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Diff: targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_rcc.c
- Revision:
- 126:549ba18ddd81
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_rcc.c Wed Mar 19 16:00:09 2014 +0000
@@ -0,0 +1,1485 @@
+/**
+ ******************************************************************************
+ * @file stm32f10x_rcc.c
+ * @author MCD Application Team
+ * @version V3.6.1
+ * @date 05-March-2012
+ * @brief This file provides all the RCC firmware functions.
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "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 STMicroelectronics *****END OF FILE****/