR_PPRE2_Reset_Mask ((uint32_t)0xFFFFC7FF)
|
| | | #define CFGR_PPRE2_Set_Mask ((uint32_t)0x00003800)
|
| | | #define CFGR_ADCPRE_Reset_Mask ((uint32_t)0xFFFF3FFF)
|
| | | #define CFGR_ADCPRE_Set_Mask ((uint32_t)0x0000C000)
|
| | |
|
| | | /* CSR register bit mask */
|
| | | #define CSR_RMVF_Set ((uint32_t)0x01000000)
|
| | |
|
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) || defined (STM32F10X_CL) |
| | | /* CFGR2 register bit mask */
|
| | | #define CFGR2_PREDIV1SRC ((uint32_t)0x00010000)
|
| | | #define CFGR2_PREDIV1 ((uint32_t)0x0000000F)
|
| | | #endif
|
| | | #ifdef STM32F10X_CL
|
| | | #define CFGR2_PREDIV2 ((uint32_t)0x000000F0)
|
| | | #define CFGR2_PLL2MUL ((uint32_t)0x00000F00)
|
| | | #define CFGR2_PLL3MUL ((uint32_t)0x0000F000)
|
| | | #endif /* STM32F10X_CL */ |
| | |
|
| | | /* RCC Flag Mask */
|
| | | #define FLAG_Mask ((uint8_t)0x1F)
|
| | |
|
| | | /* CIR register byte 2 (Bits[15:8]) base address */
|
| | | #define CIR_BYTE2_ADDRESS ((uint32_t)0x40021009)
|
| | |
|
| | | /* CIR register byte 3 (Bits[23:16]) base address */
|
| | | #define CIR_BYTE3_ADDRESS ((uint32_t)0x4002100A)
|
| | |
|
| | | /* CFGR register byte 4 (Bits[31:24]) base address */
|
| | | #define CFGR_BYTE4_ADDRESS ((uint32_t)0x40021007)
|
| | |
|
| | | /* BDCR register base address */
|
| | | #define BDCR_ADDRESS (PERIPH_BASE + BDCR_OFFSET)
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | | /** @defgroup RCC_Private_Macros
|
| | | * @{
|
| | | */ |
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | | /** @defgroup RCC_Private_Variables
|
| | | * @{
|
| | | */ |
| | |
|
| | | static __I uint8_t APBAHBPrescTable[16] = {0, 0, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 6, 7, 8, 9};
|
| | | static __I uint8_t ADCPrescTable[4] = {2, 4, 6, 8};
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | | /** @defgroup RCC_Private_FunctionPrototypes
|
| | | * @{
|
| | | */
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | | /** @defgroup RCC_Private_Functions
|
| | | * @{
|
| | | */
|
| | |
|
| | | /**
|
| | | * @brief Resets the RCC clock configuration to the default reset state.
|
| | | * @param None
|
| | | * @retval None
|
| | | */
|
| | | void RCC_DeInit(void)
|
| | | {
|
| | | /* Set HSION bit */
|
| | | RCC->CR |= (uint32_t)0x00000001;
|
| | |
|
| | | /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
|
| | | #ifndef STM32F10X_CL
|
| | | RCC->CFGR &= (uint32_t)0xF8FF0000;
|
| | | #else
|
| | | RCC->CFGR &= (uint32_t)0xF0FF0000;
|
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /* Reset HSEON, CSSON and PLLON bits */
|
| | | RCC->CR &= (uint32_t)0xFEF6FFFF;
|
| | |
|
| | | /* Reset HSEBYP bit */
|
| | | RCC->CR &= (uint32_t)0xFFFBFFFF;
|
| | |
|
| | | /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
|
| | | RCC->CFGR &= (uint32_t)0xFF80FFFF;
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | /* Reset PLL2ON and PLL3ON bits */
|
| | | RCC->CR &= (uint32_t)0xEBFFFFFF;
|
| | |
|
| | | /* Disable all interrupts and clear pending bits */
|
| | | RCC->CIR = 0x00FF0000;
|
| | |
|
| | | /* Reset CFGR2 register */
|
| | | RCC->CFGR2 = 0x00000000;
|
| | | #elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
|
| | | /* Disable all interrupts and clear pending bits */
|
| | | RCC->CIR = 0x009F0000;
|
| | |
|
| | | /* Reset CFGR2 register */
|
| | | RCC->CFGR2 = 0x00000000; |
| | | #else
|
| | | /* Disable all interrupts and clear pending bits */
|
| | | RCC->CIR = 0x009F0000;
|
| | | #endif /* STM32F10X_CL */
|
| | |
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the External High Speed oscillator (HSE).
|
| | | * @note HSE can not be stopped if it is used directly or through the PLL as system clock.
|
| | | * @param RCC_HSE: specifies the new state of the HSE.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_HSE_OFF: HSE oscillator OFF
|
| | | * @arg RCC_HSE_ON: HSE oscillator ON
|
| | | * @arg RCC_HSE_Bypass: HSE oscillator bypassed with external clock
|
| | | * @retval None
|
| | | */
|
| | | void RCC_HSEConfig(uint32_t RCC_HSE)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_HSE(RCC_HSE));
|
| | | /* Reset HSEON and HSEBYP bits before configuring the HSE ------------------*/
|
| | | /* Reset HSEON bit */
|
| | | RCC->CR &= CR_HSEON_Reset;
|
| | | /* Reset HSEBYP bit */
|
| | | RCC->CR &= CR_HSEBYP_Reset;
|
| | | /* Configure HSE (RCC_HSE_OFF is already covered by the code section above) */
|
| | | switch(RCC_HSE)
|
| | | {
|
| | | case RCC_HSE_ON:
|
| | | /* Set HSEON bit */
|
| | | RCC->CR |= CR_HSEON_Set;
|
| | | break;
|
| | | |
| | | case RCC_HSE_Bypass:
|
| | | /* Set HSEBYP and HSEON bits */
|
| | | RCC->CR |= CR_HSEBYP_Set | CR_HSEON_Set;
|
| | | break;
|
| | | |
| | | default:
|
| | | break;
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Waits for HSE start-up.
|
| | | * @param None
|
| | | * @retval An ErrorStatus enumuration value:
|
| | | * - SUCCESS: HSE oscillator is stable and ready to use
|
| | | * - ERROR: HSE oscillator not yet ready
|
| | | */
|
| | | ErrorStatus RCC_WaitForHSEStartUp(void)
|
| | | {
|
| | | __IO uint32_t StartUpCounter = 0;
|
| | | ErrorStatus status = ERROR;
|
| | | FlagStatus HSEStatus = RESET;
|
| | | |
| | | /* Wait till HSE is ready and if Time out is reached exit */
|
| | | do
|
| | | {
|
| | | HSEStatus = RCC_GetFlagStatus(RCC_FLAG_HSERDY);
|
| | | StartUpCounter++; |
| | | } while((StartUpCounter != HSE_STARTUP_TIMEOUT) && (HSEStatus == RESET));
|
| | | |
| | | if (RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET)
|
| | | {
|
| | | status = SUCCESS;
|
| | | }
|
| | | else
|
| | | {
|
| | | status = ERROR;
|
| | | } |
| | | return (status);
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Adjusts the Internal High Speed oscillator (HSI) calibration value.
|
| | | * @param HSICalibrationValue: specifies the calibration trimming value.
|
| | | * This parameter must be a number between 0 and 0x1F.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_AdjustHSICalibrationValue(uint8_t HSICalibrationValue)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_CALIBRATION_VALUE(HSICalibrationValue));
|
| | | tmpreg = RCC->CR;
|
| | | /* Clear HSITRIM[4:0] bits */
|
| | | tmpreg &= CR_HSITRIM_Mask;
|
| | | /* Set the HSITRIM[4:0] bits according to HSICalibrationValue value */
|
| | | tmpreg |= (uint32_t)HSICalibrationValue << 3;
|
| | | /* Store the new value */
|
| | | RCC->CR = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the Internal High Speed oscillator (HSI).
|
| | | * @note HSI can not be stopped if it is used directly or through the PLL as system clock.
|
| | | * @param NewState: new state of the HSI. This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_HSICmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | *(__IO uint32_t *) CR_HSION_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the PLL clock source and multiplication factor.
|
| | | * @note This function must be used only when the PLL is disabled.
|
| | | * @param RCC_PLLSource: specifies the PLL entry clock source.
|
| | | * For @b STM32_Connectivity_line_devices or @b STM32_Value_line_devices, |
| | | * this parameter can be one of the following values:
|
| | | * @arg RCC_PLLSource_HSI_Div2: HSI oscillator clock divided by 2 selected as PLL clock entry
|
| | | * @arg RCC_PLLSource_PREDIV1: PREDIV1 clock selected as PLL clock entry
|
| | | * For @b other_STM32_devices, this parameter can be one of the following values:
|
| | | * @arg RCC_PLLSource_HSI_Div2: HSI oscillator clock divided by 2 selected as PLL clock entry
|
| | | * @arg RCC_PLLSource_HSE_Div1: HSE oscillator clock selected as PLL clock entry
|
| | | * @arg RCC_PLLSource_HSE_Div2: HSE oscillator clock divided by 2 selected as PLL clock entry |
| | | * @param RCC_PLLMul: specifies the PLL multiplication factor.
|
| | | * For @b STM32_Connectivity_line_devices, this parameter can be RCC_PLLMul_x where x:{[4,9], 6_5}
|
| | | * For @b other_STM32_devices, this parameter can be RCC_PLLMul_x where x:[2,16] |
| | | * @retval None
|
| | | */
|
| | | void RCC_PLLConfig(uint32_t RCC_PLLSource, uint32_t RCC_PLLMul)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | |
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PLL_SOURCE(RCC_PLLSource));
|
| | | assert_param(IS_RCC_PLL_MUL(RCC_PLLMul));
|
| | |
|
| | | tmpreg = RCC->CFGR;
|
| | | /* Clear PLLSRC, PLLXTPRE and PLLMUL[3:0] bits */
|
| | | tmpreg &= CFGR_PLL_Mask;
|
| | | /* Set the PLL configuration bits */
|
| | | tmpreg |= RCC_PLLSource | RCC_PLLMul;
|
| | | /* Store the new value */
|
| | | RCC->CFGR = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the PLL.
|
| | | * @note The PLL can not be disabled if it is used as system clock.
|
| | | * @param NewState: new state of the PLL. This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PLLCmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | |
|
| | | *(__IO uint32_t *) CR_PLLON_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) || defined (STM32F10X_CL)
|
| | | /**
|
| | | * @brief Configures the PREDIV1 division factor.
|
| | | * @note |
| | | * - This function must be used only when the PLL is disabled.
|
| | | * - This function applies only to STM32 Connectivity line and Value line |
| | | * devices.
|
| | | * @param RCC_PREDIV1_Source: specifies the PREDIV1 clock source.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_PREDIV1_Source_HSE: HSE selected as PREDIV1 clock
|
| | | * @arg RCC_PREDIV1_Source_PLL2: PLL2 selected as PREDIV1 clock
|
| | | * @note |
| | | * For @b STM32_Value_line_devices this parameter is always RCC_PREDIV1_Source_HSE |
| | | * @param RCC_PREDIV1_Div: specifies the PREDIV1 clock division factor.
|
| | | * This parameter can be RCC_PREDIV1_Divx where x:[1,16]
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PREDIV1Config(uint32_t RCC_PREDIV1_Source, uint32_t RCC_PREDIV1_Div)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | |
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PREDIV1_SOURCE(RCC_PREDIV1_Source));
|
| | | assert_param(IS_RCC_PREDIV1(RCC_PREDIV1_Div));
|
| | |
|
| | | tmpreg = RCC->CFGR2;
|
| | | /* Clear PREDIV1[3:0] and PREDIV1SRC bits */
|
| | | tmpreg &= ~(CFGR2_PREDIV1 | CFGR2_PREDIV1SRC);
|
| | | /* Set the PREDIV1 clock source and division factor */
|
| | | tmpreg |= RCC_PREDIV1_Source | RCC_PREDIV1_Div ;
|
| | | /* Store the new value */
|
| | | RCC->CFGR2 = tmpreg;
|
| | | }
|
| | | #endif
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | /**
|
| | | * @brief Configures the PREDIV2 division factor.
|
| | | * @note |
| | | * - This function must be used only when both PLL2 and PLL3 are disabled.
|
| | | * - This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_PREDIV2_Div: specifies the PREDIV2 clock division factor.
|
| | | * This parameter can be RCC_PREDIV2_Divx where x:[1,16]
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PREDIV2Config(uint32_t RCC_PREDIV2_Div)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | |
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PREDIV2(RCC_PREDIV2_Div));
|
| | |
|
| | | tmpreg = RCC->CFGR2;
|
| | | /* Clear PREDIV2[3:0] bits */
|
| | | tmpreg &= ~CFGR2_PREDIV2;
|
| | | /* Set the PREDIV2 division factor */
|
| | | tmpreg |= RCC_PREDIV2_Div;
|
| | | /* Store the new value */
|
| | | RCC->CFGR2 = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the PLL2 multiplication factor.
|
| | | * @note
|
| | | * - This function must be used only when the PLL2 is disabled.
|
| | | * - This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_PLL2Mul: specifies the PLL2 multiplication factor.
