?? rccu.h
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/******************** (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****/
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