blob: 9218763e63898ce2da8069edd729db8a4627789c [file] [log] [blame]
/***********************************************************************************************************************
* 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) 2014 Renesas Electronics Corporation. All rights reserved.
***********************************************************************************************************************/
/***********************************************************************************************************************
* System Name : RZ/T1 Init program
* File Name : r_reset.c
* Version : 0.1
* Device : R7S910018
* Abstract : API for RESET and Low-Power function
* Tool-Chain : GNUARM-NONEv14.02-EABI
* OS : not use
* H/W Platform : Renesas Starter Kit for RZ/T1(Preliminary)
* Description : RESET and Low-Power API of RZ/T1
* Limitation : none
***********************************************************************************************************************/
/***********************************************************************************************************************
* History : DD.MM.YYYY Version Description
* : 21.05.2015 1.00 First Release
***********************************************************************************************************************/
/***********************************************************************************************************************
Includes <System Includes> , "Project Includes"
***********************************************************************************************************************/
#include <stdint.h>
#include "iodefine.h"
#include "r_system.h"
#include "r_reset.h"
#include "r_typedefs.h"
/***********************************************************************************************************************
Macro definitions
***********************************************************************************************************************/
#define RST_WRITE_ENABLE (0x0000A502)
#define RST_WRITE_DISABLE (0x0000A500)
/***********************************************************************************************************************
Typedef definitions
***********************************************************************************************************************/
/***********************************************************************************************************************
Imported global variables and functions (from other files)
***********************************************************************************************************************/
/***********************************************************************************************************************
Exported global variables and functions (to be accessed by other files)
***********************************************************************************************************************/
/***********************************************************************************************************************
Private variables and functions
***********************************************************************************************************************/
/***********************************************************************************************************************
* Function Name : r_rst_write_enable
* Description : Enables writing to the registers related to RESET and Low-
* Power function. And dummy read the register in order to fix
* the register value.
* Arguments : none
* Return Value : none
***********************************************************************************************************************/
void r_rst_write_enable(void)
{
volatile uint32_t dummy;
UNUSED_VARIABLE(dummy);
/* Enables writing to the Reset and Low-Power register */
SYSTEM.PRCR.LONG = RST_WRITE_ENABLE;
dummy = SYSTEM.PRCR.LONG;
}
/***********************************************************************************************************************
End of function r_rst_write_enable
***********************************************************************************************************************/
/***********************************************************************************************************************
* Function Name : r_rst_write_disable
* Description : Disables writing to the registers related to RESET and Low-
* Power function. And dummy read the register in order to fix
* the register value.
* Arguments : none
* Return Value : none
***********************************************************************************************************************/
void r_rst_write_disable(void)
{
volatile uint32_t dummy;
UNUSED_VARIABLE(dummy);
/* Disables writing to the Reset and Low-Power register */
SYSTEM.PRCR.LONG = RST_WRITE_DISABLE;
dummy = SYSTEM.PRCR.LONG;
}
/***********************************************************************************************************************
End of function r_rst_write_disable
***********************************************************************************************************************/
/* End of File */