|
| | | * This parameter can be RCC_PLL2Mul_x where x:{[8,14], 16, 20}
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PLL2Config(uint32_t RCC_PLL2Mul)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | |
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PLL2_MUL(RCC_PLL2Mul));
|
| | |
|
| | | tmpreg = RCC->CFGR2;
|
| | | /* Clear PLL2Mul[3:0] bits */
|
| | | tmpreg &= ~CFGR2_PLL2MUL;
|
| | | /* Set the PLL2 configuration bits */
|
| | | tmpreg |= RCC_PLL2Mul;
|
| | | /* Store the new value */
|
| | | RCC->CFGR2 = tmpreg;
|
| | | }
|
| | |
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the PLL2.
|
| | | * @note |
| | | * - The PLL2 can not be disabled if it is used indirectly as system clock
|
| | | * (i.e. it is used as PLL clock entry that is used as System clock).
|
| | | * - This function applies only to STM32 Connectivity line devices.
|
| | | * @param NewState: new state of the PLL2. This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PLL2Cmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | |
|
| | | *(__IO uint32_t *) CR_PLL2ON_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | |
|
| | | /**
|
| | | * @brief Configures the PLL3 multiplication factor.
|
| | | * @note |
| | | * - This function must be used only when the PLL3 is disabled.
|
| | | * - This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_PLL3Mul: specifies the PLL3 multiplication factor.
|
| | | * This parameter can be RCC_PLL3Mul_x where x:{[8,14], 16, 20}
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PLL3Config(uint32_t RCC_PLL3Mul)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | |
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PLL3_MUL(RCC_PLL3Mul));
|
| | |
|
| | | tmpreg = RCC->CFGR2;
|
| | | /* Clear PLL3Mul[3:0] bits */
|
| | | tmpreg &= ~CFGR2_PLL3MUL;
|
| | | /* Set the PLL3 configuration bits */
|
| | | tmpreg |= RCC_PLL3Mul;
|
| | | /* Store the new value */
|
| | | RCC->CFGR2 = tmpreg;
|
| | | }
|
| | |
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the PLL3.
|
| | | * @note This function applies only to STM32 Connectivity line devices.
|
| | | * @param NewState: new state of the PLL3. This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PLL3Cmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | |
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | *(__IO uint32_t *) CR_PLL3ON_BB = (uint32_t)NewState;
|
| | | }
|
| | | #endif /* STM32F10X_CL */
|
| | |
|
| | | /**
|
| | | * @brief Configures the system clock (SYSCLK).
|
| | | * @param RCC_SYSCLKSource: specifies the clock source used as system clock.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_SYSCLKSource_HSI: HSI selected as system clock
|
| | | * @arg RCC_SYSCLKSource_HSE: HSE selected as system clock
|
| | | * @arg RCC_SYSCLKSource_PLLCLK: PLL selected as system clock
|
| | | * @retval None
|
| | | */
|
| | | void RCC_SYSCLKConfig(uint32_t RCC_SYSCLKSource)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_SYSCLK_SOURCE(RCC_SYSCLKSource));
|
| | | tmpreg = RCC->CFGR;
|
| | | /* Clear SW[1:0] bits */
|
| | | tmpreg &= CFGR_SW_Mask;
|
| | | /* Set SW[1:0] bits according to RCC_SYSCLKSource value */
|
| | | tmpreg |= RCC_SYSCLKSource;
|
| | | /* Store the new value */
|
| | | RCC->CFGR = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Returns the clock source used as system clock.
|
| | | * @param None
|
| | | * @retval The clock source used as system clock. The returned value can
|
| | | * be one of the following:
|
| | | * - 0x00: HSI used as system clock
|
| | | * - 0x04: HSE used as system clock
|
| | | * - 0x08: PLL used as system clock
|
| | | */
|
| | | uint8_t RCC_GetSYSCLKSource(void)
|
| | | {
|
| | | return ((uint8_t)(RCC->CFGR & CFGR_SWS_Mask));
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the AHB clock (HCLK).
|
| | | * @param RCC_SYSCLK: defines the AHB clock divider. This clock is derived from |
| | | * the system clock (SYSCLK).
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_SYSCLK_Div1: AHB clock = SYSCLK
|
| | | * @arg RCC_SYSCLK_Div2: AHB clock = SYSCLK/2
|
| | | * @arg RCC_SYSCLK_Div4: AHB clock = SYSCLK/4
|
| | | * @arg RCC_SYSCLK_Div8: AHB clock = SYSCLK/8
|
| | | * @arg RCC_SYSCLK_Div16: AHB clock = SYSCLK/16
|
| | | * @arg RCC_SYSCLK_Div64: AHB clock = SYSCLK/64
|
| | | * @arg RCC_SYSCLK_Div128: AHB clock = SYSCLK/128
|
| | | * @arg RCC_SYSCLK_Div256: AHB clock = SYSCLK/256
|
| | | * @arg RCC_SYSCLK_Div512: AHB clock = SYSCLK/512
|
| | | * @retval None
|
| | | */
|
| | | void RCC_HCLKConfig(uint32_t RCC_SYSCLK)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_HCLK(RCC_SYSCLK));
|
| | | tmpreg = RCC->CFGR;
|
| | | /* Clear HPRE[3:0] bits */
|
| | | tmpreg &= CFGR_HPRE_Reset_Mask;
|
| | | /* Set HPRE[3:0] bits according to RCC_SYSCLK value */
|
| | | tmpreg |= RCC_SYSCLK;
|
| | | /* Store the new value */
|
| | | RCC->CFGR = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the Low Speed APB clock (PCLK1).
|
| | | * @param RCC_HCLK: defines the APB1 clock divider. This clock is derived from |
| | | * the AHB clock (HCLK).
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_HCLK_Div1: APB1 clock = HCLK
|
| | | * @arg RCC_HCLK_Div2: APB1 clock = HCLK/2
|
| | | * @arg RCC_HCLK_Div4: APB1 clock = HCLK/4
|
| | | * @arg RCC_HCLK_Div8: APB1 clock = HCLK/8
|
| | | * @arg RCC_HCLK_Div16: APB1 clock = HCLK/16
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PCLK1Config(uint32_t RCC_HCLK)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PCLK(RCC_HCLK));
|
| | | tmpreg = RCC->CFGR;
|
| | | /* Clear PPRE1[2:0] bits */
|
| | | tmpreg &= CFGR_PPRE1_Reset_Mask;
|
| | | /* Set PPRE1[2:0] bits according to RCC_HCLK value */
|
| | | tmpreg |= RCC_HCLK;
|
| | | /* Store the new value */
|
| | | RCC->CFGR = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the High Speed APB clock (PCLK2).
|
| | | * @param RCC_HCLK: defines the APB2 clock divider. This clock is derived from |
| | | * the AHB clock (HCLK).
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_HCLK_Div1: APB2 clock = HCLK
|
| | | * @arg RCC_HCLK_Div2: APB2 clock = HCLK/2
|
| | | * @arg RCC_HCLK_Div4: APB2 clock = HCLK/4
|
| | | * @arg RCC_HCLK_Div8: APB2 clock = HCLK/8
|
| | | * @arg RCC_HCLK_Div16: APB2 clock = HCLK/16
|
| | | * @retval None
|
| | | */
|
| | | void RCC_PCLK2Config(uint32_t RCC_HCLK)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_PCLK(RCC_HCLK));
|
| | | tmpreg = RCC->CFGR;
|
| | | /* Clear PPRE2[2:0] bits */
|
| | | tmpreg &= CFGR_PPRE2_Reset_Mask;
|
| | | /* Set PPRE2[2:0] bits according to RCC_HCLK value */
|
| | | tmpreg |= RCC_HCLK << 3;
|
| | | /* Store the new value */
|
| | | RCC->CFGR = tmpreg;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the specified RCC interrupts.
|
| | | * @param RCC_IT: specifies the RCC interrupt sources to be enabled or disabled.
|
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be any combination
|
| | | * of the following values |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt
|
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt
|
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt
|
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt
|
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt
|
| | | * @arg RCC_IT_PLL2RDY: PLL2 ready interrupt
|
| | | * @arg RCC_IT_PLL3RDY: PLL3 ready interrupt
|
| | | * |
| | | * For @b other_STM32_devices, this parameter can be any combination of the |
| | | * following values |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt
|
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt
|
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt
|
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt
|
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt
|
| | | * |
| | | * @param NewState: new state of the specified RCC interrupts.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_ITConfig(uint8_t RCC_IT, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_IT(RCC_IT));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | /* Perform Byte access to RCC_CIR bits to enable the selected interrupts */
|
| | | *(__IO uint8_t *) CIR_BYTE2_ADDRESS |= RCC_IT;
|
| | | }
|
| | | else
|
| | | {
|
| | | /* Perform Byte access to RCC_CIR bits to disable the selected interrupts */
|
| | | *(__IO uint8_t *) CIR_BYTE2_ADDRESS &= (uint8_t)~RCC_IT;
|
| | | }
|
| | | }
|
| | |
|
| | | #ifndef STM32F10X_CL
|
| | | /**
|
| | | * @brief Configures the USB clock (USBCLK).
|
| | | * @param RCC_USBCLKSource: specifies the USB clock source. This clock is |
| | | * derived from the PLL output.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_USBCLKSource_PLLCLK_1Div5: PLL clock divided by 1,5 selected as USB |
| | | * clock source
|
| | | * @arg RCC_USBCLKSource_PLLCLK_Div1: PLL clock selected as USB clock source
|
| | | * @retval None
|
| | | */
|
| | | void RCC_USBCLKConfig(uint32_t RCC_USBCLKSource)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_USBCLK_SOURCE(RCC_USBCLKSource));
|
| | |
|
| | | *(__IO uint32_t *) CFGR_USBPRE_BB = RCC_USBCLKSource;
|
| | | }
|
| | | #else
|
| | | /**
|
| | | * @brief Configures the USB OTG FS clock (OTGFSCLK).
|
| | | * This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_OTGFSCLKSource: specifies the USB OTG FS clock source.
|
| | | * This clock is derived from the PLL output.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_OTGFSCLKSource_PLLVCO_Div3: PLL VCO clock divided by 2 selected as USB OTG FS clock source
|
| | | * @arg RCC_OTGFSCLKSource_PLLVCO_Div2: PLL VCO clock divided by 2 selected as USB OTG FS clock source
|
| | | * @retval None
|
| | | */
|
| | | void RCC_OTGFSCLKConfig(uint32_t RCC_OTGFSCLKSource)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_OTGFSCLK_SOURCE(RCC_OTGFSCLKSource));
|
| | |
|
| | | *(__IO uint32_t *) CFGR_OTGFSPRE_BB = RCC_OTGFSCLKSource;
|
| | | }
|
| | | #endif /* STM32F10X_CL */ |
| | |
|
| | | /**
|
| | | * @brief Configures the ADC clock (ADCCLK).
|
| | | * @param RCC_PCLK2: defines the ADC clock divider. This clock is derived from |
| | | * the APB2 clock (PCLK2).
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_PCLK2_Div2: ADC clock = PCLK2/2
|
| | | * @arg RCC_PCLK2_Div4: ADC clock = PCLK2/4
|
| | | * @arg RCC_PCLK2_Div6: ADC clock = PCLK2/6
|
| | | * @arg RCC_PCLK2_Div8: ADC clock = PCLK2/8
|
| | | * @retval None
|
| | | */
|
| | | void RCC_ADCCLKConfig(uint32_t RCC_PCLK2)
|
| | | {
|
| | | uint32_t tmpreg = 0;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_ADCCLK(RCC_PCLK2));
|
| | | tmpreg = RCC->CFGR;
|
| | | /* Clear ADCPRE[1:0] bits */
|
| | | tmpreg &= CFGR_ADCPRE_Reset_Mask;
|
| | | /* Set ADCPRE[1:0] bits according to RCC_PCLK2 value */
|
| | | tmpreg |= RCC_PCLK2;
|
| | | /* Store the new value */
|
| | | RCC->CFGR = tmpreg;
|
| | | }
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | /**
|
| | | * @brief Configures the I2S2 clock source(I2S2CLK).
|
| | | * @note
|
| | | * - This function must be called before enabling I2S2 APB clock.
|
| | | * - This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_I2S2CLKSource: specifies the I2S2 clock source.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_I2S2CLKSource_SYSCLK: system clock selected as I2S2 clock entry
|
| | | * @arg RCC_I2S2CLKSource_PLL3_VCO: PLL3 VCO clock selected as I2S2 clock entry
|
| | | * @retval None
|
| | | */
|
| | | void RCC_I2S2CLKConfig(uint32_t RCC_I2S2CLKSource)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_I2S2CLK_SOURCE(RCC_I2S2CLKSource));
|
| | |
|
| | | *(__IO uint32_t *) CFGR2_I2S2SRC_BB = RCC_I2S2CLKSource;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the I2S3 clock source(I2S2CLK).
|
| | | * @note
|
| | | * - This function must be called before enabling I2S3 APB clock.
|
| | | * - This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_I2S3CLKSource: specifies the I2S3 clock source.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_I2S3CLKSource_SYSCLK: system clock selected as I2S3 clock entry
|
| | | * @arg RCC_I2S3CLKSource_PLL3_VCO: PLL3 VCO clock selected as I2S3 clock entry
|
| | | * @retval None
|
| | | */
|
| | | void RCC_I2S3CLKConfig(uint32_t RCC_I2S3CLKSource)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_I2S3CLK_SOURCE(RCC_I2S3CLKSource));
|
| | |
|
| | | *(__IO uint32_t *) CFGR2_I2S3SRC_BB = RCC_I2S3CLKSource;
|
| | | }
|
| | | #endif /* STM32F10X_CL */
|
| | |
|
| | | /**
|
| | | * @brief Configures the External Low Speed oscillator (LSE).
