rccu.h
资源名称:str711USB.rar [点击查看]
上传用户:yyyd609
上传日期:2022-07-18
资源大小:183k
文件大小:12k
源码类别:
微处理器开发
开发平台:
C/C++
- /******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
- * File Name : rccu.h
- * Author : MCD Application Team
- * Date First Issued : 28/07/2003
- * Description : This file contains all the functions prototypes for the
- * RCCU software library.
- ********************************************************************************
- * History:
- * 01/01/2004 : V1.2
- * 14/07/2004 : V1.3
- *******************************************************************************/
- #ifndef __RCCU_H
- #define __RCCU_H
- #include "71x_lib.h"
- typedef enum {
- RCCU_DEFAULT=0x00,
- RCCU_RCLK_2 =0x01,
- RCCU_RCLK_4 =0x02,
- RCCU_RCLK_8 =0x03
- } RCCU_Clock_Div;
- typedef enum {
- RCCU_PLL1_Output,
- RCCU_CLOCK2_16,
- RCCU_CLOCK2,
- RCCU_RTC_CLOCK
- } RCCU_RCLK_Clocks;
- typedef enum {
- RCCU_Mul_12=0x01,
- RCCU_Mul_16=0x03,
- RCCU_Mul_20=0x00,
- RCCU_Mul_28=0x02
- } RCCU_PLL_Mul;
- typedef enum {
- RCCU_Div_1=0x00,
- RCCU_Div_2=0x01,
- RCCU_Div_3=0x02,
- RCCU_Div_4=0x03,
- RCCU_Div_5=0x04,
- RCCU_Div_6=0x05,
- RCCU_Div_7=0x06
- } RCCU_PLL_Div;
- typedef enum {
- RCCU_PLL2_Output = 0x01,
- RCCU_USBCK = 0x00
- } RCCU_USB_Clocks;
- typedef enum {
- RCCU_CLK2,
- RCCU_RCLK,
- RCCU_MCLK,
- RCCU_PCLK,
- RCCU_FCLK
- } RCCU_Clocks;
- typedef enum {
- RCCU_PLL1_LOCK_IT = 0x0080,
- RCCU_CKAF_IT = 0x0100,
- RCCU_CK2_16_IT = 0x0200,
- RCCU_STOP_IT = 0x0400
- } RCCU_Interrupts;
- typedef enum {
- RCCU_PLL1_LOCK = 0x0002,
- RCCU_CKAF_ST = 0x0004,
- RCCU_PLL1_LOCK_I = 0x0800,
- RCCU_CKAF_I = 0x1000,
- RCCU_CK2_16_I = 0x2000,
- RCCU_STOP_I = 0x4000
- } RCCU_Flags;
- typedef enum {
- RCCU_ExternalReset = 0x00000000,
- RCCU_SoftwareReset = 0x00000020,
- RCCU_WDGReset = 0x00000040,
- RCCU_RTCAlarmReset = 0x00000080,
- RCCU_LVDReset = 0x00000200,
- RCCU_WKPReset = 0x00000400
- }RCCU_ResetSources;
- #define RCCU_Div2_Mask 0x00008000
- #define RCCU_Div2_Index 0x0F
- #define RCCU_FACT_Mask 0x0003
- #define RCCU_FACT1_Mask 0x0003
- #define RCCU_FACT2_Mask 0x0300
- #define RCCU_FACT2_Index 0x08
- #define RCCU_MX_Mask 0x00000030
- #define RCCU_MX_Index 0x04
- #define RCCU_DX_Mask 0x00000007
- #define RCCU_FREEN_Mask 0x00000080
- #define RCCU_CSU_CKSEL_Mask 0x00000001
- #define RCCU_CK2_16_Mask 0x00000008
- #define RCCU_CKAF_SEL_Mask 0x00000004
- #define RCCU_LOCK_Mask 0x00000002
- #define RCCU_USBEN_Mask 0x0100
- #define RCCU_USBEN_Index 0x08
- #define RCCU_ResetSources_Mask 0x000006E0
- // Main Oscillator Frequency value = 16 Mhz
- #define RCCU_Main_Osc 16000000
- // RTC Oscillator Frequency value = 32 768 Hz
- #define RCCU_RTC_Osc 32768
- /*******************************************************************************
- * Function Name : RCCU_Div2Config
- * Description : Enables/Disables the clock division by two
- * Input : NewState : ENABLE or DISABLE
- * Return : None
- *******************************************************************************/
