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******************************************************************************
* @file stm32l1xx_rcc.h
* @author MCD Application Team
* @version V1.2.0
* @date 22-February-2013
* @brief This file contains all the functions prototypes for the RCC
* firmware library.
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L1xx_RCC_H
#define __STM32L1xx_RCC_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l1xx.h"
/** @addtogroup STM32L1xx_StdPeriph_Driver
* @{
*/
/** @addtogroup RCC
* @{
*/
/* Exported types ------------------------------------------------------------*/
typedef struct
{
uint32_t SYSCLK_Frequency;
uint32_t HCLK_Frequency;
uint32_t PCLK1_Frequency;
uint32_t PCLK2_Frequency;
}RCC_ClocksTypeDef;
/* Exported constants --------------------------------------------------------*/
/** @defgroup RCC_Exported_Constants
* @{
*/
/** @defgroup RCC_HSE_configuration
* @{
*/
#define RCC_HSE_OFF ((uint8_t)0x00)
#define RCC_HSE_ON ((uint8_t)0x01)
#define RCC_HSE_Bypass ((uint8_t)0x05)
#define IS_RCC_HSE(HSE) (((HSE) == RCC_HSE_OFF) || ((HSE) == RCC_HSE_ON) || \
((HSE) == RCC_HSE_Bypass))
/**
* @}
*/
/** @defgroup RCC_MSI_Clock_Range
* @{
*/
#define RCC_MSIRange_0 RCC_ICSCR_MSIRANGE_0 /*!< MSI = 65.536 KHz */
#define RCC_MSIRange_1 RCC_ICSCR_MSIRANGE_1 /*!< MSI = 131.072 KHz */
#define RCC_MSIRange_2 RCC_ICSCR_MSIRANGE_2 /*!< MSI = 262.144 KHz */
#define RCC_MSIRange_3 RCC_ICSCR_MSIRANGE_3 /*!< MSI = 524.288 KHz */
#define RCC_MSIRange_4 RCC_ICSCR_MSIRANGE_4 /*!< MSI = 1.048 MHz */
#define RCC_MSIRange_5 RCC_ICSCR_MSIRANGE_5 /*!< MSI = 2.097 MHz */
#define RCC_MSIRange_6 RCC_ICSCR_MSIRANGE_6 /*!< MSI = 4.194 MHz */
#define IS_RCC_MSI_CLOCK_RANGE(RANGE) (((RANGE) == RCC_MSIRange_0) || \
((RANGE) == RCC_MSIRange_1) || \
((RANGE) == RCC_MSIRange_2) || \
((RANGE) == RCC_MSIRange_3) || \
((RANGE) == RCC_MSIRange_4) || \
((RANGE) == RCC_MSIRange_5) || \
((RANGE) == RCC_MSIRange_6))
/**
* @}
*/
/** @defgroup RCC_PLL_Clock_Source
* @{
*/
#define RCC_PLLSource_HSI ((uint8_t)0x00)
#define RCC_PLLSource_HSE ((uint8_t)0x01)
#define IS_RCC_PLL_SOURCE(SOURCE) (((SOURCE) == RCC_PLLSource_HSI) || \
((SOURCE) == RCC_PLLSource_HSE))
/**
* @}
*/
/** @defgroup RCC_PLL_Multiplication_Factor
* @{
*/
#define RCC_PLLMul_3 ((uint8_t)0x00)
#define RCC_PLLMul_4 ((uint8_t)0x04)
#define RCC_PLLMul_6 ((uint8_t)0x08)