|
| | | * @param RCC_LSE: specifies the new state of the LSE.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_LSE_OFF: LSE oscillator OFF
|
| | | * @arg RCC_LSE_ON: LSE oscillator ON
|
| | | * @arg RCC_LSE_Bypass: LSE oscillator bypassed with external clock
|
| | | * @retval None
|
| | | */
|
| | | void RCC_LSEConfig(uint8_t RCC_LSE)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_LSE(RCC_LSE));
|
| | | /* Reset LSEON and LSEBYP bits before configuring the LSE ------------------*/
|
| | | /* Reset LSEON bit */
|
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_OFF;
|
| | | /* Reset LSEBYP bit */
|
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_OFF;
|
| | | /* Configure LSE (RCC_LSE_OFF is already covered by the code section above) */
|
| | | switch(RCC_LSE)
|
| | | {
|
| | | case RCC_LSE_ON:
|
| | | /* Set LSEON bit */
|
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_ON;
|
| | | break;
|
| | | |
| | | case RCC_LSE_Bypass:
|
| | | /* Set LSEBYP and LSEON bits */
|
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_Bypass | RCC_LSE_ON;
|
| | | break; |
| | | |
| | | default:
|
| | | break; |
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the Internal Low Speed oscillator (LSI).
|
| | | * @note LSI can not be disabled if the IWDG is running.
|
| | | * @param NewState: new state of the LSI. This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_LSICmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | *(__IO uint32_t *) CSR_LSION_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Configures the RTC clock (RTCCLK).
|
| | | * @note Once the RTC clock is selected it can't be changed unless the Backup domain is reset.
|
| | | * @param RCC_RTCCLKSource: specifies the RTC clock source.
|
| | | * This parameter can be one of the following values:
|
| | | * @arg RCC_RTCCLKSource_LSE: LSE selected as RTC clock
|
| | | * @arg RCC_RTCCLKSource_LSI: LSI selected as RTC clock
|
| | | * @arg RCC_RTCCLKSource_HSE_Div128: HSE clock divided by 128 selected as RTC clock
|
| | | * @retval None
|
| | | */
|
| | | void RCC_RTCCLKConfig(uint32_t RCC_RTCCLKSource)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_RTCCLK_SOURCE(RCC_RTCCLKSource));
|
| | | /* Select the RTC clock source */
|
| | | RCC->BDCR |= RCC_RTCCLKSource;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the RTC clock.
|
| | | * @note This function must be used only after the RTC clock was selected using the RCC_RTCCLKConfig function.
|
| | | * @param NewState: new state of the RTC clock. This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_RTCCLKCmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | *(__IO uint32_t *) BDCR_RTCEN_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Returns the frequencies of different on chip clocks.
|
| | | * @param RCC_Clocks: pointer to a RCC_ClocksTypeDef structure which will hold
|
| | | * the clocks frequencies.
|
| | | * @note The result of this function could be not correct when using |
| | | * fractional value for HSE crystal. |
| | | * @retval None
|
| | | */
|
| | | void RCC_GetClocksFreq(RCC_ClocksTypeDef* RCC_Clocks)
|
| | | {
|
| | | uint32_t tmp = 0, pllmull = 0, pllsource = 0, presc = 0;
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | uint32_t prediv1source = 0, prediv1factor = 0, prediv2factor = 0, pll2mull = 0;
|
| | | #endif /* STM32F10X_CL */
|
| | |
|
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
|
| | | uint32_t prediv1factor = 0;
|
| | | #endif
|
| | | |
| | | /* Get SYSCLK source -------------------------------------------------------*/
|
| | | tmp = RCC->CFGR & CFGR_SWS_Mask;
|
| | | |
| | | switch (tmp)
|
| | | {
|
| | | case 0x00: /* HSI used as system clock */
|
| | | RCC_Clocks->SYSCLK_Frequency = HSI_VALUE;
|
| | | break;
|
| | | case 0x04: /* HSE used as system clock */
|
| | | RCC_Clocks->SYSCLK_Frequency = HSE_VALUE;
|
| | | break;
|
| | | case 0x08: /* PLL used as system clock */
|
| | |
|
| | | /* Get PLL clock source and multiplication factor ----------------------*/
|
| | | pllmull = RCC->CFGR & CFGR_PLLMull_Mask;
|
| | | pllsource = RCC->CFGR & CFGR_PLLSRC_Mask;
|
| | | |
| | | #ifndef STM32F10X_CL |
| | | pllmull = ( pllmull >> 18) + 2;
|
| | | |
| | | if (pllsource == 0x00)
|
| | | {/* HSI oscillator clock divided by 2 selected as PLL clock entry */
|
| | | RCC_Clocks->SYSCLK_Frequency = (HSI_VALUE >> 1) * pllmull;
|
| | | }
|
| | | else
|
| | | {
|
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
|
| | | prediv1factor = (RCC->CFGR2 & CFGR2_PREDIV1) + 1;
|
| | | /* HSE oscillator clock selected as PREDIV1 clock entry */
|
| | | RCC_Clocks->SYSCLK_Frequency = (HSE_VALUE / prediv1factor) * pllmull; |
| | | #else
|
| | | /* HSE selected as PLL clock entry */
|
| | | if ((RCC->CFGR & CFGR_PLLXTPRE_Mask) != (uint32_t)RESET)
|
| | | {/* HSE oscillator clock divided by 2 */
|
| | | RCC_Clocks->SYSCLK_Frequency = (HSE_VALUE >> 1) * pllmull;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC_Clocks->SYSCLK_Frequency = HSE_VALUE * pllmull;
|
| | | }
|
| | | #endif
|
| | | }
|
| | | #else
|
| | | pllmull = pllmull >> 18;
|
| | | |
| | | if (pllmull != 0x0D)
|
| | | {
|
| | | pllmull += 2;
|
| | | }
|
| | | else
|
| | | { /* PLL multiplication factor = PLL input clock * 6.5 */
|
| | | pllmull = 13 / 2; |
| | | }
|
| | | |
| | | if (pllsource == 0x00)
|
| | | {/* HSI oscillator clock divided by 2 selected as PLL clock entry */
|
| | | RCC_Clocks->SYSCLK_Frequency = (HSI_VALUE >> 1) * pllmull;
|
| | | }
|
| | | else
|
| | | {/* PREDIV1 selected as PLL clock entry */
|
| | | |
| | | /* Get PREDIV1 clock source and division factor */
|
| | | prediv1source = RCC->CFGR2 & CFGR2_PREDIV1SRC;
|
| | | prediv1factor = (RCC->CFGR2 & CFGR2_PREDIV1) + 1;
|
| | | |
| | | if (prediv1source == 0)
|
| | | { /* HSE oscillator clock selected as PREDIV1 clock entry */
|
| | | RCC_Clocks->SYSCLK_Frequency = (HSE_VALUE / prediv1factor) * pllmull; |
| | | }
|
| | | else
|
| | | {/* PLL2 clock selected as PREDIV1 clock entry */
|
| | | |
| | | /* Get PREDIV2 division factor and PLL2 multiplication factor */
|
| | | prediv2factor = ((RCC->CFGR2 & CFGR2_PREDIV2) >> 4) + 1;
|
| | | pll2mull = ((RCC->CFGR2 & CFGR2_PLL2MUL) >> 8 ) + 2; |
| | | RCC_Clocks->SYSCLK_Frequency = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull; |
| | | }
|
| | | }
|
| | | #endif /* STM32F10X_CL */ |
| | | break;
|
| | |
|
| | | default:
|
| | | RCC_Clocks->SYSCLK_Frequency = HSI_VALUE;
|
| | | break;
|
| | | }
|
| | |
|
| | | /* Compute HCLK, PCLK1, PCLK2 and ADCCLK clocks frequencies ----------------*/
|
| | | /* Get HCLK prescaler */
|
| | | tmp = RCC->CFGR & CFGR_HPRE_Set_Mask;
|
| | | tmp = tmp >> 4;
|
| | | presc = APBAHBPrescTable[tmp];
|
| | | /* HCLK clock frequency */
|
| | | RCC_Clocks->HCLK_Frequency = RCC_Clocks->SYSCLK_Frequency >> presc;
|
| | | /* Get PCLK1 prescaler */
|
| | | tmp = RCC->CFGR & CFGR_PPRE1_Set_Mask;
|
| | | tmp = tmp >> 8;
|
| | | presc = APBAHBPrescTable[tmp];
|
| | | /* PCLK1 clock frequency */
|
| | | RCC_Clocks->PCLK1_Frequency = RCC_Clocks->HCLK_Frequency >> presc;
|
| | | /* Get PCLK2 prescaler */
|
| | | tmp = RCC->CFGR & CFGR_PPRE2_Set_Mask;
|
| | | tmp = tmp >> 11;
|
| | | presc = APBAHBPrescTable[tmp];
|
| | | /* PCLK2 clock frequency */
|
| | | RCC_Clocks->PCLK2_Frequency = RCC_Clocks->HCLK_Frequency >> presc;
|
| | | /* Get ADCCLK prescaler */
|
| | | tmp = RCC->CFGR & CFGR_ADCPRE_Set_Mask;
|
| | | tmp = tmp >> 14;
|
| | | presc = ADCPrescTable[tmp];
|
| | | /* ADCCLK clock frequency */
|
| | | RCC_Clocks->ADCCLK_Frequency = RCC_Clocks->PCLK2_Frequency / presc;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the AHB peripheral clock.
|
| | | * @param RCC_AHBPeriph: specifies the AHB peripheral to gates its clock.
|
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be any combination
|
| | | * of the following values: |
| | | * @arg RCC_AHBPeriph_DMA1
|
| | | * @arg RCC_AHBPeriph_DMA2
|
| | | * @arg RCC_AHBPeriph_SRAM
|
| | | * @arg RCC_AHBPeriph_FLITF
|
| | | * @arg RCC_AHBPeriph_CRC
|
| | | * @arg RCC_AHBPeriph_OTG_FS |
| | | * @arg RCC_AHBPeriph_ETH_MAC |
| | | * @arg RCC_AHBPeriph_ETH_MAC_Tx
|
| | | * @arg RCC_AHBPeriph_ETH_MAC_Rx
|
| | | * |
| | | * For @b other_STM32_devices, this parameter can be any combination of the |
| | | * following values: |
| | | * @arg RCC_AHBPeriph_DMA1
|
| | | * @arg RCC_AHBPeriph_DMA2
|
| | | * @arg RCC_AHBPeriph_SRAM
|
| | | * @arg RCC_AHBPeriph_FLITF
|
| | | * @arg RCC_AHBPeriph_CRC
|
| | | * @arg RCC_AHBPeriph_FSMC
|
| | | * @arg RCC_AHBPeriph_SDIO
|
| | | * |
| | | * @note SRAM and FLITF clock can be disabled only during sleep mode.
|
| | | * @param NewState: new state of the specified peripheral clock.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_AHBPeriphClockCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_AHB_PERIPH(RCC_AHBPeriph));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | |
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | RCC->AHBENR |= RCC_AHBPeriph;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC->AHBENR &= ~RCC_AHBPeriph;
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the High Speed APB (APB2) peripheral clock.
|
| | | * @param RCC_APB2Periph: specifies the APB2 peripheral to gates its clock.
|
| | | * This parameter can be any combination of the following values:
|
| | | * @arg RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB,
|
| | | * RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE,
|
| | | * RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1,
|
| | | * RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1,
|
| | | * RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3,
|
| | | * RCC_APB2Periph_TIM15, RCC_APB2Periph_TIM16, RCC_APB2Periph_TIM17,
|
| | | * RCC_APB2Periph_TIM9, RCC_APB2Periph_TIM10, RCC_APB2Periph_TIM11 |
| | | * @param NewState: new state of the specified peripheral clock.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_APB2_PERIPH(RCC_APB2Periph));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | RCC->APB2ENR |= RCC_APB2Periph;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC->APB2ENR &= ~RCC_APB2Periph;
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the Low Speed APB (APB1) peripheral clock.
|
| | | * @param RCC_APB1Periph: specifies the APB1 peripheral to gates its clock.
|
| | | * This parameter can be any combination of the following values:
|
| | | * @arg RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4,
|
| | | * RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7,
|
| | | * RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3,
|
| | | * RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4, |
| | | * RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2,
|
| | | * RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP,
|
| | | * RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_CEC,
|
| | | * RCC_APB1Periph_TIM12, RCC_APB1Periph_TIM13, RCC_APB1Periph_TIM14
|
| | | * @param NewState: new state of the specified peripheral clock.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_APB1PeriphClockCmd(uint32_t RCC_APB1Periph, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_APB1_PERIPH(RCC_APB1Periph));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | RCC->APB1ENR |= RCC_APB1Periph;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC->APB1ENR &= ~RCC_APB1Periph;
|
| | | }
|
| | | }
|
| | |
|
| | | #ifdef STM32F10X_CL
|
| | | /**
|
| | | * @brief Forces or releases AHB peripheral reset.
|
| | | * @note This function applies only to STM32 Connectivity line devices.
|
| | | * @param RCC_AHBPeriph: specifies the AHB peripheral to reset.
|
| | | * This parameter can be any combination of the following values:
|
| | | * @arg RCC_AHBPeriph_OTG_FS |
| | | * @arg RCC_AHBPeriph_ETH_MAC
|
| | | * @param NewState: new state of the specified peripheral reset.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_AHBPeriphResetCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_AHB_PERIPH_RESET(RCC_AHBPeriph));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | |
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | RCC->AHBRSTR |= RCC_AHBPeriph;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC->AHBRSTR &= ~RCC_AHBPeriph;
|
| | | }
|
| | | }
|
| | | #endif /* STM32F10X_CL */ |
| | |
|
| | | /**
|
| | | * @brief Forces or releases High Speed APB (APB2) peripheral reset.