- inline void RCCU_Div2Config ( FunctionalState NewState )
- {
- if (NewState == ENABLE) RCCU->CFR |= RCCU_Div2_Mask;
- else RCCU->CFR &= ~RCCU_Div2_Mask;
- }
- /*******************************************************************************
- * Function Name : RCCU_Div2Status
- * Description : Gets the Div2 Flag status
- * Input : None
- * Input : FlagStatus
- * Return : None
- *******************************************************************************/
- inline FlagStatus RCCU_Div2Status ( void )
- {
- return (RCCU->CFR & RCCU_Div2_Mask) == 0 ? RESET : SET;
- }
- /*******************************************************************************
- * Function Name : RCCU_MCLKConfig
- * Description : Selects the division factor for RCLK to obtain the
- * MCLK clock for the CPU
- * Input : New_Clock : RCCU_DEFAULT, RCCU_RCLK_2, RCCU_RCLK_4, RCCU_RCLK_8
- * Return : None
- *******************************************************************************/
- inline void RCCU_MCLKConfig ( RCCU_Clock_Div New_Clock )
- {
- PCU->MDIVR = ( PCU->MDIVR & ~RCCU_FACT_Mask ) | New_Clock;
- }
- /*******************************************************************************
- * Function Name : RCCU_FCLKConfig
- * Description : Selects the division factor for RCLK to obtain the
- * FCLK clock for the APB1 fast peripherals (PCLK1).
- * Input : New_Clock : RCCU_DEFAULT, RCCU_RCLK_2,
- * RCCU_RCLK_4, RCCU_RCLK_8
- * Return : None
- *******************************************************************************/
- inline void RCCU_FCLKConfig ( RCCU_Clock_Div New_Clock )
- {
- PCU->PDIVR = ( PCU->PDIVR & ~RCCU_FACT1_Mask ) | New_Clock;
- }
- /*******************************************************************************
- * Function Name : RCCU_PCLKConfig
- * Description : Selects the division factor for RCLK to obtain the
- * PCLK clock for the APB2 peripherals (PCLK2).
- * Input : New_Clock : RCCU_DEFAULT, RCCU_RCLK_2,
- * RCCU_RCLK_4, RCCU_RCLK_8
- * Return : None
- *******************************************************************************/
- inline void RCCU_PCLKConfig ( RCCU_Clock_Div New_Clock )
- {
- PCU->PDIVR =(PCU->PDIVR & ~RCCU_FACT2_Mask)|(New_Clock << RCCU_FACT2_Index);
- }
- /*******************************************************************************
- * Function Name : RCCU_PLL1Config
- * Description : Configures the PLL1 div & mul factors.
- * Input : New_Mul : RCCU_Mul_12, RCCU_Mul_16, RCCU_Mul_20, RCCU_Mul_28
- * : New_Div : RCCU_Div_1, RCCU_Div_2, RCCU_Div_3,
- * RCCU_Div_4, RCCU_Div_5, RCCU_Div_6, RCCU_Div_7
- * Return : None
- *******************************************************************************/
- void RCCU_PLL1Config ( RCCU_PLL_Mul New_Mul, RCCU_PLL_Div New_Div );
- /*******************************************************************************
- * Function Name : RCCU_PLL2Config
- * Description : Configures the PLL2 div & mul factors.
