/*******************************************************************************
* 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
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* 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
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* you agree to the additional terms and conditions found by accessing the
* following link:
* http://www.renesas.com/disclaimer
* (c) 2014 Renesas Electronics Corporation All rights reserved.
*******************************************************************************/


/******************************************************************************
* File Name     : r_dma.c
* Version       : 1.0
* Device(s)     : R7F701007 RH850/F1L
* Tool-Chain    : IAR Embedded Workbench 1.30.1
* Description   : This file is a sample of the DMA.
* Operation     : -
*******************************************************************************
*******************************************************************************
* History       : DD.MM.YYYY Version Description
*               : 20.03.2014 1.00    First Release
******************************************************************************/

/******************************************************************************
Includes <System Includes>
******************************************************************************/
#include    "r_typedefs.h"
#include    "iodefine.h"
#ifdef __ghs__
#include    "device.h"
#endif

#ifdef __IAR_SYSTEMS_ICC__
	#include <intrinsics.h>
#endif




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


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


/******************************************************************************
Exported global variables and functions (to be accessed by other files)
******************************************************************************/
        void        R_DMA_Init( void );
        void        R_DMA_clear_tc( void );


/******************************************************************************
Private global variables and functions
******************************************************************************/
        uint32_t    dma_destination_buff[8];


/******************************************************************************
* Function Name : void R_DMA_Init( void )
* Description   : This function initialize DMA0.
* Argument      : none
* Return Value  : none
******************************************************************************/
void R_DMA_Init( void )
{
    /* Set interrupt flags */
    MKDMA0               = 1U;
    RFDMA0               = 0U;
    TBDMA0               = 0U;

    DMCM0                = 0x0000U;                                      /* Supervisor mode is assigned as the master */

    DTS0DTE              = 0U;                                           /* Disables DMA transfer                     */
    DSA0                 = (uint32_t)&ADCA0.DIR00.UINT32;                /* Set the DMA source address (ADCA0.DIR00)  */
    DDA0                 = (uint32_t)&dma_destination_buff[0];           /* Set the DMA destination address (RAM)     */
    DTC0                 = 0x0008U;                                      /* Transfer executed 8                       */


    /* Set the transfer data size , address count direction and loop enable.
    DTCTm   - DMA Transfer Control Register
    b15                  - Reserved set to 0
    b14:b13   DTCTmDSn   - DMA transfer data size                         - 32 bits data. Set to 10'b.
    b12       DTCTmLE    - Loop enable                                    - Disable. Set to 0'b.
    b11:b 8              - Reserved set to 0
    b 7       DTCTmSACM1 - DMA transfer source address counting direction - Increment. Set to 0'b.
    b 6                  - Reserved set to 0
    b 5       DTCTmDACM1 - DMA transfer destination address counting
                           direction                                      - Increment. Set to 0'b.
    b 4:b 0              - Reserved set to 0 */
    DTCT0                = 0x4000U;


    DRQCLR               = 0x0001U;                                      /* DMA0 Request Clear       */

    DTFR0                = 0x8000U + 0x04U;                              /* Enables the generation of the DMA trigger factor. */
                                                                         /* DMA Trigger Interrupt = INTADCA0I0                */

    DTS0DTE              = 1U;                                           /* Enables DMA transfer     */

    MKDMA0               = 0U;                                           /* Enable INTDMA0 interrupt */
}


/******************************************************************************
* Function Name : void R_DMA_clear_tc( void )
* Description   : TC bit clear
* Argument      : none
* Return Value  : none
******************************************************************************/
void R_DMA_clear_tc( void )
{
    while ( DTS0TC != 1U ) {

#if !defined(__IAR_SYSTEMS_ICC__)
	        __nop();
#endif

#ifdef __IAR_SYSTEMS_ICC__
        __asm( "nop");
#endif

    }
    DTS0TC               = 0U;                                           /* clear DMA transfer end status             */
}