|
| | | * @param RCC_APB2Periph: specifies the APB2 peripheral to reset.
|
| | | * This parameter can be any combination of the following values:
|
| | | * @arg RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB,
|
| | | * RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE,
|
| | | * RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1,
|
| | | * RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1,
|
| | | * RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3,
|
| | | * RCC_APB2Periph_TIM15, RCC_APB2Periph_TIM16, RCC_APB2Periph_TIM17,
|
| | | * RCC_APB2Periph_TIM9, RCC_APB2Periph_TIM10, RCC_APB2Periph_TIM11 |
| | | * @param NewState: new state of the specified peripheral reset.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_APB2PeriphResetCmd(uint32_t RCC_APB2Periph, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_APB2_PERIPH(RCC_APB2Periph));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | RCC->APB2RSTR |= RCC_APB2Periph;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC->APB2RSTR &= ~RCC_APB2Periph;
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Forces or releases Low Speed APB (APB1) peripheral reset.
|
| | | * @param RCC_APB1Periph: specifies the APB1 peripheral to reset.
|
| | | * This parameter can be any combination of the following values:
|
| | | * @arg RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4,
|
| | | * RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7,
|
| | | * RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3,
|
| | | * RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4, |
| | | * RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2,
|
| | | * RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP,
|
| | | * RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_CEC,
|
| | | * RCC_APB1Periph_TIM12, RCC_APB1Periph_TIM13, RCC_APB1Periph_TIM14 |
| | | * @param NewState: new state of the specified peripheral clock.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_APB1PeriphResetCmd(uint32_t RCC_APB1Periph, FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_APB1_PERIPH(RCC_APB1Periph));
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | if (NewState != DISABLE)
|
| | | {
|
| | | RCC->APB1RSTR |= RCC_APB1Periph;
|
| | | }
|
| | | else
|
| | | {
|
| | | RCC->APB1RSTR &= ~RCC_APB1Periph;
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Forces or releases the Backup domain reset.
|
| | | * @param NewState: new state of the Backup domain reset.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_BackupResetCmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | *(__IO uint32_t *) BDCR_BDRST_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the Clock Security System.
|
| | | * @param NewState: new state of the Clock Security System..
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void RCC_ClockSecuritySystemCmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | *(__IO uint32_t *) CR_CSSON_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Selects the clock source to output on MCO pin.
|
| | | * @param RCC_MCO: specifies the clock source to output.
|
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be one of the
|
| | | * following values: |
| | | * @arg RCC_MCO_NoClock: No clock selected
|
| | | * @arg RCC_MCO_SYSCLK: System clock selected
|
| | | * @arg RCC_MCO_HSI: HSI oscillator clock selected
|
| | | * @arg RCC_MCO_HSE: HSE oscillator clock selected
|
| | | * @arg RCC_MCO_PLLCLK_Div2: PLL clock divided by 2 selected
|
| | | * @arg RCC_MCO_PLL2CLK: PLL2 clock selected |
| | | * @arg RCC_MCO_PLL3CLK_Div2: PLL3 clock divided by 2 selected |
| | | * @arg RCC_MCO_XT1: External 3-25 MHz oscillator clock selected |
| | | * @arg RCC_MCO_PLL3CLK: PLL3 clock selected |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_MCO_NoClock: No clock selected
|
| | | * @arg RCC_MCO_SYSCLK: System clock selected
|
| | | * @arg RCC_MCO_HSI: HSI oscillator clock selected
|
| | | * @arg RCC_MCO_HSE: HSE oscillator clock selected
|
| | | * @arg RCC_MCO_PLLCLK_Div2: PLL clock divided by 2 selected
|
| | | * |
| | | * @retval None
|
| | | */
|
| | | void RCC_MCOConfig(uint8_t RCC_MCO)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_MCO(RCC_MCO));
|
| | |
|
| | | /* Perform Byte access to MCO bits to select the MCO source */
|
| | | *(__IO uint8_t *) CFGR_BYTE4_ADDRESS = RCC_MCO;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Checks whether the specified RCC flag is set or not.
|
| | | * @param RCC_FLAG: specifies the flag to check.
|
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be one of the
|
| | | * following values:
|
| | | * @arg RCC_FLAG_HSIRDY: HSI oscillator clock ready
|
| | | * @arg RCC_FLAG_HSERDY: HSE oscillator clock ready
|
| | | * @arg RCC_FLAG_PLLRDY: PLL clock ready
|
| | | * @arg RCC_FLAG_PLL2RDY: PLL2 clock ready |
| | | * @arg RCC_FLAG_PLL3RDY: PLL3 clock ready |
| | | * @arg RCC_FLAG_LSERDY: LSE oscillator clock ready
|
| | | * @arg RCC_FLAG_LSIRDY: LSI oscillator clock ready
|
| | | * @arg RCC_FLAG_PINRST: Pin reset
|
| | | * @arg RCC_FLAG_PORRST: POR/PDR reset
|
| | | * @arg RCC_FLAG_SFTRST: Software reset
|
| | | * @arg RCC_FLAG_IWDGRST: Independent Watchdog reset
|
| | | * @arg RCC_FLAG_WWDGRST: Window Watchdog reset
|
| | | * @arg RCC_FLAG_LPWRRST: Low Power reset
|
| | | * |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_FLAG_HSIRDY: HSI oscillator clock ready
|
| | | * @arg RCC_FLAG_HSERDY: HSE oscillator clock ready
|
| | | * @arg RCC_FLAG_PLLRDY: PLL clock ready
|
| | | * @arg RCC_FLAG_LSERDY: LSE oscillator clock ready
|
| | | * @arg RCC_FLAG_LSIRDY: LSI oscillator clock ready
|
| | | * @arg RCC_FLAG_PINRST: Pin reset
|
| | | * @arg RCC_FLAG_PORRST: POR/PDR reset
|
| | | * @arg RCC_FLAG_SFTRST: Software reset
|
| | | * @arg RCC_FLAG_IWDGRST: Independent Watchdog reset
|
| | | * @arg RCC_FLAG_WWDGRST: Window Watchdog reset
|
| | | * @arg RCC_FLAG_LPWRRST: Low Power reset
|
| | | * |
| | | * @retval The new state of RCC_FLAG (SET or RESET).
|
| | | */
|
| | | FlagStatus RCC_GetFlagStatus(uint8_t RCC_FLAG)
|
| | | {
|
| | | uint32_t tmp = 0;
|
| | | uint32_t statusreg = 0;
|
| | | FlagStatus bitstatus = RESET;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_FLAG(RCC_FLAG));
|
| | |
|
| | | /* Get the RCC register index */
|
| | | tmp = RCC_FLAG >> 5;
|
| | | if (tmp == 1) /* The flag to check is in CR register */
|
| | | {
|
| | | statusreg = RCC->CR;
|
| | | }
|
| | | else if (tmp == 2) /* The flag to check is in BDCR register */
|
| | | {
|
| | | statusreg = RCC->BDCR;
|
| | | }
|
| | | else /* The flag to check is in CSR register */
|
| | | {
|
| | | statusreg = RCC->CSR;
|
| | | }
|
| | |
|
| | | /* Get the flag position */
|
| | | tmp = RCC_FLAG & FLAG_Mask;
|
| | | if ((statusreg & ((uint32_t)1 << tmp)) != (uint32_t)RESET)
|
| | | {
|
| | | bitstatus = SET;
|
| | | }
|
| | | else
|
| | | {
|
| | | bitstatus = RESET;
|
| | | }
|
| | |
|
| | | /* Return the flag status */
|
| | | return bitstatus;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Clears the RCC reset flags.
|
| | | * @note The reset flags are: RCC_FLAG_PINRST, RCC_FLAG_PORRST, RCC_FLAG_SFTRST,
|
| | | * RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST, RCC_FLAG_LPWRRST
|
| | | * @param None
|
| | | * @retval None
|
| | | */
|
| | | void RCC_ClearFlag(void)
|
| | | {
|
| | | /* Set RMVF bit to clear the reset flags */
|
| | | RCC->CSR |= CSR_RMVF_Set;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Checks whether the specified RCC interrupt has occurred or not.
|
| | | * @param RCC_IT: specifies the RCC interrupt source to check.
|
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be one of the
|
| | | * following values:
|
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt
|
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt
|
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt
|
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt
|
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt
|
| | | * @arg RCC_IT_PLL2RDY: PLL2 ready interrupt |
| | | * @arg RCC_IT_PLL3RDY: PLL3 ready interrupt |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt
|
| | | * |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt
|
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt
|
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt
|
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt
|
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt
|
| | | * @arg RCC_IT_CSS: Clock Security System interrupt
|
| | | * |
| | | * @retval The new state of RCC_IT (SET or RESET).
|
| | | */
|
| | | ITStatus RCC_GetITStatus(uint8_t RCC_IT)
|
| | | {
|
| | | ITStatus bitstatus = RESET;
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_GET_IT(RCC_IT));
|
| | |
|
| | | /* Check the status of the specified RCC interrupt */
|
| | | if ((RCC->CIR & RCC_IT) != (uint32_t)RESET)
|
| | | {
|
| | | bitstatus = SET;
|
| | | }
|
| | | else
|
| | | {
|
| | | bitstatus = RESET;
|
| | | }
|
| | |
|
| | | /* Return the RCC_IT status */
|
| | | return bitstatus;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Clears the RCC's interrupt pending bits.
|
| | | * @param RCC_IT: specifies the interrupt pending bit to clear.