- * Input : New_Mul : RCCU_Mul_12, RCCU_Mul_16, RCCU_Mul_20, RCCU_Mul_28
- * : New_Div : RCCU_Div_1, RCCU_Div_2, RCCU_Div_3, RCCU_Div_4,
- * RCCU_Div_5, RCCU_Div_6, RCCU_Div_7
- * Return : None
- *******************************************************************************/
- void RCCU_PLL2Config ( RCCU_PLL_Mul New_Mul, RCCU_PLL_Div New_Div );
- /*******************************************************************************
- * Function Name : RCCU_RCLKSourceConfig
- * Description : Selects the RCLK source clock
- * Input : New_Clock : RCCU_PLL1_OutPut, RCCU_CLOCK2_16, RCCU_CLOCK2
- * Return : None
- *******************************************************************************/
- void RCCU_RCLKSourceConfig ( RCCU_RCLK_Clocks New_Clock );
- /*******************************************************************************
- * Function Name : RCCU_RCLKClockSource
- * Description : Returns the current RCLK source clock
- * Input : None
- * Return : RCCU_PLL1_Output, RCCU_CLOCK2_16, RCCU_CLOCK2
- *******************************************************************************/
- RCCU_RCLK_Clocks RCCU_RCLKClockSource ( void );
- /*******************************************************************************
- * Function Name : RCCU_USBCLKConfig
- * Description : Selects the USB source clock
- * Input : New_Clock : RCCU_PLL2_Output, RCCU_USBCK
- * Return : None
- *******************************************************************************/
- inline void RCCU_USBCLKConfig ( RCCU_USB_Clocks New_Clock )
- {
- PCU->PLL2CR = (PCU->PLL2CR & ~RCCU_USBEN_Mask)|(New_Clock << RCCU_USBEN_Index);
- }
- /*******************************************************************************
- * Function Name : RCCU_USBClockSource
- * Description : Gets the USB source clock
- * Input : None
- * Return : RCCU_USB_Clocks
- *******************************************************************************/
- RCCU_USB_Clocks RCCU_USBClockSource ( void );
- /*******************************************************************************
- * Function Name : RCCU_FrequencyValue
- * Description : Calculates & Returns any internal RCCU clock freuqency
- * passed in parametres
- * Input : RCCU_Clocks : RCCU_CLK2, RCCU_RCLK, RCCU_MCLK,
- * RCCU_PCLK, RCCU_FCLK
- * Return : u32
- *******************************************************************************/
- u32 RCCU_FrequencyValue ( RCCU_Clocks Internal_Clk );
- /*******************************************************************************
- * Function Name : RCCU_ITConfig
- * Description : Configures the RCCU interrupts
- * Input : RCCU interrupts : RCCU_CK2_16_IT, RCCU_CKAF_IT,
- * RCCU_PLL1_LOCK_IT
- * Return : None
- *******************************************************************************/
- inline void RCCU_ITConfig ( RCCU_Interrupts RCCU_IT, FunctionalState NewState)
- {
- if (NewState == ENABLE) RCCU->CCR |= RCCU_IT; else RCCU->CCR &= ~RCCU_IT;
- }
- /*******************************************************************************
- * Function Name : RCCU_FlagStatus
- * Description : Checks the RCCU clock flag register status
- * Input : RCCU Flags : RCCU_CK2_16, RCCU_CKAF, RCCU_PLL1_LOCK
- * Return : FlagStatus : SET or RESET
- *******************************************************************************/
- inline FlagStatus RCCU_FlagStatus ( RCCU_Flags RCCU_flag )
- {
- return (RCCU->CFR & RCCU_flag) == 0 ? RESET : SET;
- }
- /*******************************************************************************
- * Function Name : RCCU_FlagClear
- * Description : Clears a specified flag in the RCCU registers
- * Input : RCCU Flags : RCCU_CK2_16, RCCU_CKAF, RCCU_PLL1_LOCK
- * Return : None
- *******************************************************************************/
- inline void RCCU_FlagClear ( RCCU_Interrupts RCCU_IT )
- {
- RCCU->CFR |= RCCU_IT;
- }
- /*******************************************************************************
- * Function Name : RCCU_ResetSources
- * Description : Return the source of the system reset
- * Input : None
- * Return : The reset source
- *******************************************************************************/
- inline RCCU_ResetSources RCCU_ResetSource ()
- {
- switch(RCCU->CFR & RCCU_ResetSources_Mask)
- {
- case 0x00000020: return RCCU_SoftwareReset;
- case 0x00000040: return RCCU_WDGReset;
- case 0x00000080: return RCCU_RTCAlarmReset;
- case 0x00000200: return RCCU_LVDReset;
- case 0x00000400: return RCCU_WKPReset;
- default : return RCCU_ExternalReset;
- }
- }
- #endif // __RCCU_H
- /******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/