#define RCC_PLLMul_8 ((uint8_t)0x0C)
#define RCC_PLLMul_12 ((uint8_t)0x10)
#define RCC_PLLMul_16 ((uint8_t)0x14)
#define RCC_PLLMul_24 ((uint8_t)0x18)
#define RCC_PLLMul_32 ((uint8_t)0x1C)
#define RCC_PLLMul_48 ((uint8_t)0x20)
#define IS_RCC_PLL_MUL(MUL) (((MUL) == RCC_PLLMul_3) || ((MUL) == RCC_PLLMul_4) || \
((MUL) == RCC_PLLMul_6) || ((MUL) == RCC_PLLMul_8) || \
((MUL) == RCC_PLLMul_12) || ((MUL) == RCC_PLLMul_16) || \
((MUL) == RCC_PLLMul_24) || ((MUL) == RCC_PLLMul_32) || \
((MUL) == RCC_PLLMul_48))
/**
* @}
*/
/** @defgroup RCC_PLL_Divider_Factor
* @{
*/
#define RCC_PLLDiv_2 ((uint8_t)0x40)
#define RCC_PLLDiv_3 ((uint8_t)0x80)
#define RCC_PLLDiv_4 ((uint8_t)0xC0)
#define IS_RCC_PLL_DIV(DIV) (((DIV) == RCC_PLLDiv_2) || ((DIV) == RCC_PLLDiv_3) || \
((DIV) == RCC_PLLDiv_4))
/**
* @}
*/
/** @defgroup RCC_System_Clock_Source
* @{
*/
#define RCC_SYSCLKSource_MSI RCC_CFGR_SW_MSI
#define RCC_SYSCLKSource_HSI RCC_CFGR_SW_HSI
#define RCC_SYSCLKSource_HSE RCC_CFGR_SW_HSE
#define RCC_SYSCLKSource_PLLCLK RCC_CFGR_SW_PLL
#define IS_RCC_SYSCLK_SOURCE(SOURCE) (((SOURCE) == RCC_SYSCLKSource_MSI) || \
((SOURCE) == RCC_SYSCLKSource_HSI) || \
((SOURCE) == RCC_SYSCLKSource_HSE) || \
((SOURCE) == RCC_SYSCLKSource_PLLCLK))
/**
* @}
*/
/** @defgroup RCC_AHB_Clock_Source
* @{
*/
#define RCC_SYSCLK_Div1 RCC_CFGR_HPRE_DIV1
#define RCC_SYSCLK_Div2 RCC_CFGR_HPRE_DIV2
#define RCC_SYSCLK_Div4 RCC_CFGR_HPRE_DIV4
#define RCC_SYSCLK_Div8 RCC_CFGR_HPRE_DIV8
#define RCC_SYSCLK_Div16 RCC_CFGR_HPRE_DIV16
#define RCC_SYSCLK_Div64 RCC_CFGR_HPRE_DIV64
#define RCC_SYSCLK_Div128 RCC_CFGR_HPRE_DIV128
#define RCC_SYSCLK_Div256 RCC_CFGR_HPRE_DIV256
#define RCC_SYSCLK_Div512 RCC_CFGR_HPRE_DIV512
#define IS_RCC_HCLK(HCLK) (((HCLK) == RCC_SYSCLK_Div1) || ((HCLK) == RCC_SYSCLK_Div2) || \
((HCLK) == RCC_SYSCLK_Div4) || ((HCLK) == RCC_SYSCLK_Div8) || \
((HCLK) == RCC_SYSCLK_Div16) || ((HCLK) == RCC_SYSCLK_Div64) || \
((HCLK) == RCC_SYSCLK_Div128) || ((HCLK) == RCC_SYSCLK_Div256) || \
((HCLK) == RCC_SYSCLK_Div512))
/**
* @}
*/
/** @defgroup RCC_APB1_APB2_Clock_Source
* @{
*/
#define RCC_HCLK_Div1 RCC_CFGR_PPRE1_DIV1
#define RCC_HCLK_Div2 RCC_CFGR_PPRE1_DIV2
#define RCC_HCLK_Div4 RCC_CFGR_PPRE1_DIV4
#define RCC_HCLK_Div8 RCC_CFGR_PPRE1_DIV8
#define RCC_HCLK_Div16 RCC_CFGR_PPRE1_DIV16
#define IS_RCC_PCLK(PCLK) (((PCLK) == RCC_HCLK_Div1) || ((PCLK) == RCC_HCLK_Div2) || \