|
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be any combination
|
| | | * of the following values:
|
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt
|
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt
|
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt
|
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt
|
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt
|
| | | * @arg RCC_IT_PLL2RDY: PLL2 ready interrupt |
| | | * @arg RCC_IT_PLL3RDY: PLL3 ready interrupt |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt
|
| | | * |
| | | * For @b other_STM32_devices, this parameter can be any combination of the
|
| | | * following values: |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt
|
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt
|
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt
|
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt
|
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt
|
| | | * |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt
|
| | | * @retval None
|
| | | */
|
| | | void RCC_ClearITPendingBit(uint8_t RCC_IT)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_RCC_CLEAR_IT(RCC_IT));
|
| | |
|
| | | /* Perform Byte access to RCC_CIR[23:16] bits to clear the selected interrupt
|
| | | pending bits */
|
| | | *(__IO uint8_t *) CIR_BYTE3_ADDRESS = RCC_IT;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
|
| | | /** |
| | | ****************************************************************************** |
| | | * @file stm32f10x_rcc.c |
| | | * @author MCD Application Team |
| | | * @version V3.5.0 |
| | | * @date 11-March-2011 |
| | | * @brief This file provides all the RCC firmware functions. |
| | | ****************************************************************************** |
| | | * @attention |
| | | * |
| | | * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
| | | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
| | | * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
| | | * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
| | | * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
| | | * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
| | | * |
| | | * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> |
| | | ****************************************************************************** |
| | | */ |
| | | |
| | | /* Includes ------------------------------------------------------------------*/ |
| | | #include "stm32f10x_rcc.h" |
| | | |
| | | /** @addtogroup STM32F10x_StdPeriph_Driver |
| | | * @{ |
| | | */ |
| | | |
| | | /** @defgroup RCC |
| | | * @brief RCC driver modules |
| | | * @{ |
| | | */ |
| | | |
| | | /** @defgroup RCC_Private_TypesDefinitions |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** @defgroup RCC_Private_Defines |
| | | * @{ |
| | | */ |
| | | |
| | | /* ------------ RCC registers bit address in the alias region ----------- */ |
| | | #define RCC_OFFSET (RCC_BASE - PERIPH_BASE) |
| | | |
| | | /* --- CR Register ---*/ |
| | | |
| | | /* Alias word address of HSION bit */ |
| | | #define CR_OFFSET (RCC_OFFSET + 0x00) |
| | | #define HSION_BitNumber 0x00 |
| | | #define CR_HSION_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (HSION_BitNumber * 4)) |
| | | |
| | | /* Alias word address of PLLON bit */ |
| | | #define PLLON_BitNumber 0x18 |
| | | #define CR_PLLON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLLON_BitNumber * 4)) |
| | | |
| | | #ifdef STM32F10X_CL |
| | | /* Alias word address of PLL2ON bit */ |
| | | #define PLL2ON_BitNumber 0x1A |
| | | #define CR_PLL2ON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLL2ON_BitNumber * 4)) |
| | | |
| | | /* Alias word address of PLL3ON bit */ |
| | | #define PLL3ON_BitNumber 0x1C |
| | | #define CR_PLL3ON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLL3ON_BitNumber * 4)) |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /* Alias word address of CSSON bit */ |
| | | #define CSSON_BitNumber 0x13 |
| | | #define CR_CSSON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (CSSON_BitNumber * 4)) |
| | | |
| | | /* --- CFGR Register ---*/ |
| | | |
| | | /* Alias word address of USBPRE bit */ |
| | | #define CFGR_OFFSET (RCC_OFFSET + 0x04) |
| | | |
| | | #ifndef STM32F10X_CL |
| | | #define USBPRE_BitNumber 0x16 |
| | | #define CFGR_USBPRE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (USBPRE_BitNumber * 4)) |
| | | #else |
| | | #define OTGFSPRE_BitNumber 0x16 |
| | | #define CFGR_OTGFSPRE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (OTGFSPRE_BitNumber * 4)) |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /* --- BDCR Register ---*/ |
| | | |
| | | /* Alias word address of RTCEN bit */ |
| | | #define BDCR_OFFSET (RCC_OFFSET + 0x20) |
| | | #define RTCEN_BitNumber 0x0F |
| | | #define BDCR_RTCEN_BB (PERIPH_BB_BASE + (BDCR_OFFSET * 32) + (RTCEN_BitNumber * 4)) |
| | | |
| | | /* Alias word address of BDRST bit */ |
| | | #define BDRST_BitNumber 0x10 |
| | | #define BDCR_BDRST_BB (PERIPH_BB_BASE + (BDCR_OFFSET * 32) + (BDRST_BitNumber * 4)) |
| | | |
| | | /* --- CSR Register ---*/ |
| | | |
| | | /* Alias word address of LSION bit */ |
| | | #define CSR_OFFSET (RCC_OFFSET + 0x24) |
| | | #define LSION_BitNumber 0x00 |
| | | #define CSR_LSION_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (LSION_BitNumber * 4)) |
| | | |
| | | #ifdef STM32F10X_CL |
| | | /* --- CFGR2 Register ---*/ |
| | | |
| | | /* Alias word address of I2S2SRC bit */ |
| | | #define CFGR2_OFFSET (RCC_OFFSET + 0x2C) |
| | | #define I2S2SRC_BitNumber 0x11 |
| | | #define CFGR2_I2S2SRC_BB (PERIPH_BB_BASE + (CFGR2_OFFSET * 32) + (I2S2SRC_BitNumber * 4)) |
| | | |
| | | /* Alias word address of I2S3SRC bit */ |
| | | #define I2S3SRC_BitNumber 0x12 |
| | | #define CFGR2_I2S3SRC_BB (PERIPH_BB_BASE + (CFGR2_OFFSET * 32) + (I2S3SRC_BitNumber * 4)) |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /* ---------------------- RCC registers bit mask ------------------------ */ |
| | | |
| | | /* CR register bit mask */ |
| | | #define CR_HSEBYP_Reset ((uint32_t)0xFFFBFFFF) |
| | | #define CR_HSEBYP_Set ((uint32_t)0x00040000) |
| | | #define CR_HSEON_Reset ((uint32_t)0xFFFEFFFF) |
| | | #define CR_HSEON_Set ((uint32_t)0x00010000) |
| | | #define CR_HSITRIM_Mask ((uint32_t)0xFFFFFF07) |
| | | |
| | | /* CFGR register bit mask */ |
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) || defined (STM32F10X_CL) |
| | | #define CFGR_PLL_Mask ((uint32_t)0xFFC2FFFF) |
| | | #else |
| | | #define CFGR_PLL_Mask ((uint32_t)0xFFC0FFFF) |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | #define CFGR_PLLMull_Mask ((uint32_t)0x003C0000) |
| | | #define CFGR_PLLSRC_Mask ((uint32_t)0x00010000) |
| | | #define CFGR_PLLXTPRE_Mask ((uint32_t)0x00020000) |
| | | #define CFGR_SWS_Mask ((uint32_t)0x0000000C) |
| | | #define CFGR_SW_Mask ((uint32_t)0xFFFFFFFC) |
| | | #define CFGR_HPRE_Reset_Mask ((uint32_t)0xFFFFFF0F) |
| | | #define CFGR_HPRE_Set_Mask ((uint32_t)0x000000F0) |
| | | #define CFGR_PPRE1_Reset_Mask ((uint32_t)0xFFFFF8FF) |
| | | #define CFGR_PPRE1_Set_Mask ((uint32_t)0x00000700) |
| | | #define CFGR_PPRE2_Reset_Mask ((uint32_t)0xFFFFC7FF) |
| | | #define CFGR_PPRE2_Set_Mask ((uint32_t)0x00003800) |
| | | #define CFGR_ADCPRE_Reset_Mask ((uint32_t)0xFFFF3FFF) |
| | | #define CFGR_ADCPRE_Set_Mask ((uint32_t)0x0000C000) |
| | | |
| | | /* CSR register bit mask */ |
| | | #define CSR_RMVF_Set ((uint32_t)0x01000000) |
| | | |
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) || defined (STM32F10X_CL) |
| | | /* CFGR2 register bit mask */ |
| | | #define CFGR2_PREDIV1SRC ((uint32_t)0x00010000) |
| | | #define CFGR2_PREDIV1 ((uint32_t)0x0000000F) |
| | | #endif |
| | | #ifdef STM32F10X_CL |
| | | #define CFGR2_PREDIV2 ((uint32_t)0x000000F0) |
| | | #define CFGR2_PLL2MUL ((uint32_t)0x00000F00) |
| | | #define CFGR2_PLL3MUL ((uint32_t)0x0000F000) |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /* RCC Flag Mask */ |
| | | #define FLAG_Mask ((uint8_t)0x1F) |
| | | |
| | | /* CIR register byte 2 (Bits[15:8]) base address */ |
| | | #define CIR_BYTE2_ADDRESS ((uint32_t)0x40021009) |
| | | |
| | | /* CIR register byte 3 (Bits[23:16]) base address */ |
| | | #define CIR_BYTE3_ADDRESS ((uint32_t)0x4002100A) |
| | | |
| | | /* CFGR register byte 4 (Bits[31:24]) base address */ |
| | | #define CFGR_BYTE4_ADDRESS ((uint32_t)0x40021007) |
| | | |
| | | /* BDCR register base address */ |
| | | #define BDCR_ADDRESS (PERIPH_BASE + BDCR_OFFSET) |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** @defgroup RCC_Private_Macros |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** @defgroup RCC_Private_Variables |
| | | * @{ |
| | | */ |
| | | |
| | | static __I uint8_t APBAHBPrescTable[16] = {0, 0, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 6, 7, 8, 9}; |
| | | static __I uint8_t ADCPrescTable[4] = {2, 4, 6, 8}; |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** @defgroup RCC_Private_FunctionPrototypes |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** @defgroup RCC_Private_Functions |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @brief Resets the RCC clock configuration to the default reset state. |
| | | * @param None |
| | | * @retval None |
| | | */ |
| | | void RCC_DeInit(void) |
| | | { |
| | | /* Set HSION bit */ |
| | | RCC->CR |= (uint32_t)0x00000001; |
| | | |
| | | /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */ |
| | | #ifndef STM32F10X_CL |
| | | RCC->CFGR &= (uint32_t)0xF8FF0000; |
| | | #else |
| | | RCC->CFGR &= (uint32_t)0xF0FF0000; |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /* Reset HSEON, CSSON and PLLON bits */ |
| | | RCC->CR &= (uint32_t)0xFEF6FFFF; |
| | | |
| | | /* Reset HSEBYP bit */ |
| | | RCC->CR &= (uint32_t)0xFFFBFFFF; |
| | | |
| | | /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */ |
| | | RCC->CFGR &= (uint32_t)0xFF80FFFF; |
| | | |
| | | #ifdef STM32F10X_CL |
| | | /* Reset PLL2ON and PLL3ON bits */ |
| | | RCC->CR &= (uint32_t)0xEBFFFFFF; |
| | | |
| | | /* Disable all interrupts and clear pending bits */ |
| | | RCC->CIR = 0x00FF0000; |
| | | |
| | | /* Reset CFGR2 register */ |
| | | RCC->CFGR2 = 0x00000000; |
| | | #elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) |
| | | /* Disable all interrupts and clear pending bits */ |
| | | RCC->CIR = 0x009F0000; |
| | | |
| | | /* Reset CFGR2 register */ |
| | | RCC->CFGR2 = 0x00000000; |
| | | #else |
| | | /* Disable all interrupts and clear pending bits */ |
| | | RCC->CIR = 0x009F0000; |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the External High Speed oscillator (HSE). |
| | | * @note HSE can not be stopped if it is used directly or through the PLL as system clock. |
| | | * @param RCC_HSE: specifies the new state of the HSE. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_HSE_OFF: HSE oscillator OFF |
| | | * @arg RCC_HSE_ON: HSE oscillator ON |
| | | * @arg RCC_HSE_Bypass: HSE oscillator bypassed with external clock |
| | | * @retval None |
| | | */ |
| | | void RCC_HSEConfig(uint32_t RCC_HSE) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_HSE(RCC_HSE)); |
| | | /* Reset HSEON and HSEBYP bits before configuring the HSE ------------------*/ |
| | | /* Reset HSEON bit */ |
| | | RCC->CR &= CR_HSEON_Reset; |
| | | /* Reset HSEBYP bit */ |
| | | RCC->CR &= CR_HSEBYP_Reset; |
| | | /* Configure HSE (RCC_HSE_OFF is already covered by the code section above) */ |
| | | switch(RCC_HSE) |
| | | { |
| | | case RCC_HSE_ON: |
| | | /* Set HSEON bit */ |
| | | RCC->CR |= CR_HSEON_Set; |
| | | break; |
| | | |
| | | case RCC_HSE_Bypass: |
| | | /* Set HSEBYP and HSEON bits */ |
| | | RCC->CR |= CR_HSEBYP_Set | CR_HSEON_Set; |
| | | break; |
| | | |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Waits for HSE start-up. |
| | | * @param None |
| | | * @retval An ErrorStatus enumuration value: |
| | | * - SUCCESS: HSE oscillator is stable and ready to use |
| | | * - ERROR: HSE oscillator not yet ready |
| | | */ |
| | | ErrorStatus RCC_WaitForHSEStartUp(void) |
| | | { |
| | | __IO uint32_t StartUpCounter = 0; |
| | | ErrorStatus status = ERROR; |
| | | FlagStatus HSEStatus = RESET; |
| | | |
| | | /* Wait till HSE is ready and if Time out is reached exit */ |
| | | do |
| | | { |
| | | HSEStatus = RCC_GetFlagStatus(RCC_FLAG_HSERDY); |
| | | StartUpCounter++; |
| | | } while((StartUpCounter != HSE_STARTUP_TIMEOUT) && (HSEStatus == RESET)); |
| | | |
| | | if (RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET) |
| | | { |
| | | status = SUCCESS; |
| | | } |
| | | else |
| | | { |
| | | status = ERROR; |
| | | } |
| | | return (status); |
| | | } |
| | | |
| | | /** |
| | | * @brief Adjusts the Internal High Speed oscillator (HSI) calibration value. |
| | | * @param HSICalibrationValue: specifies the calibration trimming value. |
| | | * This parameter must be a number between 0 and 0x1F. |
| | | * @retval None |
| | | */ |
| | | void RCC_AdjustHSICalibrationValue(uint8_t HSICalibrationValue) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_CALIBRATION_VALUE(HSICalibrationValue)); |
| | | tmpreg = RCC->CR; |
| | | /* Clear HSITRIM[4:0] bits */ |
| | | tmpreg &= CR_HSITRIM_Mask; |
| | | /* Set the HSITRIM[4:0] bits according to HSICalibrationValue value */ |
