rccu.h

STR711 IAP底层驱动程序

/******************** (C) COPYRIGHT 2006 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:
*  02/01/2006 : IAP Version 2.0
*  11/24/2004 : IAP Version 1.0
*******************************************************************************
 THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
 CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

#ifndef _RCCU_H
#define _RCCU_H

#include "71x_map.h"

typedef enum {
               RCCU_PLL1_Output,
               RCCU_CLOCK2_16,
               RCCU_CLOCK2,
               RCCU_RTC_CLOCK
             } RCCU_RCLK_Clocks;

typedef enum {
               RCCU_PLL1_Mul_12=0x01,
               RCCU_PLL1_Mul_16=0x03,
               RCCU_PLL1_Mul_20=0x00,
               RCCU_PLL1_Mul_24=0x02
             } RCCU_PLL1_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_CLK2,
               RCCU_RCLK,
               RCCU_MCLK,
               RCCU_PCLK,
               RCCU_FCLK
             } RCCU_Clocks;

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;

#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

// 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_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_PLL1_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_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_FrequencyValue
* Description    : Calculates & Returns any internal RCCU clock frequency
*                  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);

#endif	/* _RCCU_H */

/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/