((PCLK) == RCC_HCLK_Div4) || ((PCLK) == RCC_HCLK_Div8) || \
((PCLK) == RCC_HCLK_Div16))
/**
* @}
*/
/** @defgroup RCC_Interrupt_Source
* @{
*/
#define RCC_IT_LSIRDY ((uint8_t)0x01)
#define RCC_IT_LSERDY ((uint8_t)0x02)
#define RCC_IT_HSIRDY ((uint8_t)0x04)
#define RCC_IT_HSERDY ((uint8_t)0x08)
#define RCC_IT_PLLRDY ((uint8_t)0x10)
#define RCC_IT_MSIRDY ((uint8_t)0x20)
#define RCC_IT_LSECSS ((uint8_t)0x40)
#define RCC_IT_CSS ((uint8_t)0x80)
#define IS_RCC_IT(IT) ((((IT) & (uint8_t)0x80) == 0x00) && ((IT) != 0x00))
#define IS_RCC_GET_IT(IT) (((IT) == RCC_IT_LSIRDY) || ((IT) == RCC_IT_LSERDY) || \
((IT) == RCC_IT_HSIRDY) || ((IT) == RCC_IT_HSERDY) || \
((IT) == RCC_IT_PLLRDY) || ((IT) == RCC_IT_MSIRDY) || \
((IT) == RCC_IT_CSS) || ((IT) == RCC_IT_LSECSS))
#define IS_RCC_CLEAR_IT(IT) ((((IT) & (uint8_t)0x00) == 0x00) && ((IT) != 0x00))
/**
* @}
*/
/** @defgroup RCC_LSE_Configuration
* @{
*/
#define RCC_LSE_OFF ((uint8_t)0x00)
#define RCC_LSE_ON ((uint8_t)0x01)
#define RCC_LSE_Bypass ((uint8_t)0x05)
#define IS_RCC_LSE(LSE) (((LSE) == RCC_LSE_OFF) || ((LSE) == RCC_LSE_ON) || \
((LSE) == RCC_LSE_Bypass))
/**
* @}
*/
/** @defgroup RCC_RTC_Clock_Source
* @{
*/
#define RCC_RTCCLKSource_LSE RCC_CSR_RTCSEL_LSE
#define RCC_RTCCLKSource_LSI RCC_CSR_RTCSEL_LSI
#define RCC_RTCCLKSource_HSE_Div2 RCC_CSR_RTCSEL_HSE
#define RCC_RTCCLKSource_HSE_Div4 ((uint32_t)RCC_CSR_RTCSEL_HSE | RCC_CR_RTCPRE_0)
#define RCC_RTCCLKSource_HSE_Div8 ((uint32_t)RCC_CSR_RTCSEL_HSE | RCC_CR_RTCPRE_1)
#define RCC_RTCCLKSource_HSE_Div16 ((uint32_t)RCC_CSR_RTCSEL_HSE | RCC_CR_RTCPRE)
#define IS_RCC_RTCCLK_SOURCE(SOURCE) (((SOURCE) == RCC_RTCCLKSource_LSE) || \
((SOURCE) == RCC_RTCCLKSource_LSI) || \
((SOURCE) == RCC_RTCCLKSource_HSE_Div2) || \
((SOURCE) == RCC_RTCCLKSource_HSE_Div4) || \
((SOURCE) == RCC_RTCCLKSource_HSE_Div8) || \
((SOURCE) == RCC_RTCCLKSource_HSE_Div16))
/**
* @}
*/
/** @defgroup RCC_AHB_Peripherals
* @{
*/
#define RCC_AHBPeriph_GPIOA RCC_AHBENR_GPIOAEN
#define RCC_AHBPeriph_GPIOB RCC_AHBENR_GPIOBEN
#define RCC_AHBPeriph_GPIOC RCC_AHBENR_GPIOCEN
#define RCC_AHBPeriph_GPIOD RCC_AHBENR_GPIODEN
#define RCC_AHBPeriph_GPIOE RCC_AHBENR_GPIOEEN
#define RCC_AHBPeriph_GPIOH RCC_AHBENR_GPIOHEN
#define RCC_AHBPeriph_GPIOF RCC_AHBENR_GPIOFEN
#define RCC_AHBPeriph_GPIOG RCC_AHBENR_GPIOGEN
#define RCC_AHBPeriph_CRC RCC_AHBENR_CRCEN
#define RCC_AHBPeriph_FLITF RCC_AHBENR_FLITFEN