| | | tmpreg |= (uint32_t)HSICalibrationValue << 3; |
| | | /* Store the new value */ |
| | | RCC->CR = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the Internal High Speed oscillator (HSI). |
| | | * @note HSI can not be stopped if it is used directly or through the PLL as system clock. |
| | | * @param NewState: new state of the HSI. This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_HSICmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | *(__IO uint32_t *) CR_HSION_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the PLL clock source and multiplication factor. |
| | | * @note This function must be used only when the PLL is disabled. |
| | | * @param RCC_PLLSource: specifies the PLL entry clock source. |
| | | * For @b STM32_Connectivity_line_devices or @b STM32_Value_line_devices, |
| | | * this parameter can be one of the following values: |
| | | * @arg RCC_PLLSource_HSI_Div2: HSI oscillator clock divided by 2 selected as PLL clock entry |
| | | * @arg RCC_PLLSource_PREDIV1: PREDIV1 clock selected as PLL clock entry |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_PLLSource_HSI_Div2: HSI oscillator clock divided by 2 selected as PLL clock entry |
| | | * @arg RCC_PLLSource_HSE_Div1: HSE oscillator clock selected as PLL clock entry |
| | | * @arg RCC_PLLSource_HSE_Div2: HSE oscillator clock divided by 2 selected as PLL clock entry |
| | | * @param RCC_PLLMul: specifies the PLL multiplication factor. |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be RCC_PLLMul_x where x:{[4,9], 6_5} |
| | | * For @b other_STM32_devices, this parameter can be RCC_PLLMul_x where x:[2,16] |
| | | * @retval None |
| | | */ |
| | | void RCC_PLLConfig(uint32_t RCC_PLLSource, uint32_t RCC_PLLMul) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PLL_SOURCE(RCC_PLLSource)); |
| | | assert_param(IS_RCC_PLL_MUL(RCC_PLLMul)); |
| | | |
| | | tmpreg = RCC->CFGR; |
| | | /* Clear PLLSRC, PLLXTPRE and PLLMUL[3:0] bits */ |
| | | tmpreg &= CFGR_PLL_Mask; |
| | | /* Set the PLL configuration bits */ |
| | | tmpreg |= RCC_PLLSource | RCC_PLLMul; |
| | | /* Store the new value */ |
| | | RCC->CFGR = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the PLL. |
| | | * @note The PLL can not be disabled if it is used as system clock. |
| | | * @param NewState: new state of the PLL. This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_PLLCmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | *(__IO uint32_t *) CR_PLLON_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) || defined (STM32F10X_CL) |
| | | /** |
| | | * @brief Configures the PREDIV1 division factor. |
| | | * @note |
| | | * - This function must be used only when the PLL is disabled. |
| | | * - This function applies only to STM32 Connectivity line and Value line |
| | | * devices. |
| | | * @param RCC_PREDIV1_Source: specifies the PREDIV1 clock source. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_PREDIV1_Source_HSE: HSE selected as PREDIV1 clock |
| | | * @arg RCC_PREDIV1_Source_PLL2: PLL2 selected as PREDIV1 clock |
| | | * @note |
| | | * For @b STM32_Value_line_devices this parameter is always RCC_PREDIV1_Source_HSE |
| | | * @param RCC_PREDIV1_Div: specifies the PREDIV1 clock division factor. |
| | | * This parameter can be RCC_PREDIV1_Divx where x:[1,16] |
| | | * @retval None |
| | | */ |
| | | void RCC_PREDIV1Config(uint32_t RCC_PREDIV1_Source, uint32_t RCC_PREDIV1_Div) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PREDIV1_SOURCE(RCC_PREDIV1_Source)); |
| | | assert_param(IS_RCC_PREDIV1(RCC_PREDIV1_Div)); |
| | | |
| | | tmpreg = RCC->CFGR2; |
| | | /* Clear PREDIV1[3:0] and PREDIV1SRC bits */ |
| | | tmpreg &= ~(CFGR2_PREDIV1 | CFGR2_PREDIV1SRC); |
| | | /* Set the PREDIV1 clock source and division factor */ |
| | | tmpreg |= RCC_PREDIV1_Source | RCC_PREDIV1_Div ; |
| | | /* Store the new value */ |
| | | RCC->CFGR2 = tmpreg; |
| | | } |
| | | #endif |
| | | |
| | | #ifdef STM32F10X_CL |
| | | /** |
| | | * @brief Configures the PREDIV2 division factor. |
| | | * @note |
| | | * - This function must be used only when both PLL2 and PLL3 are disabled. |
| | | * - This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_PREDIV2_Div: specifies the PREDIV2 clock division factor. |
| | | * This parameter can be RCC_PREDIV2_Divx where x:[1,16] |
| | | * @retval None |
| | | */ |
| | | void RCC_PREDIV2Config(uint32_t RCC_PREDIV2_Div) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PREDIV2(RCC_PREDIV2_Div)); |
| | | |
| | | tmpreg = RCC->CFGR2; |
| | | /* Clear PREDIV2[3:0] bits */ |
| | | tmpreg &= ~CFGR2_PREDIV2; |
| | | /* Set the PREDIV2 division factor */ |
| | | tmpreg |= RCC_PREDIV2_Div; |
| | | /* Store the new value */ |
| | | RCC->CFGR2 = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the PLL2 multiplication factor. |
| | | * @note |
| | | * - This function must be used only when the PLL2 is disabled. |
| | | * - This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_PLL2Mul: specifies the PLL2 multiplication factor. |
| | | * This parameter can be RCC_PLL2Mul_x where x:{[8,14], 16, 20} |
| | | * @retval None |
| | | */ |
| | | void RCC_PLL2Config(uint32_t RCC_PLL2Mul) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PLL2_MUL(RCC_PLL2Mul)); |
| | | |
| | | tmpreg = RCC->CFGR2; |
| | | /* Clear PLL2Mul[3:0] bits */ |
| | | tmpreg &= ~CFGR2_PLL2MUL; |
| | | /* Set the PLL2 configuration bits */ |
| | | tmpreg |= RCC_PLL2Mul; |
| | | /* Store the new value */ |
| | | RCC->CFGR2 = tmpreg; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * @brief Enables or disables the PLL2. |
| | | * @note |
| | | * - The PLL2 can not be disabled if it is used indirectly as system clock |
| | | * (i.e. it is used as PLL clock entry that is used as System clock). |
| | | * - This function applies only to STM32 Connectivity line devices. |
| | | * @param NewState: new state of the PLL2. This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_PLL2Cmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | *(__IO uint32_t *) CR_PLL2ON_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * @brief Configures the PLL3 multiplication factor. |
| | | * @note |
| | | * - This function must be used only when the PLL3 is disabled. |
| | | * - This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_PLL3Mul: specifies the PLL3 multiplication factor. |
| | | * This parameter can be RCC_PLL3Mul_x where x:{[8,14], 16, 20} |
| | | * @retval None |
| | | */ |
| | | void RCC_PLL3Config(uint32_t RCC_PLL3Mul) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PLL3_MUL(RCC_PLL3Mul)); |
| | | |
| | | tmpreg = RCC->CFGR2; |
| | | /* Clear PLL3Mul[3:0] bits */ |
| | | tmpreg &= ~CFGR2_PLL3MUL; |
| | | /* Set the PLL3 configuration bits */ |
| | | tmpreg |= RCC_PLL3Mul; |
| | | /* Store the new value */ |
| | | RCC->CFGR2 = tmpreg; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * @brief Enables or disables the PLL3. |
| | | * @note This function applies only to STM32 Connectivity line devices. |
| | | * @param NewState: new state of the PLL3. This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_PLL3Cmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | *(__IO uint32_t *) CR_PLL3ON_BB = (uint32_t)NewState; |
| | | } |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /** |
| | | * @brief Configures the system clock (SYSCLK). |
| | | * @param RCC_SYSCLKSource: specifies the clock source used as system clock. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_SYSCLKSource_HSI: HSI selected as system clock |
| | | * @arg RCC_SYSCLKSource_HSE: HSE selected as system clock |
| | | * @arg RCC_SYSCLKSource_PLLCLK: PLL selected as system clock |
| | | * @retval None |
| | | */ |
| | | void RCC_SYSCLKConfig(uint32_t RCC_SYSCLKSource) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_SYSCLK_SOURCE(RCC_SYSCLKSource)); |
| | | tmpreg = RCC->CFGR; |
| | | /* Clear SW[1:0] bits */ |
| | | tmpreg &= CFGR_SW_Mask; |
| | | /* Set SW[1:0] bits according to RCC_SYSCLKSource value */ |
| | | tmpreg |= RCC_SYSCLKSource; |
| | | /* Store the new value */ |
| | | RCC->CFGR = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Returns the clock source used as system clock. |
| | | * @param None |
| | | * @retval The clock source used as system clock. The returned value can |
| | | * be one of the following: |
| | | * - 0x00: HSI used as system clock |
| | | * - 0x04: HSE used as system clock |
| | | * - 0x08: PLL used as system clock |
| | | */ |
| | | uint8_t RCC_GetSYSCLKSource(void) |
| | | { |
| | | return ((uint8_t)(RCC->CFGR & CFGR_SWS_Mask)); |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the AHB clock (HCLK). |
| | | * @param RCC_SYSCLK: defines the AHB clock divider. This clock is derived from |
| | | * the system clock (SYSCLK). |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_SYSCLK_Div1: AHB clock = SYSCLK |
| | | * @arg RCC_SYSCLK_Div2: AHB clock = SYSCLK/2 |
| | | * @arg RCC_SYSCLK_Div4: AHB clock = SYSCLK/4 |
| | | * @arg RCC_SYSCLK_Div8: AHB clock = SYSCLK/8 |
| | | * @arg RCC_SYSCLK_Div16: AHB clock = SYSCLK/16 |
| | | * @arg RCC_SYSCLK_Div64: AHB clock = SYSCLK/64 |
| | | * @arg RCC_SYSCLK_Div128: AHB clock = SYSCLK/128 |
| | | * @arg RCC_SYSCLK_Div256: AHB clock = SYSCLK/256 |
| | | * @arg RCC_SYSCLK_Div512: AHB clock = SYSCLK/512 |
| | | * @retval None |
| | | */ |
| | | void RCC_HCLKConfig(uint32_t RCC_SYSCLK) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_HCLK(RCC_SYSCLK)); |
| | | tmpreg = RCC->CFGR; |
| | | /* Clear HPRE[3:0] bits */ |
| | | tmpreg &= CFGR_HPRE_Reset_Mask; |
| | | /* Set HPRE[3:0] bits according to RCC_SYSCLK value */ |
| | | tmpreg |= RCC_SYSCLK; |
| | | /* Store the new value */ |
| | | RCC->CFGR = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the Low Speed APB clock (PCLK1). |
| | | * @param RCC_HCLK: defines the APB1 clock divider. This clock is derived from |
| | | * the AHB clock (HCLK). |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_HCLK_Div1: APB1 clock = HCLK |
| | | * @arg RCC_HCLK_Div2: APB1 clock = HCLK/2 |
| | | * @arg RCC_HCLK_Div4: APB1 clock = HCLK/4 |
| | | * @arg RCC_HCLK_Div8: APB1 clock = HCLK/8 |
| | | * @arg RCC_HCLK_Div16: APB1 clock = HCLK/16 |
| | | * @retval None |
| | | */ |
| | | void RCC_PCLK1Config(uint32_t RCC_HCLK) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PCLK(RCC_HCLK)); |
| | | tmpreg = RCC->CFGR; |
| | | /* Clear PPRE1[2:0] bits */ |
| | | tmpreg &= CFGR_PPRE1_Reset_Mask; |
| | | /* Set PPRE1[2:0] bits according to RCC_HCLK value */ |
| | | tmpreg |= RCC_HCLK; |
| | | /* Store the new value */ |
| | | RCC->CFGR = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the High Speed APB clock (PCLK2). |
| | | * @param RCC_HCLK: defines the APB2 clock divider. This clock is derived from |
| | | * the AHB clock (HCLK). |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_HCLK_Div1: APB2 clock = HCLK |
| | | * @arg RCC_HCLK_Div2: APB2 clock = HCLK/2 |
| | | * @arg RCC_HCLK_Div4: APB2 clock = HCLK/4 |
| | | * @arg RCC_HCLK_Div8: APB2 clock = HCLK/8 |
| | | * @arg RCC_HCLK_Div16: APB2 clock = HCLK/16 |
| | | * @retval None |
| | | */ |
| | | void RCC_PCLK2Config(uint32_t RCC_HCLK) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_PCLK(RCC_HCLK)); |
| | | tmpreg = RCC->CFGR; |
| | | /* Clear PPRE2[2:0] bits */ |
| | | tmpreg &= CFGR_PPRE2_Reset_Mask; |
| | | /* Set PPRE2[2:0] bits according to RCC_HCLK value */ |
| | | tmpreg |= RCC_HCLK << 3; |
| | | /* Store the new value */ |
| | | RCC->CFGR = tmpreg; |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the specified RCC interrupts. |
| | | * @param RCC_IT: specifies the RCC interrupt sources to be enabled or disabled. |
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be any combination |
| | | * of the following values |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt |
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt |
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt |
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt |
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt |
| | | * @arg RCC_IT_PLL2RDY: PLL2 ready interrupt |
| | | * @arg RCC_IT_PLL3RDY: PLL3 ready interrupt |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be any combination of the |
| | | * following values |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt |
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt |
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt |
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt |
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt |
| | | * |
| | | * @param NewState: new state of the specified RCC interrupts. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_ITConfig(uint8_t RCC_IT, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_IT(RCC_IT)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | if (NewState != DISABLE) |
| | | { |
| | | /* Perform Byte access to RCC_CIR bits to enable the selected interrupts */ |
| | | *(__IO uint8_t *) CIR_BYTE2_ADDRESS |= RCC_IT; |
| | | } |
| | | else |
| | | { |
| | | /* Perform Byte access to RCC_CIR bits to disable the selected interrupts */ |
| | | *(__IO uint8_t *) CIR_BYTE2_ADDRESS &= (uint8_t)~RCC_IT; |
| | | } |
| | | } |
| | | |
| | | #ifndef STM32F10X_CL |
| | | /** |
