File content as of revision 600:7d17ca308cd1:

/*******************************************************************************
* DISCLAIMER
* This software is supplied by Renesas Electronics Corporation and is only
* intended for use with Renesas products. No other uses are authorized. This
* software is owned by Renesas Electronics Corporation and is protected under
* all applicable laws, including copyright laws.
* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
* THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
* LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
* TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
* ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
* FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
* ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* Renesas reserves the right, without notice, to make changes to this software
* and to discontinue the availability of this software. By using this software,
* you agree to the additional terms and conditions found by accessing the
* following link:
* http://www.renesas.com/disclaimer
* Copyright (C) 2012 - 2014 Renesas Electronics Corporation. All rights reserved.
*******************************************************************************/
/*******************************************************************************
* File Name   : rza_io_regrw.c
* $Rev: 1121 $
* $Date:: 2014-08-06 17:09:53 +0900#$
* Description : Low level register read/write
*******************************************************************************/

/******************************************************************************
Includes   <System Includes> , "Project Includes"
******************************************************************************/
#include "r_typedefs.h"

#ifdef __CC_ARM
#pragma arm section code   = "CODE_IO_REGRW"
#pragma arm section rodata = "CONST_IO_REGRW"
#pragma arm section rwdata = "DATA_IO_REGRW"
#pragma arm section zidata = "BSS_IO_REGRW"
#endif

/******************************************************************************
Typedef definitions
******************************************************************************/


/******************************************************************************
Macro definitions
******************************************************************************/


/******************************************************************************
Imported global variables and functions (from other files)
******************************************************************************/


/******************************************************************************
Exported global variables and functions (to be accessed by other files)
******************************************************************************/


/******************************************************************************
Private global variables and functions
******************************************************************************/


/******************************************************************************
* Function Name: RZA_IO_RegWrite_8
* Description  : IO register 8-bit write
* Arguments    : volatile uint8_t * ioreg : IO register for writing
*              :                          : Use register definition name of the
*              :                          : iodefine.h
*              : uint8_t write_value      : Write value for the IO register
*              : uint8_t shift            : The number of left shifts to the 
*              :                          : target bit
*              : uint8_t mask             : Mask value for the IO register
*              :                          : (Target bit : "1")
* Return Value : None
******************************************************************************/
void RZA_IO_RegWrite_8(volatile uint8_t * ioreg, uint8_t write_value, uint8_t shift, uint8_t mask)
{
    uint8_t reg_value;

    reg_value = *ioreg;                                         /* Read from register */
    reg_value = (reg_value & (~mask)) | (write_value << shift); /* Modify value       */
    *ioreg    = reg_value;                                      /* Write to register  */
}

/******************************************************************************
* Function Name: RZA_IO_RegWrite_16
* Description  : IO register 16-bit write
* Arguments    : volatile uint16_t * ioreg : IO register for writing
*              :                           : Use register definition name of the
*              :                           : iodefine.h
*              : uint16_t write_value      : Write value for the IO register
*              : uint16_t shift            : The number of left shifts to the 
*              :                           : target bit
*              : uint16_t mask             : Mask value for the IO register
*              :                           : (Target bit : "1")
* Return Value : None
******************************************************************************/
void RZA_IO_RegWrite_16(volatile uint16_t * ioreg, uint16_t write_value, uint16_t shift, uint16_t mask)
{
    uint16_t reg_value;

    reg_value = *ioreg;                                         /* Read from register */
    reg_value = (reg_value & (~mask)) | (write_value << shift); /* Modify value       */
    *ioreg    = reg_value;                                      /* Write to register  */
}

/******************************************************************************
* Function Name: RZA_IO_RegWrite_32
* Description  : IO register 32-bit write
* Arguments    : volatile uint32_t * ioreg : IO register for writing
*              :                           : Use register definition name of the
*              :                           : iodefine.h
*              : uint32_t write_value      : Write value for the IO register
*              : uint32_t shift            : The number of left shifts to the 
*              :                           : target bit
*              : uint32_t mask             : Mask value for the IO register
*              :                           : (Target bit : "1")
* Return Value : None
******************************************************************************/
void RZA_IO_RegWrite_32(volatile uint32_t * ioreg, uint32_t write_value, uint32_t shift, uint32_t mask)
{
    uint32_t reg_value;

    reg_value = *ioreg;                                         /* Read from register */
    reg_value = (reg_value & (~mask)) | (write_value << shift); /* Modify value       */
    *ioreg    = reg_value;                                      /* Write to register  */
}

/******************************************************************************
* Function Name: RZA_IO_RegRead_8
* Description  : IO register 8-bit read
* Arguments    : volatile uint8_t * ioreg : IO register for reading
*              :                          : Use register definition name of the 
*              :                          : iodefine.h
*              : uint8_t shift            : The number of right shifts to the 
*              :                          : target bit
*              : uint8_t mask             : Mask bit for the IO register
*              :                          : (Target bit: "1")
* Return Value : uint8_t : Value of the obtained target bit
******************************************************************************/
uint8_t RZA_IO_RegRead_8(volatile uint8_t * ioreg, uint8_t shift, uint8_t mask)
{
    uint8_t reg_value;

    reg_value = *ioreg;                         /* Read from register            */
    reg_value = (reg_value & mask) >> shift;    /* Clear other bit and Bit shift */

    return reg_value;
}

/******************************************************************************
* Function Name: RZA_IO_RegRead_16
* Description  : IO register 16-bit read
* Arguments    : volatile uint16_t * ioreg : IO register for reading
*              :                           : Use register definition name of the 
*              :                           : iodefine.h
*              : uint16_t shift            : The number of right shifts to the 
*              :                           : target bit
*              : uint16_t mask             : Mask bit for the IO register
*              :                           : (Target bit: "1")
* Return Value : uint16_t : Value of the obtained target bit
******************************************************************************/
uint16_t RZA_IO_RegRead_16(volatile uint16_t * ioreg, uint16_t shift, uint16_t mask)
{
    uint16_t reg_value;

    reg_value = *ioreg;                         /* Read from register            */
    reg_value = (reg_value & mask) >> shift;    /* Clear other bit and Bit shift */

    return reg_value;
}

/******************************************************************************
* Function Name: RZA_IO_RegRead_32
* Description  : IO register 32-bit read
* Arguments    : volatile uint32_t * ioreg : IO register for reading
*              :                           : Use register definition name of the 
*              :                           : iodefine.h
*              : uint32_t shift            : The number of right shifts to the 
*              :                           : target bit
*              : uint32_t mask             : Mask bit for the IO register
*              :                           : (Target bit: "1")
* Return Value : uint32_t : Value of the obtained target bit
******************************************************************************/
uint32_t RZA_IO_RegRead_32(volatile uint32_t * ioreg, uint32_t shift, uint32_t mask)
{
    uint32_t reg_value;

    reg_value = *ioreg;                         /* Read from register            */
    reg_value = (reg_value & mask) >> shift;    /* Clear other bit and Bit shift */

    return reg_value;
}


/* End of File */