#define RCC_AHBPeriph_SRAM RCC_AHBLPENR_SRAMLPEN
#define RCC_AHBPeriph_DMA1 RCC_AHBENR_DMA1EN
#define RCC_AHBPeriph_DMA2 RCC_AHBENR_DMA2EN
#define RCC_AHBPeriph_AES RCC_AHBENR_AESEN
#define RCC_AHBPeriph_FSMC RCC_AHBENR_FSMCEN
#define IS_RCC_AHB_PERIPH(PERIPH) ((((PERIPH) & 0xB4FF6F00) == 0x00) && ((PERIPH) != 0x00))
#define IS_RCC_AHB_LPMODE_PERIPH(PERIPH) ((((PERIPH) & 0xB4FF6F00) == 0x00) && ((PERIPH) != 0x00))
/**
* @}
*/
/** @defgroup RCC_APB2_Peripherals
* @{
*/
#define RCC_APB2Periph_SYSCFG RCC_APB2ENR_SYSCFGEN
#define RCC_APB2Periph_TIM9 RCC_APB2ENR_TIM9EN
#define RCC_APB2Periph_TIM10 RCC_APB2ENR_TIM10EN
#define RCC_APB2Periph_TIM11 RCC_APB2ENR_TIM11EN
#define RCC_APB2Periph_ADC1 RCC_APB2ENR_ADC1EN
#define RCC_APB2Periph_SDIO RCC_APB2ENR_SDIOEN
#define RCC_APB2Periph_SPI1 RCC_APB2ENR_SPI1EN
#define RCC_APB2Periph_USART1 RCC_APB2ENR_USART1EN
#define IS_RCC_APB2_PERIPH(PERIPH) ((((PERIPH) & 0xFFFFA5E2) == 0x00) && ((PERIPH) != 0x00))
/**
* @}
*/
/** @defgroup RCC_APB1_Peripherals
* @{
*/
#define RCC_APB1Periph_TIM2 RCC_APB1ENR_TIM2EN
#define RCC_APB1Periph_TIM3 RCC_APB1ENR_TIM3EN
#define RCC_APB1Periph_TIM4 RCC_APB1ENR_TIM4EN
#define RCC_APB1Periph_TIM5 RCC_APB1ENR_TIM5EN
#define RCC_APB1Periph_TIM6 RCC_APB1ENR_TIM6EN
#define RCC_APB1Periph_TIM7 RCC_APB1ENR_TIM7EN
#define RCC_APB1Periph_LCD RCC_APB1ENR_LCDEN
#define RCC_APB1Periph_WWDG RCC_APB1ENR_WWDGEN
#define RCC_APB1Periph_SPI2 RCC_APB1ENR_SPI2EN
#define RCC_APB1Periph_SPI3 RCC_APB1ENR_SPI3EN
#define RCC_APB1Periph_USART2 RCC_APB1ENR_USART2EN
#define RCC_APB1Periph_USART3 RCC_APB1ENR_USART3EN
#define RCC_APB1Periph_UART4 RCC_APB1ENR_UART4EN
#define RCC_APB1Periph_UART5 RCC_APB1ENR_UART5EN
#define RCC_APB1Periph_I2C1 RCC_APB1ENR_I2C1EN
#define RCC_APB1Periph_I2C2 RCC_APB1ENR_I2C2EN
#define RCC_APB1Periph_USB RCC_APB1ENR_USBEN
#define RCC_APB1Periph_PWR RCC_APB1ENR_PWREN
#define RCC_APB1Periph_DAC RCC_APB1ENR_DACEN
#define RCC_APB1Periph_COMP RCC_APB1ENR_COMPEN
#define IS_RCC_APB1_PERIPH(PERIPH) ((((PERIPH) & 0x4F0135C0) == 0x00) && ((PERIPH) != 0x00))
/**
* @}
*/
/** @defgroup RCC_MCO_Clock_Source
* @{
*/
#define RCC_MCOSource_NoClock ((uint8_t)0x00)
#define RCC_MCOSource_SYSCLK ((uint8_t)0x01)
#define RCC_MCOSource_HSI ((uint8_t)0x02)
#define RCC_MCOSource_MSI ((uint8_t)0x03)
#define RCC_MCOSource_HSE ((uint8_t)0x04)
#define RCC_MCOSource_PLLCLK ((uint8_t)0x05)
#define RCC_MCOSource_LSI ((uint8_t)0x06)
#define RCC_MCOSource_LSE ((uint8_t)0x07)
#define IS_RCC_MCO_SOURCE(SOURCE) (((SOURCE) == RCC_MCOSource_NoClock) || ((SOURCE) == RCC_MCOSource_SYSCLK) || \
((SOURCE) == RCC_MCOSource_HSI) || ((SOURCE) == RCC_MCOSource_MSI) || \
((SOURCE) == RCC_MCOSource_HSE) || ((SOURCE) == RCC_MCOSource_PLLCLK) || \
((SOURCE) == RCC_MCOSource_LSI) || ((SOURCE) == RCC_MCOSource_LSE))
/**
* @}
*/
/** @defgroup RCC_MCO_Output_Divider
* @{
*/
#define RCC_MCODiv_1 ((uint8_t)0x00)
#define RCC_MCODiv_2 ((uint8_t)0x10)
#define RCC_MCODiv_4 ((uint8_t)0x20)
#define RCC_MCODiv_8 ((uint8_t)0x30)
#define RCC_MCODiv_16 ((uint8_t)0x40)
#define IS_RCC_MCO_DIV(DIV) (((DIV) == RCC_MCODiv_1) || ((DIV) == RCC_MCODiv_2) || \
((DIV) == RCC_MCODiv_4) || ((DIV) == RCC_MCODiv_8) || \
((DIV) == RCC_MCODiv_16))
/**
* @}
*/
/** @defgroup RCC_Flag
* @{
*/
#define RCC_FLAG_HSIRDY ((uint8_t)0x21)
#define RCC_FLAG_MSIRDY ((uint8_t)0x29)
#define RCC_FLAG_HSERDY ((uint8_t)0x31)
#define RCC_FLAG_PLLRDY ((uint8_t)0x39)
#define RCC_FLAG_LSERDY ((uint8_t)0x49)
#define RCC_FLAG_LSECSS ((uint8_t)0x4A)
#define RCC_FLAG_LSIRDY ((uint8_t)0x41)
#define RCC_FLAG_OBLRST ((uint8_t)0x59)
#define RCC_FLAG_PINRST ((uint8_t)0x5A)
#define RCC_FLAG_PORRST ((uint8_t)0x5B)
#define RCC_FLAG_SFTRST ((uint8_t)0x5C)
#define RCC_FLAG_IWDGRST ((uint8_t)0x5D)
#define RCC_FLAG_WWDGRST ((uint8_t)0x5E)
#define RCC_FLAG_LPWRRST ((uint8_t)0x5F)
#define IS_RCC_FLAG(FLAG) (((FLAG) == RCC_FLAG_HSIRDY) || ((FLAG) == RCC_FLAG_HSERDY) || \
((FLAG) == RCC_FLAG_MSIRDY) || ((FLAG) == RCC_FLAG_PLLRDY) || \
((FLAG) == RCC_FLAG_LSERDY) || ((FLAG) == RCC_FLAG_LSIRDY) || \
((FLAG) == RCC_FLAG_PINRST) || ((FLAG) == RCC_FLAG_PORRST) || \
((FLAG) == RCC_FLAG_SFTRST) || ((FLAG) == RCC_FLAG_IWDGRST)|| \
((FLAG) == RCC_FLAG_WWDGRST)|| ((FLAG) == RCC_FLAG_LPWRRST)|| \
((FLAG) == RCC_FLAG_WWDGRST)|| ((FLAG) == RCC_FLAG_LSECSS))
#define IS_RCC_HSI_CALIBRATION_VALUE(VALUE) ((VALUE) <= 0x1F)
#define IS_RCC_MSI_CALIBRATION_VALUE(VALUE) ((VALUE) <= 0x3F)
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
/* Function used to set the RCC clock configuration to the default reset state */
void RCC_DeInit(void);
/* Internal/external clocks, PLL, CSS and MCO configuration functions *********/
void RCC_HSEConfig(uint8_t RCC_HSE);
ErrorStatus RCC_WaitForHSEStartUp(void);
void RCC_MSIRangeConfig(uint32_t RCC_MSIRange);
void RCC_AdjustMSICalibrationValue(uint8_t MSICalibrationValue);
void RCC_MSICmd(FunctionalState NewState);
void RCC_AdjustHSICalibrationValue(uint8_t HSICalibrationValue);
void RCC_HSICmd(FunctionalState NewState);
void RCC_LSEConfig(uint8_t RCC_LSE);
void RCC_LSICmd(FunctionalState NewState);
void RCC_PLLConfig(uint8_t RCC_PLLSource, uint8_t RCC_PLLMul, uint8_t RCC_PLLDiv);
void RCC_PLLCmd(FunctionalState NewState);
void RCC_ClockSecuritySystemCmd(FunctionalState NewState);
void RCC_LSEClockSecuritySystemCmd(FunctionalState NewState);
void RCC_MCOConfig(uint8_t RCC_MCOSource, uint8_t RCC_MCODiv);
/* System, AHB and APB busses clocks configuration functions ******************/
void RCC_SYSCLKConfig(uint32_t RCC_SYSCLKSource);
uint8_t RCC_GetSYSCLKSource(void);
void RCC_HCLKConfig(uint32_t RCC_SYSCLK);
void RCC_PCLK1Config(uint32_t RCC_HCLK);
void RCC_PCLK2Config(uint32_t RCC_HCLK);
void RCC_GetClocksFreq(RCC_ClocksTypeDef* RCC_Clocks);
/* Peripheral clocks configuration functions **********************************/
void RCC_RTCCLKConfig(uint32_t RCC_RTCCLKSource);
void RCC_RTCCLKCmd(FunctionalState NewState);
void RCC_RTCResetCmd(FunctionalState NewState);
void RCC_AHBPeriphClockCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState);
void RCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState);
void RCC_APB1PeriphClockCmd(uint32_t RCC_APB1Periph, FunctionalState NewState);
void RCC_AHBPeriphResetCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState);
void RCC_APB2PeriphResetCmd(uint32_t RCC_APB2Periph, FunctionalState NewState);
void RCC_APB1PeriphResetCmd(uint32_t RCC_APB1Periph, FunctionalState NewState);
void RCC_AHBPeriphClockLPModeCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState);
void RCC_APB2PeriphClockLPModeCmd(uint32_t RCC_APB2Periph, FunctionalState NewState);
void RCC_APB1PeriphClockLPModeCmd(uint32_t RCC_APB1Periph, FunctionalState NewState);
/* Interrupts and flags management functions **********************************/
void RCC_ITConfig(uint8_t RCC_IT, FunctionalState NewState);
FlagStatus RCC_GetFlagStatus(uint8_t RCC_FLAG);
void RCC_ClearFlag(void);
ITStatus RCC_GetITStatus(uint8_t RCC_IT);
void RCC_ClearITPendingBit(uint8_t RCC_IT);
#ifdef __cplusplus
}
#endif
#endif /* __STM32L1xx_RCC_H */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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