| | | * @brief Configures the USB clock (USBCLK). |
| | | * @param RCC_USBCLKSource: specifies the USB clock source. This clock is |
| | | * derived from the PLL output. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_USBCLKSource_PLLCLK_1Div5: PLL clock divided by 1,5 selected as USB |
| | | * clock source |
| | | * @arg RCC_USBCLKSource_PLLCLK_Div1: PLL clock selected as USB clock source |
| | | * @retval None |
| | | */ |
| | | void RCC_USBCLKConfig(uint32_t RCC_USBCLKSource) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_USBCLK_SOURCE(RCC_USBCLKSource)); |
| | | |
| | | *(__IO uint32_t *) CFGR_USBPRE_BB = RCC_USBCLKSource; |
| | | } |
| | | #else |
| | | /** |
| | | * @brief Configures the USB OTG FS clock (OTGFSCLK). |
| | | * This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_OTGFSCLKSource: specifies the USB OTG FS clock source. |
| | | * This clock is derived from the PLL output. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_OTGFSCLKSource_PLLVCO_Div3: PLL VCO clock divided by 2 selected as USB OTG FS clock source |
| | | * @arg RCC_OTGFSCLKSource_PLLVCO_Div2: PLL VCO clock divided by 2 selected as USB OTG FS clock source |
| | | * @retval None |
| | | */ |
| | | void RCC_OTGFSCLKConfig(uint32_t RCC_OTGFSCLKSource) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_OTGFSCLK_SOURCE(RCC_OTGFSCLKSource)); |
| | | |
| | | *(__IO uint32_t *) CFGR_OTGFSPRE_BB = RCC_OTGFSCLKSource; |
| | | } |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /** |
| | | * @brief Configures the ADC clock (ADCCLK). |
| | | * @param RCC_PCLK2: defines the ADC clock divider. This clock is derived from |
| | | * the APB2 clock (PCLK2). |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_PCLK2_Div2: ADC clock = PCLK2/2 |
| | | * @arg RCC_PCLK2_Div4: ADC clock = PCLK2/4 |
| | | * @arg RCC_PCLK2_Div6: ADC clock = PCLK2/6 |
| | | * @arg RCC_PCLK2_Div8: ADC clock = PCLK2/8 |
| | | * @retval None |
| | | */ |
| | | void RCC_ADCCLKConfig(uint32_t RCC_PCLK2) |
| | | { |
| | | uint32_t tmpreg = 0; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_ADCCLK(RCC_PCLK2)); |
| | | tmpreg = RCC->CFGR; |
| | | /* Clear ADCPRE[1:0] bits */ |
| | | tmpreg &= CFGR_ADCPRE_Reset_Mask; |
| | | /* Set ADCPRE[1:0] bits according to RCC_PCLK2 value */ |
| | | tmpreg |= RCC_PCLK2; |
| | | /* Store the new value */ |
| | | RCC->CFGR = tmpreg; |
| | | } |
| | | |
| | | #ifdef STM32F10X_CL |
| | | /** |
| | | * @brief Configures the I2S2 clock source(I2S2CLK). |
| | | * @note |
| | | * - This function must be called before enabling I2S2 APB clock. |
| | | * - This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_I2S2CLKSource: specifies the I2S2 clock source. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_I2S2CLKSource_SYSCLK: system clock selected as I2S2 clock entry |
| | | * @arg RCC_I2S2CLKSource_PLL3_VCO: PLL3 VCO clock selected as I2S2 clock entry |
| | | * @retval None |
| | | */ |
| | | void RCC_I2S2CLKConfig(uint32_t RCC_I2S2CLKSource) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_I2S2CLK_SOURCE(RCC_I2S2CLKSource)); |
| | | |
| | | *(__IO uint32_t *) CFGR2_I2S2SRC_BB = RCC_I2S2CLKSource; |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the I2S3 clock source(I2S2CLK). |
| | | * @note |
| | | * - This function must be called before enabling I2S3 APB clock. |
| | | * - This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_I2S3CLKSource: specifies the I2S3 clock source. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_I2S3CLKSource_SYSCLK: system clock selected as I2S3 clock entry |
| | | * @arg RCC_I2S3CLKSource_PLL3_VCO: PLL3 VCO clock selected as I2S3 clock entry |
| | | * @retval None |
| | | */ |
| | | void RCC_I2S3CLKConfig(uint32_t RCC_I2S3CLKSource) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_I2S3CLK_SOURCE(RCC_I2S3CLKSource)); |
| | | |
| | | *(__IO uint32_t *) CFGR2_I2S3SRC_BB = RCC_I2S3CLKSource; |
| | | } |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /** |
| | | * @brief Configures the External Low Speed oscillator (LSE). |
| | | * @param RCC_LSE: specifies the new state of the LSE. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_LSE_OFF: LSE oscillator OFF |
| | | * @arg RCC_LSE_ON: LSE oscillator ON |
| | | * @arg RCC_LSE_Bypass: LSE oscillator bypassed with external clock |
| | | * @retval None |
| | | */ |
| | | void RCC_LSEConfig(uint8_t RCC_LSE) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_LSE(RCC_LSE)); |
| | | /* Reset LSEON and LSEBYP bits before configuring the LSE ------------------*/ |
| | | /* Reset LSEON bit */ |
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_OFF; |
| | | /* Reset LSEBYP bit */ |
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_OFF; |
| | | /* Configure LSE (RCC_LSE_OFF is already covered by the code section above) */ |
| | | switch(RCC_LSE) |
| | | { |
| | | case RCC_LSE_ON: |
| | | /* Set LSEON bit */ |
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_ON; |
| | | break; |
| | | |
| | | case RCC_LSE_Bypass: |
| | | /* Set LSEBYP and LSEON bits */ |
| | | *(__IO uint8_t *) BDCR_ADDRESS = RCC_LSE_Bypass | RCC_LSE_ON; |
| | | break; |
| | | |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the Internal Low Speed oscillator (LSI). |
| | | * @note LSI can not be disabled if the IWDG is running. |
| | | * @param NewState: new state of the LSI. This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_LSICmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | *(__IO uint32_t *) CSR_LSION_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Configures the RTC clock (RTCCLK). |
| | | * @note Once the RTC clock is selected it can't be changed unless the Backup domain is reset. |
| | | * @param RCC_RTCCLKSource: specifies the RTC clock source. |
| | | * This parameter can be one of the following values: |
| | | * @arg RCC_RTCCLKSource_LSE: LSE selected as RTC clock |
| | | * @arg RCC_RTCCLKSource_LSI: LSI selected as RTC clock |
| | | * @arg RCC_RTCCLKSource_HSE_Div128: HSE clock divided by 128 selected as RTC clock |
| | | * @retval None |
| | | */ |
| | | void RCC_RTCCLKConfig(uint32_t RCC_RTCCLKSource) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_RTCCLK_SOURCE(RCC_RTCCLKSource)); |
| | | /* Select the RTC clock source */ |
| | | RCC->BDCR |= RCC_RTCCLKSource; |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the RTC clock. |
| | | * @note This function must be used only after the RTC clock was selected using the RCC_RTCCLKConfig function. |
| | | * @param NewState: new state of the RTC clock. This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_RTCCLKCmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | *(__IO uint32_t *) BDCR_RTCEN_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Returns the frequencies of different on chip clocks. |
| | | * @param RCC_Clocks: pointer to a RCC_ClocksTypeDef structure which will hold |
| | | * the clocks frequencies. |
| | | * @note The result of this function could be not correct when using |
| | | * fractional value for HSE crystal. |
| | | * @retval None |
| | | */ |
| | | void RCC_GetClocksFreq(RCC_ClocksTypeDef* RCC_Clocks) |
| | | { |
| | | uint32_t tmp = 0, pllmull = 0, pllsource = 0, presc = 0; |
| | | |
| | | #ifdef STM32F10X_CL |
| | | uint32_t prediv1source = 0, prediv1factor = 0, prediv2factor = 0, pll2mull = 0; |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) |
| | | uint32_t prediv1factor = 0; |
| | | #endif |
| | | |
| | | /* Get SYSCLK source -------------------------------------------------------*/ |
| | | tmp = RCC->CFGR & CFGR_SWS_Mask; |
| | | |
| | | switch (tmp) |
| | | { |
| | | case 0x00: /* HSI used as system clock */ |
| | | RCC_Clocks->SYSCLK_Frequency = HSI_VALUE; |
| | | break; |
| | | case 0x04: /* HSE used as system clock */ |
| | | RCC_Clocks->SYSCLK_Frequency = HSE_VALUE; |
| | | break; |
| | | case 0x08: /* PLL used as system clock */ |
| | | |
| | | /* Get PLL clock source and multiplication factor ----------------------*/ |
| | | pllmull = RCC->CFGR & CFGR_PLLMull_Mask; |
| | | pllsource = RCC->CFGR & CFGR_PLLSRC_Mask; |
| | | |
| | | #ifndef STM32F10X_CL |
| | | pllmull = ( pllmull >> 18) + 2; |
| | | |
| | | if (pllsource == 0x00) |
| | | {/* HSI oscillator clock divided by 2 selected as PLL clock entry */ |
| | | RCC_Clocks->SYSCLK_Frequency = (HSI_VALUE >> 1) * pllmull; |
| | | } |
| | | else |
| | | { |
| | | #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) |
| | | prediv1factor = (RCC->CFGR2 & CFGR2_PREDIV1) + 1; |
| | | /* HSE oscillator clock selected as PREDIV1 clock entry */ |
| | | RCC_Clocks->SYSCLK_Frequency = (HSE_VALUE / prediv1factor) * pllmull; |
| | | #else |
| | | /* HSE selected as PLL clock entry */ |
| | | if ((RCC->CFGR & CFGR_PLLXTPRE_Mask) != (uint32_t)RESET) |
| | | {/* HSE oscillator clock divided by 2 */ |
| | | RCC_Clocks->SYSCLK_Frequency = (HSE_VALUE >> 1) * pllmull; |
| | | } |
| | | else |
| | | { |
| | | RCC_Clocks->SYSCLK_Frequency = HSE_VALUE * pllmull; |
| | | } |
| | | #endif |
| | | } |
| | | #else |
| | | pllmull = pllmull >> 18; |
| | | |
| | | if (pllmull != 0x0D) |
| | | { |
| | | pllmull += 2; |
| | | } |
| | | else |
| | | { /* PLL multiplication factor = PLL input clock * 6.5 */ |
| | | pllmull = 13 / 2; |
| | | } |
| | | |
| | | if (pllsource == 0x00) |
| | | {/* HSI oscillator clock divided by 2 selected as PLL clock entry */ |
| | | RCC_Clocks->SYSCLK_Frequency = (HSI_VALUE >> 1) * pllmull; |
| | | } |
| | | else |
| | | {/* PREDIV1 selected as PLL clock entry */ |
| | | |
| | | /* Get PREDIV1 clock source and division factor */ |
| | | prediv1source = RCC->CFGR2 & CFGR2_PREDIV1SRC; |
| | | prediv1factor = (RCC->CFGR2 & CFGR2_PREDIV1) + 1; |
| | | |
| | | if (prediv1source == 0) |
| | | { /* HSE oscillator clock selected as PREDIV1 clock entry */ |
| | | RCC_Clocks->SYSCLK_Frequency = (HSE_VALUE / prediv1factor) * pllmull; |
| | | } |
| | | else |
| | | {/* PLL2 clock selected as PREDIV1 clock entry */ |
| | | |
| | | /* Get PREDIV2 division factor and PLL2 multiplication factor */ |
| | | prediv2factor = ((RCC->CFGR2 & CFGR2_PREDIV2) >> 4) + 1; |
| | | pll2mull = ((RCC->CFGR2 & CFGR2_PLL2MUL) >> 8 ) + 2; |
| | | RCC_Clocks->SYSCLK_Frequency = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull; |
| | | } |
| | | } |
| | | #endif /* STM32F10X_CL */ |
| | | break; |
| | | |
| | | default: |
| | | RCC_Clocks->SYSCLK_Frequency = HSI_VALUE; |
| | | break; |
| | | } |
| | | |
| | | /* Compute HCLK, PCLK1, PCLK2 and ADCCLK clocks frequencies ----------------*/ |
| | | /* Get HCLK prescaler */ |
| | | tmp = RCC->CFGR & CFGR_HPRE_Set_Mask; |
| | | tmp = tmp >> 4; |
| | | presc = APBAHBPrescTable[tmp]; |
| | | /* HCLK clock frequency */ |
| | | RCC_Clocks->HCLK_Frequency = RCC_Clocks->SYSCLK_Frequency >> presc; |
| | | /* Get PCLK1 prescaler */ |
| | | tmp = RCC->CFGR & CFGR_PPRE1_Set_Mask; |
| | | tmp = tmp >> 8; |
| | | presc = APBAHBPrescTable[tmp]; |
| | | /* PCLK1 clock frequency */ |
| | | RCC_Clocks->PCLK1_Frequency = RCC_Clocks->HCLK_Frequency >> presc; |
| | | /* Get PCLK2 prescaler */ |
| | | tmp = RCC->CFGR & CFGR_PPRE2_Set_Mask; |
| | | tmp = tmp >> 11; |
| | | presc = APBAHBPrescTable[tmp]; |
| | | /* PCLK2 clock frequency */ |
| | | RCC_Clocks->PCLK2_Frequency = RCC_Clocks->HCLK_Frequency >> presc; |
| | | /* Get ADCCLK prescaler */ |
| | | tmp = RCC->CFGR & CFGR_ADCPRE_Set_Mask; |
| | | tmp = tmp >> 14; |
| | | presc = ADCPrescTable[tmp]; |
| | | /* ADCCLK clock frequency */ |
| | | RCC_Clocks->ADCCLK_Frequency = RCC_Clocks->PCLK2_Frequency / presc; |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the AHB peripheral clock. |
| | | * @param RCC_AHBPeriph: specifies the AHB peripheral to gates its clock. |
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be any combination |
| | | * of the following values: |
| | | * @arg RCC_AHBPeriph_DMA1 |
| | | * @arg RCC_AHBPeriph_DMA2 |
| | | * @arg RCC_AHBPeriph_SRAM |
| | | * @arg RCC_AHBPeriph_FLITF |
| | | * @arg RCC_AHBPeriph_CRC |
| | | * @arg RCC_AHBPeriph_OTG_FS |
| | | * @arg RCC_AHBPeriph_ETH_MAC |
| | | * @arg RCC_AHBPeriph_ETH_MAC_Tx |
| | | * @arg RCC_AHBPeriph_ETH_MAC_Rx |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be any combination of the |
| | | * following values: |
| | | * @arg RCC_AHBPeriph_DMA1 |
| | | * @arg RCC_AHBPeriph_DMA2 |
| | | * @arg RCC_AHBPeriph_SRAM |
| | | * @arg RCC_AHBPeriph_FLITF |
| | | * @arg RCC_AHBPeriph_CRC |
| | | * @arg RCC_AHBPeriph_FSMC |
| | | * @arg RCC_AHBPeriph_SDIO |
| | | * |
| | | * @note SRAM and FLITF clock can be disabled only during sleep mode. |
| | | * @param NewState: new state of the specified peripheral clock. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_AHBPeriphClockCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_AHB_PERIPH(RCC_AHBPeriph)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | if (NewState != DISABLE) |
| | | { |
| | | RCC->AHBENR |= RCC_AHBPeriph; |
| | | } |
| | | else |
| | | { |
| | | RCC->AHBENR &= ~RCC_AHBPeriph; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the High Speed APB (APB2) peripheral clock. |
| | | * @param RCC_APB2Periph: specifies the APB2 peripheral to gates its clock. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB, |
| | | * RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE, |
| | | * RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1, |
| | | * RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1, |
| | | * RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3, |
| | | * RCC_APB2Periph_TIM15, RCC_APB2Periph_TIM16, RCC_APB2Periph_TIM17, |
| | | * RCC_APB2Periph_TIM9, RCC_APB2Periph_TIM10, RCC_APB2Periph_TIM11 |
| | | * @param NewState: new state of the specified peripheral clock. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_APB2_PERIPH(RCC_APB2Periph)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | if (NewState != DISABLE) |
| | | { |
| | | RCC->APB2ENR |= RCC_APB2Periph; |
| | | } |
| | | else |
| | | { |
| | | RCC->APB2ENR &= ~RCC_APB2Periph; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the Low Speed APB (APB1) peripheral clock. |
| | | * @param RCC_APB1Periph: specifies the APB1 peripheral to gates its clock. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4, |
| | | * RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7, |
| | | * RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3, |
| | | * RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4, |
| | | * RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2, |
| | | * RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP, |
| | | * RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_CEC, |
| | | * RCC_APB1Periph_TIM12, RCC_APB1Periph_TIM13, RCC_APB1Periph_TIM14 |
| | | * @param NewState: new state of the specified peripheral clock. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_APB1PeriphClockCmd(uint32_t RCC_APB1Periph, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_APB1_PERIPH(RCC_APB1Periph)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | if (NewState != DISABLE) |
| | | { |
| | | RCC->APB1ENR |= RCC_APB1Periph; |
| | | } |
| | | else |
| | | { |
| | | RCC->APB1ENR &= ~RCC_APB1Periph; |
| | | } |
| | | } |
| | | |
| | | #ifdef STM32F10X_CL |
| | | /** |
| | | * @brief Forces or releases AHB peripheral reset. |
| | | * @note This function applies only to STM32 Connectivity line devices. |
| | | * @param RCC_AHBPeriph: specifies the AHB peripheral to reset. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg RCC_AHBPeriph_OTG_FS |
| | | * @arg RCC_AHBPeriph_ETH_MAC |
| | | * @param NewState: new state of the specified peripheral reset. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_AHBPeriphResetCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_AHB_PERIPH_RESET(RCC_AHBPeriph)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | if (NewState != DISABLE) |
| | | { |
| | | RCC->AHBRSTR |= RCC_AHBPeriph; |
| | | } |
| | | else |
| | | { |
| | | RCC->AHBRSTR &= ~RCC_AHBPeriph; |
| | | } |
| | | } |
| | | #endif /* STM32F10X_CL */ |
| | | |
| | | /** |
| | | * @brief Forces or releases High Speed APB (APB2) peripheral reset. |
| | | * @param RCC_APB2Periph: specifies the APB2 peripheral to reset. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB, |
| | | * RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE, |
| | | * RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1, |
| | | * RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1, |
| | | * RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3, |
| | | * RCC_APB2Periph_TIM15, RCC_APB2Periph_TIM16, RCC_APB2Periph_TIM17, |
| | | * RCC_APB2Periph_TIM9, RCC_APB2Periph_TIM10, RCC_APB2Periph_TIM11 |
| | | * @param NewState: new state of the specified peripheral reset. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_APB2PeriphResetCmd(uint32_t RCC_APB2Periph, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_APB2_PERIPH(RCC_APB2Periph)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | if (NewState != DISABLE) |
| | | { |
| | | RCC->APB2RSTR |= RCC_APB2Periph; |
| | | } |
| | | else |
| | | { |
| | | RCC->APB2RSTR &= ~RCC_APB2Periph; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Forces or releases Low Speed APB (APB1) peripheral reset. |
| | | * @param RCC_APB1Periph: specifies the APB1 peripheral to reset. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4, |
| | | * RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7, |
| | | * RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3, |
| | | * RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4, |
| | | * RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2, |
| | | * RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP, |
| | | * RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_CEC, |
| | | * RCC_APB1Periph_TIM12, RCC_APB1Periph_TIM13, RCC_APB1Periph_TIM14 |
| | | * @param NewState: new state of the specified peripheral clock. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_APB1PeriphResetCmd(uint32_t RCC_APB1Periph, FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_APB1_PERIPH(RCC_APB1Periph)); |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | if (NewState != DISABLE) |
| | | { |
| | | RCC->APB1RSTR |= RCC_APB1Periph; |
| | | } |
| | | else |
| | | { |
| | | RCC->APB1RSTR &= ~RCC_APB1Periph; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Forces or releases the Backup domain reset. |
| | | * @param NewState: new state of the Backup domain reset. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_BackupResetCmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | *(__IO uint32_t *) BDCR_BDRST_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the Clock Security System. |
| | | * @param NewState: new state of the Clock Security System.. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void RCC_ClockSecuritySystemCmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | *(__IO uint32_t *) CR_CSSON_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Selects the clock source to output on MCO pin. |
| | | * @param RCC_MCO: specifies the clock source to output. |
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be one of the |
| | | * following values: |
| | | * @arg RCC_MCO_NoClock: No clock selected |
| | | * @arg RCC_MCO_SYSCLK: System clock selected |
| | | * @arg RCC_MCO_HSI: HSI oscillator clock selected |
| | | * @arg RCC_MCO_HSE: HSE oscillator clock selected |
| | | * @arg RCC_MCO_PLLCLK_Div2: PLL clock divided by 2 selected |
| | | * @arg RCC_MCO_PLL2CLK: PLL2 clock selected |
| | | * @arg RCC_MCO_PLL3CLK_Div2: PLL3 clock divided by 2 selected |
| | | * @arg RCC_MCO_XT1: External 3-25 MHz oscillator clock selected |
| | | * @arg RCC_MCO_PLL3CLK: PLL3 clock selected |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_MCO_NoClock: No clock selected |
| | | * @arg RCC_MCO_SYSCLK: System clock selected |
| | | * @arg RCC_MCO_HSI: HSI oscillator clock selected |
| | | * @arg RCC_MCO_HSE: HSE oscillator clock selected |
| | | * @arg RCC_MCO_PLLCLK_Div2: PLL clock divided by 2 selected |
| | | * |
| | | * @retval None |
| | | */ |
| | | void RCC_MCOConfig(uint8_t RCC_MCO) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_MCO(RCC_MCO)); |
| | | |
| | | /* Perform Byte access to MCO bits to select the MCO source */ |
| | | *(__IO uint8_t *) CFGR_BYTE4_ADDRESS = RCC_MCO; |
| | | } |
| | | |
| | | /** |
| | | * @brief Checks whether the specified RCC flag is set or not. |
| | | * @param RCC_FLAG: specifies the flag to check. |
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be one of the |
| | | * following values: |
| | | * @arg RCC_FLAG_HSIRDY: HSI oscillator clock ready |
| | | * @arg RCC_FLAG_HSERDY: HSE oscillator clock ready |
| | | * @arg RCC_FLAG_PLLRDY: PLL clock ready |
| | | * @arg RCC_FLAG_PLL2RDY: PLL2 clock ready |
| | | * @arg RCC_FLAG_PLL3RDY: PLL3 clock ready |
| | | * @arg RCC_FLAG_LSERDY: LSE oscillator clock ready |
| | | * @arg RCC_FLAG_LSIRDY: LSI oscillator clock ready |
| | | * @arg RCC_FLAG_PINRST: Pin reset |
| | | * @arg RCC_FLAG_PORRST: POR/PDR reset |
| | | * @arg RCC_FLAG_SFTRST: Software reset |
| | | * @arg RCC_FLAG_IWDGRST: Independent Watchdog reset |
| | | * @arg RCC_FLAG_WWDGRST: Window Watchdog reset |
| | | * @arg RCC_FLAG_LPWRRST: Low Power reset |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_FLAG_HSIRDY: HSI oscillator clock ready |
| | | * @arg RCC_FLAG_HSERDY: HSE oscillator clock ready |
| | | * @arg RCC_FLAG_PLLRDY: PLL clock ready |
| | | * @arg RCC_FLAG_LSERDY: LSE oscillator clock ready |
| | | * @arg RCC_FLAG_LSIRDY: LSI oscillator clock ready |
| | | * @arg RCC_FLAG_PINRST: Pin reset |
| | | * @arg RCC_FLAG_PORRST: POR/PDR reset |
| | | * @arg RCC_FLAG_SFTRST: Software reset |
| | | * @arg RCC_FLAG_IWDGRST: Independent Watchdog reset |
| | | * @arg RCC_FLAG_WWDGRST: Window Watchdog reset |
| | | * @arg RCC_FLAG_LPWRRST: Low Power reset |
| | | * |
| | | * @retval The new state of RCC_FLAG (SET or RESET). |
| | | */ |
| | | FlagStatus RCC_GetFlagStatus(uint8_t RCC_FLAG) |
| | | { |
| | | uint32_t tmp = 0; |
| | | uint32_t statusreg = 0; |
| | | FlagStatus bitstatus = RESET; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_FLAG(RCC_FLAG)); |
| | | |
| | | /* Get the RCC register index */ |
| | | tmp = RCC_FLAG >> 5; |
| | | if (tmp == 1) /* The flag to check is in CR register */ |
| | | { |
| | | statusreg = RCC->CR; |
| | | } |
| | | else if (tmp == 2) /* The flag to check is in BDCR register */ |
| | | { |
| | | statusreg = RCC->BDCR; |
| | | } |
| | | else /* The flag to check is in CSR register */ |
| | | { |
| | | statusreg = RCC->CSR; |
| | | } |
| | | |
| | | /* Get the flag position */ |
| | | tmp = RCC_FLAG & FLAG_Mask; |
| | | if ((statusreg & ((uint32_t)1 << tmp)) != (uint32_t)RESET) |
| | | { |
| | | bitstatus = SET; |
| | | } |
| | | else |
| | | { |
| | | bitstatus = RESET; |
| | | } |
| | | |
| | | /* Return the flag status */ |
| | | return bitstatus; |
| | | } |
| | | |
| | | /** |
| | | * @brief Clears the RCC reset flags. |
| | | * @note The reset flags are: RCC_FLAG_PINRST, RCC_FLAG_PORRST, RCC_FLAG_SFTRST, |
| | | * RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST, RCC_FLAG_LPWRRST |
| | | * @param None |
| | | * @retval None |
| | | */ |
| | | void RCC_ClearFlag(void) |
| | | { |
| | | /* Set RMVF bit to clear the reset flags */ |
| | | RCC->CSR |= CSR_RMVF_Set; |
| | | } |
| | | |
| | | /** |
| | | * @brief Checks whether the specified RCC interrupt has occurred or not. |
| | | * @param RCC_IT: specifies the RCC interrupt source to check. |
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be one of the |
| | | * following values: |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt |
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt |
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt |
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt |
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt |
| | | * @arg RCC_IT_PLL2RDY: PLL2 ready interrupt |
| | | * @arg RCC_IT_PLL3RDY: PLL3 ready interrupt |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be one of the following values: |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt |
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt |
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt |
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt |
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt |
| | | * |
| | | * @retval The new state of RCC_IT (SET or RESET). |
| | | */ |
| | | ITStatus RCC_GetITStatus(uint8_t RCC_IT) |
| | | { |
| | | ITStatus bitstatus = RESET; |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_GET_IT(RCC_IT)); |
| | | |
| | | /* Check the status of the specified RCC interrupt */ |
| | | if ((RCC->CIR & RCC_IT) != (uint32_t)RESET) |
| | | { |
| | | bitstatus = SET; |
| | | } |
| | | else |
| | | { |
| | | bitstatus = RESET; |
| | | } |
| | | |
| | | /* Return the RCC_IT status */ |
| | | return bitstatus; |
| | | } |
| | | |
| | | /** |
| | | * @brief Clears the RCC's interrupt pending bits. |
| | | * @param RCC_IT: specifies the interrupt pending bit to clear. |
| | | * |
| | | * For @b STM32_Connectivity_line_devices, this parameter can be any combination |
| | | * of the following values: |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt |
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt |
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt |
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt |
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt |
| | | * @arg RCC_IT_PLL2RDY: PLL2 ready interrupt |
| | | * @arg RCC_IT_PLL3RDY: PLL3 ready interrupt |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt |
| | | * |
| | | * For @b other_STM32_devices, this parameter can be any combination of the |
| | | * following values: |
| | | * @arg RCC_IT_LSIRDY: LSI ready interrupt |
| | | * @arg RCC_IT_LSERDY: LSE ready interrupt |
| | | * @arg RCC_IT_HSIRDY: HSI ready interrupt |
| | | * @arg RCC_IT_HSERDY: HSE ready interrupt |
| | | * @arg RCC_IT_PLLRDY: PLL ready interrupt |
| | | * |
| | | * @arg RCC_IT_CSS: Clock Security System interrupt |
| | | * @retval None |
| | | */ |
| | | void RCC_ClearITPendingBit(uint8_t RCC_IT) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_RCC_CLEAR_IT(RCC_IT)); |
| | | |
| | | /* Perform Byte access to RCC_CIR[23:16] bits to clear the selected interrupt |
| | | pending bits */ |
| | | *(__IO uint8_t *) CIR_BYTE3_ADDRESS = RCC_IT; |
| | | } |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |